2.6.29-rc4-rt1

when using patch-2.6.29.1-rt8 with CONFIG_PREEMPT_SOFTIRQS=y, but not enable PREEMPT_RT, there will be an error when linking kernel:

undefined reference to hrtimer_wait_for_timer

I found that, hrtimer_wait_for_timer is only defined when PREEMPT_RT is enabled, but in include/linux/hrtimer.h, the source code is like this:

#ifdef CONFIG_PREEMPT_SOFTIRQS
extern void hrtimer_wait_for_timer(const struct hrtimer *timer);
#else

# define hrtimer_wait_for_timer(timer) do { cpu_relax(); } while (0)

a possible fix should be:

index 8bafa35..1c1cdf3 100644
@@ -366,7 +366,7 @@ static inline int hrtimer_restart(struct hrtimer

*timer)
}

/* Softirq preemption could deadlock timer removal */
-#ifdef CONFIG_PREEMPT_SOFTIRQS
+#if defined(CONFIG_PREEMPT_SOFTIRQS) && defined(CONFIG_PREEMPT_RT)
extern void hrtimer_wait_for_timer(const struct hrtimer *timer);
#else

 # define hrtimer_wait_for_timer(timer) do { cpu_relax(); } while (0)

Wu Zhangjin
DSLab, Lanzhou University, China
www.lemote.com, Jiangsu Province, China

We are pleased to announce the next update to our new preempt-rt series.

- hrtimer fix softirq handling
- x86/64 build fix for empty sections

Download locations:

http://rt.et.redhat.com/download/
http://www.kernel.org/pub/linux/kernel/projects/rt/

Information on the RT patch can be found at:

http://rt.wiki.kernel.org/index.php/Main_Page

to build the 2.6.29.1-rt9 tree, the following patches should be applied:

     http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.29.1.tar.bz2
     http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.29.1-rt9.bz2

The broken out patches are also available at the same download locations.

Enjoy !

tglx

We are pleased to announce the next update to our new preempt-rt series.

- update to 2.6.29.2
- HPET/IOAPIC mainline fix

Download locations:

http://rt.et.redhat.com/download/
http://www.kernel.org/pub/linux/kernel/projects/rt/

Information on the RT patch can be found at:

http://rt.wiki.kernel.org/index.php/Main_Page

to build the 2.6.29.2-rt10 tree, the following patches should be applied:

    http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.29.2.tar.bz2
    http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.29.2-rt10.bz2

The broken out patches are also available at the same download locations.

Enjoy !

tglx

We are pleased to announce the next update to our new preempt-rt series.

- ioperm fix for x86/32bit
- hrtimer fix for !highres
- futex updates (Darren Hart)
- sys_rt_tgsigqueueinfo added for testing

The MIPS support is still work in progress, but I expect that it will hit -rt12.

Download locations:

http://rt.et.redhat.com/download/
http://www.kernel.org/pub/linux/kernel/projects/rt/

Information on the RT patch can be found at:

http://rt.wiki.kernel.org/index.php/Main_Page

to build the 2.6.29.2-rt11 tree, the following patches should be applied:

    http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.29.2.tar.bz2
    http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.29.2-rt11.bz2

The broken out patches are also available at the same download locations.

Enjoy !

tglx

We are pleased to announce the next update to our new preempt-rt series.

- rebase to 2.6.29.3 (NOP)
- loadavg optimization
- futex updates (tglx, peterz)

Download locations:

http://rt.et.redhat.com/download/
http://www.kernel.org/pub/linux/kernel/projects/rt/

Information on the RT patch can be found at:

http://rt.wiki.kernel.org/index.php/Main_Page

to build the 2.6.29.3-rt12 tree, the following patches should be applied:

    http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.29.3.tar.bz2
    http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.29.3-rt12.bz2

The broken out patches are also available at the same download locations.

Enjoy !

tglx

This patch resulted in a broken build for me, until I did this:

@@ -121754,7 +121754,7 @@ Index: linux-2.6-tip/kernel/sched.c
  }
 
  /*
-@@ -2801,6 +3177,15 @@ static void update_cpu_load(struct rq *t
+@@ -2801,6 +3177,17 @@ static void update_cpu_load(struct rq *t
  			new_load += scale-1;
  		this_rq->cpu_load[i] = (old_load*(scale-1) + new_load) >> i;
  	}

@@ -121765,8 +121765,10 @@ Index: linux-2.6-tip/kernel/sched.c
 +	this_rq->calc_load_update += LOAD_FREQ;
 +	calc_load_account_active(this_rq);
 +
++#ifdef CONFIG_SMP
 +	if (this_rq->cpu == calc_load_cpu)
 +		calc_global_load();
++#endif
  }
 
  #ifdef CONFIG_SMP

I have no idea if that is a valid thing to do, but it seems to work for me.

Regards,

Hugo Vincent

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if (cpu_of(this_rq) == calc_load_cpu)

to reduce if-deffery

That's what I did :)

We are pleased to announce the next update to our new preempt-rt series.

- rebase to 2.6.29.4 (no conflicts)
- futex updates (tglx, dvhart)

Download locations:

http://rt.et.redhat.com/download/
http://www.kernel.org/pub/linux/kernel/projects/rt/

Information on the RT patch can be found at:

http://rt.wiki.kernel.org/index.php/Main_Page

to build the 2.6.29.4-rt15 tree, the following patches should be applied:

    http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.29.4.tar.bz2
    http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.29.4-rt15.bz2

The broken out patches are also available at the same download locations.

Enjoy !

tglx

We are pleased to announce the next update to our new preempt-rt series.

- fix loadavg bug on 64bit

Download locations:

http://rt.et.redhat.com/download/
http://www.kernel.org/pub/linux/kernel/projects/rt/

Information on the RT patch can be found at:

http://rt.wiki.kernel.org/index.php/Main_Page

to build the 2.6.29.4-rt16 tree, the following patches should be applied:

    http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.29.4.tar.bz2
    http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.29.4-rt16.bz2

The broken out patches are also available at the same download locations.

Enjoy !

tglx

Thank you for notice of 2.6.29.r-rt16 release.

This is a report about "/proc/interrupts" result in my development system.

* System requirements :
Core2 Quad Q6600 , LV-676 Motherboard , SATA 160G, DDR2 3G , ftp://ftp.commell.com.tw/COMMELL/support/LV-676/BIOS/676x161.zip.

In summary, I can't get irq loadbalancing(/proc/interrupts) in my system using 2.6.29.4-rt16 linux kernel because of LV-676 motherboard's H/W problem. ( I disabled [ ]irqbalance - userspace with "ntsysv" command in this experiment . )

[[email protected] ~]$
[[email protected] ~]$
[[email protected] ~]$ cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3

  0:        136          0          0          0   IO-APIC-edge      timer
  1:          2          0          0          0   IO-APIC-edge      i8042
  3:          2          0          0          0   IO-APIC-edge
  4:          2          0          0          0   IO-APIC-edge
  6:          2          0          0          0   IO-APIC-edge      floppy
  7:          0          0          0          0   IO-APIC-edge      lpptest
  8:          1          0          0          0   IO-APIC-edge      rtc
  9:          1          0          0          0   IO-APIC-fasteoi   acpi
 16:          0          0          0          0   IO-APIC-fasteoi

uhci_hcd:usb3
18: 15030 2133 4521 0 IO-APIC-fasteoi
libata, libata, uhci_hcd:usb6
19: 1133 0 0 0 IO-APIC-fasteoi
ehci_hcd:usb1, uhci_hcd:usb7
20: 3 0 0 0 IO-APIC-fasteoi
ehci_hcd:usb2, uhci_hcd:usb5
21: 0 0 0 0 IO-APIC-fasteoi
uhci_hcd:usb4

223:        871          0          0          0   PCI-MSI-edge      eth1
NMI:          0          0          0          0   Non-maskable interrupts
LOC:     158448     161871     160140     161074   Local timer interrupts
RES:        735        822       1378       1028   Rescheduling interrupts
CAL:       3397       3408       1948       2452   function call interrupts
TLB:        240        288        266        310   TLB shootdowns
TRM:          0          0          0          0   Thermal event interrupts
SPU:          0          0          0          0   Spurious interrupts
ERR:          0
MIS:          0

[[email protected] ~]$

So, I asked Commell company about this problems.
For reference, Belows is answer from their technical service team.

-- [ From [email protected]] --------------------------------------------- Hi
Sorry for keep you waiting.
We had setn LV-676 motherboard to BIOS vendor for solution, still now no resond yet, any respond will pass to you.

We had constantly push for solution, and BIOS vendor is working on this issue and attempt to solve this problem,
any message from them will let you know.
BR
K.H. Ooi
------------------------------------------------------------------------------------

Currently, I am using "smp_affinity" in this LV-676 mother board like belows.

          Binary Hex
    CPU 0 0001 1
    CPU 1 0010 2
    CPU 2 0100 4
    CPU 3 1000 8

[[email protected] ~]$
[[email protected] ~]$ echo 8 > /proc/irq/18/smp_affinity [[email protected] ~]$ for i in ls -1 /proc/irq/*/smp_affinity; do echo "smp affinity CPU3 +++ $i"; echo 8 > $i; done <-- assign irq to CPU3
[[email protected] ~]$ cat /proc/interrupts <---check irq-balancing

* Don't use irq affinity about timer irq [[email protected] ~]$ echo 8 > /proc/irq/0/smp_affinity -bash: echo: write error: Input/output error

Regards,
GeunSik Lim ( Samsung Electronics )
Blog : http://blog.naver.com/invain/
e-Mail: [email protected]
           [email protected] , [email protected]
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We are pleased to announce the next update to our new preempt-rt series.

- tracing updates (Luis)
- latency histograms (Carsten)
- build warning fixes (Clark)

2.6.29.4-rt17 is the last major update to the 2.6.29 -rt series.

There will be bugfix releases as necessary and eventually an extra update release once the real hwlat (former SMIdetector) module / tool is published by JCM aka. Jon "slaCker" Masters.

In the meantime I'm moving on to 30-rt.

Download locations:

http://rt.et.redhat.com/download/
http://www.kernel.org/pub/linux/kernel/projects/rt/

Information on the RT patch can be found at:

http://rt.wiki.kernel.org/index.php/Main_Page

to build the 2.6.29.4-rt17 tree, the following patches should be applied:

    http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.29.4.tar.bz2
    http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.29.4-rt17.bz2

The broken out patches are also available at the same download locations.

Enjoy !

tglx

We are pleased to announce the next update to our new preempt-rt series.

- futex bug fix (tglx)
- hwlat latency detector module (Jon Cool Masters)

I have to say it works pretty well when you call someone a Slacker :)

Clark is working on user space tools which help you to use it w/o fiddling module parameters. It's going to be in the next rt-tests release which has a not yet defined schedule. I wonder whether I should try that slacker trick again :)

Download locations:

http://rt.et.redhat.com/download/
http://www.kernel.org/pub/linux/kernel/projects/rt/

Information on the RT patch can be found at:

http://rt.wiki.kernel.org/index.php/Main_Page

to build the 2.6.29.4-rt18 tree, the following patches should be applied:

    http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.29.4.tar.bz2
    http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.29.4-rt18.bz2

The broken out patches are also available at the same download locations.

Enjoy !

tglx

We are pleased to announce the next update to our new preempt-rt series.

- futex: plug page ref leak (stupid me)
- hwlat: add missing include (ukleinek)

Download locations:

http://rt.et.redhat.com/download/
http://www.kernel.org/pub/linux/kernel/projects/rt/

Information on the RT patch can be found at:

http://rt.wiki.kernel.org/index.php/Main_Page

to build the 2.6.29.4-rt19 tree, the following patches should be applied:

    http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.29.4.tar.bz2
    http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.29.4-rt19.bz2

The broken out patches are also available at the same download locations.

Enjoy !

tglx

Ciao Thomas,

this new version of the preempt-rt patch seems to be a good step forward with respect to a problem I have in a benchmark application I am running on top of a kernel v2.6.29.4 patched with it on a quad-core Intel(R) Xeon(R) machine. Within this benchmark I am making use of pthreads and semaphores and sometime it happens that a call to "sem_wait()" returns "-1" and sets the "errno" to "512" - which corresponds to "ERESTARTSYS" - which up to my poor kernel knowledge should never be delivered to the user space.
Now, with the new version of the preempt-rt patch, the frequency of these odd "sem_wait()" return values has notably diminished, though not completely stopped. So, I thought it might be interesting for you if I share a workaround with you which seems to eliminate the odd "sem_wait()" return values (as it did work already for preempt-rt patch version rt17). Note, that this for sure is not a bug fix, but just a workaround for which I am even not a 100% sure that it is semantically correct, but maybe it gives you a hint on what might still go wrong in the RT patch. Pls. find attach the "rcsdiff" output on file "kernel/futex.c" containing the workaround.

Best regards,
Wolfgang Betz

===================================================================
RCS file: kernel/RCS/futex.c,v
retrieving revision 1.1
diff -r1.1 kernel/futex.c

1839a1840,1849

2600a2611,2619

We are pleased to announce the next update to our new preempt-rt series.

- update to 2.6.29.5 (2.6.29.5-rt20, which I uploaded yesterday but did not announce due to the findings below)

- softirq: lower default priority below hardirq default priority

This fixes a long standing default priority configuration problem of the -rt series. On UP machines this can result in net_tx softirq running in an endless loop and starving the irq threads and the other softirq threads and of course everything with lower priority. It might be possible to happen on a SMP machine when the hardirq thread affinities are tweaked in the right way.

What happens is:

     tx interrupt
        lock(card->tx_lock);
        dev_kfree_skb_any(skb);
          blocks on a contended lock
	    
     net_tx softirq runs
        unlocks contended lock but does not schedule away due to equal prio
	repeat:
         calls xmit
	 try_lock(card->tx_lock) fails
	   -> reschedule skb which keeps net_tx running
         goto repeat;

The scheduler does not schedule away net_tx, so this goes on forever.

This has been there forever, but it seems to be easier to trigger in the 29 -rt series which is probably due to the slab cache lock breaks we did.

The problem is restricted to a dozen of wireless adapters and network cards where e1000e is the most popular one. We could patch the affected drivers for -rt, but we need to have a closer look at the general assumptions of drivers vs. hardirq/softirq. Note, this is not a mainline problem as the semantics are entirely correct there.

Lowering the priorities of the softirq threads below the hardirq threads priorities is a safe workaround for now. It prevents the runaway scenario under all circumstances as it resembles the mainline semantics closely.

For all existing -rt systems the problem can be solved w/o patching the kernel by adjusting the priority of the softirq threads from the init scripts with chrt.

It's extremly hard to trigger this, we never had a report of that before, and I want to say thanks to Bernd Oelker who meticulously worked on reproducing the problem and debugging it with all evil methods and patches I could come up with. And no, I'm not going to tell you which nasty hacks made it possible to decode this :)

Download locations:

http://rt.et.redhat.com/download/
http://www.kernel.org/pub/linux/kernel/projects/rt/

Information on the RT patch can be found at:

http://rt.wiki.kernel.org/index.php/Main_Page

to build the 2.6.29.5-rt21 tree, the following patches should be applied:

    http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.29.5.tar.bz2
    http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.29.5-rt21.bz2

The broken out patches are also available at the same download locations.

Enjoy !

tglx

We are pleased to announce the next update to our new preempt-rt series.

- fix the network live lock issue for real

- disable preemption across iomap atomic section

- indentify false positives in the softirq pending check in the nohz code.

The network issue which I described in the -21 release still persists between net-rx and net-tx softirqs. The real fix is replacing the spin_trylock with spin_lock in the affected drivers.

On -rt we had several unexplained reports of cpus going idle with a pending softirq. I got hands on a trace of such a situation. What happens is that a softirq is blocked on a lock which is held by a task which is either blocked itself or running on another CPU. When there is no other active task on the CPU then it goes idle but the softirq pending bit of the blocked softirq thread is still set. This leads to false positive warnings. To filter out those cases the blocked state of the softirq needs to be checked instead of printing the warning blindly.

Download locations:

http://rt.et.redhat.com/download/
http://www.kernel.org/pub/linux/kernel/projects/rt/

Information on the RT patch can be found at:

http://rt.wiki.kernel.org/index.php/Main_Page

to build the 2.6.29.5-rt22 tree, the following patches should be applied:

    http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.29.5.tar.bz2
    http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.29.5-rt22.bz2

The broken out patches are also available at the same download locations.

Enjoy !

tglx

We are pleased to announce the next update to our new preempt-rt series.

- update to 2.6.29.6

- compile fixes (Wu Zhangjin)

- powerpc highmem fix

- hwlat smp_processor_id() fix (Carsten)

- ktime_get* speedups (Martin)

Download locations:

http://rt.et.redhat.com/download/
http://www.kernel.org/pub/linux/kernel/projects/rt/

Information on the RT patch can be found at:

http://rt.wiki.kernel.org/index.php/Main_Page

to build the 2.6.29.6-rt23 tree, the following patches should be applied:

    http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.29.6.tar.bz2
    http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.29.6-rt22.bz2

The broken out patches are also available at the same download locations.

Enjoy !

tglx

P.S.: 30-rt is coming close and runs the final tests right now

I'm getting slightly weird behavior from rt23 in an intel quad core machine (my T61 laptop is fine), rt22 was fine. It is some timer issue, if I type continuously I get (every few seconds) repeated keys. Nothing in the logs, nothing in dmesg that is (significantly) different from an rt22 boot.

-- Fernando

Hmm. The only change which touches timer related stuff is the ktime* speedups. Can you please apply the revert patch below and check whether that changes anything? If not, then we need to look at the 2.6.29.5 -> .6 delta.

Thanks,

tglx
-----

index 93affb0..cb8a15c 100644
@@ -46,6 +46,37 @@
 
 #include <asm/uaccess.h>
 
+/**
+ * ktime_get - get the monotonic time in ktime_t format
+ *
+ * returns the time in ktime_t format
+ */
+ktime_t ktime_get(void)
+{
+	struct timespec now;
+
+	ktime_get_ts(&now);
+
+	return timespec_to_ktime(now);
+}
+EXPORT_SYMBOL_GPL(ktime_get);
+
+/**
+ * ktime_get_real - get the real (wall-) time in ktime_t format
+ *
+ * returns the time in ktime_t format
+ */
+ktime_t ktime_get_real(void)
+{
+	struct timespec now;
+
+	getnstimeofday(&now);
+
+	return timespec_to_ktime(now);
+}
+
+EXPORT_SYMBOL_GPL(ktime_get_real);
+
 /*
  * The timer bases:
  *

@@ -73,6 +104,31 @@ DEFINE_PER_CPU(struct hrtimer_cpu_base, hrtimer_bases) =
 	}
 };
 
+/**
+ * ktime_get_ts - get the monotonic clock in timespec format
+ * @ts:		pointer to timespec variable
+ *
+ * The function calculates the monotonic clock from the realtime
+ * clock and the wall_to_monotonic offset and stores the result
+ * in normalized timespec format in the variable pointed to by @ts.
+ */
+void ktime_get_ts(struct timespec *ts)
+{
+	struct timespec tomono;
+	unsigned long seq;
+
+	do {
+		seq = read_seqbegin(&xtime_lock);
+		getnstimeofday(ts);
+		tomono = wall_to_monotonic;
+
+	} while (read_seqretry(&xtime_lock, seq));
+
+	set_normalized_timespec(ts, ts->tv_sec + tomono.tv_sec,
+				ts->tv_nsec + tomono.tv_nsec);
+}
+EXPORT_SYMBOL_GPL(ktime_get_ts);
+
 /*
  * Get the coarse grained time at the softirq based on xtime and
  * wall_to_monotonic.

The bad behavior is gone with the patch reverted.

But life is not so simple :-)

I rebooted into the newer kernel and the problem was gone. Then I rebooted into the older (unreverted) kernel and the problem was not there either! Sigh. Then I powered down the machine, powered up in the older kernel and the problem was there. Powered down, powered up in the newer kernel and the problem was gone. Warm boot into the older kernel and the problem is _not_ there. So it would seem there's something getting screwed up at the hardware level that the reverted patch "fixes"...

When the problem happens it is very obvious. And also affects the screensaver, of course. I don't see it in my laptop and on another P4 based machine running fc11 (as opposed to fc10 in the others) and a different build.

Thanks!
-- Fernando

I am getting the same issue, reliably reproducibly - though ironically only with the proprietary NVIDIA. Key repeats, screen going "No signal" for a sec, sometimes comes back, sometimes hangs the whole machine.

nv is fine, as is tty1 with or without NVIDIA.

The problem is reproducible on 2.6.31-rc8-rt9. Keys repeat, and the patch for 2.6.31-rt does not want to compile anymore.

We are pleased to announce the next update to our new preempt-rt series.

- update to 2.6.31-rc4

This is a major rework of the rt patch series. Thanks to Clark Williams and John Kacur for providing the merge to 2.6.30 while I was stabilizing .29-rt. While the 30-rt series looked quite stable, we decided to skip 30-rt entirely to keep track with the ongoing mainline development for various reaons. The .31-rt series is planned to be stabilized as we have done with .29-rt.

The main changes in this release are:

- interrupt threading

interrupt threading is now a pure extension of the mainline threaded interrupt infrastructure. This reduced the patch size of the forced irq threading to mere

8 files changed, 178 insertions(+), 13 deletions(-)

Another interesting detail is that the new forced threaded code uses per device threads instead of per interrupt line threads as we have done in the past. This was just a logical consequence of the per device thread (voluntary threading) infrastructure in mainline and allows us now to share an interrupt line between a hardirq based handler and a threaded handler device. One use case which comes to my mind is AT91 which shares the timer and the serial port interrupt; we now can solve that problem w/o nasty hacks by requesting a threaded handler for the serial port which shuts up the serial device interrupt in the hard interrupt handler part.

- rework of the locking infrastructure

Up to now the -rt patches changed the raw_spinlock_t to __raw_spinlock_t and added another two levels of underscores to many of the locking primitives. A compiler trick was used to chose the implementation for RT=y and RT=n compiles depending on the lock type in the lock definition.

This is nasty as there is no destinction in the source code which kind of lock we are dealing with except if one looks up the lock definition/declaration. It definitely was a clever move in the first place to get things going, but aside of the underscore conflicts which were introduced by lockdep it was not longer acceptable to hide the fact that we are treating a lock differently. Same applies for the changes to (rw_)semaphores which used the compat_ trick for those ownerless anonymous semaphores which are taken in one context and released in another.

The annotation of the code which uses those special treated locks has been long discussed and one of the proposed solutions was to change all spinlocks which are converted by -rt to sleeping spinlocks from spinlock_t to lock_t and have another set of lock/unlock/trylock functions for those. That is definitely the _preferred_ solution, but it's a massive and horribly intrusive change. Steven was working on it for some time, but it simply does not scale IMNSHO.

I went the other way round. In -RT we have identified the locks which can _not_ be converted to sleeping locks and so I went there and converted them to atomic_spinlock_t and created a set of functions for them. I converted the already known locks to that type and fixed up all the functions (s/spin_*/atomic_spin_*/) which annotates the code and makes it clear what we are dealing with.

[ I admit "atomic_spinlock_t" is a horrible name, but it's the best
I came up with so far. If you have a better idea please feel free to add it to

http://rt.wiki.kernel.org/index.php/Atomic_Spinlock

instead of starting a bikeshed painting thread on the mailing lists about that name. Once we have something better it's just a sed script to fix it. ]

For !RT the spin_* functions are mapped to atomic_spin_* via inline functions which do the type conversion. That has another nice side
effect: some places in the kernel (mostly scheduler) use _raw_spin_* functions on locks to avoid the lockdep invocation in some places. With the type conversion a lock needs to be defined atomic_spinlock_t (or raw_spinlock_t) to have access to that _raw_spin_* functions. Using e.g. _raw_spin_lock() on a lock defined with spinlock_t/DEFINE_SPINLOCK will cause a compiler warning. I think that's a Good Thing.

On RT the spin_* functions are mapped to the corresponding rt_lock functions with inlines as well. Very simple and much more understandable than the nifty PICK_OP magic with the underscore convolution. :)

I did the same conversion for all (rw_)semaphores which are known from -rt to be ownerless anonymous semaphores; i.e. taken in one context and released in another. We renamed them to compat_(rw_)semaphores up to now and let the compiler pick the right function. Again here I went down the road and annotated the code for those with newly created anon_* and [read|write]_anon_* functions. In !RT the non annotated ones map to the anon_ functions and on RT we map them to the corresponging rt_* ones. This annotation should also be helpful to cover at least the non anonymous (rw_)semaphores via lockdep.

Part of that semaphore rework is the RFC patch series I posted recently to get rid of the init_MUTEX[_LOCKED] irritation (minus the ones which turned out to be wrong)

The spinlock and semaphore annotation work is separate now and can be found in the rt/atomic-lock and rt/semaphore branches of the -tip git repository, which leads me to the next important point:

- start of gitification

While reworking all of the above I went through the quilt queue and sorted out patches into different rt/ branches. If you clone the -tip git tree you'll find a bunch of branches starting with rt/. They contain various independent changes which are all part of the -rt patch. The combination of those branches can be found in the rt/base branch.

I still have a leftover of ~140 patches (roughly 40% of the -rt queue) which I committed into the rt/rt-2.6.31-rc4 branch just as is simply because I ran out of time. My annual summer vacation (helping my wife to run the kitchen in the church community kids summer camp) is starting on friday.

While the other rt/ branches are mostly bisectable the final one is not yet there. I restructured the patch queue in a logical way, but there is more work to be done to clean it up. So expect it to be replaced.

Further plans:

1) We seriously want to tackle the elimination of the PREEMPT_RT annoyance #1, aka BKL. The Big Kernel Lock is still used in ~330 files all across the kernel. A lot of work has been done already to push down the lock into the code which still thinks it needs to be protected by it. Some work has been done already in the (a little bit stale) kill-the-BKL and core/kill-the-BKL branches of the -tip git tree. If you want to help, please check those branches whether the code has been tackled already or not to avoid redundant work. If you decide to take care of one please note it on:

http://rt.wiki.kernel.org/index.php/Big_Kernel_Lock

2) I'm going on vacation for 10 days. Please send patches and bugreports^Wsuccess stories to the mailinglist as usual. There are folks looking out.

Enough said. Get the code and have fun!

Download locations:

http://rt.et.redhat.com/download/
http://www.kernel.org/pub/linux/kernel/projects/rt/

Git:

    git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/rt-2.6.31-rc4-rt1

Gitweb:

    http://git.kernel.org/?p=linux/kernel/git/tip/linux-2.6-tip.git;a=shortlog;h=rt/rt-2.6.31-rc4

Information on the RT patch can be found at:

http://rt.wiki.kernel.org/index.php/Main_Page

to build the 2.6.31-rc4-rt1 tree, the following patches should be applied:

    http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.30.tar.bz2
    http://kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.31-rc4.bz2
    http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.31-rc4-rt1.bz2

Thanks to Carsten Emde, Clark Williams and John Kacur who were testing my various steps to get the code into the shape where it is now.

Enjoy !

tglx

this change breaks the compilation of the binary nvidia kernel module. in order to build the module, i need to apply the attached patch.

best, tim

[email protected]
http://tim.klingt.org

Silence is only frightening to people who are compulsively
verbalizing.
  William S. Burroughs

@@ -721,7 +721,7 @@
 #define nv_up(lock)                     up(&lock)
 
 #if defined(CONFIG_PREEMPT_RT)
-#define NV_INIT_MUTEX(mutex) init_MUTEX(mutex)
+#define NV_INIT_MUTEX(mutex) semaphore_init(mutex)
 #else
 #if !defined(__SEMAPHORE_INITIALIZER) && defined(__COMPAT_SEMAPHORE_INITIALIZER)
 #define __SEMAPHORE_INITIALIZER __COMPAT_SEMAPHORE_INITIALIZER

Please report this to nvidia. They have accepted patches in the past for -rt support and have been reasonably easy to work with.

Darren Hart
IBM Linux Technology Center
Real-Time Linux Team

I hit this on boot on an IBM Thinkpad T60p (Intel Core Duo). Haven't had a chance to dig in yet, but wanted to post sooner rather than later.

[    4.764702] Freeing unused kernel memory: 552k freed
[    4.765205] Write protecting the kernel text: 4552k
[    4.765389] Write protecting the kernel read-only data: 1776k
[    4.766458] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[    4.766596] in_atomic(): 1, irqs_disabled(): 0, pid: 103, name: init
[    4.766723] Pid: 103, comm: init Not tainted 2.6.31-rc4-rt1-dvh01 #1
[    4.766848] Call Trace:
[    4.766973]  [<c012d881>] __might_sleep+0xe1/0x100
[    4.767099]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[    4.767224]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[    4.767350]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[    4.767477]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[    4.767604]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[    4.767728]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[    4.767852]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[    4.767977]  [<c037d634>] ? get_random_int+0xb4/0xe0
[    4.768114]  [<c0140481>] mmput+0x51/0xc0
[    4.768237]  [<c01ef651>] flush_old_exec+0x381/0x6c0
[    4.768361]  [<c01ea0c6>] ? vfs_read+0x126/0x190
[    4.768484]  [<c01eea3f>] ? kernel_read+0x3f/0x60
[    4.768609]  [<c02228cb>] load_elf_binary+0x33b/0x18c0
[    4.768734]  [<c012f06f>] ? __wake_up+0x3f/0x50
[    4.768859]  [<c01ccfee>] ? kunmap_high+0x7e/0xb0
[    4.768983]  [<c01ccede>] ? page_address+0x8e/0x90
[    4.769125]  [<c01cd15b>] ? kmap_high+0x13b/0x4c0
[    4.769248]  [<c01d1752>] ? __get_user_pages+0x112/0x3d0
[    4.769374]  [<c012f06f>] ? __wake_up+0x3f/0x50
[    4.769498]  [<c056cd9a>] ? __rt_spin_lock+0x2a/0x70
[    4.769623]  [<c0222590>] ? load_elf_binary+0x0/0x18c0
[    4.769747]  [<c01eedbd>] search_binary_handler+0xfd/0x300
[    4.769872]  [<c01f0568>] do_execve+0x228/0x300
[    4.769996]  [<c0319626>] ? strncpy_from_user+0x46/0x70
[    4.770121]  [<c0101b16>] sys_execve+0x36/0x60
[    4.770244]  [<c0103025>] syscall_call+0x7/0xb

Followed by numerous other instances of the same BUG point from various processes. The entire dmesg follows.

[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 2.6.31-rc4-rt1-dvh01 (dvhart@aeon) (gcc version 4.1.3 20080623 (prerelease) (Ubuntu 4.1.2-24ubuntu1)) #1 SMP PREEMPT RT Thu Jul 30 14:42:05 PDT 2009
[    0.000000] KERNEL supported cpus:
[    0.000000]   Intel GenuineIntel
[    0.000000]   AMD AuthenticAMD
[    0.000000]   NSC Geode by NSC
[    0.000000]   Cyrix CyrixInstead
[    0.000000]   Centaur CentaurHauls
[    0.000000]   Transmeta GenuineTMx86
[    0.000000]   Transmeta TransmetaCPU
[    0.000000]   UMC UMC UMC UMC
[    0.000000] BIOS-provided physical RAM map:
[    0.000000]  BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
[    0.000000]  BIOS-e820: 000000000009f000 - 00000000000a0000 (reserved)
[    0.000000]  BIOS-e820: 00000000000d2000 - 00000000000d4000 (reserved)
[    0.000000]  BIOS-e820: 00000000000dc000 - 0000000000100000 (reserved)
[    0.000000]  BIOS-e820: 0000000000100000 - 00000000bfed0000 (usable)
[    0.000000]  BIOS-e820: 00000000bfed0000 - 00000000bfedf000 (ACPI data)
[    0.000000]  BIOS-e820: 00000000bfedf000 - 00000000bff00000 (ACPI NVS)
[    0.000000]  BIOS-e820: 00000000bff00000 - 00000000c0000000 (reserved)
[    0.000000]  BIOS-e820: 00000000f0000000 - 00000000f4000000 (reserved)
[    0.000000]  BIOS-e820: 00000000fec00000 - 00000000fec10000 (reserved)
[    0.000000]  BIOS-e820: 00000000fed00000 - 00000000fed00400 (reserved)
[    0.000000]  BIOS-e820: 00000000fed14000 - 00000000fed1a000 (reserved)
[    0.000000]  BIOS-e820: 00000000fed1c000 - 00000000fed90000 (reserved)
[    0.000000]  BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
[    0.000000]  BIOS-e820: 00000000ff800000 - 0000000100000000 (reserved)
[    0.000000] DMI present.
[    0.000000] last_pfn = 0xbfed0 max_arch_pfn = 0x100000
[    0.000000] MTRR default type: uncachable
[    0.000000] MTRR fixed ranges enabled:
[    0.000000]   00000-9FFFF write-back
[    0.000000]   A0000-BFFFF uncachable
[    0.000000]   C0000-CFFFF write-protect
[    0.000000]   D0000-DBFFF uncachable
[    0.000000]   DC000-DFFFF write-back
[    0.000000]   E0000-FFFFF write-protect
[    0.000000] MTRR variable ranges enabled:
[    0.000000]   0 base 000000000 mask F80000000 write-back
[    0.000000]   1 base 080000000 mask FC0000000 write-back
[    0.000000]   2 base 0BFF00000 mask FFFF00000 uncachable
[    0.000000]   3 disabled
[    0.000000]   4 disabled
[    0.000000]   5 disabled
[    0.000000]   6 disabled
[    0.000000]   7 disabled
[    0.000000] e820 update range: 0000000000002000 - 0000000000006000 (usable) ==> (reserved)
[    0.000000] Scanning 1 areas for low memory corruption
[    0.000000] modified physical RAM map:
[    0.000000]  modified: 0000000000000000 - 0000000000002000 (usable)
[    0.000000]  modified: 0000000000002000 - 0000000000006000 (reserved)
[    0.000000]  modified: 0000000000006000 - 000000000009f000 (usable)
[    0.000000]  modified: 000000000009f000 - 00000000000a0000 (reserved)
[    0.000000]  modified: 00000000000d2000 - 00000000000d4000 (reserved)
[    0.000000]  modified: 00000000000dc000 - 0000000000100000 (reserved)
[    0.000000]  modified: 0000000000100000 - 00000000bfed0000 (usable)
[    0.000000]  modified: 00000000bfed0000 - 00000000bfedf000 (ACPI data)
[    0.000000]  modified: 00000000bfedf000 - 00000000bff00000 (ACPI NVS)
[    0.000000]  modified: 00000000bff00000 - 00000000c0000000 (reserved)
[    0.000000]  modified: 00000000f0000000 - 00000000f4000000 (reserved)
[    0.000000]  modified: 00000000fec00000 - 00000000fec10000 (reserved)
[    0.000000]  modified: 00000000fed00000 - 00000000fed00400 (reserved)
[    0.000000]  modified: 00000000fed14000 - 00000000fed1a000 (reserved)
[    0.000000]  modified: 00000000fed1c000 - 00000000fed90000 (reserved)
[    0.000000]  modified: 00000000fee00000 - 00000000fee01000 (reserved)
[    0.000000]  modified: 00000000ff800000 - 0000000100000000 (reserved)
[    0.000000] initial memory mapped : 0 - 00c00000
[    0.000000] init_memory_mapping: 0000000000000000-00000000377fe000
[    0.000000]  0000000000 - 0000400000 page 4k
[    0.000000]  0000400000 - 0037400000 page 2M
[    0.000000]  0037400000 - 00377fe000 page 4k
[    0.000000] kernel direct mapping tables up to 377fe000 @ 7000-c000
[    0.000000] RAMDISK: 37c6b000 - 37fefa92
[    0.000000] Allocated new RAMDISK: 008c1000 - 00c45a92
[    0.000000] Move RAMDISK from 0000000037c6b000 - 0000000037fefa91 to 008c1000 - 00c45a91
[    0.000000] ACPI: RSDP 000f67e0 00024 (v02 LENOVO)
[    0.000000] ACPI: XSDT bfed14a0 00084 (v01 LENOVO TP-79    00002220 LTP 00000000)
[    0.000000] ACPI: FACP bfed1600 000F4 (v03 LENOVO TP-79    00002220 LNVO 00000001)
[    0.000000] ACPI Warning: 32/64X length mismatch in Gpe1Block: 0/32 20090521 tbfadt-527
[    0.000000] ACPI Warning: Optional field Gpe1Block has zero address or length: 000000000000102C/0 20090521 tbfadt-558
[    0.000000] ACPI: DSDT bfed195e 0D467 (v01 LENOVO TP-79    00002220 MSFT 0100000E)
[    0.000000] ACPI: FACS bfef4000 00040
[    0.000000] ACPI: SSDT bfed17b4 001AA (v01 LENOVO TP-79    00002220 MSFT 0100000E)
[    0.000000] ACPI: ECDT bfededc5 00052 (v01 LENOVO TP-79    00002220 LNVO 00000001)
[    0.000000] ACPI: TCPA bfedee17 00032 (v02 LENOVO TP-79    00002220 LNVO 00000001)
[    0.000000] ACPI: APIC bfedee49 00068 (v01 LENOVO TP-79    00002220 LNVO 00000001)
[    0.000000] ACPI: MCFG bfedeeb1 0003C (v01 LENOVO TP-79    00002220 LNVO 00000001)
[    0.000000] ACPI: HPET bfedeeed 00038 (v01 LENOVO TP-79    00002220 LNVO 00000001)
[    0.000000] ACPI: BOOT bfedefd8 00028 (v01 LENOVO TP-79    00002220 LTP 00000001)
[    0.000000] ACPI: SSDT bfef2697 0025F (v01 LENOVO TP-79    00002220 INTL 20050513)
[    0.000000] ACPI: SSDT bfef28f6 000A6 (v01 LENOVO TP-79    00002220 INTL 20050513)
[    0.000000] ACPI: SSDT bfef299c 004F7 (v01 LENOVO TP-79    00002220 INTL 20050513)
[    0.000000] ACPI: SSDT bfef2e93 001D8 (v01 LENOVO TP-79    00002220 INTL 20050513)
[    0.000000] ACPI: Local APIC address 0xfee00000
[    0.000000] 2182MB HIGHMEM available.
[    0.000000] 887MB LOWMEM available.
[    0.000000]   mapped low ram: 0 - 377fe000
[    0.000000]   low ram: 0 - 377fe000
[    0.000000]   node 0 low ram: 00000000 - 377fe000
[    0.000000]   node 0 bootmap 00008000 - 0000ef00
[    0.000000] (9 early reservations) ==> bootmem [0000000000 - 00377fe000]
[    0.000000]   #0 [0000000000 - 0000001000]   BIOS data page ==> [0000000000 - 0000001000]
[    0.000000]   #1 [0000001000 - 0000002000]    EX TRAMPOLINE ==> [0000001000 - 0000002000]
[    0.000000]   #2 [0000006000 - 0000007000]       TRAMPOLINE ==> [0000006000 - 0000007000]
[    0.000000]   #3 [0000100000 - 00008bc4cc]    TEXT DATA BSS ==> [0000100000 - 00008bc4cc]
[    0.000000]   #4 [000009f000 - 0000100000]    BIOS reserved ==> [000009f000 - 0000100000]
[    0.000000]   #5 [00008bd000 - 00008c0138]              BRK ==> [00008bd000 - 00008c0138]
[    0.000000]   #6 [0000007000 - 0000008000]          PGTABLE ==> [0000007000 - 0000008000]
[    0.000000]   #7 [00008c1000 - 0000c45a92]      NEW RAMDISK ==> [00008c1000 - 0000c45a92]
[    0.000000]   #8 [0000008000 - 000000f000]          BOOTMAP ==> [0000008000 - 000000f000]
[    0.000000] found SMP MP-table at [c00f6810] f6810
[    0.000000] Zone PFN ranges:
[    0.000000]   DMA      0x00000000 -> 0x00001000
[    0.000000]   Normal   0x00001000 -> 0x000377fe
[    0.000000]   HighMem  0x000377fe -> 0x000bfed0
[    0.000000] Movable zone start PFN for each node
[    0.000000] early_node_map[3] active PFN ranges
[    0.000000]     0: 0x00000000 -> 0x00000002
[    0.000000]     0: 0x00000006 -> 0x0000009f
[    0.000000]     0: 0x00000100 -> 0x000bfed0
[    0.000000] On node 0 totalpages: 786027
[    0.000000] free_area_init_node: node 0, pgdat c076ae80, node_mem_map c1000000
[    0.000000]   DMA zone: 32 pages used for memmap
[    0.000000]   DMA zone: 0 pages reserved
[    0.000000]   DMA zone: 3963 pages, LIFO batch:0
[    0.000000]   Normal zone: 1744 pages used for memmap
[    0.000000]   Normal zone: 221486 pages, LIFO batch:31
[    0.000000]   HighMem zone: 4366 pages used for memmap
[    0.000000]   HighMem zone: 554436 pages, LIFO batch:31
[    0.000000] Using APIC driver default
[    0.000000] ACPI: PM-Timer IO Port: 0x1008
[    0.000000] ACPI: Local APIC address 0xfee00000
[    0.000000] ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
[    0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
[    0.000000] ACPI: IOAPIC (id[0x01] address[0xfec00000] gsi_base[0])
[    0.000000] IOAPIC[0]: apic_id 1, version 32, address 0xfec00000, GSI 0-23
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[    0.000000] ACPI: IRQ0 used by override.
[    0.000000] ACPI: IRQ2 used by override.
[    0.000000] ACPI: IRQ9 used by override.
[    0.000000] Enabling APIC mode:  Flat.  Using 1 I/O APICs
[    0.000000] Using ACPI (MADT) for SMP configuration information
[    0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000
[    0.000000] SMP: Allowing 2 CPUs, 0 hotplug CPUs
[    0.000000] nr_irqs_gsi: 24
[    0.000000] PM: Registered nosave memory: 0000000000002000 - 0000000000006000
[    0.000000] PM: Registered nosave memory: 000000000009f000 - 00000000000a0000
[    0.000000] PM: Registered nosave memory: 00000000000a0000 - 00000000000d2000
[    0.000000] PM: Registered nosave memory: 00000000000d2000 - 00000000000d4000
[    0.000000] PM: Registered nosave memory: 00000000000d4000 - 00000000000dc000
[    0.000000] PM: Registered nosave memory: 00000000000dc000 - 0000000000100000
[    0.000000] Allocating PCI resources starting at c0000000 (gap: c0000000:30000000)
[    0.000000] NR_CPUS:8 nr_cpumask_bits:8 nr_cpu_ids:2 nr_node_ids:1
[    0.000000] PERCPU: Embedded 13 pages at c282e000, static data 31876 bytes
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 779885
[    0.000000] Kernel command line: root=/dev/sda1 ro
[    0.000000] PID hash table entries: 4096 (order: 12, 16384 bytes)
[    0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
[    0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
[    0.000000] Enabling fast FPU save and restore... done.
[    0.000000] Enabling unmasked SIMD FPU exception support... done.
[    0.000000] Initializing CPU#0
[    0.000000] allocated 15722560 bytes of page_cgroup
[    0.000000] please try 'cgroup_disable=memory' option if you don't want memory cgroups
[    0.000000] Initializing HighMem for node 0 (000377fe:000bfed0)
[    0.000000] Memory: 3090592k/3144512k available (4551k kernel code, 52584k reserved, 2141k data, 552k init, 2235208k highmem)
[    0.000000] virtual kernel memory layout:
[    0.000000]     fixmap  : 0xfff1d000 - 0xfffff000   ( 904 kB)
[    0.000000]     pkmap   : 0xff800000 - 0xffc00000   (4096 kB)
[    0.000000]     vmalloc : 0xf7ffe000 - 0xff7fe000   ( 120 MB)
[    0.000000]     lowmem  : 0xc0000000 - 0xf77fe000   ( 887 MB)
[    0.000000]       .init : 0xc0791000 - 0xc081b000   ( 552 kB)
[    0.000000]       .data : 0xc0571f24 - 0xc0789468   (2141 kB)
[    0.000000]       .text : 0xc0100000 - 0xc0571f24   (4551 kB)
[    0.000000] Checking if this processor honours the WP bit even in supervisor mode...Ok.
[    0.000000] Real-Time Preemption Support (C) 2004-2007 Ingo Molnar
[    0.000000] Preemptible RCU implementation.
[    0.000000] NR_IRQS:512
[    0.000000] Extended CMOS year: 2000
[    0.000000] Fast TSC calibration using PIT
[    0.000000] Detected 2161.452 MHz processor.
[    0.003161] Console: colour VGA+ 80x25
[    0.003165] console [tty0] enabled
[    0.004000] hpet clockevent registered
[    0.004000] HPET: 3 timers in total, 0 timers will be used for per-cpu timer
[    0.004000] Calibrating delay loop (skipped), value calculated using timer frequency.. 4322.90 BogoMIPS (lpj=8645808)
[    0.004000] Security Framework initialized
[    0.004000] SELinux:  Disabled at boot.
[    0.004000] Mount-cache hash table entries: 512
[    0.004000] Initializing cgroup subsys ns
[    0.004000] Initializing cgroup subsys cpuacct
[    0.004000] Initializing cgroup subsys memory
[    0.004000] Initializing cgroup subsys freezer
[    0.004000] CPU: L1 I cache: 32K, L1 D cache: 32K
[    0.004000] CPU: L2 cache: 2048K
[    0.004000] CPU: Physical Processor ID: 0
[    0.004000] CPU: Processor Core ID: 0
[    0.004000] using mwait in idle threads.
[    0.004000] Performance Counters: no PMU driver, software counters only.
[    0.004000] Checking 'hlt' instruction... OK.
[    0.017786] ACPI: Core revision 20090521
[    0.044008] ftrace: converting mcount calls to 0f 1f 44 00 00
[    0.044136] ftrace: allocating 20522 entries in 41 pages
[    0.048461] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
[    0.089536] CPU0: Genuine Intel(R) CPU           T2600  @ 2.16GHz stepping 08
[    0.116025] Booting processor 1 APIC 0x1 ip 0x6000
[    0.092001] Initializing CPU#1
[    0.092001] Calibrating delay using timer specific routine.. 4322.55 BogoMIPS (lpj=8645106)
[    0.092001] CPU: L1 I cache: 32K, L1 D cache: 32K
[    0.092001] CPU: L2 cache: 2048K
[    0.092001] CPU: Physical Processor ID: 0
[    0.092001] CPU: Processor Core ID: 1
[    0.204552] CPU1: Genuine Intel(R) CPU           T2600  @ 2.16GHz stepping 08
[    0.205622] checking TSC synchronization [CPU#0 -> CPU#1]:
[    0.208001] Measured 615849 cycles TSC warp between CPUs, turning off TSC clock.
[    0.208001] Marking TSC unstable due to check_tsc_sync_source failed
[    0.208082] Brought up 2 CPUs
[    0.208202] Total of 2 processors activated (8645.45 BogoMIPS).
[    0.208379] CPU0 attaching sched-domain:
[    0.208382]  domain 0: span 0-1 level MC
[    0.208384]   groups: 0 1
[    0.208390] CPU1 attaching sched-domain:
[    0.208392]  domain 0: span 0-1 level MC
[    0.208394]   groups: 1 0
[    0.212156] Booting paravirtualized kernel on bare hardware
[    0.212459] regulator: core version 0.5
[    0.212459] Time: 23:09:12  Date: 07/30/09
[    0.212459] NET: Registered protocol family 16
[    0.212635] EISA bus registered
[    0.212760] ACPI FADT declares the system doesn't support PCIe ASPM, so disable it
[    0.212895] ACPI: bus type pci registered
[    0.213091] PCI: MCFG configuration 0: base f0000000 segment 0 buses 0 - 63
[    0.213218] PCI: MCFG area at f0000000 reserved in E820
[    0.213340] PCI: Using MMCONFIG for extended config space
[    0.213462] PCI: Using configuration type 1 for base access
[    0.216061] bio: create slab <bio-0> at 0
[    0.216810] ACPI: EC: EC description table is found, configuring boot EC
[    0.224028] ACPI: EC: non-query interrupt received, switching to interrupt mode
[    0.876428] ACPI: Interpreter enabled
[    0.876559] ACPI: (supports S0 S3 S4 S5)
[    0.877126] ACPI: Using IOAPIC for interrupt routing
[    1.513077] ACPI: EC: GPE = 0x1c, I/O: command/status = 0x66, data = 0x62
[    1.513204] ACPI: EC: driver started in interrupt mode
[    1.516055] ACPI: Power Resource [PUBS] (on)
[    2.768822] ACPI: ACPI Dock Station Driver: 3 docks/bays found
[    2.769480] ACPI: PCI Root Bridge [PCI0] (0000:00)
[    2.769709] pci 0000:00:01.0: PME# supported from D0 D3hot D3cold
[    2.769835] pci 0000:00:01.0: PME# disabled
[    2.770041] pci 0000:00:1b.0: reg 10 64bit mmio: [0xee400000-0xee403fff]
[    2.770102] pci 0000:00:1b.0: PME# supported from D0 D3hot D3cold
[    2.770229] pci 0000:00:1b.0: PME# disabled
[    2.770431] pci 0000:00:1c.0: PME# supported from D0 D3hot D3cold
[    2.770558] pci 0000:00:1c.0: PME# disabled
[    2.770761] pci 0000:00:1c.1: PME# supported from D0 D3hot D3cold
[    2.770888] pci 0000:00:1c.1: PME# disabled
[    2.771092] pci 0000:00:1c.2: PME# supported from D0 D3hot D3cold
[    2.772088] pci 0000:00:1c.2: PME# disabled
[    2.772292] pci 0000:00:1c.3: PME# supported from D0 D3hot D3cold
[    2.772419] pci 0000:00:1c.3: PME# disabled
[    2.772602] pci 0000:00:1d.0: reg 20 io port: [0x1800-0x181f]
[    2.772666] pci 0000:00:1d.1: reg 20 io port: [0x1820-0x183f]
[    2.772729] pci 0000:00:1d.2: reg 20 io port: [0x1840-0x185f]
[    2.772793] pci 0000:00:1d.3: reg 20 io port: [0x1860-0x187f]
[    2.772862] pci 0000:00:1d.7: reg 10 32bit mmio: [0xee404000-0xee4043ff]
[    2.772924] pci 0000:00:1d.7: PME# supported from D0 D3hot D3cold
[    2.773052] pci 0000:00:1d.7: PME# disabled
[    2.773334] pci 0000:00:1f.0: quirk: region 1000-107f claimed by ICH6 ACPI/GPIO/TCO
[    2.773472] pci 0000:00:1f.0: quirk: region 1180-11bf claimed by ICH6 GPIO
[    2.773600] pci 0000:00:1f.0: ICH7 LPC Generic IO decode 1 PIO at 1600 (mask 007f)
[    2.773737] pci 0000:00:1f.0: ICH7 LPC Generic IO decode 2 PIO at 15e0 (mask 000f)
[    2.773874] pci 0000:00:1f.0: ICH7 LPC Generic IO decode 3 PIO at 1680 (mask 001f)
[    2.774059] pci 0000:00:1f.1: reg 10 io port: [0x00-0x07]
[    2.774067] pci 0000:00:1f.1: reg 14 io port: [0x00-0x03]
[    2.774075] pci 0000:00:1f.1: reg 18 io port: [0x00-0x07]
[    2.774083] pci 0000:00:1f.1: reg 1c io port: [0x00-0x03]
[    2.774091] pci 0000:00:1f.1: reg 20 io port: [0x1880-0x188f]
[    2.774156] pci 0000:00:1f.2: reg 10 io port: [0x18c8-0x18cf]
[    2.774164] pci 0000:00:1f.2: reg 14 io port: [0x18ac-0x18af]
[    2.774173] pci 0000:00:1f.2: reg 18 io port: [0x18c0-0x18c7]
[    2.774181] pci 0000:00:1f.2: reg 1c io port: [0x18a8-0x18ab]
[    2.774189] pci 0000:00:1f.2: reg 20 io port: [0x18b0-0x18bf]
[    2.774197] pci 0000:00:1f.2: reg 24 32bit mmio: [0xee404400-0xee4047ff]
[    2.774234] pci 0000:00:1f.2: PME# supported from D3hot
[    2.774359] pci 0000:00:1f.2: PME# disabled
[    2.774541] pci 0000:00:1f.3: reg 20 io port: [0x18e0-0x18ff]
[    2.774638] pci 0000:01:00.0: reg 10 32bit mmio: [0xd0000000-0xdfffffff]
[    2.774651] pci 0000:01:00.0: reg 14 io port: [0x2000-0x20ff]
[    2.774664] pci 0000:01:00.0: reg 18 32bit mmio: [0xee100000-0xee10ffff]
[    2.774701] pci 0000:01:00.0: reg 30 32bit mmio: [0x000000-0x01ffff]
[    2.774753] pci 0000:01:00.0: supports D1 D2
[    2.774823] pci 0000:00:01.0: bridge io port: [0x2000-0x2fff]
[    2.774827] pci 0000:00:01.0: bridge 32bit mmio: [0xee100000-0xee1fffff]
[    2.774832] pci 0000:00:01.0: bridge 64bit mmio pref: [0xd0000000-0xdfffffff]
[    2.774974] pci 0000:02:00.0: reg 10 32bit mmio: [0xee000000-0xee01ffff]
[    2.774999] pci 0000:02:00.0: reg 18 io port: [0x3000-0x301f]
[    2.775105] pci 0000:02:00.0: PME# supported from D0 D3hot D3cold
[    2.775295] pci 0000:02:00.0: PME# disabled
[    2.775552] pci 0000:00:1c.0: bridge io port: [0x3000-0x3fff]
[    2.775558] pci 0000:00:1c.0: bridge 32bit mmio: [0xee000000-0xee0fffff]
[    2.775635] pci 0000:03:00.0: reg 10 64bit mmio: [0xedf00000-0xedf0ffff]
[    2.775799] pci 0000:00:1c.1: bridge io port: [0x4000-0x5fff]
[    2.775804] pci 0000:00:1c.1: bridge 32bit mmio: [0xec000000-0xedffffff]
[    2.775812] pci 0000:00:1c.1: bridge 64bit mmio pref: [0xe4000000-0xe40fffff]
[    2.775872] pci 0000:00:1c.2: bridge io port: [0x6000-0x7fff]
[    2.775877] pci 0000:00:1c.2: bridge 32bit mmio: [0xe8000000-0xe9ffffff]
[    2.775885] pci 0000:00:1c.2: bridge 64bit mmio pref: [0xe4100000-0xe41fffff]
[    2.775945] pci 0000:00:1c.3: bridge io port: [0x8000-0x9fff]
[    2.775950] pci 0000:00:1c.3: bridge 32bit mmio: [0xea000000-0xebffffff]
[    2.776015] pci 0000:00:1c.3: bridge 64bit mmio pref: [0xe4200000-0xe42fffff]
[    2.776069] pci 0000:15:00.0: reg 10 32bit mmio: [0xe4300000-0xe4300fff]
[    2.776099] pci 0000:15:00.0: supports D1 D2
[    2.776102] pci 0000:15:00.0: PME# supported from D0 D1 D2 D3hot D3cold
[    2.776231] pci 0000:15:00.0: PME# disabled
[    2.776420] pci 0000:00:1e.0: transparent bridge
[    2.776544] pci 0000:00:1e.0: bridge io port: [0xa000-0xdfff]
[    2.776549] pci 0000:00:1e.0: bridge 32bit mmio: [0xe4300000-0xe7ffffff]
[    2.776557] pci 0000:00:1e.0: bridge 64bit mmio pref: [0xe0000000-0xe3ffffff]
[    2.776615] pci_bus 0000:00: on NUMA node 0
[    2.776620] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
[    2.776778] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.AGP_._PRT]
[    2.776855] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.EXP0._PRT]
[    2.776934] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.EXP1._PRT]
[    2.777013] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.EXP2._PRT]
[    2.777099] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.EXP3._PRT]
[    2.777185] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCI1._PRT]
[    2.781981] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 9 10 *11)
[    2.783352] ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 9 10 *11)
[    2.784697] ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 9 10 *11)
[    2.786070] ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 9 10 *11)
[    2.787441] ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 9 10 *11)
[    2.788851] ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 9 10 *11)
[    2.790220] ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 9 10 *11)
[    2.791589] ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 7 9 10 *11)
[    2.792994] SCSI subsystem initialized
[    2.793121] libata version 3.00 loaded.
[    2.793121] usbcore: registered new interface driver usbfs
[    2.793121] usbcore: registered new interface driver hub
[    2.793121] usbcore: registered new device driver usb
[    2.793121] ACPI: WMI: Mapper loaded
[    2.793121] PCI: Using ACPI for IRQ routing
[    2.828022] Bluetooth: Core ver 2.15
[    2.828145] NET: Registered protocol family 31
[    2.828145] Bluetooth: HCI device and connection manager initialized
[    2.828264] Bluetooth: HCI socket layer initialized
[    2.828386] NET: Registered protocol family 8
[    2.828506] NET: Registered protocol family 20
[    2.828636] NetLabel: Initializing
[    2.828755] NetLabel:  domain hash size = 128
[    2.828874] NetLabel:  protocols = UNLABELED CIPSOv4
[    2.829010] NetLabel:  unlabeled traffic allowed by default
[    2.829166] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0
[    2.829708] hpet0: 3 comparators, 64-bit 14.318180 MHz counter
[    2.885024] pnp: PnP ACPI init
[    2.885159] ACPI: bus type pnp registered
[    2.890774] pnp: PnP ACPI: found 14 devices
[    2.890895] ACPI: ACPI bus type pnp unregistered
[    2.891017] PnPBIOS: Disabled by ACPI PNP
[    2.891147] system 00:00: iomem range 0x0-0x9ffff could not be reserved
[    2.891274] system 00:00: iomem range 0xc0000-0xc3fff could not be reserved
[    2.891400] system 00:00: iomem range 0xc4000-0xc7fff could not be reserved
[    2.891527] system 00:00: iomem range 0xc8000-0xcbfff could not be reserved
[    2.891653] system 00:00: iomem range 0xcc000-0xcffff could not be reserved
[    2.891780] system 00:00: iomem range 0xd0000-0xd3fff could not be reserved
[    2.891908] system 00:00: iomem range 0xdc000-0xdffff could not be reserved
[    2.892037] system 00:00: iomem range 0xe0000-0xe3fff could not be reserved
[    2.892163] system 00:00: iomem range 0xe4000-0xe7fff could not be reserved
[    2.892290] system 00:00: iomem range 0xe8000-0xebfff could not be reserved
[    2.892417] system 00:00: iomem range 0xec000-0xeffff could not be reserved
[    2.892544] system 00:00: iomem range 0xf0000-0xfffff could not be reserved
[    2.892671] system 00:00: iomem range 0x100000-0xbfffffff could not be reserved
[    2.892805] system 00:00: iomem range 0xfec00000-0xfed3ffff could not be reserved
[    2.892942] system 00:00: iomem range 0xfed41000-0xffffffff could not be reserved
[    2.893103] system 00:02: ioport range 0x164e-0x164f has been reserved
[    2.893228] system 00:02: ioport range 0x1000-0x107f has been reserved
[    2.893354] system 00:02: ioport range 0x1180-0x11bf has been reserved
[    2.893480] system 00:02: ioport range 0x800-0x80f has been reserved
[    2.893605] system 00:02: ioport range 0x15e0-0x15ef has been reserved
[    2.893731] system 00:02: ioport range 0x1600-0x165f could not be reserved
[    2.893858] system 00:02: iomem range 0xf0000000-0xf3ffffff has been reserved
[    2.893986] system 00:02: iomem range 0xfed1c000-0xfed1ffff has been reserved
[    2.894113] system 00:02: iomem range 0xfed14000-0xfed17fff has been reserved
[    2.894245] system 00:02: iomem range 0xfed18000-0xfed18fff has been reserved
[    2.894372] system 00:02: iomem range 0xfed19000-0xfed19fff has been reserved
[    2.929244] pci 0000:00:01.0: PCI bridge, secondary bus 0000:01
[    2.929369] pci 0000:00:01.0:   IO window: 0x2000-0x2fff
[    2.929494] pci 0000:00:01.0:   MEM window: 0xee100000-0xee1fffff
[    2.929620] pci 0000:00:01.0:   PREFETCH window: 0x000000d0000000-0x000000dfffffff
[    2.929757] pci 0000:00:1c.0: PCI bridge, secondary bus 0000:02
[    2.929882] pci 0000:00:1c.0:   IO window: 0x3000-0x3fff
[    2.930009] pci 0000:00:1c.0:   MEM window: 0xee000000-0xee0fffff
[    2.930135] pci 0000:00:1c.0:   PREFETCH window: disabled
[    2.930260] pci 0000:00:1c.1: PCI bridge, secondary bus 0000:03
[    2.930385] pci 0000:00:1c.1:   IO window: 0x4000-0x5fff
[    2.930512] pci 0000:00:1c.1:   MEM window: 0xec000000-0xedffffff
[    2.930638] pci 0000:00:1c.1:   PREFETCH window: 0x000000e4000000-0x000000e40fffff
[    2.930779] pci 0000:00:1c.2: PCI bridge, secondary bus 0000:04
[    2.930904] pci 0000:00:1c.2:   IO window: 0x6000-0x7fff
[    2.931031] pci 0000:00:1c.2:   MEM window: 0xe8000000-0xe9ffffff
[    2.931157] pci 0000:00:1c.2:   PREFETCH window: 0x000000e4100000-0x000000e41fffff
[    2.931298] pci 0000:00:1c.3: PCI bridge, secondary bus 0000:0c
[    2.931423] pci 0000:00:1c.3:   IO window: 0x8000-0x9fff
[    2.931549] pci 0000:00:1c.3:   MEM window: 0xea000000-0xebffffff
[    2.931676] pci 0000:00:1c.3:   PREFETCH window: 0x000000e4200000-0x000000e42fffff
[    2.931819] pci 0000:15:00.0: CardBus bridge, secondary bus 0000:16
[    2.931944] pci 0000:15:00.0:   IO window: 0x00a000-0x00a0ff
[    2.932076] pci 0000:15:00.0:   IO window: 0x00a400-0x00a4ff
[    2.932203] pci 0000:15:00.0:   PREFETCH window: 0xe0000000-0xe3ffffff
[    2.932332] pci 0000:15:00.0:   MEM window: 0xc0000000-0xc3ffffff
[    2.932460] pci 0000:00:1e.0: PCI bridge, secondary bus 0000:15
[    2.932585] pci 0000:00:1e.0:   IO window: 0xa000-0xdfff
[    2.932712] pci 0000:00:1e.0:   MEM window: 0xe4300000-0xe7ffffff
[    2.932840] pci 0000:00:1e.0:   PREFETCH window: 0x000000e0000000-0x000000e3ffffff
[    2.932989] pci 0000:00:01.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    2.933138] pci 0000:00:01.0: setting latency timer to 64
[    2.933148] pci 0000:00:1c.0: PCI INT A -> GSI 20 (level, low) -> IRQ 20
[    2.933276] pci 0000:00:1c.0: setting latency timer to 64
[    2.933286] pci 0000:00:1c.1: PCI INT B -> GSI 21 (level, low) -> IRQ 21
[    2.933415] pci 0000:00:1c.1: setting latency timer to 64
[    2.933424] pci 0000:00:1c.2: PCI INT C -> GSI 22 (level, low) -> IRQ 22
[    2.933552] pci 0000:00:1c.2: setting latency timer to 64
[    2.933562] pci 0000:00:1c.3: PCI INT D -> GSI 23 (level, low) -> IRQ 23
[    2.933690] pci 0000:00:1c.3: setting latency timer to 64
[    2.933696] pci 0000:00:1e.0: enabling device (0005 -> 0007)
[    2.933823] pci 0000:00:1e.0: setting latency timer to 64
[    2.933834] pci 0000:15:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    2.933965] pci_bus 0000:00: resource 0 io:  [0x00-0xffff]
[    2.933968] pci_bus 0000:00: resource 1 mem: [0x000000-0xffffffff]
[    2.933971] pci_bus 0000:01: resource 0 io:  [0x2000-0x2fff]
[    2.933974] pci_bus 0000:01: resource 1 mem: [0xee100000-0xee1fffff]
[    2.933977] pci_bus 0000:01: resource 2 pref mem [0xd0000000-0xdfffffff]
[    2.933980] pci_bus 0000:02: resource 0 io:  [0x3000-0x3fff]
[    2.933982] pci_bus 0000:02: resource 1 mem: [0xee000000-0xee0fffff]
[    2.933985] pci_bus 0000:03: resource 0 io:  [0x4000-0x5fff]
[    2.933988] pci_bus 0000:03: resource 1 mem: [0xec000000-0xedffffff]
[    2.933991] pci_bus 0000:03: resource 2 pref mem [0xe4000000-0xe40fffff]
[    2.933994] pci_bus 0000:04: resource 0 io:  [0x6000-0x7fff]
[    2.933997] pci_bus 0000:04: resource 1 mem: [0xe8000000-0xe9ffffff]
[    2.933999] pci_bus 0000:04: resource 2 pref mem [0xe4100000-0xe41fffff]
[    2.934002] pci_bus 0000:0c: resource 0 io:  [0x8000-0x9fff]
[    2.934005] pci_bus 0000:0c: resource 1 mem: [0xea000000-0xebffffff]
[    2.934008] pci_bus 0000:0c: resource 2 pref mem [0xe4200000-0xe42fffff]
[    2.934011] pci_bus 0000:15: resource 0 io:  [0xa000-0xdfff]
[    2.934014] pci_bus 0000:15: resource 1 mem: [0xe4300000-0xe7ffffff]
[    2.934017] pci_bus 0000:15: resource 2 pref mem [0xe0000000-0xe3ffffff]
[    2.934019] pci_bus 0000:15: resource 3 io:  [0x00-0xffff]
[    2.934022] pci_bus 0000:15: resource 4 mem: [0x000000-0xffffffff]
[    2.934025] pci_bus 0000:16: resource 0 io:  [0xa000-0xa0ff]
[    2.934027] pci_bus 0000:16: resource 1 io:  [0xa400-0xa4ff]
[    2.934030] pci_bus 0000:16: resource 2 pref mem [0xe0000000-0xe3ffffff]
[    2.934033] pci_bus 0000:16: resource 3 mem: [0xc0000000-0xc3ffffff]
[    2.934089] NET: Registered protocol family 2
[    2.934323] IP route cache hash table entries: 32768 (order: 5, 131072 bytes)
[    2.934830] TCP established hash table entries: 131072 (order: 8, 1048576 bytes)
[    2.935740] TCP bind hash table entries: 65536 (order: 9, 2097152 bytes)
[    2.937135] TCP: Hash tables configured (established 131072 bind 65536)
[    2.937268] TCP reno registered
[    2.937535] NET: Registered protocol family 1
[    2.937728] Trying to unpack rootfs image as initramfs...
[    3.032566] Freeing initrd memory: 3602k freed
[    3.036474] Simple Boot Flag at 0x35 set to 0x1
[    3.036744] cpufreq-nforce2: No nForce2 chipset.
[    3.036904] Scanning for low memory corruption every 60 seconds
[    3.037277] audit: initializing netlink socket (disabled)
[    3.037420] type=2000 audit(1248995354.037:1): initialized
[    3.041807] highmem bounce pool size: 64 pages
[    3.041932] HugeTLB registered 4 MB page size, pre-allocated 0 pages
[    3.050200] VFS: Disk quotas dquot_6.5.2
[    3.050366] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    3.050839] fuse init (API version 7.12)
[    3.050999] msgmni has been set to 1679
[    3.059383] alg: No test for stdrng (krng)
[    3.059518] io scheduler noop registered
[    3.059638] io scheduler anticipatory registered
[    3.059760] io scheduler deadline registered
[    3.059896] io scheduler cfq registered (default)
[    3.060144] pci 0000:01:00.0: Boot video device
[    3.060285] pcieport-driver 0000:00:01.0: irq 24 for MSI/MSI-X
[    3.060292] pcieport-driver 0000:00:01.0: setting latency timer to 64
[    3.060422] pcieport-driver 0000:00:1c.0: irq 25 for MSI/MSI-X
[    3.060432] pcieport-driver 0000:00:1c.0: setting latency timer to 64
[    3.060596] pcieport-driver 0000:00:1c.1: irq 26 for MSI/MSI-X
[    3.060607] pcieport-driver 0000:00:1c.1: setting latency timer to 64
[    3.060771] pcieport-driver 0000:00:1c.2: irq 27 for MSI/MSI-X
[    3.060782] pcieport-driver 0000:00:1c.2: setting latency timer to 64
[    3.060943] pcieport-driver 0000:00:1c.3: irq 28 for MSI/MSI-X
[    3.060954] pcieport-driver 0000:00:1c.3: setting latency timer to 64
[    3.061075] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[    3.061822] pciehp 0000:00:1c.0:pcie04: HPC vendor_id 8086 device_id 27d0 ss_vid 0 ss_did 0
[    3.062034] pciehp 0000:00:1c.0:pcie04: service driver pciehp loaded
[    3.062057] pciehp 0000:00:1c.1:pcie04: HPC vendor_id 8086 device_id 27d2 ss_vid 0 ss_did 0
[    3.062263] pciehp 0000:00:1c.1:pcie04: service driver pciehp loaded
[    3.062285] pciehp 0000:00:1c.2:pcie04: HPC vendor_id 8086 device_id 27d4 ss_vid 0 ss_did 0
[    3.062491] pciehp 0000:00:1c.2:pcie04: service driver pciehp loaded
[    3.062514] pciehp 0000:00:1c.3:pcie04: HPC vendor_id 8086 device_id 27d6 ss_vid 0 ss_did 0
[    3.062721] pciehp 0000:00:1c.3:pcie04: service driver pciehp loaded
[    3.062731] pciehp: PCI Express Hot Plug Controller Driver version: 0.4
[    3.063554] ACPI: AC Adapter [AC] (on-line)
[    3.063764] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0
[    3.063900] ACPI: Power Button [PWRF]
[    3.064086] input: Lid Switch as /devices/LNXSYSTM:00/device:00/PNP0C0D:00/input/input1
[    3.064738] ACPI: Lid Switch [LID]
[    3.064907] input: Sleep Button as /devices/LNXSYSTM:00/device:00/PNP0C0E:00/input/input2
[    3.065081] ACPI: Sleep Button [SLPB]
[    3.065958] ACPI: SSDT bfef1d36 00282 (v01  PmRef  Cpu0Ist 00000100 INTL 20050513)
[    3.066975] ACPI: SSDT bfef203d 0065A (v01  PmRef  Cpu0Cst 00000100 INTL 20050513)
[    3.070496] ACPI Warning: Invalid throttling state, reset 20090521 processor_throttling-843
[    3.071828] ACPI: CPU0 (power states: C1[C1] C2[C2] C3[C3])
[    3.072415] processor LNXCPU:00: registered as cooling_device0
[    3.072540] ACPI: Processor [CPU0] (supports 8 throttling states)
[    3.073300] ACPI: SSDT bfef1c6e 000C8 (v01  PmRef  Cpu1Ist 00000100 INTL 20050513)
[    3.074111] ACPI: SSDT bfef1fb8 00085 (v01  PmRef  Cpu1Cst 00000100 INTL 20050513)
[    3.075178] ACPI Warning: Invalid throttling state, reset 20090521 processor_throttling-843
[    3.076357] ACPI: CPU1 (power states: C1[C1] C2[C2] C3[C3])
[    3.076916] processor LNXCPU:01: registered as cooling_device1
[    3.077057] ACPI: Processor [CPU1] (supports 8 throttling states)
[    3.713844] thermal LNXTHERM:01: registered as thermal_zone0
[    3.713974] ACPI: Thermal Zone [THM0] (60 C)
[    3.715529] thermal LNXTHERM:02: registered as thermal_zone1
[    3.715660] ACPI: Thermal Zone [THM1] (58 C)
[    3.715845] isapnp: Scanning for PnP cards...
[    3.760269] ACPI: Battery Slot [BAT0] (battery present)
[    4.070958] isapnp: No Plug & Play device found
[    4.072378] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    4.072673] Platform driver 'serial8250' needs updating - please use dev_pm_ops
[    4.073727] serial 00:0a: activated
[    4.073988] 00:0a: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
[    4.075361] brd: module loaded
[    4.076030] loop: module loaded
[    4.076236] input: Macintosh mouse button emulation as /devices/virtual/input/input3
[    4.076456] ahci 0000:00:1f.2: version 3.0
[    4.076471] ahci 0000:00:1f.2: PCI INT B -> GSI 16 (level, low) -> IRQ 16
[    4.076636] ahci 0000:00:1f.2: irq 29 for MSI/MSI-X
[    4.076706] ahci 0000:00:1f.2: AHCI 0001.0100 32 slots 4 ports 1.5 Gbps 0x1 impl SATA mode
[    4.076844] ahci 0000:00:1f.2: flags: 64bit ncq pm led clo pio slum part
[    4.076972] ahci 0000:00:1f.2: setting latency timer to 64
[    4.077147] scsi0 : ahci
[    4.077369] scsi1 : ahci
[    4.077561] scsi2 : ahci
[    4.077755] scsi3 : ahci
[    4.077966] ata1: SATA max UDMA/133 abar m1024@0xee404400 port 0xee404500 irq 29
[    4.078101] ata2: DUMMY
[    4.078217] ata3: DUMMY
[    4.078333] ata4: DUMMY
[    4.078528] ata_piix 0000:00:1f.1: version 2.13
[    4.078538] ata_piix 0000:00:1f.1: PCI INT C -> GSI 16 (level, low) -> IRQ 16
[    4.078702] ata_piix 0000:00:1f.1: setting latency timer to 64
[    4.078845] scsi4 : ata_piix
[    4.079037] scsi5 : ata_piix
[    4.079887] ata5: PATA max UDMA/100 cmd 0x1f0 ctl 0x3f6 bmdma 0x1880 irq 14
[    4.080016] ata6: PATA max UDMA/100 cmd 0x170 ctl 0x376 bmdma 0x1888 irq 15
[    4.080382] ata6: port disabled. ignoring.
[    4.080950] Fixed MDIO Bus: probed
[    4.081089] PPP generic driver version 2.4.2
[    4.081315] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    4.081944] ehci_hcd 0000:00:1d.7: power state changed by ACPI to D0
[    4.082078] ehci_hcd 0000:00:1d.7: PCI INT D -> GSI 19 (level, low) -> IRQ 19
[    4.082213] ehci_hcd 0000:00:1d.7: setting latency timer to 64
[    4.082217] ehci_hcd 0000:00:1d.7: EHCI Host Controller
[    4.082395] ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 1
[    4.086454] ehci_hcd 0000:00:1d.7: debug port 1
[    4.086580] ehci_hcd 0000:00:1d.7: cache line size of 32 is not supported
[    4.086629] ehci_hcd 0000:00:1d.7: irq 19, io mem 0xee404000
[    4.100027] ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00
[    4.100233] usb usb1: configuration #1 chosen from 1 choice
[    4.100387] hub 1-0:1.0: USB hub found
[    4.100513] hub 1-0:1.0: 8 ports detected
[    4.100716] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    4.100857] uhci_hcd: USB Universal Host Controller Interface driver
[    4.101608] uhci_hcd 0000:00:1d.0: power state changed by ACPI to D0
[    4.101736] uhci_hcd 0000:00:1d.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    4.101867] uhci_hcd 0000:00:1d.0: setting latency timer to 64
[    4.101871] uhci_hcd 0000:00:1d.0: UHCI Host Controller
[    4.102030] uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 2
[    4.102234] uhci_hcd 0000:00:1d.0: irq 16, io base 0x00001800
[    4.102450] usb usb2: configuration #1 chosen from 1 choice
[    4.102600] hub 2-0:1.0: USB hub found
[    4.102725] hub 2-0:1.0: 2 ports detected
[    4.102901] uhci_hcd 0000:00:1d.1: PCI INT B -> GSI 17 (level, low) -> IRQ 17
[    4.103032] uhci_hcd 0000:00:1d.1: setting latency timer to 64
[    4.103036] uhci_hcd 0000:00:1d.1: UHCI Host Controller
[    4.103194] uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 3
[    4.103393] uhci_hcd 0000:00:1d.1: irq 17, io base 0x00001820
[    4.103605] usb usb3: configuration #1 chosen from 1 choice
[    4.103759] hub 3-0:1.0: USB hub found
[    4.103883] hub 3-0:1.0: 2 ports detected
[    4.104512] uhci_hcd 0000:00:1d.2: power state changed by ACPI to D0
[    4.104642] uhci_hcd 0000:00:1d.2: PCI INT C -> GSI 18 (level, low) -> IRQ 18
[    4.104772] uhci_hcd 0000:00:1d.2: setting latency timer to 64
[    4.104776] uhci_hcd 0000:00:1d.2: UHCI Host Controller
[    4.104934] uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 4
[    4.105148] uhci_hcd 0000:00:1d.2: irq 18, io base 0x00001840
[    4.105363] usb usb4: configuration #1 chosen from 1 choice
[    4.105515] hub 4-0:1.0: USB hub found
[    4.105640] hub 4-0:1.0: 2 ports detected
[    4.105815] uhci_hcd 0000:00:1d.3: PCI INT D -> GSI 19 (level, low) -> IRQ 19
[    4.105946] uhci_hcd 0000:00:1d.3: setting latency timer to 64
[    4.105949] uhci_hcd 0000:00:1d.3: UHCI Host Controller
[    4.106107] uhci_hcd 0000:00:1d.3: new USB bus registered, assigned bus number 5
[    4.106300] uhci_hcd 0000:00:1d.3: irq 19, io base 0x00001860
[    4.106515] usb usb5: configuration #1 chosen from 1 choice
[    4.106668] hub 5-0:1.0: USB hub found
[    4.106792] hub 5-0:1.0: 2 ports detected
[    4.107029] PNP: PS/2 Controller [PNP0303:KBD,PNP0f13:MOU] at 0x60,0x64 irq 1,12
[    4.107182] Platform driver 'i8042' needs updating - please use dev_pm_ops
[    4.115608] serio: i8042 KBD port at 0x60,0x64 irq 1
[    4.115733] serio: i8042 AUX port at 0x60,0x64 irq 12
[    4.115955] mice: PS/2 mouse device common for all mice
[    4.116213] rtc_cmos 00:07: RTC can wake from S4
[    4.116372] rtc_cmos 00:07: rtc core: registered rtc_cmos as rtc0
[    4.116557] rtc0: alarms up to one month, y3k, 114 bytes nvram, hpet irqs
[    4.116734] device-mapper: uevent: version 1.0.3
[    4.116917] device-mapper: ioctl: 4.15.0-ioctl (2009-04-01) initialised: [email protected]
[    4.117179] device-mapper: multipath: version 1.1.0 loaded
[    4.117307] device-mapper: multipath round-robin: version 1.0.0 loaded
[    4.117536] EISA: Probing bus 0 at eisa.0
[    4.117661] Cannot allocate resource for EISA slot 1
[    4.117783] Cannot allocate resource for EISA slot 2
[    4.117915] Cannot allocate resource for EISA slot 3
[    4.118036] Cannot allocate resource for EISA slot 4
[    4.118158] Cannot allocate resource for EISA slot 5
[    4.118279] Cannot allocate resource for EISA slot 6
[    4.118408] Cannot allocate resource for EISA slot 7
[    4.118530] Cannot allocate resource for EISA slot 8
[    4.118651] EISA: Detected 0 cards.
[    4.118975] cpuidle: using governor ladder
[    4.119246] cpuidle: using governor menu
[    4.119865] TCP cubic registered
[    4.120031] NET: Registered protocol family 10
[    4.120666] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input4
[    4.120677] lo: Disabled Privacy Extensions
[    4.121132] NET: Registered protocol family 17
[    4.121271] Bluetooth: L2CAP ver 2.13
[    4.121389] Bluetooth: L2CAP socket layer initialized
[    4.121512] Bluetooth: SCO (Voice Link) ver 0.6
[    4.121632] Bluetooth: SCO socket layer initialized
[    4.121793] Bluetooth: RFCOMM socket layer initialized
[    4.121931] Bluetooth: RFCOMM TTY layer initialized
[    4.122052] Bluetooth: RFCOMM ver 1.11
[    4.122915] Using IPI No-Shortcut mode
[    4.123098] PM: Resume from disk failed.
[    4.123116] registered taskstats version 1
[    4.123363]   Magic number: 1:319:202
[    4.125428] rtc_cmos 00:07: setting system clock to 2009-07-30 23:09:16 UTC (1248995356)
[    4.125566] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
[    4.125690] EDD information not available.
[    4.244468] ata5.00: ATAPI: HL-DT-ST DVDRAM GSA-4083N, 1.08, max UDMA/33
[    4.260366] ata5.00: configured for UDMA/33
[    4.396075] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[    4.397600] ata1.00: ACPI cmd ef/02:00:00:00:00:a0 succeeded
[    4.397604] ata1.00: ACPI cmd f5/00:00:00:00:00:a0 filtered out
[    4.397979] ata1.00: ACPI cmd ef/5f:00:00:00:00:a0 succeeded
[    4.397983] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 filtered out
[    4.399225] ata1.00: ATA-7: HTS721010G9SA00, MCZIC10V, max UDMA/100
[    4.399351] ata1.00: 195371568 sectors, multi 16: LBA48
[    4.401105] ata1.00: ACPI cmd ef/02:00:00:00:00:a0 succeeded
[    4.401108] ata1.00: ACPI cmd f5/00:00:00:00:00:a0 filtered out
[    4.401484] ata1.00: ACPI cmd ef/5f:00:00:00:00:a0 succeeded
[    4.401487] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 filtered out
[    4.402740] ata1.00: configured for UDMA/100
[    4.412075] usb 1-6: new high speed USB device using ehci_hcd and address 2
[    4.418573] ata1.00: configured for UDMA/100
[    4.418696] ata1: EH complete
[    4.418948] scsi 0:0:0:0: Direct-Access     ATA      HTS721010G9SA00 
 MCZI PQ: 0 ANSI: 5
[    4.419225] sd 0:0:0:0: Attached scsi generic sg0 type 0
[    4.419274] sd 0:0:0:0: [sda] 195371568 512-byte logical blocks: (100 GB/93.1 GiB)
[    4.419331] sd 0:0:0:0: [sda] Write Protect is off
[    4.419334] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    4.419364] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[    4.419524]  sda:
[    4.423553] scsi 4:0:0:0: CD-ROM            HL-DT-ST DVDRAM GSA-4083N 1.08 PQ: 0 ANSI: 5
[    4.427007] sr0: scsi3-mmc drive: 24x/24x writer dvd-ram cd/rw xa/form2 cdda tray
[    4.427145] Uniform CD-ROM driver Revision: 3.20
[    4.427353] sr 4:0:0:0: Attached scsi CD-ROM sr0
[    4.427400] sr 4:0:0:0: Attached scsi generic sg1 type 5
[    4.500039] Clocksource tsc unstable (delta = -172051710 ns)
[    4.544503] usb 1-6: configuration #1 chosen from 1 choice
[    4.544729] hub 1-6:1.0: USB hub found
[    4.544951] hub 1-6:1.0: 7 ports detected
[    4.749126]  sda1 sda2 sda3 sda4
[    4.764539] sd 0:0:0:0: [sda] Attached SCSI disk
[    4.764702] Freeing unused kernel memory: 552k freed
[    4.765205] Write protecting the kernel text: 4552k
[    4.765389] Write protecting the kernel read-only data: 1776k
[    4.766458] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[    4.766596] in_atomic(): 1, irqs_disabled(): 0, pid: 103, name: init
[    4.766723] Pid: 103, comm: init Not tainted 2.6.31-rc4-rt1-dvh01 #1
[    4.766848] Call Trace:
[    4.766973]  [<c012d881>] __might_sleep+0xe1/0x100
[    4.767099]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[    4.767224]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[    4.767350]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[    4.767477]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[    4.767604]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[    4.767728]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[    4.767852]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[    4.767977]  [<c037d634>] ? get_random_int+0xb4/0xe0
[    4.768114]  [<c0140481>] mmput+0x51/0xc0
[    4.768237]  [<c01ef651>] flush_old_exec+0x381/0x6c0
[    4.768361]  [<c01ea0c6>] ? vfs_read+0x126/0x190
[    4.768484]  [<c01eea3f>] ? kernel_read+0x3f/0x60
[    4.768609]  [<c02228cb>] load_elf_binary+0x33b/0x18c0
[    4.768734]  [<c012f06f>] ? __wake_up+0x3f/0x50
[    4.768859]  [<c01ccfee>] ? kunmap_high+0x7e/0xb0
[    4.768983]  [<c01ccede>] ? page_address+0x8e/0x90
[    4.769125]  [<c01cd15b>] ? kmap_high+0x13b/0x4c0
[    4.769248]  [<c01d1752>] ? __get_user_pages+0x112/0x3d0
[    4.769374]  [<c012f06f>] ? __wake_up+0x3f/0x50
[    4.769498]  [<c056cd9a>] ? __rt_spin_lock+0x2a/0x70
[    4.769623]  [<c0222590>] ? load_elf_binary+0x0/0x18c0
[    4.769747]  [<c01eedbd>] search_binary_handler+0xfd/0x300
[    4.769872]  [<c01f0568>] do_execve+0x228/0x300
[    4.769996]  [<c0319626>] ? strncpy_from_user+0x46/0x70
[    4.770121]  [<c0101b16>] sys_execve+0x36/0x60
[    4.770244]  [<c0103025>] syscall_call+0x7/0xb
[    4.820201] usb 1-6.1: new high speed USB device using ehci_hcd and address 3
[    4.914790] usb 1-6.1: configuration #1 chosen from 1 choice
[    5.004207] usb 1-6.7: new full speed USB device using ehci_hcd and address 4
[    5.095913] usb 1-6.7: configuration #1 chosen from 1 choice
[    5.096341] hub 1-6.7:1.0: USB hub found
[    5.096806] hub 1-6.7:1.0: 4 ports detected
[    5.372342] usb 1-6.7.3: new low speed USB device using ehci_hcd and address 5
[    5.478548] usb 1-6.7.3: configuration #1 chosen from 1 choice
[    5.677319] usb 1-6.7.4: new low speed USB device using ehci_hcd and address 6
[    5.778048] usb 1-6.7.4: configuration #1 chosen from 1 choice
[    5.778265] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[    5.778403] in_atomic(): 1, irqs_disabled(): 0, pid: 217, name: udevd
[    5.778544] Pid: 217, comm: udevd Not tainted 2.6.31-rc4-rt1-dvh01 #1
[    5.778670] Call Trace:
[    5.778795]  [<c012d881>] __might_sleep+0xe1/0x100
[    5.778921]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[    5.779046]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[    5.779172]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[    5.779299]  [<c01e6f7f>] mem_cgroup_uncharge_cache_page+0xf/0x20
[    5.779426]  [<c01b87e3>] remove_from_page_cache+0x33/0x40
[    5.779552]  [<c01c1589>] truncate_complete_page+0x39/0x70
[    5.779677]  [<c01c1a82>] truncate_inode_pages_range+0xc2/0x330
[    5.779803]  [<c01cfd66>] ? unmap_mapping_range+0xd6/0x250
[    5.779929]  [<c047ca1e>] ? sock_recvmsg+0x10e/0x130
[    5.780072]  [<c01c1d0f>] truncate_inode_pages+0x1f/0x30
[    5.780197]  [<c01d00bf>] vmtruncate+0xdf/0x170
[    5.780320]  [<c01fe3dd>] inode_setattr+0x6d/0x1a0
[    5.780445]  [<c01c8669>] shmem_notify_change+0x69/0x120
[    5.780570]  [<c01fe651>] notify_change+0x141/0x330
[    5.780694]  [<c056c83d>] ? rt_mutex_lock+0x1d/0x50
[    5.780819]  [<c01e8cac>] do_truncate+0x6c/0x90
[    5.780944]  [<c01f46bd>] may_open+0x1cd/0x280
[    5.781084]  [<c01f490f>] do_filp_open+0x19f/0x820
[    5.781209]  [<c01e8128>] do_sys_open+0x58/0x120
[    5.781333]  [<c01e825e>] sys_open+0x2e/0x40
[    5.781456]  [<c0103025>] syscall_call+0x7/0xb
[    6.848637] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[    6.848778] in_atomic(): 1, irqs_disabled(): 0, pid: 822, name: sleep
[    6.848905] Pid: 822, comm: sleep Not tainted 2.6.31-rc4-rt1-dvh01 #1
[    6.849047] Call Trace:
[    6.849171]  [<c012d881>] __might_sleep+0xe1/0x100
[    6.849296]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[    6.849421]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[    6.849546]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[    6.849672]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[    6.849797]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[    6.849920]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[    6.850043]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[    6.850167]  [<c0140481>] mmput+0x51/0xc0
[    6.850289]  [<c0146465>] exit_mm+0x105/0x140
[    6.850411]  [<c01465b5>] do_exit+0x115/0x760
[    6.850534]  [<c0146cc4>] sys_exit+0x14/0x20
[    6.850656]  [<c0103025>] syscall_call+0x7/0xb
[    7.854489] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[    7.854626] in_atomic(): 1, irqs_disabled(): 0, pid: 832, name: sleep
[    7.854752] Pid: 832, comm: sleep Not tainted 2.6.31-rc4-rt1-dvh01 #1
[    7.854878] Call Trace:
[    7.854997]  [<c012d881>] __might_sleep+0xe1/0x100
[    7.855121]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[    7.855244]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[    7.855368]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[    7.855494]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[    7.855619]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[    7.855741]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[    7.855865]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[    7.855988]  [<c0140481>] mmput+0x51/0xc0
[    7.856119]  [<c0146465>] exit_mm+0x105/0x140
[    7.856241]  [<c01465b5>] do_exit+0x115/0x760
[    7.856363]  [<c0146cc4>] sys_exit+0x14/0x20
[    7.856485]  [<c0103025>] syscall_call+0x7/0xb
[    8.860301] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[    8.860438] in_atomic(): 1, irqs_disabled(): 0, pid: 842, name: sleep
[    8.860564] Pid: 842, comm: sleep Not tainted 2.6.31-rc4-rt1-dvh01 #1
[    8.860689] Call Trace:
[    8.860809]  [<c012d881>] __might_sleep+0xe1/0x100
[    8.860932]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[    8.861088]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[    8.861212]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[    8.861338]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[    8.861463]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[    8.861586]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[    8.861710]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[    8.861833]  [<c0140481>] mmput+0x51/0xc0
[    8.861955]  [<c0146465>] exit_mm+0x105/0x140
[    8.862078]  [<c01465b5>] do_exit+0x115/0x760
[    8.862200]  [<c0146cc4>] sys_exit+0x14/0x20
[    8.862322]  [<c0103025>] syscall_call+0x7/0xb
[    9.866131] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[    9.867960] in_atomic(): 1, irqs_disabled(): 0, pid: 852, name: sleep
[    9.868102] Pid: 852, comm: sleep Not tainted 2.6.31-rc4-rt1-dvh01 #1
[    9.868227] Call Trace:
[    9.868346]  [<c012d881>] __might_sleep+0xe1/0x100
[    9.868469]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[    9.868592]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[    9.868716]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[    9.868842]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[    9.868966]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[    9.869105]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[    9.869229]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[    9.869352]  [<c0140481>] mmput+0x51/0xc0
[    9.869474]  [<c0146465>] exit_mm+0x105/0x140
[    9.869597]  [<c01465b5>] do_exit+0x115/0x760
[    9.869719]  [<c0146cc4>] sys_exit+0x14/0x20
[    9.869841]  [<c0103025>] syscall_call+0x7/0xb
[   10.908948] EXT3-fs: mounted filesystem with writeback data mode.
[   10.909108] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   10.909244] in_atomic(): 1, irqs_disabled(): 0, pid: 863, name: exe
[   10.909371] Pid: 863, comm: exe Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   10.909496] Call Trace:
[   10.909616]  [<c012d881>] __might_sleep+0xe1/0x100
[   10.909740]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   10.909863]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   10.909987]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   10.910113]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   10.910237]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   10.910360]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   10.910484]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[   10.910607]  [<c0140481>] mmput+0x51/0xc0
[   10.910729]  [<c0146465>] exit_mm+0x105/0x140
[   10.910852]  [<c01465b5>] do_exit+0x115/0x760
[   10.910973]  [<c01e208c>] ? kmem_cache_free+0x7c/0x120
[   10.911097]  [<c016df6d>] ? rt_up_read+0xd/0x10
[   10.911221]  [<c01be309>] ? __free_pages+0x29/0x30
[   10.911344]  [<c0146c36>] do_group_exit+0x36/0x90
[   10.911467]  [<c0146ca4>] sys_exit_group+0x14/0x20
[   10.911590]  [<c0103025>] syscall_call+0x7/0xb
[   10.911737] kjournald starting.  Commit interval 5 seconds
[   11.909928] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   11.910069] in_atomic(): 1, irqs_disabled(): 0, pid: 893, name: rc
[   11.910195] Pid: 893, comm: rc Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   11.910320] Call Trace:
[   11.910444]  [<c012d881>] __might_sleep+0xe1/0x100
[   11.910569]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   11.910694]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   11.910818]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   11.910944]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   11.911069]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   11.911191]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   11.911315]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[   11.911439]  [<c037d634>] ? get_random_int+0xb4/0xe0
[   11.911564]  [<c0140481>] mmput+0x51/0xc0
[   11.911686]  [<c01ef651>] flush_old_exec+0x381/0x6c0
[   11.911810]  [<c01ea0c6>] ? vfs_read+0x126/0x190
[   11.911933]  [<c01eea3f>] ? kernel_read+0x3f/0x60
[   11.912082]  [<c02228cb>] load_elf_binary+0x33b/0x18c0
[   11.912206]  [<c012f06f>] ? __wake_up+0x3f/0x50
[   11.912330]  [<c01ccfee>] ? kunmap_high+0x7e/0xb0
[   11.912453]  [<c01ccede>] ? page_address+0x8e/0x90
[   11.912576]  [<c01cd15b>] ? kmap_high+0x13b/0x4c0
[   11.912699]  [<c01d1752>] ? __get_user_pages+0x112/0x3d0
[   11.912825]  [<c012f06f>] ? __wake_up+0x3f/0x50
[   11.912948]  [<c056cd9a>] ? __rt_spin_lock+0x2a/0x70
[   11.913090]  [<c0222590>] ? load_elf_binary+0x0/0x18c0
[   11.913213]  [<c01eedbd>] search_binary_handler+0xfd/0x300
[   11.913338]  [<c01f0568>] do_execve+0x228/0x300
[   11.913462]  [<c0319626>] ? strncpy_from_user+0x46/0x70
[   11.913586]  [<c0101b16>] sys_execve+0x36/0x60
[   11.913708]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   13.923619] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   13.923769] in_atomic(): 1, irqs_disabled(): 0, pid: 933, name: readahead-list
[   13.923904] Pid: 933, comm: readahead-list Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   13.924057] Call Trace:
[   13.924180]  [<c012d881>] __might_sleep+0xe1/0x100
[   13.924306]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   13.924431]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   13.924557]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   13.924682]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   13.924808]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   13.924930]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   13.925079]  [<c01d478d>] unmap_region+0xad/0x180
[   13.925204]  [<c02004ab>] ? mntput_no_expire+0x1b/0xa0
[   13.925328]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   13.925450]  [<c01d4d42>] sys_munmap+0x42/0x60
[   13.925574]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   17.255052] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   17.255197] in_atomic(): 1, irqs_disabled(): 0, pid: 933, name: readahead-list
[   17.255334] Pid: 933, comm: readahead-list Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   17.255469] Call Trace:
[   17.255594]  [<c012d881>] __might_sleep+0xe1/0x100
[   17.255719]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   17.255845]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   17.255970]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   17.256123]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   17.256249]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   17.256372]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   17.256496]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[   17.256621]  [<c0140481>] mmput+0x51/0xc0
[   17.256745]  [<c0146465>] exit_mm+0x105/0x140
[   17.256869]  [<c01465b5>] do_exit+0x115/0x760
[   17.256992]  [<c016df6d>] ? rt_up_read+0xd/0x10
[   17.257149]  [<c01e7fdc>] ? filp_close+0x4c/0x80
[   17.257271]  [<c0146c36>] do_group_exit+0x36/0x90
[   17.257394]  [<c0146ca4>] sys_exit_group+0x14/0x20
[   17.257516]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   17.649188] udev: starting version 141
[   17.811554] Linux agpgart interface v0.103
[   18.161949] Non-volatile memory driver v1.3
[   18.214316] e1000e: Intel(R) PRO/1000 Network Driver - 1.0.2-k2
[   18.214449] e1000e: Copyright (c) 1999-2008 Intel Corporation.
[   18.214694] e1000e 0000:02:00.0: Disabling L1 ASPM
[   18.214896] e1000e 0000:02:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[   18.215033] e1000e 0000:02:00.0: setting latency timer to 64
[   18.215228] e1000e 0000:02:00.0: irq 30 for MSI/MSI-X
[   18.252914] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   18.253086] in_atomic(): 1, irqs_disabled(): 0, pid: 1458, name: udevd
[   18.253217] Pid: 1458, comm: udevd Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   18.253342] Call Trace:
[   18.253465]  [<c012d881>] __might_sleep+0xe1/0x100
[   18.253590]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   18.253715]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   18.253840]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   18.253966]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   18.254092]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   18.254214]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   18.254337]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[   18.254462]  [<c0140481>] mmput+0x51/0xc0
[   18.254583]  [<c0146465>] exit_mm+0x105/0x140
[   18.254705]  [<c01465b5>] do_exit+0x115/0x760
[   18.254828]  [<c016df6d>] ? rt_up_read+0xd/0x10
[   18.254951]  [<c0146c36>] do_group_exit+0x36/0x90
[   18.255074]  [<c0146ca4>] sys_exit_group+0x14/0x20
[   18.255196]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   18.270476] e1000e 0000:02:00.0: Warning: detected ASPM enabled in EEPROM
[   18.316454] input: PC Speaker as /devices/platform/pcspkr/input/input5
[   18.328998] 0000:02:00.0: eth0: (PCI Express:2.5GB/s:Width x1) 00:15:58:2a:18:74
[   18.329161] 0000:02:00.0: eth0: Intel(R) PRO/1000 Network Connection
[   18.329365] 0000:02:00.0: eth0: MAC: 2, PHY: 2, PBA No: 005301-003
[   18.370242] intel_rng: FWH not detected
[   18.401762] Initializing USB Mass Storage driver...
[   18.494659] scsi6 : SCSI emulation for USB Mass Storage devices
[   18.521265] usbcore: registered new interface driver usb-storage
[   18.521397] USB Mass Storage support registered.
[   18.522557] usb-storage: device found at 3
[   18.522560] usb-storage: waiting for device to settle before scanning
[   18.579860] usbcore: registered new interface driver hiddev
[   18.587789] input: Lite-On Tech IBM USB Keyboard with UltraNav as /devices/pci0000:00/0000:00:1d.7/usb1/1-6/1-6.7/1-6.7.3/1-6.7.3:1.0/input/input6
[   18.588264] generic-usb 0003:04B3:3018.0001: input,hidraw0: USB HID v1.10 Keyboard [Lite-On Tech IBM USB Keyboard with UltraNav] on usb-0000:00:1d.7-6.7.3/input0
[   18.594654] input: Lite-On Tech IBM USB Keyboard with UltraNav as /devices/pci0000:00/0000:00:1d.7/usb1/1-6/1-6.7/1-6.7.3/1-6.7.3:1.1/input/input7
[   18.594888] generic-usb 0003:04B3:3018.0002: input,hidraw1: USB HID v1.10 Device [Lite-On Tech IBM USB Keyboard with UltraNav] on usb-0000:00:1d.7-6.7.3/input1
[   18.597578] input: Synaptics Inc. Composite TouchPad / TrackPoint as /devices/pci0000:00/0000:00:1d.7/usb1/1-6/1-6.7/1-6.7.4/1-6.7.4:1.0/input/input8
[   18.597824] generic-usb 0003:06CB:0009.0003: input,hidraw2: USB HID v1.00 Mouse [Synaptics Inc. Composite TouchPad / TrackPoint] on usb-0000:00:1d.7-6.7.4/input0
[   18.602219] input: Synaptics Inc. Composite TouchPad / TrackPoint as /devices/pci0000:00/0000:00:1d.7/usb1/1-6/1-6.7/1-6.7.4/1-6.7.4:1.1/input/input9
[   18.604150] generic-usb 0003:06CB:0009.0004: input,hidraw3: USB HID v1.00 Mouse [Synaptics Inc. Composite TouchPad / TrackPoint] on usb-0000:00:1d.7-6.7.4/input1
[   18.604338] usbcore: registered new interface driver usbhid
[   18.604465] usbhid: v2.6:USB HID core driver
[   18.652515] acpi device:08: registered as cooling_device2
[   18.652860] input: Video Bus as /devices/LNXSYSTM:00/device:00/PNP0A08:00/device:06/device:07/input/input10
[   18.653438] ACPI: Video Device [VID1] (multi-head: yes  rom: no post: no)
[   19.227728] parport_pc 00:0b: reported by Plug and Play ACPI
[   19.227916] parport0: PC-style at 0x3bc, irq 7 [PCSPP,TRISTATE]
[   19.293347] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   19.293492] in_atomic(): 1, irqs_disabled(): 0, pid: 1000, name: udevd
[   19.293618] Pid: 1000, comm: udevd Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   19.293744] Call Trace:
[   19.293868]  [<c012d881>] __might_sleep+0xe1/0x100
[   19.293993]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   19.294118]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   19.294244]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   19.294370]  [<c01e6f7f>] mem_cgroup_uncharge_cache_page+0xf/0x20
[   19.294497]  [<c01b87e3>] remove_from_page_cache+0x33/0x40
[   19.294622]  [<c01c1589>] truncate_complete_page+0x39/0x70
[   19.294745]  [<c01c1a82>] truncate_inode_pages_range+0xc2/0x330
[   19.294871]  [<c01cfd66>] ? unmap_mapping_range+0xd6/0x250
[   19.294996]  [<c047ca1e>] ? sock_recvmsg+0x10e/0x130
[   19.295119]  [<c01c1d0f>] truncate_inode_pages+0x1f/0x30
[   19.295243]  [<c01d00bf>] vmtruncate+0xdf/0x170
[   19.295366]  [<c01fe3dd>] inode_setattr+0x6d/0x1a0
[   19.295489]  [<c01c8669>] shmem_notify_change+0x69/0x120
[   19.295613]  [<c01fe651>] notify_change+0x141/0x330
[   19.295737]  [<c056c83d>] ? rt_mutex_lock+0x1d/0x50
[   19.295860]  [<c01e8cac>] do_truncate+0x6c/0x90
[   19.295984]  [<c01f46bd>] may_open+0x1cd/0x280
[   19.296117]  [<c01f490f>] do_filp_open+0x19f/0x820
[   19.296243]  [<c01e8128>] do_sys_open+0x58/0x120
[   19.296365]  [<c01e825e>] sys_open+0x2e/0x40
[   19.296487]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   19.384283] irda_init()
[   19.384299] NET: Registered protocol family 23
[   19.413167] iTCO_vendor_support: vendor-support=0
[   19.466930] ppdev: user-space parallel port driver
[   19.481438] psmouse serio1: ID: 10 00 64
[   19.557917] yenta_cardbus 0000:15:00.0: CardBus bridge found [17aa:2012]
[   19.558072] yenta_cardbus 0000:15:00.0: Using INTVAL to route CSC interrupts to PCI
[   19.558208] yenta_cardbus 0000:15:00.0: Routing CardBus interrupts to PCI
[   19.558339] yenta_cardbus 0000:15:00.0: TI: mfunc 0x01d01002, devctl 0x64
[   19.583912] Platform driver 'thinkpad_acpi' needs updating - please use dev_pm_ops
[   19.584530] thinkpad_acpi: ThinkPad ACPI Extras v0.23
[   19.584653] thinkpad_acpi: http://ibm-acpi.sf.net/
[   19.584775] thinkpad_acpi: ThinkPad BIOS 79ETE2WW (2.22 ), EC 79HT50WW-1.07
[   19.584902] thinkpad_acpi: Lenovo ThinkPad T60p, model 2007AD1
[   19.586059] thinkpad_acpi: radio switch found; radios are disabled
[   19.586288] thinkpad_acpi: This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver
[   19.586432] thinkpad_acpi: Disabling thinkpad-acpi brightness events by default...
[   19.596994] Registered led device: tpacpi::thinklight
[   19.597177] Registered led device: tpacpi::power
[   19.597316] Registered led device: tpacpi::standby
[   19.597454] Registered led device: tpacpi::thinkvantage
[   19.600479] thinkpad_acpi: Standard ACPI backlight interface available, not loading native one.
[   19.600939] input: ThinkPad Extra Buttons as /devices/virtual/input/input11
[   19.624824] Platform driver 'nsc-ircc' needs updating - please use dev_pm_ops
[   19.625848] nsc-ircc 00:0c: activated
[   19.625971] nsc_ircc_pnp_probe() : From PnP, found firbase 0x2F8 ; irq 3 ; dma 1.
[   19.626012] nsc-ircc, chip->init
[   19.626146] nsc-ircc, Found chip at base=0x164e
[   19.626307] nsc-ircc, driver loaded (Dag Brattli)
[   19.627222] IrDA: Registered device irda0
[   19.627344] nsc-ircc, Using dongle: IBM31T1100 or Temic TFDS6000/TFDS6500
[   19.627517] nsc-ircc, chip->init
[   19.627658] nsc-ircc, Found chip at base=0x02e
[   19.627819] nsc-ircc, driver loaded (Dag Brattli)
[   19.627943] nsc_ircc_open(), can't get iobase of 0x2f8
[   19.628228] nsc-ircc, chip->init
[   19.646285] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.05
[   19.646512] iTCO_wdt: Found a ICH7-M or ICH7-U TCO device (Version=2, TCOBASE=0x1060)
[   19.646715] iTCO_wdt: initialized. heartbeat=30 sec (nowayout=0)
[   19.687827] ip_tables: (C) 2000-2006 Netfilter Core Team
[   19.788860] yenta_cardbus 0000:15:00.0: ISA IRQ mask 0x0c70, PCI irq 16
[   19.788997] yenta_cardbus 0000:15:00.0: Socket status: 30000007
[   19.789139] yenta_cardbus 0000:15:00.0: pcmcia: parent PCI bridge I/O window: 0xa000 - 0xdfff
[   19.789277] pcmcia_socket pcmcia_socket0: cs: IO port probe 0xa000-0xdfff: clean.
[   19.792271] yenta_cardbus 0000:15:00.0: pcmcia: parent PCI bridge Memory window: 0xe4300000 - 0xe7ffffff
[   19.792411] yenta_cardbus 0000:15:00.0: pcmcia: parent PCI bridge Memory window: 0xe0000000 - 0xe3ffffff
[   19.802505] IBM TrackPoint firmware: 0x0e, buttons: 3/3
[   19.819365] input: TPPS/2 IBM TrackPoint as /devices/platform/i8042/serio1/input/input12
[   20.011825] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
[   20.012121] CONFIG_NF_CT_ACCT is deprecated and will be removed soon. Please use
[   20.012257] nf_conntrack.acct=1 kernel parameter, acct=1 nf_conntrack module option or
[   20.012393] sysctl net.netfilter.nf_conntrack_acct=1 to enable it.
[   20.273059] pcmcia_socket pcmcia_socket0: cs: IO port probe 0x100-0x3af: clean.
[   20.275526] pcmcia_socket pcmcia_socket0: cs: IO port probe 0x3e0-0x4ff: excluding 0x4d0-0x4d7
[   20.276924] pcmcia_socket pcmcia_socket0: cs: IO port probe 0x820-0x8ff: clean.
[   20.277983] pcmcia_socket pcmcia_socket0: cs: IO port probe 0xc00-0xcf7: clean.
[   20.279203] pcmcia_socket pcmcia_socket0: cs: IO port probe 0xa00-0xaff: clean.
[   20.318940] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   20.319082] in_atomic(): 1, irqs_disabled(): 0, pid: 1985, name: modprobe
[   20.319209] Pid: 1985, comm: modprobe Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   20.319333] Call Trace:
[   20.319456]  [<c012d881>] __might_sleep+0xe1/0x100
[   20.319582]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   20.319706]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   20.319831]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   20.319957]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   20.320101]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   20.320224]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   20.320348]  [<c01d478d>] unmap_region+0xad/0x180
[   20.320471]  [<c01d396d>] ? split_vma+0xed/0x140
[   20.320593]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   20.320715]  [<c01d4d42>] sys_munmap+0x42/0x60
[   20.320839]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   20.588481] HDA Intel 0000:00:1b.0: PCI INT B -> GSI 17 (level, low) -> IRQ 17
[   20.588622] hda_intel: probe_mask set to 0x1 for device 17aa:2010
[   20.589773] HDA Intel 0000:00:1b.0: setting latency timer to 64
[   21.195404] lp0: using parport0 (interrupt-driven).
[   21.271450] padlock: VIA PadLock not detected.
[   21.348123] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   21.348272] in_atomic(): 1, irqs_disabled(): 0, pid: 2252, name: modprobe
[   21.348398] Pid: 2252, comm: modprobe Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   21.348524] Call Trace:
[   21.348647]  [<c012d881>] __might_sleep+0xe1/0x100
[   21.348772]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   21.348896]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   21.349024]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   21.349163]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   21.349288]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   21.349411]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   21.349534]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[   21.349658]  [<c0140481>] mmput+0x51/0xc0
[   21.349781]  [<c0146465>] exit_mm+0x105/0x140
[   21.349903]  [<c01465b5>] do_exit+0x115/0x760
[   21.350025]  [<c01eb59e>] ? fput+0x1e/0x30
[   21.350146]  [<c01e7fdc>] ? filp_close+0x4c/0x80
[   21.350270]  [<c0146c36>] do_group_exit+0x36/0x90
[   21.350392]  [<c0146ca4>] sys_exit_group+0x14/0x20
[   21.350515]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   21.818195] EXT3 FS on sda1, internal journal
[   23.520281] usb-storage: device scan complete
[   23.522980] scsi 6:0:0:0: Direct-Access     HTS72101 0G9SA00 
 0000 PQ: 0 ANSI: 0
[   23.523369] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   23.523372] in_atomic(): 1, irqs_disabled(): 0, pid: 1000, name: udevd
[   23.523377] Pid: 1000, comm: udevd Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   23.523379] Call Trace:
[   23.523388]  [<c012d881>] __might_sleep+0xe1/0x100
[   23.523395]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   23.523401]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   23.523406]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   23.523410]  [<c01e6f7f>] mem_cgroup_uncharge_cache_page+0xf/0x20
[   23.523415]  [<c01b87e3>] remove_from_page_cache+0x33/0x40
[   23.523420]  [<c01c1589>] truncate_complete_page+0x39/0x70
[   23.523423]  [<c01c1a82>] truncate_inode_pages_range+0xc2/0x330
[   23.523427]  [<c01cfd66>] ? unmap_mapping_range+0xd6/0x250
[   23.523430] sd 6:0:0:0: Attached scsi generic sg2 type 0
[   23.523437]  [<c01c1d0f>] truncate_inode_pages+0x1f/0x30
[   23.523443]  [<c01d00bf>] vmtruncate+0xdf/0x170
[   23.523448]  [<c01fe3dd>] inode_setattr+0x6d/0x1a0
[   23.523452]  [<c01c8669>] shmem_notify_change+0x69/0x120
[   23.523456]  [<c01fe651>] notify_change+0x141/0x330
[   23.523461]  [<c056c83d>] ? rt_mutex_lock+0x1d/0x50
[   23.523465]  [<c01e8cac>] do_truncate+0x6c/0x90
[   23.523470]  [<c01f46bd>] may_open+0x1cd/0x280
[   23.523474]  [<c01f490f>] do_filp_open+0x19f/0x820
[   23.523479]  [<c01e8128>] do_sys_open+0x58/0x120
[   23.523483]  [<c01e825e>] sys_open+0x2e/0x40
[   23.523487]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   23.524950] sd 6:0:0:0: [sdb] 195371568 512-byte logical blocks: (100 GB/93.1 GiB)
[   23.528197] sd 6:0:0:0: [sdb] Write Protect is off
[   23.528201] sd 6:0:0:0: [sdb] Mode Sense: 27 00 00 00
[   23.528204] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[   23.532209] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[   23.532215]  sdb: sdb1 sdb2 sdb3 sdb4
[   25.955213] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   25.955216] in_atomic(): 1, irqs_disabled(): 0, pid: 2482, name: async/0
[   25.955221] Pid: 2482, comm: async/0 Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   25.955223] Call Trace:
[   25.955232]  [<c012d881>] __might_sleep+0xe1/0x100
[   25.955237]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   25.955242]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   25.955247]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   25.955251]  [<c01e6f7f>] mem_cgroup_uncharge_cache_page+0xf/0x20
[   25.955255]  [<c01b87e3>] remove_from_page_cache+0x33/0x40
[   25.955260]  [<c01c1589>] truncate_complete_page+0x39/0x70
[   25.955263]  [<c01c1a82>] truncate_inode_pages_range+0xc2/0x330
[   25.955268]  [<c016e7f9>] ? smp_call_function_many+0xa9/0x1c0
[   25.955273]  [<c020ba27>] ? invalidate_bh_lru+0x57/0x80
[   25.955277]  [<c01c1d0f>] truncate_inode_pages+0x1f/0x30
[   25.955281]  [<c0210942>] kill_bdev+0x32/0x40
[   25.955284]  [<c0211c81>] __blkdev_put+0x111/0x140
[   25.955288]  [<c0211cbf>] blkdev_put+0xf/0x20
[   25.955292]  [<c0235e61>] register_disk+0x121/0x130
[   25.955297]  [<c0308ec4>] ? blk_register_region+0x34/0x40
[   25.955301]  [<c0308910>] ? exact_match+0x0/0x10
[   25.955304]  [<c030918f>] add_disk+0x9f/0x120
[   25.955307]  [<c0308910>] ? exact_match+0x0/0x10
[   25.955311]  [<c0309480>] ? exact_lock+0x0/0x20
[   25.955316]  [<c03c411e>] sd_probe_async+0xde/0x1d0
[   25.955320]  [<c056ccba>] ? rt_spin_lock+0x2a/0x70
[   25.955324]  [<c01619f3>] async_thread+0xe3/0x240
[   25.955328]  [<c056c2d0>] ? rt_spin_lock_slowunlock+0x60/0x70
[   25.955333]  [<c013e120>] ? default_wake_function+0x0/0x20
[   25.955336]  [<c0161910>] ? async_thread+0x0/0x240
[   25.955340]  [<c015a76a>] kthread+0x7a/0x90
[   25.955343]  [<c015a6f0>] ? kthread+0x0/0x90
[   25.955347]  [<c0103ac7>] kernel_thread_helper+0x7/0x10
[   25.959324] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[   25.959329] sd 6:0:0:0: [sdb] Attached SCSI disk
[   28.158392] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   28.160263] in_atomic(): 1, irqs_disabled(): 0, pid: 2474, name: askpass
[   28.160389] Pid: 2474, comm: askpass Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   28.160514] Call Trace:
[   28.160639]  [<c012d881>] __might_sleep+0xe1/0x100
[   28.160764]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   28.160889]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   28.161031]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   28.161157]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   28.161283]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   28.161405]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   28.161529]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[   28.161652]  [<c0140481>] mmput+0x51/0xc0
[   28.161775]  [<c0146465>] exit_mm+0x105/0x140
[   28.161898]  [<c01465b5>] do_exit+0x115/0x760
[   28.162020]  [<c02cc06c>] ? cap_syslog+0x1c/0x30
[   28.162143]  [<c02cd351>] ? security_syslog+0x11/0x20
[   28.162266]  [<c016df6d>] ? rt_up_read+0xd/0x10
[   28.162391]  [<c0380410>] ? redirected_tty_write+0x0/0x90
[   28.162515]  [<c0146c36>] do_group_exit+0x36/0x90
[   28.162638]  [<c0146ca4>] sys_exit_group+0x14/0x20
[   28.162762]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   28.695618] padlock: VIA PadLock Hash Engine not detected.
[   29.240310] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   29.240455] in_atomic(): 1, irqs_disabled(): 0, pid: 2475, name: cryptsetup
[   29.240583] Pid: 2475, comm: cryptsetup Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   29.240708] Call Trace:
[   29.240833]  [<c012d881>] __might_sleep+0xe1/0x100
[   29.240958]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   29.241109]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   29.241234]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   29.241360]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   29.241486]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   29.241608]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   29.241733]  [<c01d478d>] unmap_region+0xad/0x180
[   29.241857]  [<c01d396d>] ? split_vma+0xed/0x140
[   29.241979]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   29.242102]  [<c01d4d42>] sys_munmap+0x42/0x60
[   29.242225]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   33.214321] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   33.214465] in_atomic(): 1, irqs_disabled(): 0, pid: 1000, name: udevd
[   33.214592] Pid: 1000, comm: udevd Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   33.214717] Call Trace:
[   33.214841]  [<c012d881>] __might_sleep+0xe1/0x100
[   33.214966]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   33.215091]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   33.215217]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   33.215342]  [<c01e6f7f>] mem_cgroup_uncharge_cache_page+0xf/0x20
[   33.215469]  [<c01b87e3>] remove_from_page_cache+0x33/0x40
[   33.215594]  [<c01c1589>] truncate_complete_page+0x39/0x70
[   33.215718]  [<c01c1a82>] truncate_inode_pages_range+0xc2/0x330
[   33.215843]  [<c01cfd66>] ? unmap_mapping_range+0xd6/0x250
[   33.215969]  [<c013561c>] ? update_curr+0xec/0x160
[   33.216114]  [<c01c1d0f>] truncate_inode_pages+0x1f/0x30
[   33.216237]  [<c01d00bf>] vmtruncate+0xdf/0x170
[   33.216361]  [<c01fe3dd>] inode_setattr+0x6d/0x1a0
[   33.216485]  [<c01c8669>] shmem_notify_change+0x69/0x120
[   33.216609]  [<c01fe651>] notify_change+0x141/0x330
[   33.216731]  [<c056c83d>] ? rt_mutex_lock+0x1d/0x50
[   33.216854]  [<c01e8cac>] do_truncate+0x6c/0x90
[   33.216979]  [<c01f46bd>] may_open+0x1cd/0x280
[   33.217123]  [<c01f490f>] do_filp_open+0x19f/0x820
[   33.217249]  [<c01e8128>] do_sys_open+0x58/0x120
[   33.217372]  [<c01e825e>] sys_open+0x2e/0x40
[   33.217494]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   33.804372] kjournald starting.  Commit interval 5 seconds
[   33.804516] EXT3-fs warning: maximal mount count reached, running e2fsck is recommended
[   33.808265] EXT3 FS on dm-0, internal journal
[   33.808493] EXT3-fs: mounted filesystem with writeback data mode.
[   33.942267] Adding 2096472k swap on /dev/mapper/swap.  Priority:-1 extents:1 across:2096472k
[   34.212034] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   34.212179] in_atomic(): 1, irqs_disabled(): 0, pid: 2862, name: pidof
[   34.212305] Pid: 2862, comm: pidof Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   34.212430] Call Trace:
[   34.212555]  [<c012d881>] __might_sleep+0xe1/0x100
[   34.212680]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   34.212804]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   34.212930]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   34.213081]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   34.213216]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   34.213339]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   34.213463]  [<c01d478d>] unmap_region+0xad/0x180
[   34.213586]  [<c01d396d>] ? split_vma+0xed/0x140
[   34.213709]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   34.213831]  [<c01d4d42>] sys_munmap+0x42/0x60
[   34.213954]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   35.212130] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   35.212270] in_atomic(): 1, irqs_disabled(): 0, pid: 3089, name: tput
[   35.212397] Pid: 3089, comm: tput Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   35.212521] Call Trace:
[   35.212934]  [<c012d881>] __might_sleep+0xe1/0x100
[   35.213091]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   35.213216]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   35.213342]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   35.213468]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   35.213594]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   35.213717]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   35.213840]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[   35.213966]  [<c0140481>] mmput+0x51/0xc0
[   35.214088]  [<c0146465>] exit_mm+0x105/0x140
[   35.214210]  [<c01465b5>] do_exit+0x115/0x760
[   35.214333]  [<c016df6d>] ? rt_up_read+0xd/0x10
[   35.214458]  [<c037b380>] ? write_null+0x0/0x10
[   35.214581]  [<c0146c36>] do_group_exit+0x36/0x90
[   35.214704]  [<c0146ca4>] sys_exit_group+0x14/0x20
[   35.214827]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   36.224649] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   36.224799] in_atomic(): 1, irqs_disabled(): 0, pid: 3183, name: dbus-daemon
[   36.224925] Pid: 3183, comm: dbus-daemon Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   36.225067] Call Trace:
[   36.225191]  [<c012d881>] __might_sleep+0xe1/0x100
[   36.225317]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   36.225441]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   36.225567]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   36.225693]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   36.225819]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   36.225942]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   36.226066]  [<c01d478d>] unmap_region+0xad/0x180
[   36.226189]  [<c01d396d>] ? split_vma+0xed/0x140
[   36.226312]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   36.226435]  [<c01d4d42>] sys_munmap+0x42/0x60
[   36.226558]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   37.230733] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   37.230877] in_atomic(): 1, irqs_disabled(): 0, pid: 3192, name: lsb_release
[   37.231005] Pid: 3192, comm: lsb_release Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   37.231131] Call Trace:
[   37.231256]  [<c012d881>] __might_sleep+0xe1/0x100
[   37.231381]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   37.231506]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   37.231631]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   37.231757]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   37.231882]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   37.232005]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   37.232141]  [<c01d478d>] unmap_region+0xad/0x180
[   37.232265]  [<c01d396d>] ? split_vma+0xed/0x140
[   37.232387]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   37.232510]  [<c01d4d42>] sys_munmap+0x42/0x60
[   37.232632]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   38.237451] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   38.239281] in_atomic(): 1, irqs_disabled(): 0, pid: 3333, name: automount
[   38.239409] Pid: 3333, comm: automount Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   38.239535] Call Trace:
[   38.239659]  [<c012d881>] __might_sleep+0xe1/0x100
[   38.239785]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   38.239909]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   38.240039]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   38.240178]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   38.240303]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   38.240425]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   38.240548]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[   38.240672]  [<c037d634>] ? get_random_int+0xb4/0xe0
[   38.240798]  [<c0140481>] mmput+0x51/0xc0
[   38.240920]  [<c01ef651>] flush_old_exec+0x381/0x6c0
[   38.241063]  [<c01ea0c6>] ? vfs_read+0x126/0x190
[   38.241186]  [<c01eea3f>] ? kernel_read+0x3f/0x60
[   38.241310]  [<c02228cb>] load_elf_binary+0x33b/0x18c0
[   38.241434]  [<c012f06f>] ? __wake_up+0x3f/0x50
[   38.241557]  [<c01b7b0d>] ? unlock_page+0x1d/0x20
[   38.241680]  [<c01d042a>] ? __do_fault+0x29a/0x490
[   38.241803]  [<c01d0f5b>] ? handle_mm_fault+0x15b/0x840
[   38.241929]  [<c01ccede>] ? page_address+0x8e/0x90
[   38.242053]  [<c01d1752>] ? __get_user_pages+0x112/0x3d0
[   38.242177]  [<c016df6d>] ? rt_up_read+0xd/0x10
[   38.242300]  [<c056f694>] ? do_page_fault+0x344/0x450
[   38.242424]  [<c056d346>] ? error_code+0x66/0x70
[   38.242546]  [<c012f06f>] ? __wake_up+0x3f/0x50
[   38.242669]  [<c056cd9a>] ? __rt_spin_lock+0x2a/0x70
[   38.242793]  [<c0222590>] ? load_elf_binary+0x0/0x18c0
[   38.242916]  [<c01eedbd>] search_binary_handler+0xfd/0x300
[   38.243041]  [<c01f0568>] do_execve+0x228/0x300
[   38.243164]  [<c0101b16>] sys_execve+0x36/0x60
[   38.243286]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   38.658188] tun: Universal TUN/TAP device driver, 1.6
[   38.658340] tun: (C) 1999-2004 Max Krasnyansky <[email protected]>
[   39.251816] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   39.251962] in_atomic(): 1, irqs_disabled(): 0, pid: 3402, name: rpmq
[   39.252122] Pid: 3402, comm: rpmq Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   39.252247] Call Trace:
[   39.252371]  [<c012d881>] __might_sleep+0xe1/0x100
[   39.252497]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   39.252623]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   39.252749]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   39.252875]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   39.253017]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   39.253140]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   39.253264]  [<c01d478d>] unmap_region+0xad/0x180
[   39.253387]  [<c01d396d>] ? split_vma+0xed/0x140
[   39.253510]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   39.253633]  [<c01d4d42>] sys_munmap+0x42/0x60
[   39.253756]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   40.370681] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   40.370831] in_atomic(): 1, irqs_disabled(): 0, pid: 3446, name: find
[   40.370958] Pid: 3446, comm: find Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   40.371083] Call Trace:
[   40.371207]  [<c012d881>] __might_sleep+0xe1/0x100
[   40.371332]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   40.371457]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   40.371582]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   40.371708]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   40.371834]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   40.371957]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   40.372081]  [<c01d478d>] unmap_region+0xad/0x180
[   40.372205]  [<c01d396d>] ? split_vma+0xed/0x140
[   40.372327]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   40.372450]  [<c01d4d42>] sys_munmap+0x42/0x60
[   40.372572]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   41.369588] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   41.369739] in_atomic(): 1, irqs_disabled(): 0, pid: 3574, name: sed
[   41.369865] Pid: 3574, comm: sed Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   41.369990] Call Trace:
[   41.370113]  [<c012d881>] __might_sleep+0xe1/0x100
[   41.370239]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   41.370363]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   41.370489]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   41.370614]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   41.370740]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   41.370863]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   41.370986]  [<c01d478d>] unmap_region+0xad/0x180
[   41.371109]  [<c01d396d>] ? split_vma+0xed/0x140
[   41.371231]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   41.371354]  [<c01d4d42>] sys_munmap+0x42/0x60
[   41.371477]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   42.427007] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   42.427148] in_atomic(): 1, irqs_disabled(): 0, pid: 3595, name: cc1
[   42.427275] Pid: 3595, comm: cc1 Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   42.427399] Call Trace:
[   42.427523]  [<c012d881>] __might_sleep+0xe1/0x100
[   42.427650]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   42.427776]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   42.427902]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   42.428031]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   42.428162]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   42.428284]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   42.428408]  [<c01d478d>] unmap_region+0xad/0x180
[   42.428531]  [<c01d39a0>] ? split_vma+0x120/0x140
[   42.428654]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   42.428777]  [<c01d4d42>] sys_munmap+0x42/0x60
[   42.428899]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   43.425724] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   43.425871] in_atomic(): 1, irqs_disabled(): 0, pid: 3727, name: as
[   43.425998] Pid: 3727, comm: as Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   43.426123] Call Trace:
[   43.426249]  [<c012d881>] __might_sleep+0xe1/0x100
[   43.426374]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   43.426499]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   43.426626]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   43.426752]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   43.426878]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   43.427001]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   43.427125]  [<c01d478d>] unmap_region+0xad/0x180
[   43.427249]  [<c01d39a0>] ? split_vma+0x120/0x140
[   43.427372]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   43.427494]  [<c01d4d42>] sys_munmap+0x42/0x60
[   43.427617]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   44.585982] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   44.586124] in_atomic(): 1, irqs_disabled(): 0, pid: 3587, name: sleep
[   44.586252] Pid: 3587, comm: sleep Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   44.586376] Call Trace:
[   44.586501]  [<c012d881>] __might_sleep+0xe1/0x100
[   44.586627]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   44.586752]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   44.586877]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   44.587004]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   44.587129]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   44.587252]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   44.587376]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[   44.587500]  [<c0140481>] mmput+0x51/0xc0
[   44.587622]  [<c0146465>] exit_mm+0x105/0x140
[   44.587744]  [<c01465b5>] do_exit+0x115/0x760
[   44.587867]  [<c01e7fdc>] ? filp_close+0x4c/0x80
[   44.587989]  [<c0146c36>] do_group_exit+0x36/0x90
[   44.588122]  [<c0146ca4>] sys_exit_group+0x14/0x20
[   44.588245]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   46.551088] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   46.551230] in_atomic(): 1, irqs_disabled(): 0, pid: 3738, name: as
[   46.551357] Pid: 3738, comm: as Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   46.551481] Call Trace:
[   46.551605]  [<c012d881>] __might_sleep+0xe1/0x100
[   46.551731]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   46.551855]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   46.551980]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   46.552122]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   46.552247]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   46.552370]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   46.552493]  [<c01d478d>] unmap_region+0xad/0x180
[   46.552617]  [<c01d39a0>] ? split_vma+0x120/0x140
[   46.552740]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   46.552862]  [<c01d4d42>] sys_munmap+0x42/0x60
[   46.552984]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   47.589864] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   47.590009] in_atomic(): 1, irqs_disabled(): 0, pid: 3740, name: sleep
[   47.590135] Pid: 3740, comm: sleep Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   47.590260] Call Trace:
[   47.590383]  [<c012d881>] __might_sleep+0xe1/0x100
[   47.590508]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   47.590632]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   47.590758]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   47.590883]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   47.591008]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   47.591130]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   47.591254]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[   47.591379]  [<c0140481>] mmput+0x51/0xc0
[   47.591500]  [<c0146465>] exit_mm+0x105/0x140
[   47.591622]  [<c01465b5>] do_exit+0x115/0x760
[   47.593468]  [<c01e7fdc>] ? filp_close+0x4c/0x80
[   47.593591]  [<c0146c36>] do_group_exit+0x36/0x90
[   47.593714]  [<c0146ca4>] sys_exit_group+0x14/0x20
[   47.593837]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   50.025219] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   50.025361] in_atomic(): 1, irqs_disabled(): 0, pid: 3741, name: sleep
[   50.025487] Pid: 3741, comm: sleep Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   50.025612] Call Trace:
[   50.025734]  [<c012d881>] __might_sleep+0xe1/0x100
[   50.025859]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   50.025983]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   50.026108]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   50.026234]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   50.026359]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   50.026481]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   50.026605]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[   50.026729]  [<c0140481>] mmput+0x51/0xc0
[   50.026850]  [<c0146465>] exit_mm+0x105/0x140
[   50.026972]  [<c01465b5>] do_exit+0x115/0x760
[   50.027095]  [<c01e7fdc>] ? filp_close+0x4c/0x80
[   50.027219]  [<c0146c36>] do_group_exit+0x36/0x90
[   50.027341]  [<c0146ca4>] sys_exit_group+0x14/0x20
[   50.027463]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   51.073549] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   51.073701] in_atomic(): 1, irqs_disabled(): 0, pid: 3903, name: cp
[   51.073827] Pid: 3903, comm: cp Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   51.073951] Call Trace:
[   51.074076]  [<c012d881>] __might_sleep+0xe1/0x100
[   51.074202]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   51.074326]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   51.074452]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   51.074578]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   51.074704]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   51.074827]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   51.074951]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[   51.075075]  [<c0140481>] mmput+0x51/0xc0
[   51.075197]  [<c0146465>] exit_mm+0x105/0x140
[   51.075319]  [<c01465b5>] do_exit+0x115/0x760
[   51.075441]  [<c016df6d>] ? rt_up_read+0xd/0x10
[   51.075564]  [<c01e7fdc>] ? filp_close+0x4c/0x80
[   51.075687]  [<c0146c36>] do_group_exit+0x36/0x90
[   51.075811]  [<c0146ca4>] sys_exit_group+0x14/0x20
[   51.075934]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   53.561232] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   53.561381] in_atomic(): 1, irqs_disabled(): 0, pid: 3854, name: sleep
[   53.561508] Pid: 3854, comm: sleep Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   53.561633] Call Trace:
[   53.561757]  [<c012d881>] __might_sleep+0xe1/0x100
[   53.561882]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   53.562006]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   53.562132]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   53.562258]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   53.562382]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   53.562505]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   53.562628]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[   53.562752]  [<c0140481>] mmput+0x51/0xc0
[   53.562874]  [<c0146465>] exit_mm+0x105/0x140
[   53.562996]  [<c01465b5>] do_exit+0x115/0x760
[   53.563119]  [<c01e7fdc>] ? filp_close+0x4c/0x80
[   53.563242]  [<c0146c36>] do_group_exit+0x36/0x90
[   53.563366]  [<c0146ca4>] sys_exit_group+0x14/0x20
[   53.563488]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   54.563486] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   54.563632] in_atomic(): 1, irqs_disabled(): 0, pid: 4160, name: ld
[   54.563757] Pid: 4160, comm: ld Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   54.563881] Call Trace:
[   54.564031]  [<c012d881>] __might_sleep+0xe1/0x100
[   54.564157]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   54.564282]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   54.564408]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   54.564534]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   54.564659]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   54.564782]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   54.564906]  [<c01d478d>] unmap_region+0xad/0x180
[   54.565033]  [<c01d39a0>] ? split_vma+0x120/0x140
[   54.565170]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   54.565292]  [<c01d4d42>] sys_munmap+0x42/0x60
[   54.565415]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   55.570470] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   55.570615] in_atomic(): 1, irqs_disabled(): 0, pid: 4177, name: cc1
[   55.570742] Pid: 4177, comm: cc1 Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   55.570867] Call Trace:
[   55.570992]  [<c012d881>] __might_sleep+0xe1/0x100
[   55.571117]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   55.571240]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   55.571366]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   55.571492]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   55.571618]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   55.571740]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   55.571864]  [<c01d478d>] unmap_region+0xad/0x180
[   55.571986]  [<c01d39a0>] ? split_vma+0x120/0x140
[   55.572129]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   55.572251]  [<c01d4e4d>] sys_brk+0xed/0x100
[   55.572373]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   56.894109] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   56.894254] in_atomic(): 1, irqs_disabled(): 0, pid: 4199, name: as
[   56.894380] Pid: 4199, comm: as Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   56.894505] Call Trace:
[   56.894628]  [<c012d881>] __might_sleep+0xe1/0x100
[   56.894757]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   56.894897]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   56.895022]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   56.895148]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   56.895273]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   56.895395]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   56.895520]  [<c01d478d>] unmap_region+0xad/0x180
[   56.895644]  [<c01d39a0>] ? split_vma+0x120/0x140
[   56.895766]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   56.895889]  [<c01d4d42>] sys_munmap+0x42/0x60
[   56.896032]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   57.896512] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   57.896657] in_atomic(): 1, irqs_disabled(): 0, pid: 4213, name: cc1
[   57.896783] Pid: 4213, comm: cc1 Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   57.896908] Call Trace:
[   57.897037]  [<c012d881>] __might_sleep+0xe1/0x100
[   57.897175]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   57.897298]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   57.897423]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   57.897549]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   57.897674]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   57.897797]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   57.897921]  [<c01d478d>] unmap_region+0xad/0x180
[   57.898043]  [<c01d39a0>] ? split_vma+0x120/0x140
[   57.898166]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   57.898289]  [<c01d4e4d>] sys_brk+0xed/0x100
[   57.898411]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   59.355504] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   59.355650] in_atomic(): 1, irqs_disabled(): 0, pid: 4249, name: cc1
[   59.355776] Pid: 4249, comm: cc1 Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   59.355901] Call Trace:
[   59.356054]  [<c012d881>] __might_sleep+0xe1/0x100
[   59.356180]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   59.356304]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   59.356430]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   59.356556]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   59.356682]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   59.356805]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   59.356929]  [<c01d478d>] unmap_region+0xad/0x180
[   59.357073]  [<c01d396d>] ? split_vma+0xed/0x140
[   59.357196]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   59.357319]  [<c01d4d42>] sys_munmap+0x42/0x60
[   59.357441]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   60.471267] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   60.471412] in_atomic(): 1, irqs_disabled(): 0, pid: 4256, name: cc1
[   60.471539] Pid: 4256, comm: cc1 Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   60.471663] Call Trace:
[   60.471788]  [<c012d881>] __might_sleep+0xe1/0x100
[   60.471913]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   60.472062]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   60.472188]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   60.472315]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   60.472441]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   60.472563]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   60.472687]  [<c01d478d>] unmap_region+0xad/0x180
[   60.472811]  [<c01d396d>] ? split_vma+0xed/0x140
[   60.472934]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   60.473082]  [<c01d4d42>] sys_munmap+0x42/0x60
[   60.473209]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   62.068684] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   62.068826] in_atomic(): 1, irqs_disabled(): 0, pid: 4274, name: cc1
[   62.068953] Pid: 4274, comm: cc1 Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   62.069097] Call Trace:
[   62.069220]  [<c012d881>] __might_sleep+0xe1/0x100
[   62.069346]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   62.069470]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   62.069596]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   62.069722]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   62.069848]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   62.071625]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   62.071748]  [<c01d478d>] unmap_region+0xad/0x180
[   62.071872]  [<c01d39a0>] ? split_vma+0x120/0x140
[   62.072013]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   62.072136]  [<c01d4d42>] sys_munmap+0x42/0x60
[   62.072259]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   63.104279] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   63.104421] in_atomic(): 1, irqs_disabled(): 0, pid: 4252, name: sleep
[   63.104547] Pid: 4252, comm: sleep Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   63.104673] Call Trace:
[   63.104797]  [<c012d881>] __might_sleep+0xe1/0x100
[   63.104922]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   63.105051]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   63.105191]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   63.105317]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   63.105442]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   63.105565]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   63.105689]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[   63.105813]  [<c0140481>] mmput+0x51/0xc0
[   63.105935]  [<c0146465>] exit_mm+0x105/0x140
[   63.106057]  [<c01465b5>] do_exit+0x115/0x760
[   63.106179]  [<c01e7fdc>] ? filp_close+0x4c/0x80
[   63.106302]  [<c0146c36>] do_group_exit+0x36/0x90
[   63.106425]  [<c0146ca4>] sys_exit_group+0x14/0x20
[   63.106547]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   64.721425] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   64.721571] in_atomic(): 1, irqs_disabled(): 0, pid: 4299, name: as
[   64.721698] Pid: 4299, comm: as Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   64.721823] Call Trace:
[   64.721948]  [<c012d881>] __might_sleep+0xe1/0x100
[   64.722073]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   64.722199]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   64.722324]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   64.722450]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   64.722576]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   64.722700]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   64.722824]  [<c01d478d>] unmap_region+0xad/0x180
[   64.722948]  [<c01d39a0>] ? split_vma+0x120/0x140
[   64.723071]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   64.723194]  [<c01d4d42>] sys_munmap+0x42/0x60
[   64.723317]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   65.935403] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   65.935549] in_atomic(): 1, irqs_disabled(): 0, pid: 4322, name: cc1
[   65.935677] Pid: 4322, comm: cc1 Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   65.935802] Call Trace:
[   65.935928]  [<c012d881>] __might_sleep+0xe1/0x100
[   65.936077]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   65.936203]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   65.936329]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   65.936455]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   65.936581]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   65.936705]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   65.936829]  [<c01d478d>] unmap_region+0xad/0x180
[   65.936954]  [<c01d39a0>] ? split_vma+0x120/0x140
[   65.937103]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   65.937226]  [<c01d4d42>] sys_munmap+0x42/0x60
[   65.937349]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   67.053599] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   67.053726] in_atomic(): 1, irqs_disabled(): 0, pid: 4367, name: cc1
[   67.053845] Pid: 4367, comm: cc1 Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   67.053991] Call Trace:
[   67.054114]  [<c012d881>] __might_sleep+0xe1/0x100
[   67.054121]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   67.054126]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   67.054131]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   67.054135]  [<c01e6f7f>] mem_cgroup_uncharge_cache_page+0xf/0x20
[   67.054139]  [<c01b87e3>] remove_from_page_cache+0x33/0x40
[   67.054143]  [<c01c1589>] truncate_complete_page+0x39/0x70
[   67.054147]  [<c01c1a82>] truncate_inode_pages_range+0xc2/0x330
[   67.054150]  [<c01cfd66>] ? unmap_mapping_range+0xd6/0x250
[   67.054154]  [<c01c1d0f>] truncate_inode_pages+0x1f/0x30
[   67.054157]  [<c01d00bf>] vmtruncate+0xdf/0x170
[   67.054162]  [<c01fe3dd>] inode_setattr+0x6d/0x1a0
[   67.054168]  [<c024561f>] ext3_setattr+0xcf/0x1d0
[   67.054171]  [<c01fe651>] notify_change+0x141/0x330
[   67.054175]  [<c056c83d>] ? rt_mutex_lock+0x1d/0x50
[   67.054179]  [<c01e8cac>] do_truncate+0x6c/0x90
[   67.054184]  [<c01f46bd>] may_open+0x1cd/0x280
[   67.054188]  [<c01f490f>] do_filp_open+0x19f/0x820
[   67.054192]  [<c0136464>] ? finish_task_switch+0x64/0x110
[   67.054196]  [<c01e8128>] do_sys_open+0x58/0x120
[   67.054200]  [<c01e825e>] sys_open+0x2e/0x40
[   67.054204]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   68.368098] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   68.368244] in_atomic(): 1, irqs_disabled(): 0, pid: 4405, name: as
[   68.368370] Pid: 4405, comm: as Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   68.368495] Call Trace:
[   68.368619]  [<c012d881>] __might_sleep+0xe1/0x100
[   68.368744]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   68.368868]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   68.368993]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   68.369155]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   68.369280]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   68.369402]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   68.369526]  [<c01d478d>] unmap_region+0xad/0x180
[   68.369650]  [<c01d39a0>] ? split_vma+0x120/0x140
[   68.369773]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   68.369896]  [<c01d4d42>] sys_munmap+0x42/0x60
[   68.370018]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   69.427951] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   69.428117] in_atomic(): 1, irqs_disabled(): 0, pid: 4449, name: as
[   69.428244] Pid: 4449, comm: as Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   69.428368] Call Trace:
[   69.428491]  [<c012d881>] __might_sleep+0xe1/0x100
[   69.428616]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   69.428741]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   69.428867]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   69.428993]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   69.429138]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   69.429261]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   69.429385]  [<c01d478d>] unmap_region+0xad/0x180
[   69.429509]  [<c01d39a0>] ? split_vma+0x120/0x140
[   69.429631]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   69.429754]  [<c01d4d42>] sys_munmap+0x42/0x60
[   69.429876]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   70.433386] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   70.433531] in_atomic(): 1, irqs_disabled(): 0, pid: 4482, name: as
[   70.433657] Pid: 4482, comm: as Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   70.433782] Call Trace:
[   70.433906]  [<c012d881>] __might_sleep+0xe1/0x100
[   70.434031]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   70.434155]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   70.434281]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   70.434406]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   70.434532]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   70.434654]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   70.434778]  [<c01d478d>] unmap_region+0xad/0x180
[   70.434901]  [<c01d39a0>] ? split_vma+0x120/0x140
[   70.435024]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   70.435147]  [<c01d4d42>] sys_munmap+0x42/0x60
[   70.435269]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   71.572121] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   71.572265] in_atomic(): 1, irqs_disabled(): 0, pid: 4415, name: sleep
[   71.572393] Pid: 4415, comm: sleep Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   71.572518] Call Trace:
[   71.572643]  [<c012d881>] __might_sleep+0xe1/0x100
[   71.572768]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   71.572893]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   71.573021]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   71.573160]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   71.573285]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   71.573408]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   71.573532]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[   71.573656]  [<c0140481>] mmput+0x51/0xc0
[   71.573778]  [<c0146465>] exit_mm+0x105/0x140
[   71.573901]  [<c01465b5>] do_exit+0x115/0x760
[   71.574023]  [<c01e7fdc>] ? filp_close+0x4c/0x80
[   71.574146]  [<c0146c36>] do_group_exit+0x36/0x90
[   71.574269]  [<c0146ca4>] sys_exit_group+0x14/0x20
[   71.574392]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   72.774641] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   72.774787] in_atomic(): 1, irqs_disabled(): 0, pid: 4570, name: as
[   72.774913] Pid: 4570, comm: as Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   72.775038] Call Trace:
[   72.775162]  [<c012d881>] __might_sleep+0xe1/0x100
[   72.775287]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   72.775410]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   72.775535]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   72.775661]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   72.775786]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   72.775909]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   72.776054]  [<c01d478d>] unmap_region+0xad/0x180
[   72.776178]  [<c01d39a0>] ? split_vma+0x120/0x140
[   72.776301]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   72.776425]  [<c01d4d42>] sys_munmap+0x42/0x60
[   72.776547]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   74.030400] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   74.030539] in_atomic(): 1, irqs_disabled(): 0, pid: 3044, name: login
[   74.030666] Pid: 3044, comm: login Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   74.030791] Call Trace:
[   74.030915]  [<c012d881>] __might_sleep+0xe1/0x100
[   74.031040]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   74.031165]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   74.031291]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   74.031417]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   74.031543]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   74.031666]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   74.031789]  [<c01d478d>] unmap_region+0xad/0x180
[   74.031913]  [<c01d396d>] ? split_vma+0xed/0x140
[   74.032040]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   74.032172]  [<c01d4d42>] sys_munmap+0x42/0x60
[   74.032295]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   75.112281] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   75.112425] in_atomic(): 1, irqs_disabled(): 0, pid: 4552, name: sleep
[   75.112552] Pid: 4552, comm: sleep Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   75.112679] Call Trace:
[   75.112819]  [<c012d881>] __might_sleep+0xe1/0x100
[   75.112945]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   75.113103]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   75.113229]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   75.113356]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   75.113481]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   75.113603]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   75.113726]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[   75.113869]  [<c0140481>] mmput+0x51/0xc0
[   75.113991]  [<c0146465>] exit_mm+0x105/0x140
[   75.114113]  [<c01465b5>] do_exit+0x115/0x760
[   75.114235]  [<c01e7fdc>] ? filp_close+0x4c/0x80
[   75.114358]  [<c0146c36>] do_group_exit+0x36/0x90
[   75.114481]  [<c0146ca4>] sys_exit_group+0x14/0x20
[   75.114605]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   76.209214] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   76.209356] in_atomic(): 1, irqs_disabled(): 0, pid: 4869, name: git
[   76.209482] Pid: 4869, comm: git Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   76.209607] Call Trace:
[   76.209732]  [<c012d881>] __might_sleep+0xe1/0x100
[   76.209857]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   76.209981]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   76.210107]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   76.210233]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   76.210359]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   76.210481]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   76.210605]  [<c01d478d>] unmap_region+0xad/0x180
[   76.210727]  [<c01d396d>] ? split_vma+0xed/0x140
[   76.210850]  [<c01d4a10>] do_munmap+0x1b0/0x250
[   76.210973]  [<c01d4d42>] sys_munmap+0x42/0x60
[   76.211095]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   77.577425] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   77.577564] in_atomic(): 1, irqs_disabled(): 0, pid: 4654, name: sleep
[   77.577691] Pid: 4654, comm: sleep Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   77.577816] Call Trace:
[   77.577940]  [<c012d881>] __might_sleep+0xe1/0x100
[   77.578065]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   77.578189]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   77.578314]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   77.578440]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   77.578565]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   77.578688]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   77.578811]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[   77.578935]  [<c0140481>] mmput+0x51/0xc0
[   77.579057]  [<c0146465>] exit_mm+0x105/0x140
[   77.579179]  [<c01465b5>] do_exit+0x115/0x760
[   77.579302]  [<c01e7fdc>] ? filp_close+0x4c/0x80
[   77.579425]  [<c0146c36>] do_group_exit+0x36/0x90
[   77.579548]  [<c0146ca4>] sys_exit_group+0x14/0x20
[   77.579671]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   80.581241] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   80.581386] in_atomic(): 1, irqs_disabled(): 0, pid: 4881, name: sleep
[   80.581512] Pid: 4881, comm: sleep Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   80.581637] Call Trace:
[   80.581761]  [<c012d881>] __might_sleep+0xe1/0x100
[   80.581886]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   80.583670]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   80.583795]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   80.583921]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   80.584079]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   80.584202]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   80.584326]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[   80.584451]  [<c0140481>] mmput+0x51/0xc0
[   80.584573]  [<c0146465>] exit_mm+0x105/0x140
[   80.584695]  [<c01465b5>] do_exit+0x115/0x760
[   80.584817]  [<c01e7fdc>] ? filp_close+0x4c/0x80
[   80.584941]  [<c0146c36>] do_group_exit+0x36/0x90
[   80.585095]  [<c0146ca4>] sys_exit_group+0x14/0x20
[   80.585218]  [<c0102f4c>] sysenter_do_call+0x12/0x28
[   82.475617] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[   82.475760] in_atomic(): 1, irqs_disabled(): 0, pid: 4943, name: bash
[   82.475886] Pid: 4943, comm: bash Not tainted 2.6.31-rc4-rt1-dvh01 #1
[   82.476012] Call Trace:
[   82.476150]  [<c012d881>] __might_sleep+0xe1/0x100
[   82.476275]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[   82.476400]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[   82.476524]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[   82.476650]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[   82.476776]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[   82.476899]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[   82.477036]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[   82.477160]  [<c037d634>] ? get_random_int+0xb4/0xe0
[   82.477285]  [<c0140481>] mmput+0x51/0xc0
[   82.477408]  [<c01ef651>] flush_old_exec+0x381/0x6c0
[   82.477531]  [<c01ea0c6>] ? vfs_read+0x126/0x190
[   82.477653]  [<c01eea3f>] ? kernel_read+0x3f/0x60
[   82.477777]  [<c02228cb>] load_elf_binary+0x33b/0x18c0
[   82.477902]  [<c012f06f>] ? __wake_up+0x3f/0x50
[   82.478026]  [<c01ccfee>] ? kunmap_high+0x7e/0xb0
[   82.478149]  [<c01ccede>] ? page_address+0x8e/0x90
[   82.478272]  [<c01cd15b>] ? kmap_high+0x13b/0x4c0
[   82.478396]  [<c01d1752>] ? __get_user_pages+0x112/0x3d0
[   82.478521]  [<c012f06f>] ? __wake_up+0x3f/0x50
[   82.478644]  [<c056cd9a>] ? __rt_spin_lock+0x2a/0x70
[   82.478768]  [<c0222590>] ? load_elf_binary+0x0/0x18c0
[   82.478891]  [<c01eedbd>] search_binary_handler+0xfd/0x300
[   82.479015]  [<c01f0568>] do_execve+0x228/0x300
[   82.479138]  [<c0319626>] ? strncpy_from_user+0x46/0x70
[   82.479261]  [<c0101b16>] sys_execve+0x36/0x60
[   82.479383]  [<c0102f4c>] sysenter_do_call+0x12/0x28

Darren Hart
IBM Linux Technology Center
Real-Time Linux Team

Ok, here's a traceback I got running 2.6.31-rc4-rt1 on a Lenovo T60 that had been running for a while:

BUG: scheduling while atomic: gkrellm/0x00000001/2483, CPU#0
Modules linked in: ati_remote pl2303 usbserial fuse i915 drm i2c_algo_bit sunrpc ipv6 cpufreq_ondemand acpi_cpufreq freq_table loop dm_multipath scsi_dh kvm_intel kvm uinput arc4 ecb iwl3945 btusb iwlcore snd_hda_codec_analog bluetooth snd_hda_intel snd_hda_codec snd_hwdep mac80211 snd_pcm thinkpad_acpi snd_timer hwmon snd cfg80211 soundcore video rfkill iTCO_wdt iTCO_vendor_support sr_mod joydev cdrom ata_generic yenta_socket snd_page_alloc pcspkr i2c_i801 i2c_core output e1000e ata_piix rsrc_nonstatic sg ahci libata sd_mod scsi_mod dm_snapshot dm_zero dm_mirror dm_region_hash dm_log dm_mod uhci_hcd ohci_hcd ssb [last unloaded: microcode]
Pid: 2483, comm: gkrellm Not tainted 2.6.31-rc4-rt1 #31
Call Trace:
 [<ffffffff8105742b>] __schedule_bug+0x97/0x9c
 [<ffffffff8153856b>] __schedule+0xc7/0x112c
 [<ffffffff8153c8c6>] ? _atomic_spin_unlock+0x46/0x62
 [<ffffffff81539ad5>] schedule+0x1f/0x70
 [<ffffffff8153b163>] rt_spin_lock_slowlock+0x313/0x475
 [<ffffffff8153c1ed>] rt_spin_lock+0xd4/0xd9
 [<ffffffff810c5d6b>] res_counter_uncharge+0x2e/0x53
 [<ffffffff8115b1f5>] __mem_cgroup_uncharge_common+0x24e/0x376
 [<ffffffff8115b3f7>] mem_cgroup_uncharge_page+0x52/0x54
 [<ffffffff8113e9ca>] page_remove_rmap+0x5a/0x7d
 [<ffffffff8112eb62>] unmap_vmas+0xb0b/0x111b
 [<ffffffff81112ec0>] ? __alloc_pages_nodemask+0x1ea/0xa16
 [<ffffffff81137f16>] unmap_region+0x148/0x294
 [<ffffffff81139940>] do_munmap+0x35d/0x3e5
 [<ffffffff81139a0e>] sys_munmap+0x46/0x5d
 [<ffffffff8100cf72>] system_call_fastpath+0x16/0x1b

Steven seemed to think that we have a mismatched preempt_disable() and preempt_enable() but I haven't had enough coffee to actually try debugging it.

Clark

We (I) can't write to this file :)

However, I'll try to attack the remaining bkl that resides in tty...

Thanks,
Frederic.

I took a look at the perms, then the history - looks like you sorted it out.

Darren Hart
IBM Linux Technology Center
Real-Time Linux Team

Yeah, I just had to register. I'm an idiot.

Thanks!

BUG: scheduling while atomic: kjournald2/0x00000001/1128, CPU#1 
Modules linked in: olympic forcedeth rndis_wlan floppy [last unloaded: scsi_wait_scan]
Pid: 1128, comm: kjournald2 Tainted: G        W  2.6.31-rc4-rt1 #3
Call Trace:
 [<ffffffff81809a2d>] ? __schedule+0x88/0x76c
 [<ffffffff8109baca>] ? task_blocks_on_rt_mutex+0x15b/0x1c4
 [<ffffffff8180a45b>] ? schedule+0x1a/0x3e
 [<ffffffff8180b22e>] ? rt_spin_lock_slowlock+0x149/0x21c
 [<ffffffff810e630d>] ? lock_cpu_pcp+0x4b/0x85
 [<ffffffff810e762b>] ? free_hot_cold_page+0x5a/0x216
 [<ffffffff8110fe0a>] ? slab_irq_enable+0x9d/0xc1
 [<ffffffff81110516>] ? kmem_cache_free+0x42/0xc3
 [<ffffffff811df024>] ? jbd2_journal_remove_journal_head+0x2d/0x54
 [<ffffffff811dbe56>] ? journal_clean_one_cp_list+0x82/0xed
 [<ffffffff811dbf0a>] ? __jbd2_journal_clean_checkpoint_list+0x49/0xa0
 [<ffffffff811d9e1d>] ? jbd2_journal_commit_transaction+0x2f3/0x125a
 [<ffffffff8180a162>] ? thread_return+0x51/0xe4
 [<ffffffff810884bd>] ? autoremove_wake_function+0x0/0x55
 [<ffffffff810797d1>] ? try_to_del_timer_sync+0x59/0x77
 [<ffffffff811e00f2>] ? kjournald2+0x106/0x27c
 [<ffffffff810884bd>] ? autoremove_wake_function+0x0/0x55
 [<ffffffff811dffec>] ? kjournald2+0x0/0x27c
 [<ffffffff8108800e>] ? kthread+0x90/0x98
 [<ffffffff8102cf8a>] ? child_rip+0xa/0x20
 [<ffffffff81087f7e>] ? kthread+0x0/0x98
 [<ffffffff8102cf80>] ? child_rip+0x0/0x20

I'm seeing the following if CONFIG_PREEMPT_RT is disabled:

Freeing unused kernel memory: 636k freed Write protecting the kernel read-only data: 11512k

BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<ffffffff810b330b>] pagevec_move_tail+0x2b/0x140
PGD 0
Oops: 0000 [#1] SMP

last sysfs file:
CPU 1
Pid: 1, comm: init Tainted: G W 2.6.31-rc4-rt1tirq #7 IBM
eServer BladeCenter LS20 -[885065U]-

RIP: 0010:[<ffffffff810b330b>]  [<ffffffff810b330b>]
pagevec_move_tail+0x2b/0x140
RSP: 0018:ffff880111a818a0  EFLAGS: 00010046
RAX: 0000000000000001 RBX: 0000000000000206 RCX: 0000000000000000
RDX: 0000000003b70630 RSI: 0000000000000000 RDI: ffff880028045c60
RBP: ffff880111a818d0 R08: 0000000000000000 R09: ffff88010f4e3d30
R10: 0000000000000002 R11: 00000000ca416065 R12: 0000000000000000
R13: ffff880028045c60 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff880028037000(0000) knlGS:0000000000000000
CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 0000000000000000 CR3: 000000010f44c000 CR4: 00000000000006a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process init (pid: 1, threadinfo ffff880111a80000, task ffff880111a7b770)
Stack:
 ffff88010f44dad8 0000000000000206 0000000000000005 0000000000000001
<0> ffff88010f44dad8 00007fffd7d6a000 ffff880111a81900 ffffffff810b3481
<0> 00000000fffffff4 0000000000001000 00000000fffffff4 00007fffffffe000
Call Trace:
 [<ffffffff810b3481>] lru_add_drain+0x61/0x80
 [<ffffffff810e7547>] setup_arg_pages+0x1b7/0x3b0
 [<ffffffff810ea0d5>] ? inode_permission+0x65/0xb0
 [<ffffffff8133eb9b>] ? get_random_int+0x5b/0x60
 [<ffffffff81122a34>] load_elf_binary+0x4d4/0x1e40
 [<ffffffff810ab276>] ? generic_file_aio_read+0x5e6/0x640
 [<ffffffff810e1b51>] ? do_sync_read+0xf1/0x130
 [<ffffffff812d3d11>] ? strrchr+0x11/0x30
 [<ffffffff81120530>] ? load_misc_binary+0x80/0x3d0
 [<ffffffff810e620f>] search_binary_handler+0x9f/0x1e0
 [<ffffffff8112101e>] load_script+0x1ee/0x240
 [<ffffffff810c2b42>] ? get_user_pages+0x32/0x40
 [<ffffffff810e5ecb>] ? get_arg_page+0x4b/0xb0
 [<ffffffff810e5e79>] ? put_arg_page+0x9/0x10
 [<ffffffff810e620f>] search_binary_handler+0x9f/0x1e0
 [<ffffffff810e7b2e>] do_execve+0x27e/0x340
 [<ffffffff8100a409>] sys_execve+0x49/0x70
 [<ffffffff8100ccb8>] kernel_execve+0x68/0xd0
 [<ffffffff8100918e>] ? run_init_process+0x1e/0x20
 [<ffffffff81009206>] init_post+0x76/0x110
 [<ffffffff81c38ace>] kernel_init+0x22e/0x250
 [<ffffffff8100cc3a>] child_rip+0xa/0x20
 [<ffffffff81c388a0>] ? kernel_init+0x0/0x250
 [<ffffffff8100cc30>] ? child_rip+0x0/0x20
Code: 55 31 c9 48 89 e5 41 57 41 56 41 55 49 89 fd 41 54 53 48 83 ec

08 8b 17 85 d2 0f 84 d3 00 00 00 45 31 ff 45 31 f6 4f 8b 64 f5 10 <49> 8b 04 24 48 89 c2 48 c1 e8 38 83 e0 03 48 c1 ea 3a 48 8d 04 RIP [<ffffffff810b330b>] pagevec_move_tail+0x2b/0x140
RSP <ffff880111a818a0>
CR2: 0000000000000000

---[ end trace 93761b2e97bc6de2 ]---

thanks
-john
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Hi,
I am seeing below kernel panic on 8 way Intel and 4 way AMD blades.

Kernel panic - not syncing: Attempted to kill init!
Pid: 1, comm: init Not tainted 2.6.31-rc4-rt1-autotest #1
Call Trace:
 [<ffffffff8104c887>] panic+0xc1/0x171
 [<ffffffff8104ec9a>] ? put_files_struct+0xc3/0xe6
 [<ffffffff81394313>] ? rt_write_unlock+0x1c/0x32
 [<ffffffff810582fd>] ? exit_ptrace+0xab/0x130
 [<ffffffff81394313>] ? rt_write_unlock+0x1c/0x32
 [<ffffffff810500af>] do_exit+0x88/0x726
 [<ffffffff810507d5>] do_group_exit+0x88/0xbb
 [<ffffffff8105082d>] sys_exit_group+0x25/0x3d
 [<ffffffff8100be2b>] system_call_fastpath+0x16/0x1b

Thanks,
Gowri

Gowri,

Would you post your .config so we can see what options you have enabled?

Clark

Hi Clark,
Thanks for the attention. I just looked at error message before the trace I posted.

setuproot: moving /dev failed: No such file or directory no fstab.sys, mounting internal defaults
setuproot: error mounting /proc: No such file or directory
setuproot: error mounting /sys: No such file or directory Switching to new root and running init. unmounting old /dev
unmounting old /proc
unmounting old /sys
switchroot: mount failed: No such file or directory

Only if I set CONFIG_SYSFS_DEPRECATED_V2=y, I could successfully boot which I have tested with this kernel in same system.

Is it not set by default from 2.6.31 onwards ?

Thanks,
Gowri

I wasn't sure when it would move from 'y' to 'n', but looks like .31 is it. You'll need that option back on for booting on RHEL (since the boot infrastructure uses the old /sys format) but I don't think you'll need it for Fedora. Not sure about SLERT. Bet Greg Haskins would know though :)

Clark

The default 'n' works fine for Fedora 10 and Fedora 11.

You need it Y to boot on SLES 10 / SLERT 10 file systems.

Its ok with 'N' on openSUSE 10.3 or later.

Sven

Thanks Clark! Yes, Fedora 10 (or 11) might have updated mkinitrd as in
https://bugzilla.redhat.com/show_bug.cgi?id=489151 , if I am right!

Regards,
Gowri

I'm unable to do a clean build of this on powerpc64. Related to changes
in the locking code, I'm sure. I've spent some time poking at this,
but it's not something I think I will be able to figure out short-term. Suggestions are welcomed. :-)

I can share my .config if requested, but I suspect the problem will be obvious to someone more familiar with the spinlock changes.

The build error:
/test/willschm/linux-2.6.31-rtx/kernel/spinlock.c: In function ‘_atomic_spin_lock’:
/test/willschm/linux-2.6.31-rtx/kernel/spinlock.c:103: error: implicit declaration of function ‘_raw_atomic_spin_trylock’ /test/willschm/linux-2.6.31-rtx/kernel/spinlock.c:103: error: implicit declaration of function ‘_raw_atomic_spin_relax’

I can't find the definitions for ‘_raw_atomic_spin_trylock’ or ‘_raw_atomic_spin_relax’ with any of my grepping either, for any of the
architectures. I suspect this ties back into the
CONFIG_GENERIC_LOCKBREAK being defined, or not being defined for the architecture. (It's on for Power, not on for x86).

With lots of code trimmed, the relevant code appears to be (in kernel/spinlock.c) :

#if !defined(CONFIG_GENERIC_LOCKBREAK) || defined(CONFIG_DEBUG_LOCK_ALLOC)
	...

#else
BUILD_LOCK_OPS(atomic_spin, atomic_spinlock); /* line 103*/
#fi

As an experiment, I did force the CONFIG_GENERIC_LOCKBREAK option off and built successfully, but my system turns into a doorstop during very early boot, down the find_legacy_serial_ports() path, eventually ending
up stuck in _atomic_spin_lock()->debug_smp_processor_id(). This is
before the early console or xmon itself has gone through setup, so not a lot of debug options.. :-o :-)

Thanks,
-Will

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Fix below. Thanks,

tglx

-------
commit ffc969930727238b847176c203bdbe1f9dffe403

Author: Thomas Gleixner <[email protected]>
Date:   Tue Aug 11 20:03:47 2009 +0200

locks: Fix PREEMPT=y, LOCKBREAK=y, DEBUG_LOCK_ALLOC=n compile

Should be folded back into the atomic lock conversion

index 4f0bc8b..76f694c 100644
@@ -9,8 +9,8 @@
  * (We do this in a function because inlining it would be excessive.)
  */
 
-#define BUILD_LOCK_OPS(op, locktype)					\
-void __lockfunc _##op##_lock(locktype##_t *lock)			\
+#define BUILD_LOCK_OPS(prefix, op, locktype)				\
+void __lockfunc _##prefix##_lock(locktype##_t *lock)			\
 {									\
 	for (;;) {							\
 		preempt_disable();					\

@@ -20,15 +20,15 @@ void __lockfunc _##op##_lock(locktype##_t *lock)			\
 									\
 		if (!(lock)->break_lock)				\
 			(lock)->break_lock = 1;				\
-		while (!op##_can_lock(lock) && (lock)->break_lock)	\
+		while (!prefix##_can_lock(lock) && (lock)->break_lock)	\
 			_raw_##op##_relax(&lock->raw_lock);		\
 	}								\
 	(lock)->break_lock = 0;						\
 }									\
 									\
-EXPORT_SYMBOL(_##op##_lock);						\
+EXPORT_SYMBOL(_##prefix##_lock);					\
 									\
-unsigned long __lockfunc _##op##_lock_irqsave(locktype##_t *lock)	\
+unsigned long __lockfunc _##prefix##_lock_irqsave(locktype##_t *lock)	\
 {									\
 	unsigned long flags;						\
 									\

@@ -42,23 +42,23 @@ unsigned long __lockfunc _##op##_lock_irqsave(locktype##_t *lock)	\
 									\
 		if (!(lock)->break_lock)				\
 			(lock)->break_lock = 1;				\
-		while (!op##_can_lock(lock) && (lock)->break_lock)	\
+		while (!prefix##_can_lock(lock) && (lock)->break_lock)	\
 			_raw_##op##_relax(&lock->raw_lock);		\
 	}								\
 	(lock)->break_lock = 0;						\
 	return flags;							\
 }									\
 									\
-EXPORT_SYMBOL(_##op##_lock_irqsave);					\
+EXPORT_SYMBOL(_##prefix##_lock_irqsave);				\
 									\
-void __lockfunc _##op##_lock_irq(locktype##_t *lock)			\
+void __lockfunc _##prefix##_lock_irq(locktype##_t *lock)		\
 {									\
-	_##op##_lock_irqsave(lock);					\
+	_##prefix##_lock_irqsave(lock);					\
 }									\
 									\
-EXPORT_SYMBOL(_##op##_lock_irq);					\
+EXPORT_SYMBOL(_##prefix##_lock_irq);					\
 									\
-void __lockfunc _##op##_lock_bh(locktype##_t *lock)			\
+void __lockfunc _##prefix##_lock_bh(locktype##_t *lock)			\
 {									\
 	unsigned long flags;						\
 									\

@@ -67,9 +67,9 @@ void __lockfunc _##op##_lock_bh(locktype##_t *lock)			\
 	/* irq-disabling. We use the generic preemption-aware	*/	\
 	/* function:						*/	\
 	/**/								\
-	flags = _##op##_lock_irqsave(lock);				\
+	flags = _##prefix##_lock_irqsave(lock);				\
 	local_bh_disable();						\
 	local_irq_restore(flags);					\
 }									\
 									\
-EXPORT_SYMBOL(_##op##_lock_bh)
+EXPORT_SYMBOL(_##prefix##_lock_bh)

index 35460b3..eaf34c8 100644
@@ -146,8 +146,8 @@ EXPORT_SYMBOL(_write_lock);
  *         _[read|write]_lock_irqsave()
  *         _[read|write]_lock_bh()
  */
-BUILD_LOCK_OPS(read, rwlock);
-BUILD_LOCK_OPS(write, rwlock);
+BUILD_LOCK_OPS(read, read, rwlock);
+BUILD_LOCK_OPS(write, write, rwlock);
 
 #endif /* CONFIG_PREEMPT */
 

index 6a3c0c4..e3194d5 100644
@@ -100,7 +100,7 @@ EXPORT_SYMBOL(_atomic_spin_lock);
  *         _atomic_spin_lock_irqsave()
  *         _atomic_spin_lock_bh()
  */
-BUILD_LOCK_OPS(atomic_spin, atomic_spinlock);
+BUILD_LOCK_OPS(atomic_spin, spin, atomic_spinlock);
 
 #endif /* CONFIG_PREEMPT */
 

Thanks Thomas,
Still doesn't boot, but after turning on every spinlock and early
debug option I could find I have some more data. :-)

The .find_legacy_serial_ports function in the backtrace is very very
early during boot. I'll do a bit more looking around to see if it's
anything obvious,..

Thanks,
-Will

-----><-----

Found initrd at 0xc000000003b00000:0xc000000003c8d000
-> pSeries_init_early()
-> fw_cmo_feature_init()
CMO_PageSize = 4096
CMO not enabled, PrPSP=-1, SecPSP=-1
<- fw_cmo_feature_init()
<- pSeries_init_early()

=============================================
[ INFO: possible recursive locking detected ] 2.6.31-rc4-rt1-wms.aug12 #2
---------------------------------------------
swapper/0 is trying to acquire lock:
(devtree_lock){......}, at: [<c0000000006683fc>] .of_find_property+0x78/0x140

but task is already holding lock:
(devtree_lock){......}, at: [<c0000000006694f0>] .of_find_compatible_node+0x48/0x158

other info that might help us debug this:
1 lock held by swapper/0:
#0: (devtree_lock){......}, at: [<c0000000006694f0>] .of_find_compatible_node+0x48/0x158

stack backtrace:
Call Trace:
[c000000000fbf700] [c0000000000181ac] .show_stack+0x124/0x320 (unreliable)
[c000000000fbf7d0] [c00000000001a410] .dump_stack+0x28/0x3c
[c000000000fbf850] [c000000000118214] .validate_chain+0x6f4/0xed8
[c000000000fbf910] [c000000000119244] .__lock_acquire+0x84c/0x900
[c000000000fbfa10] [c00000000011a3ec] .lock_acquire+0x144/0x194
[c000000000fbfae0] [c0000000007ac620] ._atomic_spin_lock+0x58/0x84
[c000000000fbfb70] [c0000000006683fc] .of_find_property+0x78/0x140
[c000000000fbfc10] [c000000000668508] .of_get_property+0x44/0x78
[c000000000fbfcb0] [c000000000668f78] .of_device_is_compatible+0x48/0x118
[c000000000fbfd60] [c000000000669554] .of_find_compatible_node+0xac/0x158
[c000000000fbfe00] [c000000000b49db8] .find_legacy_serial_ports+0x358/0xb8c
[c000000000fbfee0] [c000000000b3d798] .setup_system+0x3d0/0x6c8
[c000000000fbff90] [c0000000000083c8] .start_here_common+0xc/0x44
BUG: spinlock lockup on CPU#0, swapper/0, c000000000ea9f48
Call Trace:
[c000000000fbf8f0] [c0000000000181ac] .show_stack+0x124/0x320 (unreliable)
[c000000000fbf9c0] [c00000000001a410] .dump_stack+0x28/0x3c
[c000000000fbfa40] [c0000000004785c4] ._raw_spin_lock+0x2a8/0x2e8
[c000000000fbfae0] [c0000000007ac62c] ._atomic_spin_lock+0x64/0x84
[c000000000fbfb70] [c0000000006683fc] .of_find_property+0x78/0x140
[c000000000fbfc10] [c000000000668508] .of_get_property+0x44/0x78
[c000000000fbfcb0] [c000000000668f78] .of_device_is_compatible+0x48/0x118
[c000000000fbfd60] [c000000000669554] .of_find_compatible_node+0xac/0x158
[c000000000fbfe00] [c000000000b49db8] .find_legacy_serial_ports+0x358/0xb8c
[c000000000fbfee0] [c000000000b3d798] .setup_system+0x3d0/0x6c8
[c000000000fbff90] [c0000000000083c8] .start_here_common+0xc/0x44

Will,

I almost expected some wreckage from converting a rwlock to a spinlock. Grr. That code really takes the lock recursive. None of my powerpc systems triggered that code path. :(

So the reason for having a rwlock was not the concurrent access, it was just the lazy^W reuse of the existing functions which lead to recursive locking.

As it's the only code in tree which would need the real rwlock version I fixed up the of code instead of creating all the extra rwlock functions for rt.

Does the patch below fix it ?

Thanks,

tglx
-----
commit 925df9b36dc9abe0bab32cbd2ac544d773da71ff

Author: Thomas Gleixner <[email protected]>
Date:   Thu Aug 13 09:04:10 2009 +0200

OF: Fixup resursive locking code paths

The conversion of devtree_lock from rwlock to spinlock unearthed recursive locking pathes. Instead of going down the hassle of having an atomic_rwlock implementation fixup the code pathes to avoid the recursive locking.

index 26f4a62..3626e37 100644
@@ -59,16 +59,14 @@ int of_n_size_cells(struct device_node *np)
 }
 EXPORT_SYMBOL(of_n_size_cells);
 
-struct property *of_find_property(const struct device_node *np,
-				  const char *name,
-				  int *lenp)
+static struct property *__of_find_property(const struct device_node *np,
+					   const char *name, int *lenp)
 {
 	struct property *pp;
 
 	if (!np)
 		return NULL;
 
-	atomic_spin_lock(&devtree_lock);
 	for (pp = np->properties; pp != 0; pp = pp->next) {
 		if (of_prop_cmp(pp->name, name) == 0) {
 			if (lenp != 0)

@@ -76,6 +74,18 @@ struct property *of_find_property(const struct device_node *np,
 			break;
 		}
 	}
+
+	return pp;
+}
+
+struct property *of_find_property(const struct device_node *np,
+				  const char *name,
+				  int *lenp)
+{
+	struct property *pp;
+
+	atomic_spin_lock(&devtree_lock);
+	pp = __of_find_property(np, name, lenp);
 	atomic_spin_unlock(&devtree_lock);
 
 	return pp;

@@ -86,8 +96,20 @@ EXPORT_SYMBOL(of_find_property);
  * Find a property with a given name for a given node
  * and return the value.
  */
+static const void *__of_get_property(const struct device_node *np,
+				     const char *name, int *lenp)
+{
+	struct property *pp = __of_find_property(np, name, lenp);
+
+	return pp ? pp->value : NULL;
+}
+
+/*
+ * Find a property with a given name for a given node
+ * and return the value.
+ */
 const void *of_get_property(const struct device_node *np, const char *name,
-			 int *lenp)
+			    int *lenp)
 {
 	struct property *pp = of_find_property(np, name, lenp);
 

@@ -98,13 +120,13 @@ EXPORT_SYMBOL(of_get_property);
 /** Checks if the given "compat" string matches one of the strings in
  * the device's "compatible" property
  */
-int of_device_is_compatible(const struct device_node *device,
-		const char *compat)
+static int __of_device_is_compatible(const struct device_node *device,
+				     const char *compat)
 {
 	const char* cp;
-	int cplen, l;
+	int uninitialized_var(cplen), l;
 
-	cp = of_get_property(device, "compatible", &cplen);
+	cp = __of_get_property(device, "compatible", &cplen);
 	if (cp == NULL)
 		return 0;
 	while (cplen > 0) {

@@ -117,6 +139,20 @@ int of_device_is_compatible(const struct device_node *device,
 
 	return 0;
 }
+
+/** Checks if the given "compat" string matches one of the strings in
+ * the device's "compatible" property
+ */
+int of_device_is_compatible(const struct device_node *device,
+		const char *compat)
+{
+	int res;
+
+	atomic_spin_lock(&devtree_lock);
+	res = __of_device_is_compatible(device, compat);
+	atomic_spin_unlock(&devtree_lock);
+	return res;
+}
 EXPORT_SYMBOL(of_device_is_compatible);
 
 /**

@@ -319,7 +355,8 @@ struct device_node *of_find_compatible_node(struct device_node *from,
 		if (type
 		    && !(np->type && (of_node_cmp(np->type, type) == 0)))
 			continue;
-		if (of_device_is_compatible(np, compatible) && of_node_get(np))
+		if (__of_device_is_compatible(np, compatible) &&
+		    of_node_get(np))
 			break;
 	}
 	of_node_put(from);

@@ -363,15 +400,9 @@ out:
 }
 EXPORT_SYMBOL(of_find_node_with_property);
 
-/**
- * of_match_node - Tell if an device_node has a matching of_match structure
- *	@matches:	array of of device match structures to search in
- *	@node:		the of device structure to match against
- *
- *	Low level utility function used by device matching.
- */
-const struct of_device_id *of_match_node(const struct of_device_id *matches,
-					 const struct device_node *node)
+static const struct of_device_id *
+__of_match_node(const struct of_device_id *matches,
+		const struct device_node *node)
 {
 	while (matches->name[0] || matches->type[0] || matches->compatible[0]) {
 		int match = 1;

@@ -382,14 +413,32 @@ const struct of_device_id *of_match_node(const struct of_device_id *matches,
 			match &= node->type
 				&& !strcmp(matches->type, node->type);
 		if (matches->compatible[0])
-			match &= of_device_is_compatible(node,
-						matches->compatible);
+			match &= __of_device_is_compatible(node,
+							   matches->compatible);
 		if (match)
 			return matches;
 		matches++;
 	}
 	return NULL;
 }
+
+/**
+ * of_match_node - Tell if an device_node has a matching of_match structure
+ *	@matches:	array of of device match structures to search in
+ *	@node:		the of device structure to match against
+ *
+ *	Low level utility function used by device matching.
+ */
+const struct of_device_id *of_match_node(const struct of_device_id *matches,
+					 const struct device_node *node)
+{
+	const struct of_device_id *match;
+
+	atomic_spin_lock(&devtree_lock);
+	match = __of_match_node(matches, node);
+	atomic_spin_unlock(&devtree_lock);
+	return match;
+}
 EXPORT_SYMBOL(of_match_node);
 
 /**

@@ -412,7 +461,7 @@ struct device_node *of_find_matching_node(struct device_node *from,
 	atomic_spin_lock(&devtree_lock);
 	np = from ? from->allnext : allnodes;
 	for (; np; np = np->allnext) {
-		if (of_match_node(matches, np) && of_node_get(np))
+		if (__of_match_node(matches, np) && of_node_get(np))
 			break;
 	}
 	of_node_put(from);

Yes, and thanks for spinning that up for me.

With this patch, the reported problem is cleared up.. :-) Now I'm
getting as far as finding the other processors in the system before it stops. :-(

Last output on the console is
"
...
clockevent: decrementer mult[83126e97] shift[32] cpu[3] Processor 3 found.
clockevent: decrementer mult[83126e97] shift[32] cpu[4] Processor 4 found.
"

Some other info is in the log_buf, I got this via xmon dump, and parsed it by hand, try to ignore the extra spaces.. :-)

<7>xics: map virq 16, hwi rq 0x2.
<7>irq: i rq 2 on host nul l mapped to virt ual irq 16. <7>xi cs: unmask virq 16.
<7> -> map to hwirq 0x2.
<6>Te sting tracer nop : PASSED.
<7>cloc kevent: decremen ter mult[83126e9 7] shift[32] cpu [1]. <4>Processor 1 found..
<7>clo ckevent: decreme nter mult[83126e 97] shift[32] cp u[2]. <4>Processo r 2 found..
<7>cl ockevent: decrem enter mult[83126 e97] shift[32] c pu[3]. <4>Process or 3 found..
<7>c lockevent: decre menter mult[8312 6e97] shift[32] cpu[4]. <4>Proces sor 4 found..
<4> .
<4>============ ================ =====.
<4>[ INFO: inconsistent lo ck state ].
<4>2. 6.31-rc4-rt1-wms .aug12 #3.
<4>--- ---------------- --------------.
< 4>inconsistent { HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage.. <4>irq/16 -IPI/3 [HC1[1]:S C0[0]:HE0:SE1] t akes:.
<4> (devtr ee_lock){?.+...} , at: [
<c0000000 006684f8>] .of_f ind_property+0x4 c/0x9c. <4>{HARDI RQ-ON-W} state w as registered at :.
<4> [
<c000000 000119090>] .__l ock_acquire+0x69 8/0x900.
<4> [
<c 00000000011a3ec> ] .lock_acquire+ 0x144/0x194.
<4> [
<c0000000007ac 7d8>] ._atomic_s pin_lock+0x58/0x 84.
<4> [
<c00000 0000668dfc>] .of _find_node_by_na me+0x40/0x110.
<4 > [
<c0000000005 0d320>] .hvc_fin d_vtys+0x128/0x1 68.
<4> [
<c00000 0000b78c68>] .co nsole_init+0x50/ 0x7c.
<4> [
<c000 000000b34d70>] . start_kernel+0x3 40/0x59c.
<4> [
< c0000000000083d8 >] .start_here_c ommon+0x1c/0x44.
<4>irq event sta mp: 9532942.
<4>h ardirqs last en abled at (953294 1): [
<c000000000 008a1c>] restore +0x1c/0xec.
<4>ha rdirqs last disa bled at (9532942 ): [
<c0000000000 04808>] hardware _interrupt_entry +0x10/0x20. <4>so ftirqs last ena bled at (0): [
<c 0000000000bb6e4> ] .copy_process+ 0x8dc/0x20c8.
<4> softirqs last di sabled at (0): [
<(null)>] (null) .
<4>.
<4>other in fo that might he lp us debug this :.
<4>1 lock held by irq/16-IPI/3 :.
<4> #0: (&rq- >lock){-.....}, at: [
<c000000000 09bc20>] .task_r q_lock+0x80/0x12 8.
<4>.
<4>stack b acktrace:.
<4>Cal l Trace:.
<4>[c00 000000fffaf40] [ c0000000000181ac ] .show_stack+0x 124/0x320 (unrel iable).
<4>[c0000 0000fffb010] [c0 0000000001a410] .dump_stack+0x28 /0x3c. <4>[c00000 000fffb090] [c00 0000000114dc0] . print_usage_bug+ 0x1dc/0x214.
<4>[ c00000000fffb150 ] [c000000000115 18c] .mark_lock+ 0x394/0x700. <4>[ c00000000fffb210 ] [c000000000119 008] .__lock_acq uire +0x610/0x900 .
<4>[c00000000ff fb310] [c0000000 0011a3ec] .lock_ acquire+0x144/0x 194. <4>[c0000000 0fffb3e0] [c0000 000007ac7d8] ._a tomic_spin_lock+ 0x58/0x84.
<4>[c0 0000000fffb470] [c0000000006684f 8] .of_find_prop erty+0x4c/0x9c. < 4>[c00000000fffb 510] [c000000000 66858c] .of_get_ property+0x44/0x 78.
<4>[c00000000 fffb5b0] [c00000 000002f244] .rta s_token+0x6c/0xa 0. <4>[c00000000f ffb640] [c000000 00007ffe8] .fwnm i_release_errinf o +0x24/0x98.
<4>[ c00000000fffb6c0 ] [c000000000080 3f4] .pSeries_sy stem_reset_excep tion+0x94/0xb0.
< 4>[c00000000fffb 750] [c000000000 03dae4] .system_ reset_exception+ 0x7c/0x174.
<4>[c 00000000fffb7e0] [c0000000000034 04] system_reset _common+0x104/0x 180.
<4>--- Excep tion: 100 at ._r aw_spin_lock+0x8 0/0x2e8.
<4> L R = ._raw_spin_l ock+0x64/0x2e8.
< 4>[c00000000fffb b70] [c000000000 7ac7e4] ._atomic _spin_lock+0x64/ 0x84.
<4>[c000000 00fffbc00] [c000 00000009bc20] .t ask_rq_lock+0x80 /0x128. <4>[c0000 0000fffbcb0] [c0 000000000b33f4] .try_to_wake_up+ 0x114/0x6e0. <4>[ c00000000fffbd90 ] [c0000000000b3 bac] .wake_up_pr ocess +0x38/0x50.
<4>[c00000000fff be20] [c00000000 0155a70] .handle _IRQ_event +0x3f4 /0x460.
<4>[c0000 0000fffbef0] [c0 0000000015a06c] .handle_percpu_i rq +0xbc/0x184.
<4 >[c00000000fffbf 90] [c0000000000 40da8] .call_han dle_irq+0x1c/0x2 c.
<4>[c00000006a 3e7940] [c000000 000011cb4] .do_I RQ+0x20c/0x30c. < 4>[c00000006a3e7 9f0] [c000000000 004814] hardware _interrupt_entry +0x1c/0x20.
<4>-- - Exception: 501 at .raw_local_i rq_restore+0x10c /0x124. <4> LR = .schedule+0x5 8/0xbc.
<4>[c0000 0006a3e7d70] [c0 000000001588dc] .irq_thread+0x41 c/0x4a4. <4>[c000 00006a3e7e20] [c 0000000000f7844] .kthread+0xdc/0 xe8. <4>[c0000000 6a3e7f90] [c0000 00000041010] .ke rnel_thread +0x54 /0x70....

No additional spinlock error messages, I'll see what else I can figure out and follow up with more details.

I searched the mails in this chain, but did not find the following BUG reported yet. I hit this once while booting up.

INIT: version 2.86 bootingBUG: unable to handle kernel NULL pointer dereference at 0000000000000024
IP: [<ffffffff81050fe6>] try_to_wake_up+0x3b/0x2e2
PGD 0

Oops: 0000 [#1] PREEMPT SMP 
last sysfs file: /sys/block/sda/dev
CPU 5 
Modules linked in: dm_region_hash dm_log dm_mod ata_piix libata shpchp mptsas mptscsih mptbase scsi_transport_sas sd_mod scsi_mod crc_t10dif ext3 jbd mbcache uhci_hcd ohci_hcd ehci_hcd
Pid: 0, comm: swapper Not tainted 2.6.31-rc4-rt1 #1 IBM eServer BladeCenter HS21 -[7995AAA]-
RIP: 0010:[<ffffffff81050fe6>]  [<ffffffff81050fe6>] try_to_wake_up+0x3b/0x2e2
RSP: 0018:ffff880028199e38  EFLAGS: 00010082
RAX: 0000000000000000 RBX: 000000000000001e RCX: 0000000000000000
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000000
RBP: ffff880028199e88 R08: b000000000000000 R09: 0000000000000001
R10: 0000000000000001 R11: 017dbbb7ec537836 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff880028196000(0000) knlGS:0000000000000000
CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 0000000000000024 CR3: 0000000001001000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process swapper (pid: 0, threadinfo ffff88022f342000, task ffff88022f340000)
Stack:
 ffffffff810bd00b 00000000ec537836 ffffffff81619840 ffff88022c58e640
<0> 017dbbb7ec537836 ffffffff81619840 ffff88022c58e640 0000000000000001
<0> 0000000000000004 0000000000000000 ffff880028199ea8 ffffffff810513fb
Call Trace:
 <IRQ> 
 [<ffffffff810bd00b>] ? handle_edge_irq+0x35/0x13d
 [<ffffffff810513fb>] wake_up_process+0x2a/0x40
 [<ffffffff810baf12>] handle_IRQ_event+0x169/0x1a1
 [<ffffffff810bd0b7>] handle_edge_irq+0xe1/0x13d
 [<ffffffff8100f031>] handle_irq+0x9d/0xbf
 [<ffffffff8100acc9>] ? exit_idle+0x33/0x49
 [<ffffffff813f0b12>] do_IRQ+0x72/0xd9
 [<ffffffff8100cc93>] ret_from_intr+0x0/0xa
 <EOI> 
 [<ffffffff810151dd>] ? mwait_idle+0x8b/0xb2
 [<ffffffff810151d0>] ? mwait_idle+0x7e/0xb2
 [<ffffffff8100abfe>] ? enter_idle+0x38/0x4e
 [<ffffffff8100b3da>] ? cpu_idle+0xae/0x100
 [<ffffffff813e3f4e>] ? start_secondary+0x19d/0x1b8
Code: 28 0f 1f 44 00 00 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 80 3d 09 e4 5c 00 00 41 89 d6 89 4d bc 49 89 fc 89 f3 44 0f 49 f0 <83> 7f 24 63 44 0f 4e f0 48 8d 75 c8 89 db e8 95 53 ff ff 48 89 
RIP  [<ffffffff81050fe6>] try_to_wake_up+0x3b/0x2e2
 RSP <ffff880028199e38>
CR2: 0000000000000024
---[ end trace f21e517c335b6dab ]---
Kernel panic - not syncing: Fatal exception in interrupt

Thanks,
Sripathi.

<snip>

I hit this occasionally as well.

--
Darren

Darren Hart
IBM Linux Technology Center
Real-Time Linux Team

Here come a few that fix stuff for ARM. Expect some more later.

Best regards
Uwe

Pengutronix e.K.                              | Uwe Kleine-König            |
Industrial Linux Solutions                    | http://www.pengutronix.de/  |

This fixes the following error:

	  CC      drivers/mfd/ucb1x00-core.o
	drivers/mfd/ucb1x00-core.c: In function 'ucb1x00_adc_enable':
	drivers/mfd/ucb1x00-core.c:138: error: implicit declaration of function 'down'
	drivers/mfd/ucb1x00-core.c: In function 'ucb1x00_adc_disable':
	drivers/mfd/ucb1x00-core.c:196: error: implicit declaration of function 'up'
	drivers/mfd/ucb1x00-core.c: In function 'ucb1x00_probe':
	drivers/mfd/ucb1x00-core.c:500: error: implicit declaration of function 'sema_init'

---
Hello,

should this better be converted to mutex_lock/mutex_unlock?

Best regards
Uwe

---
 drivers/mfd/ucb1x00-core.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

index fea9085..3c59c26 100644
@@ -24,6 +24,7 @@
 #include <linux/interrupt.h>
 #include <linux/device.h>
 #include <linux/mutex.h>
+#include <linux/semaphore.h>
 
 #include <mach/dma.h>
 #include <mach/hardware.h>

1.6.3.3

This fixes a build failure for 2.6.31-rc4-rt1 (ARCH=arm, s3c2410_defconfig):

	  CC [M]  sound/soc/s3c24xx/s3c2443-ac97.o
	sound/soc/s3c24xx/s3c2443-ac97.c:50: warning: type defaults to 'int' in declaration of 'DECLARE_MUTEX'
	sound/soc/s3c24xx/s3c2443-ac97.c:50: warning: parameter names (without types) in function declaration
	sound/soc/s3c24xx/s3c2443-ac97.c: In function 's3c2443_ac97_read':
	sound/soc/s3c24xx/s3c2443-ac97.c:59: error: 'ac97_mutex' undeclared (first use in this function)
	sound/soc/s3c24xx/s3c2443-ac97.c:59: error: (Each undeclared identifier is reported only once
	sound/soc/s3c24xx/s3c2443-ac97.c:59: error: for each function it appears in.)
	sound/soc/s3c24xx/s3c2443-ac97.c: In function 's3c2443_ac97_write':
	sound/soc/s3c24xx/s3c2443-ac97.c:93: error: 'ac97_mutex' undeclared (first use in this function)

---
 sound/soc/s3c24xx/s3c2443-ac97.c |   10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)

index 3f03d5d..bf16f20 100644
@@ -47,7 +47,7 @@ static struct s3c24xx_ac97_info s3c24xx_ac97;
 
 static DECLARE_COMPLETION(ac97_completion);
 static u32 codec_ready;
-static DECLARE_MUTEX(ac97_mutex);
+static DEFINE_MUTEX(ac97_mutex);
 
 static unsigned short s3c2443_ac97_read(struct snd_ac97 *ac97,
 	unsigned short reg)

@@ -56,7 +56,7 @@ static unsigned short s3c2443_ac97_read(struct snd_ac97 *ac97,
 	u32 ac_codec_cmd;
 	u32 stat, addr, data;
 
-	down(&ac97_mutex);
+	mutex_lock(&ac97_mutex);
 
 	codec_ready = S3C_AC97_GLBSTAT_CODECREADY;
 	ac_codec_cmd = readl(s3c24xx_ac97.regs + S3C_AC97_CODEC_CMD);

@@ -79,7 +79,7 @@ static unsigned short s3c2443_ac97_read(struct snd_ac97 *ac97,
 		printk(KERN_ERR "s3c24xx-ac97: req addr = %02x,"
 				" rep addr = %02x\n", reg, addr);
 
-	up(&ac97_mutex);
+	mutex_unlock(&ac97_mutex);
 
 	return (unsigned short)data;
 }

@@ -90,7 +90,7 @@ static void s3c2443_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
 	u32 ac_glbctrl;
 	u32 ac_codec_cmd;
 
-	down(&ac97_mutex);
+	mutex_lock(&ac97_mutex);
 
 	codec_ready = S3C_AC97_GLBSTAT_CODECREADY;
 	ac_codec_cmd = readl(s3c24xx_ac97.regs + S3C_AC97_CODEC_CMD);

@@ -109,7 +109,7 @@ static void s3c2443_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
 	ac_codec_cmd |= S3C_AC97_CODEC_CMD_READ;
 	writel(ac_codec_cmd, s3c24xx_ac97.regs + S3C_AC97_CODEC_CMD);
 
-	up(&ac97_mutex);
+	mutex_unlock(&ac97_mutex);
 
 }
 

1.6.3.3

Applied, thanks.

This fixes a a build failure for 2.6.31-rc4-rt1 (ARCH=arm, msm_defconfig):

CC arch/arm/mach-msm/proc_comm.o
/ptx/work/octopus/WORK_2_A/ukl/gsrc/linux-2.6/arch/arm/mach-msm/proc_comm.c:43: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__cacheline_aligned_in_smp' /ptx/work/octopus/WORK_2_A/ukl/gsrc/linux-2.6/arch/arm/mach-msm/proc_comm.c: In function 'msm_proc_comm':
/ptx/work/octopus/WORK_2_A/ukl/gsrc/linux-2.6/arch/arm/mach-msm/proc_comm.c:76: error: 'proc_comm_lock' undeclared (first use in this function) /ptx/work/octopus/WORK_2_A/ukl/gsrc/linux-2.6/arch/arm/mach-msm/proc_comm.c:76: error: (Each undeclared identifier is reported only once /ptx/work/octopus/WORK_2_A/ukl/gsrc/linux-2.6/arch/arm/mach-msm/proc_comm.c:76: error: for each function it appears in.)

---
 arch/arm/mach-msm/proc_comm.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

index 915ee70..e825c36 100644
@@ -14,6 +14,7 @@
  *
  */
 
+#include <linux/cache.h>
 #include <linux/delay.h>
 #include <linux/errno.h>
 #include <linux/io.h>

1.6.3.3

This fixes a build warning for 2.6.31-rc5 (ARCH=arm, ixp2000_defconfig):

CC arch/arm/mach-ixp2000/core.o
arch/arm/mach-ixp2000/core.c:217: warning: initialization from incompatible pointer type

---
 arch/arm/mach-ixp2000/core.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

index babb225..e24e3d0 100644
@@ -197,7 +197,7 @@ unsigned long ixp2000_gettimeoffset (void)
 	return offset / ticks_per_usec;
 }
 
-static int ixp2000_timer_interrupt(int irq, void *dev_id)
+static irqreturn_t ixp2000_timer_interrupt(int irq, void *dev_id)
 {
 	/* clear timer 1 */
 	ixp2000_reg_wrb(IXP2000_T1_CLR, 1);

1.6.3.3

This fixes a build failure for 2.6.31-rc5 (ARCH=arm, ixp2000_defconfig):

	  CC      drivers/net/ixp2000/enp2611.o
	drivers/net/ixp2000/enp2611.c: In function 'enp2611_init_module':
	drivers/net/ixp2000/enp2611.c:213: error: 'struct net_device' has no member named 'get_stats'

---
Hello,

obviously this has the downside that the stats won't work, I let the fix for someone else :-)

Best regards
Uwe

---
 drivers/net/ixp2000/enp2611.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

index b02a981..d6ef176 100644
@@ -210,7 +210,7 @@ static int __init enp2611_init_module(void)
 			return -ENOMEM;
 		}
 
-		nds[i]->get_stats = enp2611_get_stats;
+		/* nds[i]->get_stats = enp2611_get_stats; */
 		pm3386_init_port(i);
 		pm3386_get_mac(i, nds[i]->dev_addr);
 	}

1.6.3.3

From: Uwe Kleine-König <[email protected]>
Date: Fri, 7 Aug 2009 22:42:40 +0200

This is far from the way to fix this, unfortunately.

We need to find a way to propagate this assignment into
the netdev_ops method vector instead.
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Hello,

Yes, I tried that, but stopped when I saw it's declared const. I don't know if this is required. If yes then the only way to fix it is to add a platform callback that is called if non-NULL.

I don't want to invest time here without a word by the maintainers though.

Best regards
Uwe

Pengutronix e.K.                              | Uwe Kleine-König            |
Industrial Linux Solutions                    | http://www.pengutronix.de/  |

From: Uwe Kleine-König <[email protected]>
Date: Mon, 10 Aug 2009 11:40:27 +0200

The easiest way to handle this is to have another copy of the ops, which has the other get_stats member value, and to assign that as the netdev_ops when the relevant condition holds.

But we can't apply the patch you initially posted, that's for sure :-)
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This was missed in commit

fd2bde5 (genirq: Convert irqdesc lock to atomic_spinlock)

---
 arch/arm/include/asm/mach/irq.h |    4 ++--
 mm/highmem.c                    |    4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

index acac530..3981cf2 100644
@@ -26,9 +26,9 @@ extern int show_fiq_list(struct seq_file *, void *);
  */
 #define do_bad_IRQ(irq,desc)				\
 do {							\
-	spin_lock(&desc->lock);				\
+	atomic_spin_lock(&desc->lock);			\
 	handle_bad_irq(irq, desc);			\
-	spin_unlock(&desc->lock);			\
+	atomic_spin_unlock(&desc->lock);		\
 } while(0)
 
 #endif

index 66e915a..214eefd 100644
@@ -372,8 +372,8 @@ void *kmap_high_get(struct page *page)
 	lock_kmap_any(flags);
 	vaddr = (unsigned long)page_address(page);
 	if (vaddr) {
-		BUG_ON(pkmap_count[PKMAP_NR(vaddr)] < 1);
-		pkmap_count[PKMAP_NR(vaddr)]++;
+		BUG_ON(atomic_read(&pkmap_count[PKMAP_NR(vaddr)]) < 1);
+		atomic_add(1, pkmap_count[PKMAP_NR(vaddr)]);
 	}
 	unlock_kmap_any(flags);
 	return (void*) vaddr;

1.6.3.3

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Hello,

Pengutronix e.K.                              | Uwe Kleine-König            |
Industrial Linux Solutions                    | http://www.pengutronix.de/  |

This was missed in commit

fd2bde5 (genirq: Convert irqdesc lock to atomic_spinlock)

---
 arch/arm/include/asm/mach/irq.h |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

index acac530..3981cf2 100644
@@ -26,9 +26,9 @@ extern int show_fiq_list(struct seq_file *, void *);
  */
 #define do_bad_IRQ(irq,desc)				\
 do {							\
-	spin_lock(&desc->lock);				\
+	atomic_spin_lock(&desc->lock);			\
 	handle_bad_irq(irq, desc);			\
-	spin_unlock(&desc->lock);			\
+	atomic_spin_unlock(&desc->lock);		\
 } while(0)
 
 #endif

1.6.3.3

This fixes a a build failure for 2.6.31-rc4-rt1 (ARCH=arm, mv78xx0_defconfig and others):

mm/bounce.c: In function 'bounce_copy_vec':
mm/bounce.c:52: error: implicit declaration of function 'local_irq_save_nort' mm/bounce.c:56: error: implicit declaration of function 'local_irq_restore_nort'

---
 mm/bounce.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

index 2fd099c..4a91eed 100644
@@ -13,6 +13,7 @@
 #include <linux/init.h>
 #include <linux/hash.h>
 #include <linux/highmem.h>
+#include <linux/interrupt.h>
 #include <asm/tlbflush.h>
 
 #include <trace/events/block.h>

1.6.3.3

This fixes a a build failure for 2.6.31-rc4-rt1 (ARCH=arm, davinci_all_defconfig):

drivers/watchdog/davinci_wdt.c: In function 'wdt_enable':
drivers/watchdog/davinci_wdt.c:102: error: 'CLOCK_TICK_RATE' undeclared (first use in this function) drivers/watchdog/davinci_wdt.c:102: error: (Each undeclared identifier is reported only once drivers/watchdog/davinci_wdt.c:102: error: for each function it appears in.)

---
 drivers/watchdog/davinci_wdt.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

index 83e22e7..4a136d7 100644
@@ -26,6 +26,8 @@
 #include <linux/io.h>
 #include <linux/device.h>
 
+#include <mach/timex.h>
+
 #define MODULE_NAME "DAVINCI-WDT: "
 
 #define DEFAULT_HEARTBEAT 60

1.6.3.3

The two commits

b38cb5a (mm: remove kmap_lock)

and

3297e76 (highmem: atomic highmem kmap page pinning)

conflict (without causing a text based conflict) because the latter introduces a usage of kmap_lock.

The actual compiler output is (e.g. for ARCH=arm, stmp378x_defconfig):

CC mm/highmem.o
mm/highmem.c: In function 'pkmap_try_free':
mm/highmem.c:116: warning: unused variable 'addr'
mm/highmem.c: In function 'kmap_high_get':
mm/highmem.c:372: error: 'kmap_lock' undeclared (first use in this function) mm/highmem.c:372: error: (Each undeclared identifier is reported only once mm/highmem.c:372: error: for each function it appears in.) mm/highmem.c:375: error: invalid operands to binary < (have 'atomic_t' and 'int') mm/highmem.c:376: error: wrong type argument to increment

The problems in lines 116 and 375f are resolved by the patch below, but I don't know highmem enough to fix the remaining error. Moreover I don't have a machine that makes use of highmem.

---
 mm/highmem.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

index 66e915a..4aa9eea 100644
@@ -113,10 +113,10 @@ static int pkmap_try_free(int pos)
 	 */
 	if (!pte_none(pkmap_page_table[pos])) {
 		struct page *page = pte_page(pkmap_page_table[pos]);
-		unsigned long addr = PKMAP_ADDR(pos);
 		pte_t *ptep = &pkmap_page_table[pos];
 
-		VM_BUG_ON(addr != (unsigned long)page_address(page));
+		VM_BUG_ON((unsigned long)PKMAP_ADDR(pos) !=
+				(unsigned long)page_address(page));
 
 		if (!__set_page_address(page, NULL, pos))
 			BUG();

@@ -372,8 +372,8 @@ void *kmap_high_get(struct page *page)
 	lock_kmap_any(flags);
 	vaddr = (unsigned long)page_address(page);
 	if (vaddr) {
-		BUG_ON(pkmap_count[PKMAP_NR(vaddr)] < 1);
-		pkmap_count[PKMAP_NR(vaddr)]++;
+		BUG_ON(atomic_read(&pkmap_count[PKMAP_NR(vaddr)]) < 1);
+		atomic_add(1, pkmap_count[PKMAP_NR(vaddr)]);
 	}
 	unlock_kmap_any(flags);
 	return (void*) vaddr;

1.6.3.3

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This fixes the build failure with ARCH_NEEDS_KMAP_HIGH_GET. This is only compile tested.

---
Hello

this bases on the patch "[PATCH RT 9/6] [RFH] Build failure on 2.6.31-rc4-rt1 in mm/highmem.c" earlier in this thread.

I don't know if kmap_high_get() has to call kmap_account(). Anyone?

As I don't have any knowledge about highmem (or mm in general) I'll go into hiding before tglx caughts me with his trout.

Best regards
Uwe

 mm/highmem.c |   79 ++++++++++++++++++++-------------------------------------
 1 files changed, 28 insertions(+), 51 deletions(-)

index 4aa9eea..b5f5faf 100644
@@ -75,26 +75,6 @@ pte_t * pkmap_page_table;
 
 static DECLARE_WAIT_QUEUE_HEAD(pkmap_wait);
 
-
-/*
- * Most architectures have no use for kmap_high_get(), so let's abstract
- * the disabling of IRQ out of the locking in that case to save on a
- * potential useless overhead.
- */
-#ifdef ARCH_NEEDS_KMAP_HIGH_GET
-#define lock_kmap()             spin_lock_irq(&kmap_lock)
-#define unlock_kmap()           spin_unlock_irq(&kmap_lock)
-#define lock_kmap_any(flags)    spin_lock_irqsave(&kmap_lock, flags)
-#define unlock_kmap_any(flags)  spin_unlock_irqrestore(&kmap_lock, flags)
-#else
-#define lock_kmap()             spin_lock(&kmap_lock)
-#define unlock_kmap()           spin_unlock(&kmap_lock)
-#define lock_kmap_any(flags)    \
-		do { spin_lock(&kmap_lock); (void)(flags); } while (0)
-#define unlock_kmap_any(flags)  \
-		do { spin_unlock(&kmap_lock); (void)(flags); } while (0)
-#endif
-
 /*
  * Try to free a given kmap slot.
  *

@@ -313,22 +293,32 @@ static void kunmap_account(void)
 	wake_up(&pkmap_wait);
 }
 
-void *kmap_high(struct page *page)
+/**
+ * kmap_high_get - pin a highmem page into memory
+ * @page: &struct page to pin
+ *
+ * Returns the page's current virtual memory address, or NULL if no mapping
+ * exists.  When and only when a non null address is returned then a
+ * matching call to kunmap_high() is necessary.
+ *
+ * This can be called from any context.
+ */
+void *kmap_high_get(struct page *page)
 {
 	unsigned long vaddr;
 
-
-	kmap_account();
 again:
 	vaddr = (unsigned long)page_address(page);
 	if (vaddr) {
 		atomic_t *counter = &pkmap_count[PKMAP_NR(vaddr)];
 		if (atomic_inc_not_zero(counter)) {
 			/*
-			 * atomic_inc_not_zero implies a (memory) barrier on success
-			 * so page address will be reloaded.
+			 * atomic_inc_not_zero implies a (memory) barrier on
+			 * success, so page address will be reloaded.
 			 */
-			unsigned long vaddr2 = (unsigned long)page_address(page);
+			unsigned long vaddr2 =
+				(unsigned long)page_address(page);
+
 			if (likely(vaddr == vaddr2))
 				return (void *)vaddr;
 

@@ -344,6 +334,18 @@ again:
 			goto again;
 		}
 	}
+	return NULL;
+}
+
+void *kmap_high(struct page *page)
+{
+	unsigned long vaddr;
+
+	kmap_account();
+again:
+	vaddr = (unsigned long)kmap_high_get(page);
+	if (vaddr)
+		return (void *)vaddr;
 
 	vaddr = pkmap_insert(page);
 	if (!vaddr)

@@ -354,31 +356,6 @@ again:
 
 EXPORT_SYMBOL(kmap_high);
 
-#ifdef ARCH_NEEDS_KMAP_HIGH_GET
-/**
- * kmap_high_get - pin a highmem page into memory
- * @page: &struct page to pin
- *
- * Returns the page's current virtual memory address, or NULL if no mapping
- * exists.  When and only when a non null address is returned then a
- * matching call to kunmap_high() is necessary.
- *
- * This can be called from any context.
- */
-void *kmap_high_get(struct page *page)
-{
-	unsigned long vaddr, flags;
-
-	lock_kmap_any(flags);
-	vaddr = (unsigned long)page_address(page);
-	if (vaddr) {
-		BUG_ON(atomic_read(&pkmap_count[PKMAP_NR(vaddr)]) < 1);
-		atomic_add(1, pkmap_count[PKMAP_NR(vaddr)]);
-	}
-	unlock_kmap_any(flags);
-	return (void*) vaddr;
-}
-#endif
 
  void kunmap_high(struct page *page)
 {

1.6.3.3

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I think it should, since it uses kunmap_high() to undo whatever kmap_high_get() did. Now, if there'd been a kmap_high_put()... :-)

As to the patch, its not quite right.

it has one, whereas the result of your patch seems to be that it'll actually create one if its not found.

Something like the below ought to do I guess.

---
 arch/arm/include/asm/highmem.h |    1 +
 arch/arm/mm/dma-mapping.c      |    2 +-
 mm/highmem.c                   |   50 ++++++++++++++++++---------------------
 3 files changed, 25 insertions(+), 28 deletions(-)

index 7f36d00..4d9573b 100644
@@ -19,6 +19,7 @@ extern pte_t *pkmap_page_table;
 
 extern void *kmap_high(struct page *page);
 extern void *kmap_high_get(struct page *page);
+extern void *kmap_high_put(struct page *page);
 extern void kunmap_high(struct page *page);
 
 extern void *kmap(struct page *page);

index 1576176..4a166d9 100644
@@ -551,7 +551,7 @@ static void dma_cache_maint_contiguous(struct page *page, unsigned long offset,
 		if (vaddr) {
 			vaddr += offset;
 			inner_op(vaddr, vaddr + size);
-			kunmap_high(page);
+			kmap_high_put(page);
 		}
 	}
 

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I don't have enough context to review this patch, but your understanding of the kmap_high_get() purpose is right.

Nicolas

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Hello,

... on irc Peter and me agreed it's not that wrong :-) Anyhow, I merged the two patches to get the benefits from both. See below.

The patch with all it's dependencies based on -rc6 is available on

git://git.pengutronix.de/git/ukl/linux-2.6.git kmap-testing

Niko: Your review would be very welcome because neither Peter nor me have a machine with highmem.

Best regards
Uwe

From: =?utf-8?q?Uwe=20Kleine-K=C3=B6nig?= <[email protected]>
Date: Fri, 14 Aug 2009 21:45:55 +0200
Subject: [PATCH] Fix kmap_high_get() as kmap locking is gone
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 8bit

This has the pros of both Peter's and my patch:

- It obsoletes ARCH_NEEDS_KMAP_HIGH_GET without introducing a big overhead for the archs not having defined that symbol.
- no code duplication between kmap_high_get and kmap_high
- a nice kmap_high_put function that does the same as kunmap_high without accounting
- no compiler warning about mismatched declarations

---
 arch/arm/include/asm/highmem.h |    3 +-
 arch/arm/mm/dma-mapping.c      |    2 +-
 mm/highmem.c                   |   98 +++++++++++++++++-----------------------
 3 files changed, 43 insertions(+), 60 deletions(-)

index 7f36d00..2082ed8 100644
@@ -15,10 +15,9 @@
 
 extern pte_t *pkmap_page_table;
 
-#define ARCH_NEEDS_KMAP_HIGH_GET
-
 extern void *kmap_high(struct page *page);
 extern void *kmap_high_get(struct page *page);
+extern void kmap_high_put(struct page *page);
 extern void kunmap_high(struct page *page);
 
 extern void *kmap(struct page *page);

index 510c179..d71aff9 100644
@@ -551,7 +551,7 @@ static void dma_cache_maint_contiguous(struct page *page, unsigned long offset,
 		if (vaddr) {
 			vaddr += offset;
 			inner_op(vaddr, vaddr + size);
-			kunmap_high(page);
+			kmap_high_put(page);
 		}
 	}
 

1.6.3.3



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see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"[email protected]"> [email protected] </a>

It should not be using CLOCK_TICK_RATE - there was a move to clean up the use of that symbol and restrict it just to the i8253 PIT. Please create something else like DAVINCI_TICK_RATE instead.

Actually, I have an alternate fix for this which I was planning to submit for 2.6.32. This one drops CLOCK_TICK_RATE and uses the clock framework to get the right tick frequency.

Here it is.

Kevin

From 6eea62609126739ce03e447c5fca49269ad5d12a Mon Sep 17 00:00:00 2001
From: Kevin Hilman <[email protected]>
Date: Tue, 10 Feb 2009 20:30:37 -0800
Subject: [PATCH] watchdog: davinci: use clock framework for timer frequency

Remove use of CLOCK_TICK_RATE in favor of using clock framework for getting timer frequency.

---
 drivers/watchdog/davinci_wdt.c |   21 +++++++++++++++++++--
 1 files changed, 19 insertions(+), 2 deletions(-)

index 83e22e7..5ed89e4 100644
@@ -25,6 +25,7 @@
 #include <linux/uaccess.h>
 #include <linux/io.h>
 #include <linux/device.h>
+#include <linux/clk.h>
 
 #define MODULE_NAME "DAVINCI-WDT: "
 

@@ -69,6 +70,7 @@ static unsigned long wdt_status;
 
 static struct resource	*wdt_mem;
 static void __iomem	*wdt_base;
+struct clk              *wdt_clk;
 
 static void wdt_service(void)
 {

@@ -86,6 +88,10 @@ static void wdt_enable(void)
 {
 	u32 tgcr;
 	u32 timer_margin;
+	u32 wdt_freq;
+
+	BUG_ON(!wdt_clk);
+	wdt_freq = clk_get_rate(wdt_clk);
 
 	spin_lock(&io_lock);
 

@@ -99,9 +105,9 @@ static void wdt_enable(void)
 	iowrite32(0, wdt_base + TIM12);
 	iowrite32(0, wdt_base + TIM34);
 	/* set timeout period */
-	timer_margin = (((u64)heartbeat * CLOCK_TICK_RATE) & 0xffffffff);
+	timer_margin = (((u64)heartbeat * wdt_freq) & 0xffffffff);
 	iowrite32(timer_margin, wdt_base + PRD12);
-	timer_margin = (((u64)heartbeat * CLOCK_TICK_RATE) >> 32);
+	timer_margin = (((u64)heartbeat * wdt_freq) >> 32);
 	iowrite32(timer_margin, wdt_base + PRD34);
 	/* enable run continuously */
 	iowrite32(ENAMODE12_PERIODIC, wdt_base + TCR);

@@ -199,6 +205,11 @@ static int __devinit davinci_wdt_probe(struct platform_device *pdev)
 	struct resource *res;
 	struct device *dev = &pdev->dev;
 
+	wdt_clk = clk_get(dev, NULL);
+	if (WARN_ON(!wdt_clk))
+		return -ENODEV;
+	clk_enable(wdt_clk);
+
 	if (heartbeat < 1 || heartbeat > MAX_HEARTBEAT)
 		heartbeat = DEFAULT_HEARTBEAT;
 

@@ -245,6 +256,12 @@ static int __devexit davinci_wdt_remove(struct platform_device *pdev)
 		kfree(wdt_mem);
 		wdt_mem = NULL;
 	}
+
+	if (wdt_clk) {
+		clk_disable(wdt_clk);
+		clk_put(wdt_clk);
+	}
+
 	return 0;
 }
 

1.6.3.3

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oops, not tabified.

removed.

fixed.

removed.

Updated version:

From: Kevin Hilman <[email protected]>
Date: Tue, 10 Feb 2009 20:30:37 -0800
Subject: [PATCH] watchdog: davinci: use clock framework for timer frequency

Remove use of CLOCK_TICK_RATE in favor of using clock framework for getting timer frequency.

---
 drivers/watchdog/davinci_wdt.c |   19 +++++++++++++++++--
 1 files changed, 17 insertions(+), 2 deletions(-)

index 83e22e7..43c42f5 100644
@@ -25,6 +25,7 @@
 #include <linux/uaccess.h>
 #include <linux/io.h>
 #include <linux/device.h>
+#include <linux/clk.h>
 
 #define MODULE_NAME "DAVINCI-WDT: "
 

@@ -69,6 +70,7 @@ static unsigned long wdt_status;
 
 static struct resource	*wdt_mem;
 static void __iomem	*wdt_base;
+struct clk		*wdt_clk;
 
 static void wdt_service(void)
 {

@@ -86,6 +88,9 @@ static void wdt_enable(void)
 {
 	u32 tgcr;
 	u32 timer_margin;
+	u32 wdt_freq;
+
+	wdt_freq = clk_get_rate(wdt_clk);
 
 	spin_lock(&io_lock);
 

@@ -99,9 +104,9 @@ static void wdt_enable(void)
 	iowrite32(0, wdt_base + TIM12);
 	iowrite32(0, wdt_base + TIM34);
 	/* set timeout period */
-	timer_margin = (((u64)heartbeat * CLOCK_TICK_RATE) & 0xffffffff);
+	timer_margin = (((u64)heartbeat * wdt_freq) & 0xffffffff);
 	iowrite32(timer_margin, wdt_base + PRD12);
-	timer_margin = (((u64)heartbeat * CLOCK_TICK_RATE) >> 32);
+	timer_margin = (((u64)heartbeat * wdt_freq) >> 32);
 	iowrite32(timer_margin, wdt_base + PRD34);
 	/* enable run continuously */
 	iowrite32(ENAMODE12_PERIODIC, wdt_base + TCR);

@@ -199,6 +204,12 @@ static int __devinit davinci_wdt_probe(struct platform_device *pdev)
 	struct resource *res;
 	struct device *dev = &pdev->dev;
 
+	wdt_clk = clk_get(dev, NULL);
+	if (WARN_ON(IS_ERR(wdt_clk)))
+		return PTR_ERR(wdt_clk);
+
+	clk_enable(wdt_clk);
+
 	if (heartbeat < 1 || heartbeat > MAX_HEARTBEAT)
 		heartbeat = DEFAULT_HEARTBEAT;
 

@@ -245,6 +256,10 @@ static int __devexit davinci_wdt_remove(struct platform_device *pdev)
 		kfree(wdt_mem);
 		wdt_mem = NULL;
 	}
+
+	clk_disable(wdt_clk);
+	clk_put(wdt_clk);
+
 	return 0;
 }
 

1.6.3.3

Wim,

If you're OK with this, can you queue this one for 2.6.32?

Thanks,

Kevin

Hi Kevin,

I'm also OK with this. I'll queue it up in my -next tree today or tomorrow.

Kind regards,
Wim.

We are pleased to announce the next update to our new preempt-rt series.

- update to 2.6.31-rc6

- ARM updates (Uwe Kleine-Koenig)

- OF fixes

- threaded interrupt crash fix (Linus)

- locking build fix

- minor fixes all over the place

There is a known boot problem on PSeries machines which is still investigated by Will. If you have access to such a beast please help to get this decoded.

I have not merged one of the proposed fixed for the ARM highmem problem. We really want someone with such a hardware to have a look and confirm the fix.

Download locations:

http://rt.et.redhat.com/download/
http://www.kernel.org/pub/linux/kernel/projects/rt/

Git release branch:

    git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/2.6.31-rc6

Git development branch:

    git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/head

Gitweb:

    http://git.kernel.org/?p=linux/kernel/git/tip/linux-2.6-tip.git;a=shortlog;h=rt/2.6.31-rc6

Information on the RT patch can be found at:

http://rt.wiki.kernel.org/index.php/Main_Page

to build the 2.6.31-rc6-rt2 tree, the following patches should be applied:

    http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.30.tar.bz2
    http://www.kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.31-rc6.bz2
    http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.31-rc6-rt2.bz2

Thanks to Clark and John for collecting patches and providing updated trees while I was on vacation.

Enjoy !

tglx

With 2.6.31-rc6-rt2, on a Dell XPS-GEN2 laptop of 2005 vintage, I'm seeing hundreds of bugs like the following reported to the system log. X graphics go away (as if screen-saver activated) apparently at random, after maybe 10 seconds.

All reported bugs are of the type:
"sleeping function called from invalid context at kernel/rtmutex.c:684"

However, the callers that trigger the bug vary. I've included a few representative call traces below.

----------------------------------------------------------------

Aug 17 08:28:46 ddl kernel: BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
Aug 17 08:28:46 ddl kernel: in_atomic(): 1, irqs_disabled(): 0, pid: 1, name: init
Aug 17 08:28:46 ddl kernel: Pid: 1, comm: init Not tainted 2.6.31-0.1.rc6.rt2.ds.fc11.i686.PAE #1
Aug 17 08:28:46 ddl kernel: Call Trace:
Aug 17 08:28:46 ddl kernel: [<c042f594>] __might_sleep+0xc4/0xc9
Aug 17 08:28:46 ddl kernel: [<c04620c5>] rt_spin_lock_fastlock.clone.1+0x29/0x62
Aug 17 08:28:46 ddl kernel: [<c0764c79>] rt_spin_lock+0xd/0xf
Aug 17 08:28:46 ddl kernel: [<c0472856>] res_counter_uncharge+0x21/0x3d
Aug 17 08:28:46 ddl kernel: [<c04c39f1>] __mem_cgroup_uncharge_common+0x8e/0xf2
Aug 17 08:28:46 ddl kernel: [<c04c3a64>] mem_cgroup_uncharge_cache_page+0xf/0x11
Aug 17 08:28:46 ddl kernel: [<c049d6e3>] remove_from_page_cache+0x37/0x3b
Aug 17 08:28:46 ddl kernel: [<c04a399a>] truncate_complete_page+0x3b/0x4a
Aug 17 08:28:46 ddl kernel: [<c04a3a8a>] truncate_inode_pages_range+0xe1/0x26c
Aug 17 08:28:46 ddl kernel: [<c04a3c27>] truncate_inode_pages+0x12/0x1b
Aug 17 08:28:46 ddl kernel: [<c04e63e8>] kill_bdev+0x31/0x34
Aug 17 08:28:46 ddl kernel: [<c04e6ec9>] __blkdev_put+0x48/0xf5
Aug 17 08:28:46 ddl kernel: [<c04e6f85>] blkdev_put+0xf/0x11
Aug 17 08:28:46 ddl kernel: [<c04e6fb7>] blkdev_close+0x30/0x34
Aug 17 08:28:46 ddl kernel: [<c04c7b45>] __fput+0xee/0x17e
Aug 17 08:28:46 ddl kernel: [<c04c7bed>] fput+0x18/0x1a
Aug 17 08:28:46 ddl kernel: [<c04c4eeb>] filp_close+0x56/0x60
Aug 17 08:28:46 ddl kernel: [<c04c4f66>] sys_close+0x71/0xa5
Aug 17 08:28:46 ddl kernel: [<c040904c>] sysenter_do_call+0x12/0x28

----------------------------------------------------------------

Aug 17 08:28:46 ddl kernel: BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
Aug 17 08:28:46 ddl kernel: in_atomic(): 1, irqs_disabled(): 0, pid: 1, name: init
Aug 17 08:28:46 ddl kernel: Pid: 1, comm: init Not tainted 2.6.31-0.1.rc6.rt2.ds.fc11.i686.PAE #1
Aug 17 08:28:46 ddl kernel: Call Trace:
Aug 17 08:28:46 ddl kernel: [<c042f594>] __might_sleep+0xc4/0xc9
Aug 17 08:28:46 ddl kernel: [<c04620c5>] rt_spin_lock_fastlock.clone.1+0x29/0x62
Aug 17 08:28:46 ddl kernel: [<c0764c79>] rt_spin_lock+0xd/0xf
Aug 17 08:28:46 ddl kernel: [<c0472856>] res_counter_uncharge+0x21/0x3d
Aug 17 08:28:46 ddl kernel: [<c04c39f1>] __mem_cgroup_uncharge_common+0x8e/0xf2
Aug 17 08:28:46 ddl kernel: [<c04c3a8b>] mem_cgroup_uncharge_page+0x25/0x27
Aug 17 08:28:46 ddl kernel: [<c04b6309>] page_remove_rmap+0x24/0x43
Aug 17 08:28:46 ddl kernel: [<c04ae78a>] unmap_vmas+0x404/0x5a5
Aug 17 08:28:46 ddl kernel: [<c04b305c>] unmap_region+0x60/0xa1
Aug 17 08:28:46 ddl kernel: [<c04b3abb>] ? split_vma+0x101/0x114
Aug 17 08:28:46 ddl kernel: [<c04b3c97>] do_munmap+0x1c9/0x222
Aug 17 08:28:46 ddl kernel: [<c04b3d27>] sys_munmap+0x37/0x47
Aug 17 08:28:46 ddl kernel: [<c040904c>] sysenter_do_call+0x12/0x28

----------------------------------------------------------------

Aug 17 08:28:46 ddl kernel: BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
Aug 17 08:28:46 ddl kernel: in_atomic(): 1, irqs_disabled(): 0, pid: 164, name: udevd
Aug 17 08:28:46 ddl kernel: Pid: 164, comm: udevd Not tainted 2.6.31-0.1.rc6.rt2.ds.fc11.i686.PAE #1
Aug 17 08:28:46 ddl kernel: Call Trace:
Aug 17 08:28:46 ddl kernel: [<c042f594>] __might_sleep+0xc4/0xc9
Aug 17 08:28:46 ddl kernel: [<c04620c5>] rt_spin_lock_fastlock.clone.1+0x29/0x62
Aug 17 08:28:46 ddl kernel: [<c0764c79>] rt_spin_lock+0xd/0xf
Aug 17 08:28:46 ddl kernel: [<c0472856>] res_counter_uncharge+0x21/0x3d
Aug 17 08:28:46 ddl kernel: [<c04c39f1>] __mem_cgroup_uncharge_common+0x8e/0xf2
Aug 17 08:28:46 ddl kernel: [<c04c3a64>] mem_cgroup_uncharge_cache_page+0xf/0x11
Aug 17 08:28:46 ddl kernel: [<c049d6e3>] remove_from_page_cache+0x37/0x3b
Aug 17 08:28:46 ddl kernel: [<c04a399a>] truncate_complete_page+0x3b/0x4a
Aug 17 08:28:46 ddl kernel: [<c04a3a8a>] truncate_inode_pages_range+0xe1/0x26c
Aug 17 08:28:46 ddl kernel: [<c04a3c27>] truncate_inode_pages+0x12/0x1b
Aug 17 08:28:46 ddl kernel: [<c04aee19>] vmtruncate+0xc9/0x117
Aug 17 08:28:46 ddl kernel: [<c04d704b>] inode_setattr+0x61/0x132
Aug 17 08:28:46 ddl kernel: [<c04a8708>] shmem_notify_change+0x9f/0xce
Aug 17 08:28:46 ddl kernel: [<c04d728b>] notify_change+0x16f/0x2bc
Aug 17 08:28:46 ddl kernel: [<c04c5bf2>] do_truncate+0x64/0x7d
Aug 17 08:28:46 ddl kernel: [<c0764ccf>] ? _mutex_lock+0xd/0xf
Aug 17 08:28:46 ddl kernel: [<c04c5bf2>] ? do_truncate+0x64/0x7d
Aug 17 08:28:46 ddl kernel: [<c04cf2eb>] may_open+0x187/0x18b
Aug 17 08:28:46 ddl kernel: [<c04cf944>] do_filp_open+0x3c3/0x6ea
Aug 17 08:28:46 ddl kernel: [<c04620c5>] ? rt_spin_lock_fastlock.clone.1+0x29/0x62
Aug 17 08:28:46 ddl kernel: [<c04620c5>] ? rt_spin_lock_fastlock.clone.1+0x29/0x62
Aug 17 08:28:46 ddl kernel: [<c04d7d88>] ? alloc_fd+0xc2/0xcf
Aug 17 08:28:46 ddl kernel: [<c04c4fe7>] do_sys_open+0x4d/0xe4
Aug 17 08:28:46 ddl kernel: [<c047951b>] ? audit_syscall_entry+0x12a/0x14c
Aug 17 08:28:46 ddl kernel: [<c04c50ca>] sys_open+0x23/0x2b
Aug 17 08:28:46 ddl kernel: [<c040904c>] sysenter_do_call+0x12/0x28

----------------------------------------------------------------

We are pleased to announce the next update to our new preempt-rt series.

[ I skipped -rt3 as it failed in testing ]

- update to the ONESHOT irq infrastructure scheduled for mainline

- scheduling while atomic fix in tty_ldisc

The know problems (PSeries / ARM highmem) still persist and we have a new one which is related to cgroup memcontrol. The latter one is easy to fix but will have to wait for the next release.

Download locations:

http://rt.et.redhat.com/download/
http://www.kernel.org/pub/linux/kernel/projects/rt/

Git release branch:

    git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/2.6.31-rc6

Git development branch:

    git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/head

Gitweb:

    http://git.kernel.org/?p=linux/kernel/git/tip/linux-2.6-tip.git;a=shortlog;h=rt/2.6.31-rc6

Information on the RT patch can be found at:

http://rt.wiki.kernel.org/index.php/Main_Page

to build the 2.6.31-rc6-rt4 tree, the following patches should be applied:

    http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.30.tar.bz2
    http://www.kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.31-rc6.bz2
    http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.31-rc6-rt4.bz2

Enjoy !

tglx

We are pleased to announce the next update to our new preempt-rt series.

- update to Linus' latest

- Fixed the Pseries mystery: missed to exclude per cpu timers from forced threading so the IPI handlers got threaded

- cgroup memcontrol preemption problem fixed

So the only known remaining one is ARM highmem

Download locations:

http://rt.et.redhat.com/download/
http://www.kernel.org/pub/linux/kernel/projects/rt/

Git release branch:

    git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/2.6.31-rc6

Git development branch:

    git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/head

Gitweb:

    http://git.kernel.org/?p=linux/kernel/git/tip/linux-2.6-tip.git;a=shortlog;h=rt/2.6.31-rc6

Information on the RT patch can be found at:

http://rt.wiki.kernel.org/index.php/Main_Page

to build the 2.6.31-rc6-rt5 tree, the following patches should be applied:

    http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.30.tar.bz2
    http://www.kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.31-rc6.bz2
    http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.31-rc6-rt5.bz2

Enjoy !

tglx

Hey Thomas, Peter, Ingo,
I'm still seeing the odd SMP scheduler behavior (where all the
processes line up on a single cpu) with -rt5. This can be easily reproduced with a "make -j8 bzImage". I'm I the only one seeing this?
Any suggestions on further debugging this?

thanks
-john

I am seeing it with 2.6.31-rcX-rtY kernels on both a 8 CPU AMD/Intel box Specjbb was returning pathetically low numbers which turns out to be because all threads are running on just one of the cpus

-Dinakar

We are pleased to announce the next update to our new preempt-rt series.

- update to Linus' latest

- load accounting/balancing fix (peterz)

As last time ARM highmem remains as unresolved.

Download locations:

http://rt.et.redhat.com/download/
http://www.kernel.org/pub/linux/kernel/projects/rt/

Git release branch:

    git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/2.6.31-rc6

Git development branch:

    git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/head

Gitweb:

    http://git.kernel.org/?p=linux/kernel/git/tip/linux-2.6-tip.git;a=shortlog;h=rt/2.6.31-rc6

Information on the RT patch can be found at:

http://rt.wiki.kernel.org/index.php/Main_Page

to build the 2.6.31-rc6-rt6 tree, the following patches should be applied:

    http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.30.tar.bz2
    http://www.kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.31-rc6.bz2
    http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.31-rc6-rt6.bz2

Enjoy !

tglx

<SNIP>

Hi Thomas,
Been awhile since I updated my kernel. Our Gentoo pro-audio overlay
seems to be dieing and the maintainers haven't been giving us many update options so I've been running 2.6.29.2-rt11 for quite a long time. I saw your announcement and thought I'd give this kernel a try by hand.

I had no problems downloading the code above and patching it as per
the rtWiki instructions. I grabbed a copy of my 2.6.29-rt11 .config file, did make oldconfig, then make menuconfig to check that things looked good. The build went fine and I installed the kernel. No problems so far.

Unfortunately when I tried to boot it the kernel is getting stuck
VERY early in the boot process looking for my hard drives. It waits for maybe 30-60 seconds looking for the drive and then says something like 'interrupt lost' or some other such thing.

If it continues I'll get the exact text but I'm wondering if there
are any places in the kernel config I should be looking for changes in how the basic kernel would handle finding drives? Did the driver config change at all? It is acting almost like the machine doesn't have any hard drives or CDs.

This is an AMD64 processor running on a 5 year old nVidia chipset.

I'm back in 2.6.29-rt11 for now.

I'll see about building just the 2.6.31 kernel as a test also.

Cheers,
Mark

lightning ~ # lspci
00:00.0 Memory controller: nVidia Corporation CK804 Memory Controller (rev a3) 00:01.0 ISA bridge: nVidia Corporation CK804 ISA Bridge (rev a3) 00:01.1 SMBus: nVidia Corporation CK804 SMBus (rev a2)
00:02.0 USB Controller: nVidia Corporation CK804 USB Controller (rev a2) 00:02.1 USB Controller: nVidia Corporation CK804 USB Controller (rev a3) 00:04.0 Multimedia audio controller: nVidia Corporation CK804 AC'97 Audio Controller (rev a2)
00:06.0 IDE interface: nVidia Corporation CK804 IDE (rev f2) 00:07.0 IDE interface: nVidia Corporation CK804 Serial ATA Controller (rev f3) 00:08.0 IDE interface: nVidia Corporation CK804 Serial ATA Controller (rev f3) 00:09.0 PCI bridge: nVidia Corporation CK804 PCI Bridge (rev a2) 00:0a.0 Bridge: nVidia Corporation CK804 Ethernet Controller (rev a3) 00:0b.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3) 00:0c.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3) 00:0d.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3) 00:0e.0 PCI bridge: nVidia Corporation CK804 PCIE Bridge (rev a3) 00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration 00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
01:00.0 VGA compatible controller: ATI Technologies Inc RV370 5B60 [Radeon X300 (PCIE)]
01:00.1 Display controller: ATI Technologies Inc RV370 [Radeon X300SE] 05:06.0 Multimedia audio controller: Xilinx Corporation RME Hammerfall DSP (rev 68)
05:08.0 FireWire (IEEE 1394): Texas Instruments TSB82AA2 IEEE-1394b Link Layer Controller (rev 01)
lightning ~ #
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We are pleased to announce the next update to our new preempt-rt series.

- update to Linus' latest

- perf counter crash fix (peterz)

- disabled MARKERS on RT. Code with no use(rs) which just causes trouble.

- edge irq forced threading fix. Fixes the IDE "interrupt lost" reports

Known issues:
- ARM highmem
- scheduler load balancing oddities. Peter is working on it.

Download locations:

http://rt.et.redhat.com/download/
http://www.kernel.org/pub/linux/kernel/projects/rt/

Git release branch:

    git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/2.6.31

Git development branch:

    git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/head

Gitweb:

     http://git.kernel.org/?p=linux/kernel/git/tip/linux-2.6-tip.git;a=shortlog;h=rt/2.6.31

Information on the RT patch can be found at:

http://rt.wiki.kernel.org/index.php/Main_Page

to build the 2.6.31-rc7-rt8 tree, the following patches should be applied:

    http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.30.tar.bz2
    http://www.kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.31-rc7.bz2
    http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.31-rc7-rt8.bz2

Enjoy !

tglx

Hi Thomas,

Here's one more atomic_spin_lock conversion for a driver update that went in for -rc7.

Kevin

From: Kevin Hilman <[email protected]>
Date: Thu, 27 Aug 2009 13:51:47 +0300
Subject: [PATCH -rt] MFD: twl4030: convert irq_desc lock to atomic spinlock

---
 drivers/mfd/twl4030-irq.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

index 7d43083..c1bc157 100644
@@ -458,12 +458,12 @@ static void twl4030_sih_do_edge(struct work_struct *work)
 
 		bytes[byte] &= ~(0x03 << off);
 
-		spin_lock_irq(&d->lock);
+		atomic_spin_lock_irq(&d->lock);
 		if (d->status & IRQ_TYPE_EDGE_RISING)
 			bytes[byte] |= BIT(off + 1);
 		if (d->status & IRQ_TYPE_EDGE_FALLING)
 			bytes[byte] |= BIT(off + 0);
-		spin_unlock_irq(&d->lock);
+		atomic_spin_unlock_irq(&d->lock);
 
 		edge_change &= ~BIT(i);
 	}

1.6.4

We are pleased to announce the next update to our new preempt-rt series.

- update to Linus' latest

- more perf counters rt education

- !RT build fix (jstultz)

- MFD rt fix (khilman)

Known issues:
- ARM highmem
- scheduler load balancing oddities. Peter is working on it.
- latency tracer oddities (latency tracers in combination with events). Steven is working on those

Give it a good testing. We aim for releasing a stable .31-rt in less than 24 hrs after Linus releases .31 :)

Download locations:

http://rt.et.redhat.com/download/
http://www.kernel.org/pub/linux/kernel/projects/rt/

Git release branch:

    git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/2.6.31

Git development branch:

    git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/head

Gitweb:

     http://git.kernel.org/?p=linux/kernel/git/tip/linux-2.6-tip.git;a=shortlog;h=rt/2.6.31

Information on the RT patch can be found at:

http://rt.wiki.kernel.org/index.php/Main_Page

to build the 2.6.31-rc8-rt9 tree, the following patches should be applied:

    http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.30.tar.bz2
    http://www.kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.31-rc8.bz2
    http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.31-rc8-rt9.bz2

Enjoy !

tglx

We are pleased to announce the next update to our new preempt-rt series.

- update to 2.6.31

- timekeeping 32bit overflow fix

- rt locking fix for rw_locks and rwsems. Solves a kvm crash

- kvm might sleep warning fix

- remove empty cpumask warning in x86(32bit) IPI code

- tracer fixes - picked from mainline

- perf counter fix - picked from mainline

Known issues:
- ARM highmem
- scheduler load balancing oddities. Peter is working on it.
- timer_interrupt hang check (fix queued for .31-rt11)

Pending updates:
- I'm planning to add back MIPS support in the .31-rt11 release.

Download locations:

http://rt.et.redhat.com/download/
http://www.kernel.org/pub/linux/kernel/projects/rt/

Git release branch:

    git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/2.6.31

Git development branch:

    git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/head

Gitweb:

     http://git.kernel.org/?p=linux/kernel/git/tip/linux-2.6-tip.git;a=shortlog;h=rt/2.6.31

Information on the RT patch can be found at:

http://rt.wiki.kernel.org/index.php/Main_Page

to build the 2.6.31-rt10 tree, the following patches should be applied:

    http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.31.tar.bz2
    http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.31-rt10.bz2

Enjoy !

tglx

Oops, forgot to mention that the latency histograms are back.

Thanks to Carsten Emde for keeping up with the ongoing changes in the tracer infrastructure.

tglx

We are pleased to announce the next update to our new preempt-rt series.

- latencytop fix

- disable SPARSE_IRQ, DMAR, IRQ_REMAP for -rt

Known issues:
- ARM highmem
- scheduler load balancing oddities. Peter is working on it.
- timer_interrupt hang check (still working on somthing useful)

The planned "add back MIPS support" is postponed to rt12.

Download locations:

http://rt.et.redhat.com/download/
http://www.kernel.org/pub/linux/kernel/projects/rt/

Git release branch:

    git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/2.6.31

Git development branch:

    git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/head

Gitweb:

    http://git.kernel.org/?p=linux/kernel/git/tip/linux-2.6-tip.git;a=shortlog;h=rt/2.6.31

Information on the RT patch can be found at:

http://rt.wiki.kernel.org/index.php/Main_Page

to build the 2.6.31-rt11 tree, the following patches should be applied:

    http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.31.tar.bz2
    http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.31-rt11.bz2

Enjoy !

tglx

Great work Tom. I am very glad to see -rt branch in -tip tree. When -rt will hit linus tree, .33 or .34 ?

Thanks,
--
JSR

Note, Thomas is German, not American. German's do not shorten their names like they do in America. Thus, his name is Thomas and not Tom.

We're working on it. But don't expect it that early. Our estimate is the same as we've said for the last 5 years. "It will be in next year".

-- Steve

Hello Steve,

Thanks for clarification. Now I understood why he started unnecessary wars and his funny actions(shouts when need to stay mum and stay mum when needs to speak) which leads to lot of confusions.

Great.

--
JSR

I hope you realize that this is in no way funny or amusing. I wouldn't normally make a deal out of it, but what you just said is offensive toward Thomas and you should apologize. Think before making such comments please - I bet you've never met Thomas, for if you had you'd know he's one of the nicest people around. That he is German should have no bearing and such comments are outmoded and wrong.

Jon.

Well said. +1

- Mark

Hitting a repeating BUG at boot on my Thinkpad T60p:

[    2.861699] BUG: sleeping function called from invalid context at kernel/rtmutex.c:684
[    2.861839] in_atomic(): 1, irqs_disabled(): 0, pid: 777, name: sleep
[    2.861967] Pid: 777, comm: sleep Not tainted 2.6.31-rc4-rt1-dvh01 #1
[    2.862092] Call Trace:
[    2.862217]  [<c012d881>] __might_sleep+0xe1/0x100
[    2.862343]  [<c056ccba>] rt_spin_lock+0x2a/0x70
[    2.862468]  [<c018243a>] res_counter_uncharge+0x2a/0x50
[    2.862593]  [<c01e6e23>] __mem_cgroup_uncharge_common+0x93/0x190
[    2.862720]  [<c01e6fb8>] mem_cgroup_uncharge_page+0x28/0x30
[    2.862845]  [<c01d6b87>] page_remove_rmap+0x47/0x50
[    2.862969]  [<c01cf2d9>] unmap_vmas+0x349/0x6b0
[    2.863093]  [<c01d45e5>] exit_mmap+0xc5/0x1c0
[    2.863217]  [<c0140481>] mmput+0x51/0xc0
[    2.863339]  [<c0146465>] exit_mm+0x105/0x140
[    2.863462]  [<c01465b5>] do_exit+0x115/0x760
[    2.863584]  [<c0146cc4>] sys_exit+0x14/0x20
[    2.863707]  [<c0103025>] syscall_call+0x7/0xb

I'm looking for a problem with preempt_disable() between LinuxCon seesions now. But if someone already knows the problem, thought I'd post.

Thanks,

Darren Hart
IBM Linux Technology Center
Real-Time Linux Team

I saw that (or something very similar) on my T60 a couple of versions back but thought it got fixed. Send me your .config, will you?

Clark

Ugh, nevermind, this was an -rc4 kernel. 2.6.31-rt11 does not see this problem.

Darren Hart
IBM Linux Technology Center
Real-Time Linux Team

Do you have any reports that there is a bug in the SPARSE_IRQ code or why did you disable it?

Thanks,
Jan
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Sparse irq is allocating memory in irq/preempt disabled regions which makes preempt debug pretty unhappy. It needs some restructuring of that code. dmar and irqremap have the same problem.

Thanks,

tglx

Is this with the patch I sent on Aug 31:
[PATCH] Allocate memory before disabling memory in irq_to_desc_alloc_node()

Thanks,
Jan
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Just a light workload and a couple boot tests so far, 2.6.31-rt11 appears to be running good on my powerpc64 systems. (power6 JS22 blades).

Thanks. :-)
-Will

We are pleased to announce the next update to our new preempt-rt series.

- Forward to 2.6.31.2
- Futex fix
- iptables fix

Download locations:

http://rt.et.redhat.com/download/
http://www.kernel.org/pub/linux/kernel/projects/rt/

Git release branch:

    git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/2.6.31

Git development branch:

    git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git rt/head

Gitweb:

    http://git.kernel.org/?p=linux/kernel/git/tip/linux-2.6-tip.git;a=shortlog;h=rt/2.6.31

Information on the RT patch can be found at:

http://rt.wiki.kernel.org/index.php/Main_Page

to build the 2.6.31.2-rt13 tree, the following patches should be applied:

    http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.31.2.tar.bz2
    http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.31.2-rt13.bz2

Enjoy !

tglx

Hi Thomas,

2009/10/6 Thomas Gleixner <[email protected]>:

Great!

But I was wondering if you missed this one:
http://patchwork.kernel.org/patch/50044/

Remy

Yup, slipped through. Queued for the next release.

Thanks,

tglx