linux-next: Tree for August 26

PATCH New Stephen Rothwell 6 participants 13 messages Aug 26, 2008 – Aug 28, 2008

Subsystems (7)

Networking Network drivers VFS PowerPC +3 more subsystems

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Stephen Rothwell

author

2008-08-26 08:40 UTC #0 lore raw

Hi all,

Changes since next-20080825:

I have added the following overnight build targets:
For xtensa: defconfig, allnoconfig, allmodconfig For parisc: defconfig, allnoconfig, allyesconfig For parisc64: a500_defconfig

Linus' tree gained a build fix patch (already added to his tree).

The usb.current tree lost its conflicts.

The usb tree lost its conflict.

The ftrace tree lost its revert and build fix and gained another patch to silence its over the top warnings.

The ide tree gained a build fix patch.

The kvm tree gained a conflicta against Linus' tree.

The sparseirq tree gained a build fix patch.

I have also applied the following patches for known problems:

Add cuImage.mpc866ads to the bootwrapper as a cuboot-8xx target
powerpc: export CMO_PageSize
ftrace: protect the definition of ftrace_release revert BUILD_BUG_ON change

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

I have created today's linux-next tree at
git://git.kernel.org/pub/scm/linux/kernel/git/sfr/linux-next.git
(patches at
http://www.kernel.org/pub/linux/kernel/people/sfr/linux-next/). If you are tracking the linux-next tree using git, you should not use "git pull" to do so as that will try to merge the new linux-next release with the old one. You should use "git fetch" as mentioned in the FAQ on the wiki (see below).

You can see which trees have been included by looking in the Next/Trees file in the source. There are also quilt-import.log and merge.log files in the Next directory. Between each merge, the tree was built with a ppc64_defconfig for powerpc and an allmodconfig for x86_64. After the final fixups, it is also built with powerpc allnoconfig, 44x_defconfig and allyesconfig and i386, sparc and sparc64 defconfig.

Below is a summary of the state of the merge.

We are up to 113 trees (counting Linus' and 14 trees of patches pending for Linus' tree), more are welcome (even if they are currently empty). Thanks to those who have contributed, and to those who haven't, please do.

Status of my local build tests will be at
http://kisskb.ellerman.id.au/linux-next . If maintainers want to give advice about cross compilers/configs that work, we are always open to add more builds.

Thanks to Jan Dittmer for adding the linux-next tree to his build tests at http://l4x.org/k/ , the guys at http://test.kernel.org/ and Randy Dunlap for doing many randconfig builds.

There is a wiki covering stuff to do with linux-next at
http://linux.f-seidel.de/linux-next/pmwiki/ . Thanks to Frank Seidel.

Signature · 173 lines

Cheers,
Stephen Rothwell                    [email protected]

$ git checkout master
$ git reset --hard stable
Merging origin/master
Applying ALSA: fix for CA0106 on MSI K8N Diamond PLUS Motherboard
Merging powerpc-merge/merge
Merging scsi-rc-fixes/master
Merging net-current/master
Merging sparc-current/master
Merging sound-current/for-linus
Merging arm-current/master
Merging pci-current/for-linus
Merging wireless-current/master
Merging kbuild-current/master
Merging quilt/driver-core.current
Merging quilt/usb.current
Merging cpufreq-current/fixes
Merging input-current/for-linus
Merging md-current/for-2.6.26
Merging dwmw2/master
Merging arm/devel
CONFLICT (content): Merge conflict in arch/arm/mach-pxa/include/mach/irqs.h
Merging avr32/avr32-arch
Merging blackfin/for-linus
Merging cris/for-next
Merging ia64/test
Merging quilt/m68k
Merging m68knommu/for-next
Merging mips/mips-for-linux-next
Merging parisc/master
Merging powerpc/powerpc-next
Merging 4xx/next
Merging galak/powerpc-next
Merging s390/features
Merging sh/master
Merging sparc/master
Merging xtensa/master
Merging quilt/driver-core
Merging quilt/usb
Merging tip-core/auto-core-next
Merging cpus4096/auto-cpus4096-next
Merging ftrace/auto-ftrace-next
CONFLICT (content): Merge conflict in kernel/module.c
Applying ftrace: silence overly verbose warning
Merging genirq/auto-genirq-next
Merging safe-poison-pointers/auto-safe-poison-pointers-next
Merging sched/auto-sched-next
Merging stackprotector/auto-stackprotector-next
CONFLICT (content): Merge conflict in kernel/fork.c
Merging timers/auto-timers-next
Merging x86/auto-x86-next
CONFLICT (content): Merge conflict in include/asm-x86/cpufeature.h
CONFLICT (content): Merge conflict in include/asm-x86/pda.h
Merging pci/linux-next
Merging quilt/device-mapper
Merging hid/mm
CONFLICT (content): Merge conflict in drivers/hid/usbhid/hid-core.c
CONFLICT (content): Merge conflict in drivers/hid/usbhid/hid-quirks.c
Applying HID: fix for warn() removal
Merging quilt/i2c
Merging quilt/jdelvare-hwmon
Merging quilt/kernel-doc
Merging v4l-dvb/stable
CONFLICT (content): Merge conflict in drivers/media/video/zr364xx.c
Merging jfs/next
Merging kbuild/master
Merging quilt/ide
Applying ide: fix for idefloppy_ioctl name change
Merging libata/NEXT
Merging nfs/linux-next
Merging xfs/master
Merging infiniband/for-next
Merging acpi/test
CONFLICT (content): Merge conflict in drivers/misc/acer-wmi.c
Merging nfsd/nfsd-next
Merging ieee1394/for-next
Merging ubi/linux-next
Merging kvm/master
CONFLICT (content): Merge conflict in include/asm-x86/kvm.h
CONFLICT (content): Merge conflict in include/linux/kvm.h
Merging dlm/next
Merging scsi/master
Merging tests/master
CONFLICT (content): Merge conflict in lib/Kconfig.debug
Merging ocfs2/linux-next
Merging ext4/next
Merging async_tx/next
Merging udf/for_next
Merging net/master
Merging mtd/master
Merging wireless/master
Merging crypto/master
CONFLICT (content): Merge conflict in include/asm-x86/cpufeature.h
Merging vfs/for-next
Merging sound/for-next
Merging cpufreq/next
Merging v9fs/for-next
Merging quilt/rr
Merging cifs/master
Merging mmc/next
Merging gfs2/master
Merging input/next
Merging semaphore/semaphore
Merging semaphore-removal/semaphore-removal
Merging bkl-removal/bkl-removal
Merging trivial/next
CONFLICT (content): Merge conflict in Documentation/edac.txt
CONFLICT (content): Merge conflict in include/linux/securebits.h
Merging ubifs/linux-next
Merging lsm/for-next
Merging block/for-next
Merging embedded/master
Merging firmware/master
Merging pcmcia/master
Merging battery/master
Merging leds/for-mm
Merging backlight/for-mm
Merging kgdb/kgdb-next
Merging slab/for-next
Merging uclinux/for-next
Merging md/for-next
Merging kmemcheck/auto-kmemcheck-next
CONFLICT (content): Merge conflict in MAINTAINERS
CONFLICT (content): Merge conflict in arch/x86/kernel/process_64.c
CONFLICT (content): Merge conflict in arch/x86/kernel/traps_64.c
CONFLICT (content): Merge conflict in init/main.c
CONFLICT (content): Merge conflict in mm/Makefile
CONFLICT (content): Merge conflict in mm/slab.c
CONFLICT (content): Merge conflict in mm/slub.c
Merging generic-ipi/auto-generic-ipi-next
Merging mfd/for-next
Merging hdlc/hdlc-next
Merging drm/drm-next
Merging voltage/reg-for-linus
Merging security-testing/next
Merging lblnet/master
Merging quilt/ttydev
CONFLICT (content): Merge conflict in Documentation/feature-removal-schedule.txt
CONFLICT (content): Merge conflict in drivers/char/tty_io.c
CONFLICT (content): Merge conflict in drivers/char/vt.c
CONFLICT (content): Merge conflict in drivers/net/usb/hso.c
CONFLICT (content): Merge conflict in drivers/usb/serial/aircable.c
CONFLICT (content): Merge conflict in drivers/usb/serial/keyspan_pda.c
CONFLICT (content): Merge conflict in drivers/usb/serial/safe_serial.c
Merging agp/agp-next
Merging creds/next-creds
CONFLICT (content): Merge conflict in fs/namespace.c
CONFLICT (content): Merge conflict in fs/nfsd/nfs4recover.c
CONFLICT (content): Merge conflict in fs/xfs/linux-2.6/xfs_linux.h
CONFLICT (content): Merge conflict in fs/xfs/xfs_inode.c
CONFLICT (content): Merge conflict in fs/xfs/xfs_vnodeops.c
CONFLICT (content): Merge conflict in include/linux/capability.h
CONFLICT (add/add): Merge conflict in include/linux/cred.h
CONFLICT (content): Merge conflict in kernel/exit.c
CONFLICT (content): Merge conflict in kernel/fork.c
CONFLICT (content): Merge conflict in security/commoncap.c
CONFLICT (content): Merge conflict in security/selinux/hooks.c
CONFLICT (content): Merge conflict in security/smack/smack_lsm.c
Merging oprofile/auto-oprofile-next
CONFLICT (content): Merge conflict in arch/x86/kernel/apic_32.c
Merging fastboot/auto-fastboot-next
CONFLICT (content): Merge conflict in include/linux/init.h
Merging sparseirq/auto-sparseirq-next
CONFLICT (content): Merge conflict in arch/x86/xen/spinlock.c
CONFLICT (content): Merge conflict in drivers/serial/68328serial.c
CONFLICT (content): Merge conflict in drivers/serial/8250.c
Applying sparseirq: build fix 1
Applying Add cuImage.mpc866ads to the bootwrapper as a cuboot-8xx target
Applying powerpc: export CMO_PageSize
Applying ftrace: protect the definition of ftrace_release
Applying revert BUILD_BUG_ON change

Kamalesh Babulal

2008-08-26 18:28 UTC #1 lore raw

[BUG] linux-next: Tree for August 26 - Badness at kernel/notifier.c:25

Hi Stephen,

Badness warning is seen, while booting up the next-20080825/26 kernels on the powerpc boxes

Badness at kernel/notifier.c:25
NIP: c000000000075bfc LR: c000000000075bf0 CTR: 0000000000000000
REGS: c000000000843a80 TRAP: 0700 Not tainted (2.6.27-rc4-next-20080826-autokern1)
MSR: 8000000000021032 <ME,IR,DR> CR: 44000082 XER: 00000000 TASK = c000000000762b40[0] 'swapper' THREAD: c000000000840000 CPU: 0
GPR00: c000000000075bf0 c000000000843d00 c000000000842148 0000000000000000
GPR04: c000000000763d28 c000000000634ae0 0000000020000000 0000000000000000
GPR08: 0000000000000000 ffffffffffffffff c0000000007f96f8 c0000000007f96f8
GPR12: 3330303030303033 c0000000008c4300 0000000000000000 c000000000636720
GPR16: 4000000002100000 c000000000634fb8 0000000000000000 0000000000246c00
GPR20: 0000000002819298 c000000000719298 0000000002819508 c000000000719508
GPR24: 0000000002c00000 c0000000006361d0 0000000000000000 0000000000000004
GPR28: 0000000000010000 c000000000763d28 c0000000007d72b0 c000000000763d20 NIP [c000000000075bfc] .notifier_chain_register+0x30/0x80
LR [c000000000075bf0] .notifier_chain_register+0x24/0x80

Call Trace:
[c000000000843d00] [c000000000075bf0] .notifier_chain_register+0x24/0x80 (unreliable)
[c000000000843d90] [c000000000037c04] .pSeries_reconfig_notifier_register+0x18/0x2c
[c000000000843e00] [c00000000003845c] .iommu_init_early_pSeries+0xe8/0x108
[c000000000843e70] [c0000000006f8954] .pSeries_init_early+0x68/0x80
[c000000000843ef0] [c0000000006ecd9c] .setup_system+0x204/0x398
[c000000000843f90] [c0000000000084fc] .start_here_common+0x2c/0xb0

Instruction dump:
7c0802a6 fba1ffe8 fbe1fff8 7c7f1b78 e8640000 7c9d2378 f8010010 f821ff71 4bff77c5 60000000 2fa30000 409e0020 <0fe00000> 48000030 801d0010 812b0010 console [udbg0] enabled
Partition configured for 8 cpus.
CPU maps initialized for 2 threads per core
Starting Linux PPC64 #1 SMP Tue Aug 26 12:55:19 EDT 2008
-----------------------------------------------------

ppc64_pft_size                = 0x19
physicalMemorySize            = 0x80000000
htab_hash_mask                = 0x3ffff
-----------------------------------------------------
Initializing cgroup subsys cpuset
------------[ cut here ]------------
Badness at kernel/notifier.c:25
NIP: c000000000075bfc LR: c000000000075bf0 CTR: c00000000009145c
REGS: c000000000843ac0 TRAP: 0700   Tainted: G        W  (2.6.27-rc4-next-20080826-autokern1)
MSR: 8000000000021032 <ME,IR,DR>  CR: 22000022  XER: 00000001

TASK = c000000000762b40[0] 'swapper' THREAD: c000000000840000 CPU: 0
GPR00: c000000000075bf0 c000000000843d40 c000000000842148 0000000000000000
GPR04: c00000000077f1a0 c00000000090bd00 c00000000074dc50 0000000000067430
GPR08: c0000000008bbc28 ffffffffffffffff c0000000007fef60 c0000000007fef60
GPR12: 0000000000367a5e c0000000008c4300 0000000000000000 c000000000636720
GPR16: 4000000002100000 c000000000634fb8 0000000000000000 0000000000246c00
GPR20: 0000000002819298 c000000000719298 0000000002819508 c000000000719508
GPR24: 0000000002c00000 c0000000006361d0 0000000000000000 c000000000000000
GPR28: 0000000001b5f8d4 c00000000077f1a0 c0000000007db098 c0000000009073f0 NIP [c000000000075bfc] .notifier_chain_register+0x30/0x80
LR [c000000000075bf0] .notifier_chain_register+0x24/0x80

Call Trace:
[c000000000843d40] [c000000000075bf0] .notifier_chain_register+0x24/0x80 (unreliable)
[c000000000843dd0] [c00000000007b200] .clockevents_register_notifier+0x3c/0x80
[c000000000843e60] [c0000000006fc41c] .tick_init+0x1c/0x34
[c000000000843ee0] [c0000000006e3600] .start_kernel+0x50/0x498
[c000000000843f90] [c00000000000850c] .start_here_common+0x3c/0xb0

Instruction dump:
7c0802a6 fba1ffe8 fbe1fff8 7c7f1b78 e8640000 7c9d2378 f8010010 f821ff71
4bff77c5 60000000 2fa30000 409e0020 <0fe00000> 48000030 801d0010 812b0010
Linux version 2.6.27-rc4-next-20080826-autokern1 ([email protected]) (gcc version 4.1.2 20071124 (Red Hat 4.1.2-42)) #1 SMP Tue Aug 26 12:55:19 EDT 2008 [boot]0012 Setup Arch

------------[ cut here ]------------
Badness at kernel/notifier.c:25
NIP: c000000000075bfc LR: c000000000075bf0 CTR: 8000000000f7cdec
REGS: c000000000843a20 TRAP: 0700   Tainted: G        W  (2.6.27-rc4-next-20080826-autokern1)
MSR: 8000000000021032 <ME,IR,DR>  CR: 22000022  XER: 00000001

TASK = c000000000762b40[0] 'swapper' THREAD: c000000000840000 CPU: 0
GPR00: c000000000075bf0 c000000000843ca0 c000000000842148 0000000000000000
GPR04: c000000000761c40 ffffffffffffffff 00000000000000c0 c0000000008c4298
GPR08: c0000000008c429c ffffffffffffffff c0000000007f72c0 c0000000007f72c0
GPR12: 0000000000368181 c0000000008c4300 0000000000000000 c000000000636720
GPR16: 4000000002100000 c000000000634fb8 0000000000000000 0000000000246c00
GPR20: 0000000002819298 c000000000719298 0000000002819508 c000000000719508
GPR24: 0000000002c00000 c0000000006361d0 0000000000000000 0000000000000000
GPR28: c0000000008dfe00 c000000000761c40 c0000000007d8970 c0000000008dfe08 NIP [c000000000075bfc] .notifier_chain_register+0x30/0x80
LR [c000000000075bf0] .notifier_chain_register+0x24/0x80

Call Trace:
[c000000000843ca0] [c000000000075bf0] .notifier_chain_register+0x24/0x80 (unreliable)
[c000000000843d30] [c00000000007600c] .atomic_notifier_chain_register+0x38/0x6c
[c000000000843dd0] [c0000000006efd68] .setup_panic+0x20/0x38
[c000000000843e50] [c0000000006ec920] .setup_arch+0x80/0x21c
[c000000000843ee0] [c0000000006e36a0] .start_kernel+0xf0/0x498
[c000000000843f90] [c00000000000850c] .start_here_common+0x3c/0xb0
Instruction dump:
7c0802a6 fba1ffe8 fbe1fff8 7c7f1b78 e8640000 7c9d2378 f8010010 f821ff71 
4bff77c5 60000000 2fa30000 409e0020 <0fe00000> 48000030 801d0010 812b0010 
------------[ cut here ]------------
Badness at kernel/notifier.c:25
NIP: c000000000075bfc LR: c000000000075bf0 CTR: 0000000000000001
REGS: c0000000008439d0 TRAP: 0700   Tainted: G        W  (2.6.27-rc4-next-20080826-autokern1)
MSR: 8000000000021032 <ME,IR,DR>  CR: 24000022  XER: 00000001

TASK = c000000000762b40[0] 'swapper' THREAD: c000000000840000 CPU: 0
GPR00: c000000000075bf0 c000000000843c50 c000000000842148 0000000000000000
GPR04: c00000000075f498 0000000000000000 c0000000008e0270 c00000000074d7d4
GPR08: 0000000000000002 ffffffffffffffff c0000000007f8980 c0000000007f8980
GPR12: 00000000000186a0 c0000000008c4300 0000000000000000 c000000000636720
GPR16: 4000000002100000 c000000000634fb8 0000000000000000 0000000000246c00
GPR20: 0000000002819298 c000000000719298 0000000002819508 c000000000719508
GPR24: 0000000002c00000 c0000000006361d0 c0000000030512c0 0000000004000000
GPR28: 0000000000000400 c00000000075f498 c0000000007d9ee8 c00000000075f4f8 NIP [c000000000075bfc] .notifier_chain_register+0x30/0x80
LR [c000000000075bf0] .notifier_chain_register+0x24/0x80

Call Trace:
[c000000000843c50] [c000000000075bf0] .notifier_chain_register+0x24/0x80 (unreliable)
[c000000000843ce0] [c0000000004d6240] .register_cpu_notifier+0x2c/0x54
[c000000000843d70] [c0000000006f6b00] .do_init_bootmem+0x7a8/0xb18
[c000000000843e50] [c0000000006eca48] .setup_arch+0x1a8/0x21c
[c000000000843ee0] [c0000000006e36a0] .start_kernel+0xf0/0x498
[c000000000843f90] [c00000000000850c] .start_here_common+0x3c/0xb0
Instruction dump:
7c0802a6 fba1ffe8 fbe1fff8 7c7f1b78 e8640000 7c9d2378 f8010010 f821ff71 
4bff77c5 60000000 2fa30000 409e0020 <0fe00000> 48000030 801d0010 812b0010 
------------[ cut here ]------------
Badness at kernel/notifier.c:25
NIP: c000000000075bfc LR: c000000000075bf0 CTR: 0000000000000000
REGS: c000000000843930 TRAP: 0700   Tainted: G        W  (2.6.27-rc4-next-20080826-autokern1)
MSR: 8000000000021032 <ME,IR,DR>  CR: 24000022  XER: 00000001

TASK = c000000000762b40[0] 'swapper' THREAD: c000000000840000 CPU: 0
GPR00: c000000000075bf0 c000000000843bb0 c000000000842148 0000000000000000
GPR04: c000000000761f90 c000000003056808 0000000020000001 0000000000000000
GPR08: c0000000007518d0 ffffffffffffffff c0000000007f7e90 c0000000007f7e90
GPR12: c000000000843b80 c0000000008c4300 0000000000000000 c000000000636720
GPR16: 4000000002100000 c000000000634fb8 0000000000000000 0000000000246c00
GPR20: 0000000002819298 c000000000719298 0000000002819508 c000000000719508
GPR24: 0000000002c00000 c0000000006361d0 0000000000000000 c000000000000000
GPR28: c00000007fff80c0 c000000000761f90 c0000000007d90b0 c000000000763d20 NIP [c000000000075bfc] .notifier_chain_register+0x30/0x80
LR [c000000000075bf0] .notifier_chain_register+0x24/0x80

Call Trace:
[c000000000843bb0] [c000000000075bf0] .notifier_chain_register+0x24/0x80 (unreliable)
[c000000000843c40] [c000000000037c04] .pSeries_reconfig_notifier_register+0x18/0x2c
[c000000000843cb0] [c0000000006f48b4] .pci_devs_phb_init+0x58/0x74
[c000000000843d30] [c0000000006edad4] .find_and_init_phbs+0xd8/0x130
[c000000000843dc0] [c0000000006f8470] .pSeries_setup_arch+0xf0/0x210
[c000000000843e50] [c0000000006eca88] .setup_arch+0x1e8/0x21c
[c000000000843ee0] [c0000000006e36a0] .start_kernel+0xf0/0x498
[c000000000843f90] [c00000000000850c] .start_here_common+0x3c/0xb0

Instruction dump:
7c0802a6 fba1ffe8 fbe1fff8 7c7f1b78 e8640000 7c9d2378 f8010010 f821ff71 4bff77c5 60000000 2fa30000 409e0020 <0fe00000> 48000030 801d0010 812b0010
EEH: No capable adapters found
PPC64 nvram contains 15360 bytes
Zone PFN ranges:
DMA 0x00000000 -> 0x00080000
Normal 0x00080000 -> 0x00080000
Movable zone start PFN for each node
early_node_map[2] active PFN ranges

    0: 0x00000000 -> 0x00044000
    1: 0x00044000 -> 0x00080000
[boot]0015 Setup Done
Built 2 zonelists in Node order, mobility grouping on.  Total pages: 517120
Policy zone: DMA
------------[ cut here ]------------
Badness at kernel/notifier.c:25
NIP: c000000000075bfc LR: c000000000075bf0 CTR: 8000000000f7cdec
REGS: c000000000843ac0 TRAP: 0700   Tainted: G        W  (2.6.27-rc4-next-20080826-autokern1)
MSR: 8000000000021032 <ME,IR,DR>  CR: 24000022  XER: 00000001

TASK = c000000000762b40[0] 'swapper' THREAD: c000000000840000 CPU: 0
GPR00: c000000000075bf0 c000000000843d40 c000000000842148 0000000000000000
GPR04: c00000000075f640 ffffffffffffffff 00000000000000b0 00000000001bb4f0
GPR08: 000000003b7d85d0 ffffffffffffffff c0000000008027b0 c0000000008027b0
GPR12: 00000000003697af c0000000008c4300 0000000000000000 c000000000636720
GPR16: 4000000002100000 c000000000634fb8 0000000000000000 0000000000246c00
GPR20: 0000000002819298 c000000000719298 0000000002819508 c000000000719508
GPR24: 0000000002c00000 c0000000006361d0 c0000000008d5918 c000000000716618
GPR28: c0000000008c1040 c00000000075f640 c0000000007d9ee8 c00000000075f4f8 NIP [c000000000075bfc] .notifier_chain_register+0x30/0x80
LR [c000000000075bf0] .notifier_chain_register+0x24/0x80

Call Trace:
[c000000000843d40] [c000000000075bf0] .notifier_chain_register+0x24/0x80 (unreliable)
[c000000000843dd0] [c0000000004d6240] .register_cpu_notifier+0x2c/0x54
[c000000000843e60] [c0000000006fefe8] .page_alloc_init+0x1c/0x34
[c000000000843ee0] [c0000000006e3784] .start_kernel+0x1d4/0x498
[c000000000843f90] [c00000000000850c] .start_here_common+0x3c/0xb0

the commit which introduced this warning is

commit 16f9b13de93c8bfdac16b4d15577af2c132358ef

Author: Arjan van de Ven <[email protected]>
Date:   Fri Aug 15 15:29:38 2008 -0700

debug: add notifier chain debugging

during some development we suspected a case where we left something in a notifier chain that was from a module that was unloaded already... and that sort of thing is rather hard to track down.

This patch adds a very simple sanity check (which isn't all that expensive) to make sure the notifier we're about to call is actually from either the kernel itself of from a still-loaded module, avoiding a hard-to-chase-down crash.

Signed-off-by Arjan van de Ven <[email protected]>

Signed-off-by Ingo Molnar <[email protected]>

kernel/notifier.c +4 -0

index 823be11..143fdd7 100644
@@ -21,6 +21,10 @@ BLOCKING_NOTIFIER_HEAD(reboot_notifier_list);
 static int notifier_chain_register(struct notifier_block **nl,
                struct notifier_block *n)
 {
+       if (!kernel_text_address((unsigned long)n->notifier_call)) {
+               WARN(1, "Invalid notifier registered!");
+               return 0;
+       }
        while ((*nl) != NULL) {
                if (n->priority > (*nl)->priority)
                        break;

<snip>

Signature · 4 lines

Thanks & Regards,
Kamalesh Babulal,
Linux Technology Center,
IBM, ISTL.

Arjan van de Ven

Acked-by Tony Luck

2008-08-26 20:22 UTC #2 lore raw

Re: [BUG] linux-next: Tree for August 26 - Badness at kernel/notifier.c:25

Quoted 4 lines · Kamalesh Babulal

Hi Stephen,
Badness warning is seen, while booting up the next-20080825/26 kernels on the powerpc boxes

this is fixed in the patch I sent to Ingo earlier today (attached again for reference)

Quoted 1 line

From eafa461d187448998b1f66c9134e66b125db9531 Mon Sep 17 00:00:00 2001

From: Arjan van de Ven <[email protected]>
Date: Tue, 26 Aug 2008 09:01:06 -0700
Subject: [PATCH] debug: add notifier chain debugging

during some development we suspected a case where we left something in a notifier chain that was from a module that was unloaded already... and that sort of thing is rather hard to track down.

Signed-off-by Arjan van de Ven <[email protected]>

Acked-by Tony Luck <[email protected]>

---
 include/linux/kernel.h |    3 +++
 kernel/extable.c       |   16 ++++++++++++++++
 kernel/notifier.c      |    6 ++++++
 lib/vsprintf.c         |    2 +-
 4 files changed, 26 insertions(+), 1 deletions(-)

include/linux/kernel.h +3 -0

index 2651f80..4e1366b 100644
@@ -187,6 +187,9 @@ extern unsigned long long memparse(char *ptr, char **retptr);
 extern int core_kernel_text(unsigned long addr);
 extern int __kernel_text_address(unsigned long addr);
 extern int kernel_text_address(unsigned long addr);
+extern int func_ptr_is_kernel_text(void *ptr);
+extern void *dereference_function_descriptor(void *ptr);
+
 struct pid;
 extern struct pid *session_of_pgrp(struct pid *pgrp);

kernel/extable.c +16 -0

index a26cb2e..adf0cc9 100644
@@ -66,3 +66,19 @@ int kernel_text_address(unsigned long addr)
 		return 1;
 	return module_text_address(addr) != NULL;
 }
+
+/*
+ * On some architectures (PPC64, IA64) function pointers
+ * are actually only tokens to some data that then holds the
+ * real function address. As a result, to find if a function
+ * pointer is part of the kernel text, we need to do some
+ * special dereferencing first.
+ */
+int func_ptr_is_kernel_text(void *ptr)
+{
+	unsigned long addr;
+	addr = (unsigned long) dereference_function_descriptor(ptr);
+	if (core_kernel_text(addr))
+		return 1;
+	return module_text_address(addr) != NULL;
+}

kernel/notifier.c +6 -0

index 823be11..522277c 100644
@@ -82,6 +82,12 @@ static int __kprobes notifier_call_chain(struct notifier_block **nl,
 
 	while (nb && nr_to_call) {
 		next_nb = rcu_dereference(nb->next);
+		if (!func_ptr_is_kernel_text(nb->notifier_call)) {
+			WARN(1, "Invalid notifier called!");
+			nb = next_nb;
+			continue;
+		}
+
 		ret = nb->notifier_call(nb, val, v);
 
 		if (nr_calls)

lib/vsprintf.c +1 -1

index d8d1d11..f5e5ffb 100644
@@ -513,7 +513,7 @@ static char *string(char *buf, char *end, char *s, int field_width, int precisio
 	return buf;
 }
 
-static inline void *dereference_function_descriptor(void *ptr)
+void *dereference_function_descriptor(void *ptr)
 {
 #if defined(CONFIG_IA64) || defined(CONFIG_PPC64)
 	void *p;

Signature · 1 line

1.5.5.1

Kamalesh Babulal

2008-08-27 11:12 UTC #3 lore raw

Re: [BUG] linux-next: Tree for August 26 - Badness at kernel/notifier.c:25

Quoted 96 lines · Arjan van de Ven

Quoted 5 lines · Kamalesh Babulal
Hi Stephen,
Badness warning is seen, while booting up the next-20080825/26 kernels on the powerpc boxes
this is fixed in the patch I sent to Ingo earlier today (attached again for reference)
------------------------------------------------------------------------
From eafa461d187448998b1f66c9134e66b125db9531 Mon Sep 17 00:00:00 2001
From: Arjan van de Ven <[email protected]>
Date: Tue, 26 Aug 2008 09:01:06 -0700
Subject: [PATCH] debug: add notifier chain debugging
during some development we suspected a case where we left something in a notifier chain that was from a module that was unloaded already... and that sort of thing is rather hard to track down.
This patch adds a very simple sanity check (which isn't all that expensive) to make sure the notifier we're about to call is actually from either the kernel itself of from a still-loaded module, avoiding a hard-to-chase-down crash.
Signed-off-by Arjan van de Ven <[email protected]>
Acked-by Tony Luck <[email protected]>
---
 include/linux/kernel.h |    3 +++
 kernel/extable.c       |   16 ++++++++++++++++
 kernel/notifier.c      |    6 ++++++
 lib/vsprintf.c         |    2 +-
 4 files changed, 26 insertions(+), 1 deletions(-)
include/linux/kernel.h +3 -0
index 2651f80..4e1366b 100644
@@ -187,6 +187,9 @@ extern unsigned long long memparse(char *ptr, char **retptr);
 extern int core_kernel_text(unsigned long addr);
 extern int __kernel_text_address(unsigned long addr);
 extern int kernel_text_address(unsigned long addr);
+extern int func_ptr_is_kernel_text(void *ptr);
+extern void *dereference_function_descriptor(void *ptr);
+
 struct pid;
 extern struct pid *session_of_pgrp(struct pid *pgrp);
 
kernel/extable.c +16 -0
index a26cb2e..adf0cc9 100644
@@ -66,3 +66,19 @@ int kernel_text_address(unsigned long addr)
 		return 1;
 	return module_text_address(addr) != NULL;
 }
+
+/*
+ * On some architectures (PPC64, IA64) function pointers
+ * are actually only tokens to some data that then holds the
+ * real function address. As a result, to find if a function
+ * pointer is part of the kernel text, we need to do some
+ * special dereferencing first.
+ */
+int func_ptr_is_kernel_text(void *ptr)
+{
+	unsigned long addr;
+	addr = (unsigned long) dereference_function_descriptor(ptr);
+	if (core_kernel_text(addr))
+		return 1;
+	return module_text_address(addr) != NULL;
+}
kernel/notifier.c +6 -0
index 823be11..522277c 100644
@@ -82,6 +82,12 @@ static int __kprobes notifier_call_chain(struct notifier_block **nl,
 
 	while (nb && nr_to_call) {
 		next_nb = rcu_dereference(nb->next);
+		if (!func_ptr_is_kernel_text(nb->notifier_call)) {
+			WARN(1, "Invalid notifier called!");
+			nb = next_nb;
+			continue;
+		}
+
 		ret = nb->notifier_call(nb, val, v);
 
 		if (nr_calls)
lib/vsprintf.c +0 -0
index d8d1d11..f5e5ffb 100644

lib/vsprintf.c static char *string(char *buf, char *end, char *s, int field_width, int precisio · line 519

Quoted 8 lines

lib/vsprintf.c +1 -1

@@ -513,7 +513,7 @@ static char *string(char *buf, char *end, char *s, int field_width, int precisio
 	return buf;
 }
 
-static inline void *dereference_function_descriptor(void *ptr)
+void *dereference_function_descriptor(void *ptr)
 {
 #if defined(CONFIG_IA64) || defined(CONFIG_PPC64)
 	void *p;

Thanks for reference of the patch, After replacing the patch with the latest one above on the powerpc, the warning still remains

Badness at kernel/notifier.c:86
NIP: c000000000081470 LR: c000000000081494 CTR: c00000000005a2d0
REGS: c0000021ce0bfaf0 TRAP: 0700 Not tainted (2.6.27-rc4-next-20080826-autotest)
MSR: 8000000000029032 <EE,ME,IR,DR> CR: 24008042 XER: 00000005 TASK = c0000015de080000[1] 'swapper' THREAD: c0000021ce0bc000 CPU: 0
GPR00: c000000000081494 c0000021ce0bfd70 c00000000081e940 c000000000749c38
GPR04: 0000000000000003 0000000000000001 ffffffffffffffff c0000021ce0bfe90
GPR08: ffffffffffffffff ffffffffffffffff c0000000004fd9f0 c0000000004fd9f0
GPR12: 0000000024000042 c00000000089c300 0000000002307ef0 c0000000006332a0
GPR16: c000000000631f28 c000000000633388 00000000018bf8b0 0000000002700000
GPR20: c00000000070b07c c000000000707ef0 c000000000708160 c000000000631c58
GPR24: 0000000000000003 0000000000000001 c0000021ce0bfe90 0000000000000000
GPR28: ffffffffffffffff c000000000749c20 c0000000007bf338 c000000000749c38 NIP [c000000000081470] .notifier_call_chain+0x70/0x140
LR [c000000000081494] .notifier_call_chain+0x94/0x140

Call Trace:
[c0000021ce0bfd70] [c000000000081494] .notifier_call_chain+0x94/0x140 (unreliable)
[c0000021ce0bfe20] [c0000000004fe3fc] .cpu_up+0x10c/0x200
[c0000021ce0bfee0] [c0000000006cdcc0] .kernel_init+0x1b0/0x440
[c0000021ce0bff90] [c0000000000299cc] .kernel_thread+0x4c/0x68

Instruction dump:
e8630000 2fa30000 419e00f0 2fa60000 419e00e8 2e270000 7c7f1b78 3b600000 48000028 60000000 60000000 60000000 <0fe00000> 2fbd0000 2f3c0000 7fbfeb78

Signature · 4 lines

Thanks & Regards,
Kamalesh Babulal,
Linux Technology Center,
IBM, ISTL.

Arjan van de Ven

2008-08-27 13:48 UTC #4 lore raw

Re: [BUG] linux-next: Tree for August 26 - Badness at kernel/notifier.c:25

Quoted 4 lines · Kamalesh Babulal

Thanks for reference of the patch, After replacing the patch with the latest one above on the powerpc, the warning still remains
Badness at kernel/notifier.c:86

sadly you have something going on that doesn't list the modules loaded etc...

is this during boot or way later?
(because if it's the later, you might be hitting a legitimate bug ;-)

Quoted 15 lines

NIP: c000000000081470 LR: c000000000081494 CTR: c00000000005a2d0
REGS: c0000021ce0bfaf0 TRAP: 0700 Not tainted (2.6.27-rc4-next-20080826-autotest)
MSR: 8000000000029032 <EE,ME,IR,DR> CR: 24008042 XER: 00000005
TASK = c0000015de080000[1] 'swapper' THREAD: c0000021ce0bc000 CPU: 0
GPR00: c000000000081494 c0000021ce0bfd70 c00000000081e940 c000000000749c38 GPR04: 0000000000000003 0000000000000001 ffffffffffffffff c0000021ce0bfe90 GPR08: ffffffffffffffff ffffffffffffffff c0000000004fd9f0 c0000000004fd9f0 GPR12: 0000000024000042 c00000000089c300 0000000002307ef0 c0000000006332a0 GPR16: c000000000631f28 c000000000633388 00000000018bf8b0 0000000002700000 GPR20: c00000000070b07c c000000000707ef0 c000000000708160 c000000000631c58 GPR24: 0000000000000003 0000000000000001 c0000021ce0bfe90 0000000000000000 GPR28: ffffffffffffffff c000000000749c20 c0000000007bf338 c000000000749c38 NIP [c000000000081470] .notifier_call_chain+0x70/0x140 LR [c000000000081494] .notifier_call_chain+0x94/0x140
Call Trace:
[c0000021ce0bfd70] [c000000000081494] .notifier_call_chain+0x94/0x140 (unreliable)
[c0000021ce0bfe20] [c0000000004fe3fc] .cpu_up+0x10c/0x200
[c0000021ce0bfee0] [c0000000006cdcc0] .kernel_init+0x1b0/0x440
[c0000021ce0bff90] [c0000000000299cc] .kernel_thread+0x4c/0x68
Instruction dump:
e8630000 2fa30000 419e00f0 2fa60000 419e00e8 2e270000 7c7f1b78 3b600000 48000028 60000000 60000000 60000000 <0fe00000> 2fbd0000 2f3c0000 7fbfeb78

Stephen Rothwell

author

2008-08-27 14:33 UTC #5 lore raw

Re: [BUG] linux-next: Tree for August 26 - Badness at kernel/notifier.c:25

Hi Arjan,

Quoted 6 lines · On Wed, 27 Aug 2008 06:48:06 -0700 Arjan van de Ven <[email protected]>…

Quoted 4 lines · Kamalesh Babulal
Thanks for reference of the patch, After replacing the patch with the latest one above on the powerpc, the warning still remains

Quoted 6 lines

Quoted 1 line
Badness at kernel/notifier.c:86
sadly you have something going on that doesn't list the modules loaded etc...
is this during boot or way later?
(because if it's the later, you might be hitting a legitimate bug ;-)

The original reported trace was during setup_system which is very early in the boot.

Signature · 3 lines

Cheers,
Stephen Rothwell                    [email protected]
http://www.canb.auug.org.au/~sfr/

Stephen Rothwell

author

2008-08-27 14:38 UTC #6 lore raw

Re: [BUG] linux-next: Tree for August 26 - Badness at kernel/notifier.c:25

Hi Arjan,

Quoted 3 lines · On Thu, 28 Aug 2008 00:33:08 +1000 Stephen Rothwell <[email protected]>…

The original reported trace was during setup_system which is very early in the boot.

But, of course, that version didn't have the necessary extra dereference of the function address ...

And the later debug patch did not check the address at register time, only at notify time.

The later trace also looks to be early in the boot.

Signature · 3 lines

Cheers,
Stephen Rothwell                    [email protected]
http://www.canb.auug.org.au/~sfr/

David Woodhouse

2008-08-28 14:23 UTC #7 lore raw

Re: [BUG] linux-next: Tree for August 26 - Badness at kernel/notifier.c:25

Quoted 7 lines · Stephen Rothwell

Hi Arjan,
Quoted 3 lines · On Thu, 28 Aug 2008 00:33:08 +1000 Stephen Rothwell <[email protected]>…
The original reported trace was during setup_system which is very early in the boot.

Quoted 7 lines

But, of course, that version didn't have the necessary extra dereference of the function address ...
And the later debug patch did not check the address at register time, only at notify time.
The later trace also looks to be early in the boot.

It's isa_bridge_notify(), which is neither within _[se]text nor _[se]inittext, so the core_kernel_text() function disavows it.

Where are __devinit functions supposed to end up?

 $ egrep _[es]init\|_[es]text\|isa_bridge_notify System.map 
c000000000000000 T _stext
c00000000045d000 T _etext
c000000000463ca8 t .isa_bridge_notify
c00000000063a000 T _sinittext
c00000000067c3bc T _einittext
c00000000071fd80 d isa_bridge_notify

Signature · 2 lines

David Woodhouse                            Open Source Technology Centre
[email protected]                              Intel Corporation

David Woodhouse

2008-08-28 14:58 UTC #8 lore raw

Re: [BUG] linux-next: Tree for August 26 - Badness at kernel/notifier.c:25

Quoted 14 lines · David Woodhouse

Quoted 13 lines · Stephen Rothwell
Hi Arjan,
Quoted 3 lines · On Thu, 28 Aug 2008 00:33:08 +1000 Stephen Rothwell <[email protected]>…
The original reported trace was during setup_system which is very early in the boot.
But, of course, that version didn't have the necessary extra dereference of the function address ...
And the later debug patch did not check the address at register time, only at notify time.

Quoted 6 lines

Quoted 1 line
The later trace also looks to be early in the boot.
It's isa_bridge_notify(), which is neither within _[se]text nor _[se]inittext, so the core_kernel_text() function disavows it.
Where are __devinit functions supposed to end up?

The TEXT_TEXT macro defined in <asm-generic/vmlinux.lds.h> should get this right... but we don't use it. Is there any particular reason for that, or should we....

Signed-off-by David Woodhouse <[email protected]>

arch/powerpc/kernel/vmlinux.lds.S renamed from arch/powerpc/kernel/vmlinux.lds.S~ +2 -1

@@ -35,10 +35,11 @@ SECTIONS
 		ALIGN_FUNCTION();
 		*(.text.head)
 		_text = .;
-		*(.text .fixup .text.init.refok .exit.text.refok)
+		TEXT_TEXT
 		SCHED_TEXT
 		LOCK_TEXT
 		KPROBES_TEXT
+		*(.fixup)
 
 #ifdef CONFIG_PPC32
 		*(.got1)

Signature · 2 lines

David Woodhouse                            Open Source Technology Centre
[email protected]                              Intel Corporation

Milton Miller

2008-08-28 17:14 UTC #9 lore raw

Re: [BUG] linux-next: Tree for August 26 - Badness at kernel/notifier.c:25

David Woodhouse dwmw2 at infradead.org
Fri Aug 29 00:55:07 EST 2008

Quoted 17 lines · David Woodhouse

Quoted 16 lines · Stephen Rothwell
Quoted 14 lines
Hi Arjan,
Quoted 3 lines · On Thu, 28 Aug 2008 00:33:08 +1000 Stephen Rothwell <sfr at canb.auug.org.au>…
The original reported trace was during setup_system which is very early in the boot.
But, of course, that version didn't have the necessary extra dereference of the function address ...
And the later debug patch did not check the address at register time, only at notify time.
The later trace also looks to be early in the boot.

Quoted 8 lines

Quoted 4 lines
It's isa_bridge_notify(), which is neither within _[se]text nor _[se]inittext, so the core_kernel_text() function disavows it.
Where are __devinit functions supposed to end up?
The TEXT_TEXT macro defined in <asm-generic/vmlinux.lds.h> should get this right... but we don't use it. Is there any particular reason for that, or should we....

gitk -- arch/powerpc/kernel/vmlinux.S

e95c91821fa56b489d7beb74103a419466c5ec10 [POWERPC] Fix link errors for allyesconfig

An allyesconfig build creates a .text section that is so big that the .text.init.refok and .fixup sections are too far away for the relocations to be fixed up correctly. This patch fixes that by linking all the relevent text sections for each file together.

Suggested by Paul Mackerras.

Signed-off-by Stephen Rothwell <[email protected]>

Signed-off-by Paul Mackerras <[email protected]>

Although I think its really fac23fe4be23259a8eaa9bad822f5b14dd07d15c
powerpc: Introduce infrastructure for feature sections with alternatives that causes the problems.

If the problem is only reaching the branch-out-of-fixup-section, then we could create a macro that caculates the branch as if it were already at the destination address (using something like

b (target-fixup_start)-(current-alternative_start)

and then removing the code that determines the branch target goes beyond the feature section.

Just a concept, have't tried it yet and don't know if there are other problems with .text.init.refok.

Or we fix our defintion and put a comment next to TEXT_TEXT that we don't use it for future editors.

Quoted 22 lines

Signed-off-by David Woodhouse <David.Woodhouse at intel.com>

arch/powerpc/kernel/vmlinux.lds.S renamed from arch/powerpc/kernel/vmlinux.lds.S~ +2 -1

@@ -35,10 +35,11 @@ SECTIONS
 		ALIGN_FUNCTION();
 		*(.text.head)
 		_text = .;
-		*(.text .fixup .text.init.refok .exit.text.refok)
+		TEXT_TEXT
 		SCHED_TEXT
 		LOCK_TEXT
 		KPROBES_TEXT
+		*(.fixup)
 
 #ifdef CONFIG_PPC32
 		*(.got1)

Signature · 3 lines

-- 
David Woodhouse                            Open Source Technology Centre
David.Woodhouse at intel.com                              Intel Corporation

Kamalesh Babulal

2008-08-27 17:52 UTC #10 lore raw

Re: [BUG] linux-next: Tree for August 26 - Badness at kernel/notifier.c:25

In reply to Arjan van de Ven

Quoted 4 lines · Arjan van de Ven

Quoted 3 lines · Kamalesh Babulal
Thanks for reference of the patch, After replacing the patch with the latest one above on the powerpc, the warning still remains

Quoted 30 lines

Quoted 1 line
Badness at kernel/notifier.c:86
sadly you have something going on that doesn't list the modules loaded etc...
is this during boot or way later?
(because if it's the later, you might be hitting a legitimate bug ;-)
Quoted 23 lines
NIP: c000000000081470 LR: c000000000081494 CTR: c00000000005a2d0
REGS: c0000021ce0bfaf0 TRAP: 0700 Not tainted (2.6.27-rc4-next-20080826-autotest)
MSR: 8000000000029032 <EE,ME,IR,DR> CR: 24008042 XER: 00000005 TASK = c0000015de080000[1] 'swapper' THREAD: c0000021ce0bc000 CPU: 0
GPR00: c000000000081494 c0000021ce0bfd70 c00000000081e940 c000000000749c38
GPR04: 0000000000000003 0000000000000001 ffffffffffffffff c0000021ce0bfe90
GPR08: ffffffffffffffff ffffffffffffffff c0000000004fd9f0 c0000000004fd9f0
GPR12: 0000000024000042 c00000000089c300 0000000002307ef0 c0000000006332a0
GPR16: c000000000631f28 c000000000633388 00000000018bf8b0 0000000002700000
GPR20: c00000000070b07c c000000000707ef0 c000000000708160 c000000000631c58
GPR24: 0000000000000003 0000000000000001 c0000021ce0bfe90 0000000000000000
GPR28: ffffffffffffffff c000000000749c20 c0000000007bf338 c000000000749c38 NIP [c000000000081470] .notifier_call_chain+0x70/0x140
LR [c000000000081494] .notifier_call_chain+0x94/0x140
Call Trace:
[c0000021ce0bfd70] [c000000000081494] .notifier_call_chain+0x94/0x140 (unreliable)
[c0000021ce0bfe20] [c0000000004fe3fc] .cpu_up+0x10c/0x200
[c0000021ce0bfee0] [c0000000006cdcc0] .kernel_init+0x1b0/0x440
[c0000021ce0bff90] [c0000000000299cc] .kernel_thread+0x4c/0x68
Instruction dump:
e8630000 2fa30000 419e00f0 2fa60000 419e00e8 2e270000 7c7f1b78 3b600000 48000028 60000000 60000000 60000000 <0fe00000> 2fbd0000 2f3c0000 7fbfeb78

This is during the bootup
Welcome to yaboot version 1.3.12
Enter "help" to get some basic usage information
boot: autotest
Please wait, loading kernel...
Elf64 kernel loaded...
Loading ramdisk...
ramdisk loaded at 02700000, size: 846 Kbytes
OF stdout device is: /vdevice/vty@30000000 Hypertas detected, assuming LPAR !
command line: root=/dev/sda6 console=hvc0 IDENT=1219851195 memory layout at init:
alloc_bottom : 00000000027d4000
alloc_top : 0000000008000000
alloc_top_hi : 0000000100000000
rmo_top : 0000000008000000
ram_top : 0000000100000000
Looking for displays
instantiating rtas at 0x00000000076a1000 ... done boot cpu hw idx 0000000000000000
starting cpu hw idx 0000000000000002... done copying OF device tree ...
Building dt strings...
Building dt structure...
Device tree strings 0x00000000028d5000 -> 0x00000000028d637a Device tree struct 0x00000000028d7000 -> 0x00000000028df000 Calling quiesce ...
returning from prom_init
Using pSeries machine description
Found initrd at 0xc000000002700000:0xc0000000027d3800 console [udbg0] enabled
Partition configured for 4 cpus.
CPU maps initialized for 2 threads per core Starting Linux PPC64 #1 SMP Wed Aug 27 11:25:24 EDT 2008
-----------------------------------------------------

ppc64_pft_size                = 0x1a
physicalMemorySize            = 0x100000000
htab_hash_mask                = 0x7ffff

-----------------------------------------------------
Initializing cgroup subsys cpuset
Linux version 2.6.27-rc4-next-20080826-autotest ([email protected]) (gcc version 3.4.6 20060404 (Red Hat 3.4.6-3)) #1 SMP Wed Aug 27 11:25:24 EDT 2008 [boot]0012 Setup Arch
PCI host bridge /pci@800000020000002 ranges:
IO 0x000003fe00600000..0x000003fe006fffff -> 0x0000000000000000
MEM 0x0000040100000000..0x000004017fffffff -> 0x0000000080000000
EEH: PCI Enhanced I/O Error Handling Enabled
PPC64 nvram contains 7168 bytes
Zone PFN ranges:
DMA 0x00000000 -> 0x00100000
Normal 0x00100000 -> 0x00100000
Movable zone start PFN for each node
early_node_map[1] active PFN ranges

    0: 0x00000000 -> 0x00100000

[boot]0015 Setup Done
Built 1 zonelists in Node order, mobility grouping on. Total pages: 1034240
Policy zone: DMA
Kernel command line: root=/dev/sda6 console=hvc0 IDENT=1219851195
[boot]0020 XICS Init
[boot]0021 XICS Done
PID hash table entries: 4096 (order: 12, 32768 bytes)
clocksource: timebase mult[10cd746] shift[22] registered
Console: colour dummy device 80x25
console handover: boot [udbg0] -> real [hvc0]
Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes)
Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes)
freeing bootmem node 0
Memory: 4101404k/4194304k available (7536k kernel code, 92900k reserved, 1108k data, 604k bss, 300k init)
SLUB: Genslabs=13, HWalign=128, Order=0-3, MinObjects=0, CPUs=4, Nodes=16
Calibrating delay loop... 475.13 BogoMIPS (lpj=950272)
Mount-cache hash table entries: 256
Initializing cgroup subsys ns
Initializing cgroup subsys cpuacct

------------[ cut here ]------------
Badness at kernel/notifier.c:86
NIP: c00000000050228c LR: c000000000502274 CTR: c000000000054ffc
REGS: c0000000fe06bb10 TRAP: 0700   Not tainted  (2.6.27-rc4-next-20080826-autotest)
MSR: 8000000000029032 <EE,ME,IR,DR>  CR: 44000082  XER: 00000004

TASK = c0000000fe060000[1] 'swapper' THREAD: c0000000fe068000 CPU: 0
GPR00: c000000000502274 c0000000fe06bd90 c000000000873748 c000000000791220
GPR04: 0000000000000003 0000000000000001 ffffffffffffffff c0000000fe06beb0
GPR08: c0000000005075cc c00000000077e0c8 c0000000005075cc c0000000fe068000
GPR12: c0000000008f8300 c0000000008f8300 0000000000000000 0000000000000000
GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
GPR20: 0000000000230000 0000000000000000 00000000000d3800 4000000001c00000
GPR24: 0000000000000003 0000000000000001 c0000000fe06beb0 0000000000000000
GPR28: ffffffffffffffff c000000000791208 c00000000080bdc0 c000000000791220 NIP [c00000000050228c] .notifier_call_chain+0x8c/0x138
LR [c000000000502274] .notifier_call_chain+0x74/0x138

Call Trace:
[c0000000fe06bd90] [c000000000502274] .notifier_call_chain+0x74/0x138 (unreliable)
[c0000000fe06be40] [c000000000507ea0] .cpu_up+0xec/0x204
[c0000000fe06bf00] [c000000000711c58] .kernel_init+0x158/0x384
[c0000000fe06bf90] [c0000000000269a4] .kernel_thread+0x4c/0x68
Instruction dump:
7d2b0038 2c0b0000 418200a4 e87f0000 ebbf0008 4bb6eaf1 60000000 7f04c378 
7f25cb78 2fa30000 7fe3fb78 409e0010 <0fe00000> 7fbfeb78 48000050 e93f0000 
------------[ cut here ]------------
Badness at kernel/notifier.c:86

.
.
.
<snip Badness at kernel/notifier.c:86 9 times>
.
.
.

------------[ cut here ]------------
Badness at kernel/notifier.c:86
NIP: c00000000050228c LR: c000000000502274 CTR: 80000000001af404
REGS: c0000000fe06bb10 TRAP: 0700   Tainted: G        W  (2.6.27-rc4-next-20080826-autotest)
MSR: 8000000000029032 <EE,ME,IR,DR>  CR: 42000022  XER: 00000004

TASK = c0000000fe060000[1] 'swapper' THREAD: c0000000fe068000 CPU: 0
GPR00: c000000000502274 c0000000fe06bd90 c000000000873748 c000000000791220
GPR04: 0000000000000002 0000000000000001 ffffffffffffffff 0000000000000000
GPR08: c0000000005075cc c00000000077e0c8 c0000000005075cc c0000000fe068000
GPR12: 0000000000004000 c0000000008f8300 0000000000000000 0000000000000000
GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
GPR20: 0000000000230000 <1>Unable to handle kernel paging request for data at address 0xffffffffffffffe8 Faulting instruction address: 0xc000000000077fa0

Oops: Kernel access of bad area, sig: 11 [#1]
SMP NR_CPUS=128 NUMA pSeries
Modules linked in:
NIP: c000000000077fa0 LR: c000000000077f84 CTR: c000000000066110
REGS: c00000000fff7af0 TRAP: 0300   Tainted: G        W  (2.6.27-rc4-next-20080826-autotest)
MSR: 8000000000009032 <EE,ME,IR,DR>  CR: 28000044  XER: 00000000
DAR: ffffffffffffffe8, DSISR: 0000000040010000

TASK = c0000000fe061160[0] 'swapper' THREAD: c0000000fe080000 CPU: 1
GPR00: c000000000077f84 c00000000fff7d70 c000000000873748 c0000000009b0b70
GPR04: 0000000000000018 0000000000000002 0000000000000000 c000000000759088
GPR08: c00000000088a380 0000000000000000 0000000000000056 c00000000088a380
GPR12: 0000000048000044 c0000000008f8500 0000000000000000 000000000796a428
GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000003
GPR24: 0000000000000001 c0000000009b0c18 c0000000009b0b70 0000000000000000
GPR28: 0000000000000001 c00000000088a188 c00000000080c168 ffffffffffffffc0 NIP [c000000000077fa0] .run_hrtimer_pending+0x4c/0x1c0
LR [c000000000077f84] .run_hrtimer_pending+0x30/0x1c0

Call Trace:
[c00000000fff7d70] [c000000000077f84] .run_hrtimer_pending+0x30/0x1c0 (unreliable)
[c00000000fff7e20] [c00000000006614c] .run_timer_softirq+0x3c/0x288
[c00000000fff7ef0] [c00000000005f9b4] .__do_softirq+0xac/0x16c
[c00000000fff7f90] [c0000000000267e8] .call_do_softirq+0x14/0x24
[c0000000fe0839b0] [c00000000000cd58] .do_softirq+0x94/0x104
[c0000000fe083a50] [c00000000005fb84] .irq_exit+0x70/0xcc
[c0000000fe083ad0] [c00000000002352c] .timer_interrupt+0xe0/0x10c
[c0000000fe083b60] [c000000000003700] decrementer_common+0x100/0x180
--- Exception: 901 at .raw_local_irq_restore+0x3c/0x40
    LR = .cpu_idle+0x12c/0x200
[c0000000fe083e50] [c000000000012fa8] .cpu_idle+0x120/0x200 (unreliable)
[c0000000fe083ed0] [c000000000509e34] .start_secondary+0x364/0x3a0
[c0000000fe083f90] [c000000000008364] .start_secondary_prolog+0xc/0x10
Instruction dump:
fbe1fff8 3b3a00a8 f8010010 f821ff51 48487a05 60000000 eb7a00a8 7fbbc800 
419e012c 3bfbffc0 38a00002 38c00000 <e89f0028> 7fe3fb78 ebbf0020 4bfff925 
Kernel panic - not syncing: Fatal exception in interrupt
Call Trace:
[c00000000fff7810] [c0000000000114b0] .show_stack+0x6c/0x194 (unreliable)
[c00000000fff78c0] [c000000000058994] .panic+0x74/0x1cc
[c00000000fff7950] [c000000000024a84] .die+0x248/0x28c
[c00000000fff7a00] [c00000000002c7b0] .bad_page_fault+0xb8/0xd4
[c00000000fff7a80] [c000000000005218] handle_page_fault+0x3c/0x5c
--- Exception: 300 at .run_hrtimer_pending+0x4c/0x1c0
    LR = .run_hrtimer_pending+0x30/0x1c0
[c00000000fff7e20] [c00000000006614c] .run_timer_softirq+0x3c/0x288
[c00000000fff7ef0] [c00000000005f9b4] .__do_softirq+0xac/0x16c
[c00000000fff7f90] [c0000000000267e8] .call_do_softirq+0x14/0x24
[c0000000fe0839b0] [c00000000000cd58] .do_softirq+0x94/0x104
[c0000000fe083a50] [c00000000005fb84] .irq_exit+0x70/0xcc
[c0000000fe083ad0] [c00000000002352c] .timer_interrupt+0xe0/0x10c
[c0000000fe083b60] [c000000000003700] decrementer_common+0x100/0x180
--- Exception: 901 at .raw_local_irq_restore+0x3c/0x40
    LR = .cpu_idle+0x12c/0x200
[c0000000fe083e50] [c000000000012fa8] .cpu_idle+0x120/0x200 (unreliable)
[c0000000fe083ed0] [c000000000509e34] .start_secondary+0x364/0x3a0
[c0000000fe083f90] [c000000000008364] .start_secondary_prolog+0xc/0x10
------------[ cut here ]------------
Badness at kernel/smp.c:290
NIP: c00000000008595c LR: c000000000085b3c CTR: 0000000000000000
REGS: c00000000fff7410 TRAP: 0700   Tainted: G      D W  (2.6.27-rc4-next-20080826-autotest)
MSR: 8000000000021032 <ME,IR,DR>  CR: 22000024  XER: 00000000

TASK = c0000000fe061160[0] 'swapper' THREAD: c0000000fe080000 CPU: 1 f2e10] [c00000000002c7b0] .bad_page_fault+0xb8/0xd4 [c00000000fff2e90] [c000000000005218] handle_page_fault+0x3c/0x5c --- Exception: 300 at .kmem_cache_alloc+0x44/0xdc

    LR = .smp_call_function_single+0xbc/0x118

[c00000000fff3180] [c000000000085960] .smp_call_function_mask+0x60/0x208 (unreliable) [c00000000fff3220] [c00000000008587c] .smp_call_function_single+0xbc/0x118 [c00000000fff3310] [c000000000085a0c] .smp_call_function_mask+0x10c/0x208 [c00000000fff3440] [c000000000085b3c] .smp_call_function+0x34/0x48 [c00000000fff34c0] [c000000000028848] .smp_send_stop+0x24/0x3c [c00000000fff3540] [c0000000000589b4] .panic+0x94/0x1cc [c00000000fff35d0] [c000000000024a84] .die+0x248/0x28c [c00000000fff3680] [c00000000002c7b0] .bad_page_fault+0xb8/0xd4 [c00000000fff3700] [c000000000005218] handle_page_fault+0x3c/0x5c
--- Exception: 300 at .kmem_cache_alloc+0x44/0xdc

    LR = .smp_call_function_single+0xbc/0x118

[c00000000fff39f0] [c000000000085960] .smp_call_function_mask+0x60/0x208 (unreliable) [c00000000fff3a90] [c00000000008587c] .smp_call_function_single+0xbc/0x118 [c00000000fff3b80] [c000000000085a0c] .smp_call_function_mask+0x10c/0x208 [c00000000fff3cb0] [c000000000085b3c] .smp_call_function+0x34/0x48 [c00000000fff3d30] [c000000000028848] .smp_send_stop+0x24/0x3c [c00000000fff3db0] [c0000000000589b4] .panic+0x94/0x1cc [c00000000fff3e40] [c000000000024a84] .die+0x248/0x28c [c00000000fff3ef0] [c00000000002c7b0] .bad_page_fault+0xb8/0xd4 [c00000000fff3f70] [c000000000005218] handle_page_fault+0x3c/0x5c

------------[ cut here ]------------
Badness at kernel/smp.c:290
NIP: c00000000008595c LR: c000000000085b3c CTR: 0000000000000000
REGS: c00000000fff2820 TRAP: 0700   Tainted: G      D W  (2.6.27-rc4-next-20080826-autotest)
MSR: 8000000000021032 <ME,IR,DR>  CR: 22000024  XER: 00000000

TASK = c0000000fe061160[0] 'swapper' THREAD: c0000000fe080000 CPU: 1
GPR00: 0000000000000001 c00000000fff2aa0 c000000000873748 0000000000000003
GPR04: 0000000000000000 c000000000828930 0000000000000000 0000000000000000
GPR08: c00000000fff4260 0000000000000000 0000000000000001 0000000000000001
GPR12: 0000000022000082 c0000000008f8500 0000000000000000 000000000796a428
GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000003
GPR24: 0000000000000001 000000000000000b 0000000000000000 c000000000828930
GPR28: 0000000000000000 c0000000006626b0 c00000000080d0e8 0000000000000000 NIP [c00000000008595c] .smp_call_function_mask+0x5c/0x208
LR [c000000000085b3c] .smp_call_function+0x34/0x48

Call Trace:
[c00000000fff2aa0] [c000000000059cdc] .try_acquire_console_sem+0x1c/0x5c (unreliable)
[c00000000fff2bd0] [c000000000085b3c] .smp_call_function+0x34/0x48
[c00000000fff2c50] [c000000000028848] .smp_send_stop+0x24/0x3c
[c00000000fff2cd0] [c0000000000589b4] .panic+0x94/0x1cc
[c00000000fff2d60] [c000000000024a84] .die+0x248/0x28c
[c00000000fff2e10] [c00000000002c7b0] .bad_page_fault+0xb8/0xd4
[c00000000fff2e90] [c000000000005218] handle_page_fault+0x3c/0x5c
--- Exception: 300 at .kmem_cache_alloc+0x44/0xdc
    LR = .smp_call_function_single+0xbc/0x118
[c00000000fff3180] [c000000000085960] .smp_call_function_mask+0x60/0x208 (unreliable)
[c00000000fff3220] [c00000000008587c] .smp_call_function_single+0xbc/0x118
[c00000000fff3310] [c000000000085a0c] .smp_call_function_mask+0x10c/0x208
[c00000000fff3440] [c000000000085b3c] .smp_call_function+0x34/0x48
[c00000000fff34c0] [c000000000028848] .smp_send_stop+0x24/0x3c
[c00000000fff3540] [c0000000000589b4] .panic+0x94/0x1cc
[c00000000fff35d0] [c000000000024a84] .die+0x248/0x28c
[c00000000fff3680] [c00000000002c7b0] .bad_page_fault+0xb8/0xd4
[c00000000fff3700] [c000000000005218] handle_page_fault+0x3c/0x5c
--- Exception: 300 at .kmem_cache_alloc+0x44/0xdc
    LR = .smp_call_function_single+0xbc/0x118
[c00000000fff39f0] [c000000000085960] .smp_call_function_mask+0x60/0x208 (unreliable)
[c00000000fff3a90] [c00000000008587c] .smp_call_function_single+0xbc/0x118
[c00000000fff3b80] [c000000000085a0c] .smp_call_function_mask+0x10c/0x208
[c00000000fff3cb0] [c000000000085b3c] .smp_call_function+0x34/0x48
[c00000000fff3d30] [c000000000028848] .smp_send_stop+0x24/0x3c
[c00000000fff3db0] [c0000000000589b4] .panic+0x94/0x1cc
[c00000000fff3e40] [c000000000024a84] .die+0x248/0x28c
[c00000000fff3ef0] [c00000000002c7b0] .bad_page_fault+0xb8/0xd4
[c00000000fff3f70] [c000000000005218] handle_page_fault+0x3c/0x5c
Instruction dump:
7cfc3b78 f821fed1 60000000 60000000 e8010000 f8610160 f8810168 f82100e8 
f80100e0 880d01da 21200000 7c090114 <0b000000> a14d000a e93e8040 38a100c0 
------------[ cut here ]------------
Badness at kernel/smp.c:216
NIP: c00000000008580c LR: c000000000085a0c CTR: 0000000000000000
REGS: c00000000fff2730 TRAP: 0700   Tainted: G      D W  (2.6.27-rc4-next-20080826-autotest)
MSR: 8000000000021032 <ME,IR,DR>  CR: 42000028  XER: 00000000

TASK = c0000000fe061160[0] 'swapper' THREAD: c0000000fe080000 CPU: 1
GPR00: 0000000000000001 c00000000fff29b0 c000000000873748 0000000000000000
GPR04: c000000000828930 0000000000000000 0000000000000000 0000000000000000
GPR08: c00000000fff2c00 0000000000000001 0000000000000040 0000000000000000
GPR12: 0000000022000082 c0000000008f8500 0000000000000000 000000000796a428
GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000003
GPR24: 0000000000000001 000000000000000b 0000000000000000 c000000000828930
GPR28: 0000000000000000 c000000000828930 c00000000080d0e8 0000000000000000 NIP [c00000000008580c] .smp_call_function_single+0x4c/0x118
LR [c000000000085a0c] .smp_call_function_mask+0x10c/0x208

Call Trace:
[c00000000fff29b0] [c000000000934368] printk_buf+0x0/0x400 (unreliable)
[c00000000fff2aa0] [c000000000085a0c] .smp_call_function_mask+0x10c/0x208
[c00000000fff2bd0] [c000000000085b3c] .smp_call_function+0x34/0x48
[c00000000fff2c50] [c000000000028848] .smp_send_stop+0x24/0x3c
[c00000000fff2cd0] [c0000000000589b4] .panic+0x94/0x1cc
[c00000000fff2d60] [c000000000024a84] .die+0x248/0x28c
[c00000000fff2e10] [c00000000002c7b0] .bad_page_fault+0xb8/0xd4
[c00000000fff2e90] [c000000000005218] handle_page_fault+0x3c/0x5c
--- Exception: 300 at .kmem_cache_alloc+0x44/0xdc
    LR = .smp_call_function_single+0xbc/0x118
[c00000000fff3180] [c000000000085960] .smp_call_function_mask+0x60/0x208 (unreliable)
[c00000000fff3220] [c00000000008587c] .smp_call_function_single+0xbc/0x118
[c00000000fff3310] [c000000000085a0c] .smp_call_function_mask+0x10c/0x208
[c00000000fff3440] [c000000000085b3c] .smp_call_function+0x34/0x48
[c00000000fff34c0] [c000000000028848] .smp_send_stop+0x24/0x3c
[c00000000fff3540] [c0000000000589b4] .panic+0x94/0x1cc
[c00000000fff35d0] [c000000000024a84] .die+0x248000000000000001 0000000000000040 0000000000000000

GPR12: 0000000022000082 c0000000008f8500 0000000000000000 000000000796a428
GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000003
GPR24: 0000000000000001 000000000000000b 0000000000000000 c000000000828930
GPR28: 0000000000000000 c000000000828930 c00000000080d0e8 0000000000000000 NIP [c00000000008580c] .smp_call_function_single+0x4c/0x118
LR [c000000000085a0c] .smp_call_function_mask+0x10c/0x208

Call Trace:
Instruction dump:
7c9d2378 f8010010 f821ff11 7cbc2b78 e8010000 f82100b8 f80100b0 60000000 
a12d000a 880d01da 21600000 7c0b0114 <0b000000> 7f834800 409e0050 38000000 
Unable to handle kernel paging request for data at address 0x00000000
Faulting instruction address: 0xc0000000000e35b8
Oops: Kernel access of bad area, sig: 11 [#27]
SMP NR_CPUS=128 NUMA pSeries
Modules linked in:
NIP: c0000000000e35b8 LR: c00000000008587c CTR: 0000000000000000
REGS: c00000000ffe99e0 TRAP: 0300   Tainted: G      D W  (2.6.27-rc4-next-20080826-autotest)
MSR: 8000000000001032 <ME,IR,DR>  CR: 42000022  XER: 00000000
DAR: 0000000000000000, DSISR: 0000000040000000

TASK = c0000000fe061160[0] 'swapper' THREAD: c0000000fe080000 CPU: 1
GPR00: c00000000008587c c00000000ffe9c60 c000000000873748 c0000000008ec630
GPR04: 0000000000000020 ffffffffffffffff c00000000008587c 0000000000000000
GPR08: c00000000ffe9f50 0000000000000000 0000000000000040 0000000000000000
GPR12: 0000000022000082 c0000000008f8500 0000000000000000 000000000796a428
GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000003
GPR24: 0000000000000001 000000000000000b 0000000000000000 0000000000000020
GPR28: 0000000000000000 0000000000000000 c00000000080d0e8 0000000000000000 NIP [c0000000000e35b8] .kmem_cache_alloc+0x44/0xdc
LR [c00000000008587c] .smp_call_function_single+0xbc/0x118

Call Trace:
Instruction dump:
7c9b2378 f8010010 f821ff61 39200000 8bad01da 992d01da 7cc802a6 a12d000a 
38a0ffff 79291f24 7d291a14 e9290188 <e8090000> 7d274b78 83890018 2fa00000 
Kernel panic - not syncing: Fatal exception in interrupt
Call Trace:

.
.
<snip>
The Badness at kernel/smp.c:290 and Badness at kernel/smp.c:216 goes on in an loop.

Signature · 4 lines

Thanks & Regards,
Kamalesh Babulal,
Linux Technology Center,
IBM, ISTL.

Hiroshi Shimamoto

2008-08-26 23:49 UTC #11 lore raw

PATCH 1/1 net: fix compilation NG when !CONFIG_MODULE

In reply to Stephen Rothwell

From: Hiroshi Shimamoto <[email protected]>

CC net/core/dev.o
net/core/dev.c:1001: error: redefinition of 'dev_load' include/linux/netdevice.h:1645: error: previous definition of 'dev_load' was here make[2]: *** [net/core/dev.o] Error 1

dev_load() is not used when CONFIG_MODULE disabled.

Signed-off-by Hiroshi Shimamoto <[email protected]>

---
 net/core/dev.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

net/core/dev.c +2 -1

index b0a1ee8..bde9790 100644
@@ -996,7 +996,7 @@ EXPORT_SYMBOL(netdev_bonding_change);
  *	privileges this function loads the module. If module loading is not
  *	available in this kernel then it becomes a nop.
  */
-
+#ifdef CONFIG_MODULES
 void dev_load(struct net *net, const char *name)
 {
 	struct net_device *dev;

@@ -1008,6 +1008,7 @@ void dev_load(struct net *net, const char *name)
 	if (!dev && capable(CAP_SYS_MODULE))
 		request_module("%s", name);
 }
+#endif
 
 /**
  *	dev_open	- prepare an interface for use.

Signature · 1 line

1.5.6

Hiroshi Shimamoto

2008-08-26 23:57 UTC #12 lore raw

PATCH 1/1 initramfs: fix compilation warning

In reply to Stephen Rothwell

From: Hiroshi Shimamoto <[email protected]>

CC init/initramfs.o
init/initramfs.c:517: warning: 'clean_rootfs' defined but not used

clean_rootfs is not used when CONFIG_BLK_DEV_RAM disabled.

Signed-off-by Hiroshi Shimamoto <[email protected]>

---
 init/initramfs.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

init/initramfs.c +2 -0

index da8d030..2f056e2 100644
@@ -512,6 +512,7 @@ skip:
 	initrd_end = 0;
 }
 
+#ifdef CONFIG_BLK_DEV_RAM
 #define BUF_SIZE 1024
 static void __init clean_rootfs(void)
 {

@@ -558,6 +559,7 @@ static void __init clean_rootfs(void)
 	sys_close(fd);
 	kfree(buf);
 }
+#endif
 
 static int __init populate_rootfs(void)
 {

Signature · 1 line

1.5.6