2.6.26-rc1-git9: Reported regressions from 2.6.25

This message contains a list of some regressions from 2.6.25, for which there are no fixes in the mainline I know of. If any of them have been fixed already, please let me know.

If you know of any other unresolved regressions from 2.6.25, please let me know either and I'll add them to the list. Also, please let me know if any of the entries below are invalid.

Each entry from the list will be sent additionally in an automatic reply to this message with CCs to the people involved in reporting and handling the issue.

Listed regressions statistics:

Date Total Pending Unresolved
----------------------------------------
2008-05-11 53 46 34

Unresolved regressions
----------------------

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10679
Subject : 2.6.26-rc1 regression: e5e1d3cb20034a3cbcfff1f0bae12201aa2ce17e breaks artsd
Submitter : Roberto Oppedisano <[email protected]>
Date : 2008-05-11 20:15 (1 days old)
References : http://lkml.org/lkml/2008/5/11/118

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10678
Subject : 2.6.26-rc1: warnings from sysfs, bluetooth related
Submitter : Pavel Machek <[email protected]>
Date : 2008-05-11 16:19 (1 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121052279002112&amp;w=4

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10677
Subject : Error in save_stack_trace() on x86_64?
Submitter : Vegard Nossum <[email protected]>
Date : 2008-05-11 13:09 (1 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121051140821821&amp;w=4

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10676
Subject : 2.6.26-rc1 on x86: ld: warning: dot moved backwards before `.text'
Submitter : Mikael Pettersson <[email protected]>
Date : 2008-05-10 20:18 (2 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121045079732174&amp;w=4

Sam Ravnborg <[email protected]> Cyrill Gorcunov <[email protected]> Pavel Machek <[email protected]>

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10674
Subject : /proc/kallsyms broken in 2.6.26-rc1-git6
Submitter : Andi Kleen <[email protected]>
Date : 2008-05-09 17:41 (3 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121035508420184&amp;w=4

Alexey Dobriyan <[email protected]>

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10671
Subject : [2.6.26-rc1] WARNING: at drivers/base/sys.c:183
Submitter : Tilman Schmidt <[email protected]>
Date : 2008-05-11 18:18 (1 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121052996610776&amp;w=4

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10670
Subject : BUG: linux-2.6.26-rc1 oops at thinkpad_acpi:led_set_status
Submitter : Karol Lewandowski <[email protected]>
Date : 2008-05-08 23:12 (4 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121028841527994&amp;w=4

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10669
Subject : ACPI: kmemcheck: Caught 16-bit read from freed memory (f7c12ec6)
Submitter : Vegard Nossum <[email protected]>
Date : 2008-05-06 16:09 (6 days old)
References : http://marc.info/?l=linux-acpi&amp;m=121009034825514&amp;w=4

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10651
Subject : 2.6.26-git: ata_piix link is slow to respond regression.
Submitter : Soeren Sonnenburg <[email protected]>
Date : 2008-05-08 19:30 (4 days old)
References : http://lkml.org/lkml/2008/5/8/290

		  http://thread.gmane.org/gmane.linux.ide/31317/focus=31349

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10650
Subject : 2.6.26-rcX VC console scrolling regression
Submitter : David Miller <[email protected]>
Date : 2008-05-07 21:46 (5 days old)
References : http://lkml.org/lkml/2008/5/8/9

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10648
Subject : CONFIG_PRINTK_TIME broken on git HEAD ?
Submitter : Gabriel C <[email protected]>
Date : 2008-05-08 00:26 (4 days old)
References : http://lkml.org/lkml/2008/5/7/352

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10645
Subject : 2.6.26-rc1 lost half the RAM on UltraSPARC 5
Submitter : Mikael Pettersson <[email protected]>
Date : 2008-05-07 20:36 (5 days old)
References : http://lkml.org/lkml/2008/5/7/204

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10642
Subject : general protection fault: 0000 [1] PREEMPT SMP DEBUG_PAGEALLOC
Submitter : Zdenek Kabelac <[email protected]>
Date : 2008-05-07 16:03 (5 days old)
References : http://lkml.org/lkml/2008/5/7/48

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10641
Subject : [BUG] 2.6.26-rc1-git4 - task blocked on powerpc for more than 120 seconds
Submitter : Kamalesh Babulal <[email protected]>
Date : 2008-05-07 13:34 (5 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121016673607188&amp;w=2

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10640
Subject : audio skipping on 2.6.26-rc1
Submitter : Miklos Szeredi <[email protected]>
Date : 2008-05-07 7:56 (5 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121014707707781&amp;w=2

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10639
Subject : parisc DISCONTIGMEM compile breakage
Submitter : Adrian Bunk <[email protected]>
Date : 2008-05-08 13:52 (4 days old)

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10632
Subject : [2.6.26-rc1] Output to console stops when booted without 'vga=791'
Submitter : Frans Pop <[email protected]>
Date : 2008-05-05 13:51 (7 days old)
References : http://www.ussg.iu.edu/hypermail/linux/kernel/0805.0/2080.html

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10630
Subject : USB devices plugged into dock are not discoverred until reload of ehci-hcd
Submitter : Lukas Hejtmanek <[email protected]>
Date : 2008-05-05 10:02 (7 days old)
References : http://lkml.org/lkml/2008/5/5/77

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10629
Subject : 2.6.26-rc1-$sha1: RIP __d_lookup+0x8c/0x160
Submitter : Alexey Dobriyan <[email protected]>
Date : 2008-05-05 09:59 (7 days old)
References : http://lkml.org/lkml/2008/5/5/28

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10628
Subject : 2.6.26-rc1-git1 -- trying to get vblank count for disabled pipe 0
Submitter : Miles Lane <[email protected]>
Date : 2008-05-04 21:12 (8 days old)
References : http://lkml.org/lkml/2008/5/4/309

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10627
Subject : 2.6.26-rc1 c67x00-ll-hpi compilation failure
Submitter : Samuel Thibault <[email protected]>
Date : 2008-05-04 13:04 (8 days old)
References : http://lkml.org/lkml/2008/5/4/84

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10624
Subject : DVB build issue
Submitter : Alistair John Strachan <[email protected]>
Date : 2008-05-03 22:47 (9 days old)
References : http://lkml.org/lkml/2008/5/3/247

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10623
Subject : k8-bus_64.c(?) spams dmesg in 2.6.26-rc1
Submitter : Jeff Garzik <[email protected]>
Date : 2008-05-04 07:28 (8 days old)
References : http://lkml.org/lkml/2008/5/4/78

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10622
Subject : [BUG 2.6.26-rc1] scsi (or sysfs or vm?) oops in sr_probe()
Submitter : Jeff Garzik <[email protected]>
Date : 2008-05-04 07:22 (8 days old)
References : http://lkml.org/lkml/2008/5/4/76

Dan Williams <[email protected]>

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10621
Subject : WARNING: at include/linux/blkdev.h:443
Submitter : Prakash Punnoor <[email protected]>
Date : 2008-05-03 11:51 (9 days old)
References : http://lkml.org/lkml/2008/5/3/43

Neil Brown <[email protected]>

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10620
Subject : X does not resume (intel chipset)
Submitter : Romano Giannetti <[email protected]>
Date : 2008-05-08 06:53 (4 days old)
References : http://lkml.org/lkml/2008/5/8/378

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10619
Subject : [regression] ata2: device not ready (errno=-16), forcing hardreset
Submitter : Alexey Fisher <[email protected]>
Date : 2008-05-08 06:49 (4 days old)

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10614
Subject : WARNING: at include/linux/blkdev.h:431 blk_queue_init_tags+0x110/0x11f()
Submitter : J.A. Magallón <[email protected]>
Date : 2008-05-01 02:50 (11 days old)
References : http://lkml.org/lkml/2008/4/30/614

Jens Axboe <[email protected]>

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10613
Subject : BIOS bug, APIC version is 0 for CPU#0!
Submitter : Gabriel C <[email protected]>
Date : 2008-05-03 15:11 (9 days old)
References : http://www.ussg.iu.edu/hypermail/linux/kernel/0805.0/1258.html

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10606
Subject : 2.6.26-rc1 regression: ACPI fails to load SDT. - Dell M1530
Submitter : NIgel Cunningham <[email protected]>
Date : 2008-05-05 18:11 (7 days old)

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10598
Subject : Huawei CDMA PCMCIA card oops
Submitter : Pavel Kysilka <[email protected]>
Date : 2008-05-03 06:38 (9 days old)

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10557
Subject : [regression] latest git couse kernel oops.
Submitter : Alexey Fisher <[email protected]>
Date : 2008-04-26 00:19 (16 days old)

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10495
Subject : Voyager phys_cpu_present_map compile error
Submitter : Adrian Bunk <[email protected]>
Date : 2008-04-20 17:12 (22 days old)
References : http://lkml.org/lkml/2008/4/20/259

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10493
Subject : mips BCM47XX compile error
Submitter : Adrian Bunk <[email protected]>
Date : 2008-04-20 17:07 (22 days old)
References : http://lkml.org/lkml/2008/4/20/34

Regressionn with patches
------------------------

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10675
Subject : ppc compile failure (__flush_icache_range etc undeclared)
Submitter : Meelis Roos <[email protected]>
Date : 2008-05-10 11:51 (2 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121042037427529&amp;w=4

Segher Boessenkool <[email protected]>
Patch : http://ozlabs.org/pipermail/linuxppc-dev/2008-May/056007.html

		  http://ozlabs.org/pipermail/linuxppc-dev/2008-May/056008.html

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10673
Subject : build issue #380 for v2.6.26-rc1-279-g28a4acb : mach-voyager: multiple definition of `phys_cpu_present_map'
Submitter : Toralf Förster <[email protected]>
Date : 2008-05-09 9:13 (3 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121032450804476&amp;w=4

Ingo Molnar <[email protected]> WANG Cong <[email protected]>
Patch : http://marc.info/?l=linux-kernel&amp;m=121042819904974&amp;w=4

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10672
Subject : 2.6.26-rc1 regression: ISA DMA broken (bisected)
Submitter : Rene Herman <[email protected]>
Date : 2008-05-09 1:37 (3 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121029711005560&amp;w=4

Patch : http://marc.info/?l=linux-kernel&amp;m=121032355203154&amp;w=4

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10649
Subject : lxfb driver regression
Submitter : Andres Salomon <[email protected]>
Date : 2008-05-07 21:08 (5 days old)
References : http://lkml.org/lkml/2008/5/7/441

Patch : http://lkml.org/lkml/2008/5/8/207

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10643
Subject : s390 kvm_virtio.c build error
Submitter : Adrian Bunk <[email protected]>
Date : 2008-05-08 14:05 (4 days old)
References : http://lkml.org/lkml/2008/5/3/155

Patch : several nearly identical patches, KVM tree should bring one

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10638
Subject : sysbench+mysql(oltp, readonly) 30% regression with 2.6.26-rc1
Submitter : Zhang, Yanmin <[email protected]>
Date : 2008-05-07 4:55 (5 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121013681527052&amp;w=2

Patch : http://marc.info/?l=linux-kernel&amp;m=121015292616802&amp;w=2

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10634
Subject : volanoMark regression with kernel 2.6.26-rc1
Submitter : Zhang, Yanmin <[email protected]>
Date : 2008-05-06 2:06 (6 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121003968414287&amp;w=2

Srivatsa Vaddagiri <[email protected]> Ingo Molnar <[email protected]>
Peter Zijlstra <[email protected]>
Patch : http://marc.info/?l=linux-kernel&amp;m=121015292616788&amp;w=2

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10633
Subject : Problem mounting ext2 using ext3 (or any failure to mount a partition) leads to an oops.
Submitter : Geert Uytterhoeven <[email protected]>
Date : 2008-05-05 17:12 (7 days old)
References : http://www.ussg.iu.edu/hypermail/linux/kernel/0805.0/2281.html

Jan Kara <[email protected]>
Patch : http://marc.info/?l=linux-kernel&amp;m=121006820018050&amp;w=2

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10631
Subject : Please revert 709f744 (x86: bitops asm constraint fixes)
Submitter : Simon Holm Thøgersen <[email protected]>
Date : 2005-05-05 09:35 (1103 days old)
References : http://www.ussg.iu.edu/hypermail/linux/kernel/0805.0/1963.html

Jan Beulich <[email protected]> Thomas Gleixner <[email protected]>
Patch : http://www.ussg.iu.edu/hypermail/linux/kernel/0805.0/2661.html

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10616
Subject : Horrendous Audio Stutter - current git
Submitter : Parag Warudkar <[email protected]>
Date : 2008-05-02 20:14 (10 days old)
References : http://lkml.org/lkml/2008/5/1/440

Patch : http://lkml.org/lkml/2008/5/2/126

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10615
Subject : Oops with strace_test
Submitter : Eric Sesterhenn <[email protected]>
Date : 2008-04-30 14:12 (12 days old)
References : http://lkml.org/lkml/2008/4/30/162

Patch : http://lkml.org/lkml/2008/5/7/225

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10582
Subject : INFO: task pdflush:27505 blocked for more than 120 seconds.
Submitter : Plamen Petrov <[email protected]>
Date : 2008-05-01 02:30 (11 days old)

Patch : http://bugzilla.kernel.org/attachment.cgi?id=15999

For details, please visit the bug entries and follow the links given in references.

As you can see, there is a Bugzilla entry for each of the listed regressions. There also is a Bugzilla entry used for tracking the regressions from 2.6.25, unresolved as well as resolved, at:

http://bugzilla.kernel.org/show_bug.cgi?id=10492

Please let me know if there are any Bugzilla entries that should be added to the list in there.

Thanks,
Rafael

This message has been generated automatically as a part of a report of recent regressions.

The following bug entry is on the current list of known regressions from 2.6.25. Please verify if it still should be listed.

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10493
Subject : mips BCM47XX compile error
Submitter : Adrian Bunk <[email protected]>
Date : 2008-04-20 17:07 (22 days old)
References : http://lkml.org/lkml/2008/4/20/34

yes

cu
Adrian

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

This message has been generated automatically as a part of a report of recent regressions.

The following bug entry is on the current list of known regressions from 2.6.25. Please verify if it still should be listed.

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10606
Subject : 2.6.26-rc1 regression: ACPI fails to load SDT. - Dell M1530
Submitter : NIgel Cunningham <[email protected]>
Date : 2008-05-05 18:11 (7 days old)

Hi.

Patch is available and verified, but not yet in Mainline as far as I know.

Regards,

Nigel

Do you have a pointer to it?

Rafael

Hi.

http://bugzilla.kernel.org/attachment.cgi?id=16061&action=view

Regards,

Nigel

This message has been generated automatically as a part of a report of recent regressions.

The following bug entry is on the current list of known regressions from 2.6.25. Please verify if it still should be listed.

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10613
Subject : BIOS bug, APIC version is 0 for CPU#0!
Submitter : Gabriel C <[email protected]>
Date : 2008-05-03 15:11 (9 days old)
References : http://www.ussg.iu.edu/hypermail/linux/kernel/0805.0/1258.html

This message has been generated automatically as a part of a report of recent regressions.

The following bug entry is on the current list of known regressions from 2.6.25. Please verify if it still should be listed.

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10582
Subject : INFO: task pdflush:27505 blocked for more than 120 seconds.
Submitter : Plamen Petrov <[email protected]>
Date : 2008-05-01 02:30 (11 days old)

Patch : http://bugzilla.kernel.org/attachment.cgi?id=15999

This message has been generated automatically as a part of a report of recent regressions.

The following bug entry is on the current list of known regressions from 2.6.25. Please verify if it still should be listed.

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10557
Subject : [regression] latest git couse kernel oops.
Submitter : Alexey Fisher <[email protected]>
Date : 2008-04-26 00:19 (16 days old)

Changeset in question is a memory corruptor fixed almost immediately afterwards. So if that's where bisect _ends_, I'm afraid that this is not the end of story.

This message has been generated automatically as a part of a report of recent regressions.

The following bug entry is on the current list of known regressions from 2.6.25. Please verify if it still should be listed.

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10495
Subject : Voyager phys_cpu_present_map compile error
Submitter : Adrian Bunk <[email protected]>
Date : 2008-04-20 17:12 (22 days old)
References : http://lkml.org/lkml/2008/4/20/259

I think this should be fixed by James's patch [1].

1. http://lkml.org/lkml/2008/5/9/188

Hi, I'm a .signature virus, please copy/paste me to help me spread
all over the world.

This message has been generated automatically as a part of a report of recent regressions.

The following bug entry is on the current list of known regressions from 2.6.25. Please verify if it still should be listed.

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10619
Subject : [regression] ata2: device not ready (errno=-16), forcing hardreset
Submitter : Alexey Fisher <[email protected]>
Date : 2008-05-08 06:49 (4 days old)

Fixed by 005b1f7495e812b99b73de5adbc73afd7a1cbcaf

Thanks, closed.

This message has been generated automatically as a part of a report of recent regressions.

The following bug entry is on the current list of known regressions from 2.6.25. Please verify if it still should be listed.

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10615
Subject : Oops with strace_test
Submitter : Eric Sesterhenn <[email protected]>
Date : 2008-04-30 14:12 (12 days old)
References : http://lkml.org/lkml/2008/4/30/162

Patch : http://lkml.org/lkml/2008/5/7/225

fixes by: fd3c3ed5d1e3ceb37635cbe6d220ab94aae0781d

Thanks,
tglx

Thanks, closed.

Rafael

This message has been generated automatically as a part of a report of recent regressions.

The following bug entry is on the current list of known regressions from 2.6.25. Please verify if it still should be listed.

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10616
Subject : Horrendous Audio Stutter - current git
Submitter : Parag Warudkar <[email protected]>
Date : 2008-05-02 20:14 (10 days old)
References : http://lkml.org/lkml/2008/5/1/440

Patch : http://lkml.org/lkml/2008/5/2/126

Still present both in Linus tree and sched-devel - root cause is not yet well understood per Ingo.

Worked around by disabling GROUP_SCHED stuff by default (commit aac6abca858386438d9a7233c3471d2ecfa2f704 ).

Parag

What causes this regression?

Is this commit 018d6db4cb5bbdcd65424a16f2dcca692ed32ae4 (sched: re-do "sched: fix fair sleepers") that had already been reverted in 2.6.25 for causing such regressions or is this caused by a different commit?

cu
Adrian

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

GROUP_SCHED stuff.

Both current -git and sched-devel have this problem - that means it's unrelated to the commit you refer to unless it was reintroduced in a different form but same effect.

Parag

It was changed, not reverted.

But most likely I was simply thinking in the wrong direction.

cu
Adrian

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

No, it's not that commit. That commit also caused a (less severe and fairly hard to reproduce) latency issue, but that has now been fixed by the patch listed in the BR (committed as a992241de614dd2b7c97a9ba64e28c0e563f19bf).

The issue reported by Parag as "Horrendous Audio Stutter" (and confirmed by me) is much more severe and is indeed related to group scheduling.

The group scheduling related issue disappeared for me with -rc1 after reverting the following two commits (as suggested by Mike Galbraith):
- 7ba2e74ab5a0518bc953042952dd165724bc70c9
sched: debug: show a weight tree
- 8f1bc385cfbab474db6c27b5af1e439614f3025c
sched: fair: weight calculations

Given the confusing and partially incorrect information in this BR, it seems best to me to close it and open a new one for the issue reported by Parag.

Cheers,
FJP

This message has been generated automatically as a part of a report of recent regressions.

The following bug entry is on the current list of known regressions from 2.6.25. Please verify if it still should be listed.

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10598
Subject : Huawei CDMA PCMCIA card oops
Submitter : Pavel Kysilka <[email protected]>
Date : 2008-05-03 06:38 (9 days old)

This message has been generated automatically as a part of a report of recent regressions.

The following bug entry is on the current list of known regressions from 2.6.25. Please verify if it still should be listed.

Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10622
Subject : [BUG 2.6.26-rc1] scsi (or sysfs or vm?) oops in sr_probe()
Submitter : Jeff Garzik <[email protected]>
Date : 2008-05-04 07:22 (8 days old)
References : http://lkml.org/lkml/2008/5/4/76

Dan Williams <[email protected]>

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10621
Subject : WARNING: at include/linux/blkdev.h:443
Submitter : Prakash Punnoor <[email protected]>
Date : 2008-05-03 11:51 (9 days old)
References : http://lkml.org/lkml/2008/5/3/43

Neil Brown <[email protected]>

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10620
Subject : X does not resume (intel chipset)
Submitter : Romano Giannetti <[email protected]>
Date : 2008-05-08 06:53 (4 days old)
References : http://lkml.org/lkml/2008/5/8/378

My symptoms were not identical to the ones which Romano reported (which in turn were not identical to the ones which Hugh reported), but Hugh's patch did fix things for me; so Romano might want to give this a try:

http://lkml.org/lkml/2008/5/13/188

- Ted

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10624
Subject : DVB build issue
Submitter : Alistair John Strachan <[email protected]>
Date : 2008-05-03 22:47 (9 days old)
References : http://lkml.org/lkml/2008/5/3/247

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10630
Subject : USB devices plugged into dock are not discoverred until reload of ehci-hcd
Submitter : Lukas Hejtmanek <[email protected]>
Date : 2008-05-05 10:02 (7 days old)
References : http://lkml.org/lkml/2008/5/5/77

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10629
Subject : 2.6.26-rc1-$sha1: RIP __d_lookup+0x8c/0x160
Submitter : Alexey Dobriyan <[email protected]>
Date : 2008-05-05 09:59 (7 days old)
References : http://lkml.org/lkml/2008/5/5/28

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10627
Subject : 2.6.26-rc1 c67x00-ll-hpi compilation failure
Submitter : Samuel Thibault <[email protected]>
Date : 2008-05-04 13:04 (8 days old)
References : http://lkml.org/lkml/2008/5/4/84

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10628
Subject : 2.6.26-rc1-git1 -- trying to get vblank count for disabled pipe 0
Submitter : Miles Lane <[email protected]>
Date : 2008-05-04 21:12 (8 days old)
References : http://lkml.org/lkml/2008/5/4/309

I will check asap. I am pretty busy with unpacking boxes after moving.

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10623
Subject : k8-bus_64.c(?) spams dmesg in 2.6.26-rc1
Submitter : Jeff Garzik <[email protected]>
Date : 2008-05-04 07:28 (8 days old)
References : http://lkml.org/lkml/2008/5/4/78

fixed by: 0646153921892cc7a81320a6920beaca06b3e9f0

Thanks,
tglx

This one has been closed already.

Thanks,
Rafael

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10631
Subject : Please revert 709f744 (x86: bitops asm constraint fixes)
Submitter : Simon Holm Thøgersen <[email protected]>
Date : 2005-05-05 09:35 (1103 days old)
References : http://www.ussg.iu.edu/hypermail/linux/kernel/0805.0/1963.html

Jan Beulich <[email protected]> Thomas Gleixner <[email protected]>
Patch : http://www.ussg.iu.edu/hypermail/linux/kernel/0805.0/2661.html

fixed by: eb2b4e682a6d5b4779a7f1a6a8419982919795f6

Thanks,
tglx

Thanks, closed.

Rafael

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10632
Subject : [2.6.26-rc1] Output to console stops when booted without 'vga=791'
Submitter : Frans Pop <[email protected]>
Date : 2008-05-05 13:51 (7 days old)
References : http://www.ussg.iu.edu/hypermail/linux/kernel/0805.0/2080.html

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10638
Subject : sysbench+mysql(oltp, readonly) 30% regression with 2.6.26-rc1
Submitter : Zhang, Yanmin <[email protected]>
Date : 2008-05-07 4:55 (5 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121013681527052&amp;w=2

Patch : http://marc.info/?l=linux-kernel&amp;m=121015292616802&amp;w=2

this entry should still be listed, revert is queued up.

Ingo

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10633
Subject : Problem mounting ext2 using ext3 (or any failure to mount a partition) leads to an oops.
Submitter : Geert Uytterhoeven <[email protected]>
Date : 2008-05-05 17:12 (7 days old)
References : http://www.ussg.iu.edu/hypermail/linux/kernel/0805.0/2281.html

Jan Kara <[email protected]>
Patch : http://marc.info/?l=linux-kernel&amp;m=121006820018050&amp;w=2

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10634
Subject : volanoMark regression with kernel 2.6.26-rc1
Submitter : Zhang, Yanmin <[email protected]>
Date : 2008-05-06 2:06 (6 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121003968414287&amp;w=2

Srivatsa Vaddagiri <[email protected]> Ingo Molnar <[email protected]>
Peter Zijlstra <[email protected]>
Patch : http://marc.info/?l=linux-kernel&amp;m=121015292616788&amp;w=2

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10639
Subject : parisc DISCONTIGMEM compile breakage
Submitter : Adrian Bunk <[email protected]>
Date : 2008-05-08 13:52 (4 days old)

yes

cu
Adrian

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10641
Subject : [BUG] 2.6.26-rc1-git4 - task blocked on powerpc for more than 120 seconds
Submitter : Kamalesh Babulal <[email protected]>
Date : 2008-05-07 13:34 (5 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121016673607188&amp;w=2

I'm not handling this one.

cu
Adrian

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

Thanks for letting me know, I've updated the bug entry to reflect this (well, let's see if the new mechanics in the script works ;-)).

Thanks,
Rafael

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10642
Subject : general protection fault: 0000 [1] PREEMPT SMP DEBUG_PAGEALLOC
Submitter : Zdenek Kabelac <[email protected]>
Date : 2008-05-07 16:03 (5 days old)
References : http://lkml.org/lkml/2008/5/7/48

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10643
Subject : s390 kvm_virtio.c build error
Submitter : Adrian Bunk <[email protected]>
Date : 2008-05-08 14:05 (4 days old)
References : http://lkml.org/lkml/2008/5/3/155

Patch : several nearly identical patches, KVM tree should bring one

yes

cu
Adrian

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10645
Subject : 2.6.26-rc1 lost half the RAM on UltraSPARC 5
Submitter : Mikael Pettersson <[email protected]>
Date : 2008-05-07 20:36 (5 days old)
References : http://lkml.org/lkml/2008/5/7/204

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10648
Subject : CONFIG_PRINTK_TIME broken on git HEAD ?
Submitter : Gabriel C <[email protected]>
Date : 2008-05-08 00:26 (4 days old)
References : http://lkml.org/lkml/2008/5/7/352

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10649
Subject : lxfb driver regression
Submitter : Andres Salomon <[email protected]>
Date : 2008-05-07 21:08 (5 days old)
References : http://lkml.org/lkml/2008/5/7/441

Patch : http://lkml.org/lkml/2008/5/8/207

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10640
Subject : audio skipping on 2.6.26-rc1
Submitter : Miklos Szeredi <[email protected]>
Date : 2008-05-07 7:56 (5 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121014707707781&amp;w=2

This is a duplicate of [Bug #10616] Horrendous Audio Stutter - current git .

Parag

that should be resolved via your patch which i pushed upstream (commit v2.6.26-rc1-83-gaac6abc), which marks group scheduling experimental and non-default.

i think the audio skipping from Miklos, if it does not go away with disabling group scheduling, might also be solved by:

- commit v2.6.26-rc1-181-g4615112 ("sched: fix weight calculations") from Mike.

- or by commit v2.6.26-rc1-82-g3e51f33 from Peter ("sched: add optional support for CONFIG_HAVE_UNSTABLE_SCHED_CLOCK") which makes the scheduler clock more reliable [and hence produce no artificial latencies] on NOHZ

- or by commit v2.6.26-rc1-66-ga992241 from Peter ("sched: fix normalized sleeper").

Ingo

Miklos, can you please verify if the problem is present in 2.6.26-rc2?

Rafael

Yep, disabling group sched fixed it.

Miklos

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10650
Subject : 2.6.26-rcX VC console scrolling regression
Submitter : David Miller <[email protected]>
Date : 2008-05-07 21:46 (5 days old)
References : http://lkml.org/lkml/2008/5/8/9

akpm has the patch in -mm.

(And how do you select regression reports? I do not think computer AI was that sophisticated yet to read full English.)

Manually, more or less.

Thanks,
Rafael

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10669
Subject : ACPI: kmemcheck: Caught 16-bit read from freed memory (f7c12ec6)
Submitter : Vegard Nossum <[email protected]>
Date : 2008-05-06 16:09 (6 days old)
References : http://marc.info/?l=linux-acpi&amp;m=121009034825514&amp;w=4

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10670
Subject : BUG: linux-2.6.26-rc1 oops at thinkpad_acpi:led_set_status
Submitter : Karol Lewandowski <[email protected]>
Date : 2008-05-08 23:12 (4 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121028841527994&amp;w=4

It is related to:

1. Debian gcc in stable being used to compile the kernel
2. unmodified led_set_status() function on thinkpad-acpi.c
3. kernel compiled in "optimize for size" mode
4. stack frames NOT being enabled.

Change one, and the bug is gone.

AFAIK, it means Debian stable's gcc is generating bad code.

But I need help from someone with good knowledge of gcc to give us the final word on it. I might be doing something stupid in thinkpad-acpi.c, after all.

I will attach the relevant data to the bug report.

  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh

No, your code is buggy:

#define TPACPI_LED_NUMLEDS 8
static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];

static int led_write(char *buf)
{
...

                if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
                        return -EINVAL;
...
                rc = led_set_status(led, s);

...
}

static int led_set_status(unsigned int led, enum led_status_t ledstatus) {
...

        switch (led_supported) {
...
        case TPACPI_LED_OLD:
                        /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */
----->                  led = 1 << led;
                        rc = ec_write(TPACPI_LED_EC_HLMS, led);
                        if (rc >= 0)
                                rc = ec_write(TPACPI_LED_EC_HLBL,
                                              led * led_exp_hlbl[ledstatus]);
                        if (rc >= 0)
                                rc = ec_write(TPACPI_LED_EC_HLCL,
                                              led * led_exp_hlcl[ledstatus]);
                        break;
...
        if (!rc)
                tpacpi_led_state_cache[led] = ledstatus;

... ^^^
}

According to the assembler code "led" is in register EBX, and in the trace the value of EBX is 0x80.

0x80 = 1 << 7

What happens when you write to tpacpi_led_state_cache[0x80] is undefined, and it's not a surprise that random changes let the bug seem to disappear.

cu
Adrian

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

ARGH. Thanks. Will fix ASAP. This is really one of those cases where one is "too close to actualy see the picture".

Indeed. Thanks Adrian.

  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh

Patch ready, tested by the bug submitter, and sent to Len Brown for merging through the acpi-test tree.

A copy of the patch is also in the bugzilla report.

I will tag the report as CODE_FIX when Len accepts the patch, and close the bugzilla report when the patch reaches mainline.

  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10671
Subject : [2.6.26-rc1] WARNING: at drivers/base/sys.c:183
Submitter : Tilman Schmidt <[email protected]>
Date : 2008-05-11 18:18 (1 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121052996610776&amp;w=4

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10651
Subject : 2.6.26-git: ata_piix link is slow to respond regression.
Submitter : Soeren Sonnenburg <[email protected]>
Date : 2008-05-08 19:30 (4 days old)
References : http://lkml.org/lkml/2008/5/8/290

		  http://thread.gmane.org/gmane.linux.ide/31317/focus=31349

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10672
Subject : 2.6.26-rc1 regression: ISA DMA broken (bisected)
Submitter : Rene Herman <[email protected]>
Date : 2008-05-09 1:37 (3 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121029711005560&amp;w=4

Patch : http://marc.info/?l=linux-kernel&amp;m=121032355203154&amp;w=4

Patch is queued for the next pull.

Thanks,
tglx

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10673
Subject : build issue #380 for v2.6.26-rc1-279-g28a4acb : mach-voyager: multiple definition of `phys_cpu_present_map'
Submitter : Toralf Förster <[email protected]>
Date : 2008-05-09 9:13 (3 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121032450804476&amp;w=4

Ingo Molnar <[email protected]> WANG Cong <[email protected]>
Patch : http://marc.info/?l=linux-kernel&amp;m=121042819904974&amp;w=4

Duplicate of #10495

Thanks,
tglx

Already marked as a duplicate.

Thanks,
Rafael

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10674
Subject : /proc/kallsyms broken in 2.6.26-rc1-git6
Submitter : Andi Kleen <[email protected]>
Date : 2008-05-09 17:41 (3 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121035508420184&amp;w=4

Alexey Dobriyan <[email protected]>

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10675
Subject : ppc compile failure (__flush_icache_range etc undeclared)
Submitter : Meelis Roos <[email protected]>
Date : 2008-05-10 11:51 (2 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121042037427529&amp;w=4

Segher Boessenkool <[email protected]>
Patch : http://ozlabs.org/pipermail/linuxppc-dev/2008-May/056007.html

		  http://ozlabs.org/pipermail/linuxppc-dev/2008-May/056008.html

Patches were merged upstream yesterday and this specific compile error does not happen any more.

However, there are 2 page-related link errors, now that it got to linking stage:
ERROR: "copy_page" [fs/fuse/fuse.ko] undefined!
ERROR: "empty_zero_page" [fs/ext4/ext4dev.ko] undefined!

Should I report these as different errors or is is related enough?

Meelis Roos ([email protected])

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10677
Subject : Error in save_stack_trace() on x86_64?
Submitter : Vegard Nossum <[email protected]>
Date : 2008-05-11 13:09 (1 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121051140821821&amp;w=4

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10676
Subject : 2.6.26-rc1 on x86: ld: warning: dot moved backwards before `.text'
Submitter : Mikael Pettersson <[email protected]>
Date : 2008-05-10 20:18 (2 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121045079732174&amp;w=4

Sam Ravnborg <[email protected]> Cyrill Gorcunov <[email protected]> Pavel Machek <[email protected]>

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10678
Subject : 2.6.26-rc1: warnings from sysfs, bluetooth related
Submitter : Pavel Machek <[email protected]>
Date : 2008-05-11 16:19 (1 days old)
References : http://marc.info/?l=linux-kernel&amp;m=121052279002112&amp;w=4

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Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10679
Subject : 2.6.26-rc1 regression: e5e1d3cb20034a3cbcfff1f0bae12201aa2ce17e breaks artsd
Submitter : Roberto Oppedisano <[email protected]>
Date : 2008-05-11 20:15 (1 days old)
References : http://lkml.org/lkml/2008/5/11/118

At Sun, 11 May 2008 22:04:16 +0200 (CEST),

It's no regression but just a problem of a new driver. The reporter must have added the new config (CONFIG_SND_PCSP=[y,m]) explicitly.

Takashi

People who include this driver (either because they added it thinking it wouldn't do much), or because their distro compiles lots of stuff as module, could potentially get surprised, if it renumbers how the soundcards are enumerated. On my system, my sound card ended up going from hw:0 to hw:1, which given my ~/.asoundrc, meant that sound appeared to be broken with errors such as this:

aplay: set_params:900: Sample format non available

Once I edited by ~/.asoundrc file to use hw:1 instead of hw:0 the problem went away, so it's really not a kernel _bug_ per se, but the result might be surprising. Maybe there should be a quick warning in the Kconfig file? It's not that big of a deal, but I did end up spending quite a bit of time trying to track down what I initially thought was a regression.

Regards,

- Ted

At Wed, 14 May 2008 17:20:11 -0400,

Sounds reasonable. To where should it be added, BTW? Little people seem to care about Kconfig help texts, and an extra comment block (with depends on SND_PCSP) could be annoying...

thanks,

Takashi

That's a good question. A note that including including this module could potentially cause sound cards to be renumbered might be reasonable, since I suspect most users (and most application programs!) have been accustomed to only having one sound card, and so building this module may cause sound cards to be renumbered in Kconfig would at least be a start.

I know this wouldn't help users of distro kernels, but this would at least be one way of warning distro maintainers to think twice about enabling it as a module. BTW, what *is* the utility of this card, and how do you use it? I haven't been able to figure out how to use it do anything entertaining at all. Any attempts to use it on my system just lead to various confusing error messages.

Also, BTW, it might be nice to remove the following hunk of text from drivers/sound/Kconfig:

I'm told that even without a sound card, you can make your computer say more than an occasional beep, by programming the PC speaker. Kernel patches and supporting utilities to do that are in the pcsp package, available at <ftp://ftp.infradead.org/pub/pcsp/>.

What's there at the above URL is for the 2.2 and 2.4 kernels, and the utilities at pcsnd-kit.tar.gz don't work (and didn't compile until I futzed with them slightly).

So I'm still rather puzzled how to make the snd-pcsp actually do anything useful, unless it simply doesn't work on my Thinkpad. (Is it normal that the sound volume levels reported by alsamixer can be muted or unmounted, but always report 0, and can't be adjusted up?)

- Ted

At Thu, 15 May 2008 09:06:54 -0400,

Yes.

Well, yeah, for distro kernels, it's then a problem of distributors :)

It looks like a problem in the recent alsa-lib. This driver works fine without dmix, e.g. "aplay -Dplughw:1 foo.wav" works. I'll investigate later.

OK, I'll clean it up, too.

It can be adjusted via alsa-lib softvol plugin. That is, the volume attenuation is done in the user-space, not in the driver.

thanks,

Takashi

Hello.

It is actually a problem in a non-recent alsa-lib. With alsa-lib from hg it works fine, but breaks with 1.0.16.
The commit that introduced an incompatibility is this one:
http://hg-mirror.alsa-project.org/alsa-kernel/diff/26b0243ab4fa/drivers/pcsp/pcsp_lib.c
I certainly was not considering the maintenance problems it creates. :( Perhaps should we revert this commit for now, and reintroduce after the next alsa-lib release?

FYI, the alsa-lib fix is this one:
http://hg-mirror.alsa-project.org/alsa-lib/diff/8a980469cd71/src/conf/cards/PC-Speaker.conf

The problem happened because the softvol plugin doesn't support 8bit formats. So the above config change was needed.

Hello.

The attached patch adds back the compatibility code, allowing the driver to work with older alsa-libs. The removal was premature, it breaks the real-life configs, I am sorry about that.

Takashi, could you please apply? It is a straight-forward revert of:
http://hg-mirror.alsa-project.org/alsa-kernel/diff/26b0243ab4fa/drivers/pcsp/pcsp_lib.c

# HG changeset patch
# User Stas Sergeev <[email protected]>
# Date 1210960913 -14400
# Node ID 3887126bbd9ca422208e651d46f9f5385d409efe
# Parent 1ffcb28969441147a0480f0ad7bdc52093d1e4ee
snd-pcsp: put back the compatibility code for the older alsa-libs.

diff -r 1ffcb2896944 -r 3887126bbd9c drivers/pcsp/pcsp_lib.c
@@ -17,6 +17,8 @@ module_param(nforce_wa, bool, 0444);
 module_param(nforce_wa, bool, 0444);
 MODULE_PARM_DESC(nforce_wa, "Apply NForce chipset workaround "
 		"(expect bad sound)");
+
+#define DMIX_WANTS_S16	1
 
 static void pcsp_start_timer(unsigned long dummy)
 {

@@ -47,7 +49,7 @@ enum hrtimer_restart pcsp_do_timer(struc
 {
 	unsigned long flags;
 	unsigned char timer_cnt, val;
-	int periods_elapsed;
+	int fmt_size, periods_elapsed;
 	u64 ns;
 	size_t period_bytes, buffer_bytes;
 	struct snd_pcm_substream *substream;

@@ -92,8 +94,11 @@ enum hrtimer_restart pcsp_do_timer(struc
 		goto exit_nr_unlock2;
 
 	runtime = substream->runtime;
-	/* assume it is u8 mono */
-	val = runtime->dma_area[chip->playback_ptr];
+	fmt_size = snd_pcm_format_physical_width(runtime->format) >> 3;
+	/* assume it is mono! */
+	val = runtime->dma_area[chip->playback_ptr + fmt_size - 1];
+	if (snd_pcm_format_signed(runtime->format))
+		val ^= 0x80;
 	timer_cnt = val * CUR_DIV() / 256;
 
 	if (timer_cnt && chip->enable) {

@@ -111,7 +116,7 @@ enum hrtimer_restart pcsp_do_timer(struc
 
 	period_bytes = snd_pcm_lib_period_bytes(substream);
 	buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
-	chip->playback_ptr += PCSP_INDEX_INC();
+	chip->playback_ptr += PCSP_INDEX_INC() * fmt_size;
 	periods_elapsed = chip->playback_ptr - chip->period_ptr;
 	if (periods_elapsed < 0) {
 		printk(KERN_WARNING "PCSP: playback_ptr inconsistent "

@@ -270,7 +275,11 @@ static struct snd_pcm_hardware snd_pcsp_
 	.info = (SNDRV_PCM_INFO_INTERLEAVED |
 		 SNDRV_PCM_INFO_HALF_DUPLEX |
 		 SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID),
-	.formats = SNDRV_PCM_FMTBIT_U8,
+	.formats = (SNDRV_PCM_FMTBIT_U8
+#if DMIX_WANTS_S16
+		    | SNDRV_PCM_FMTBIT_S16_LE
+#endif
+	    ),
 	.rates = SNDRV_PCM_RATE_KNOT,
 	.rate_min = PCSP_DEFAULT_SRATE,
 	.rate_max = PCSP_DEFAULT_SRATE,

Thanks. Probably .26 material; many people will likely just disable the driver upon not seeing it work (and not re-enable it later also, meaning it might be a very largely unused driver) otherwise.

Rene.

That arrived in my inbox slightly to late :)

* Sat May 17 2008 Dave Jones <[email protected]>
- Disable CONFIG_SND_PCSP (#447039)

Problem solved :-)

More seriously, it doesn't seem that there's any way we can build this driver modular without it screwing up already working systems unless we cripple its MODULE_ALIAS to not autoload, allowing users who care about it (which will be in the minority anyway) to add it manually.

Dave

http://www.codemonkey.org.uk

Hello.

Maybe it is possible to adjust the
/etc/modprobe.d/modprobe.conf.dist
of module-init-tools and add there
something like the following?
options snd-pcsp index=10
It will then never became a default
driver.

Unless someone has 10 sound cards :-) (Sounds bizarre, but I never tire of seeing some of the creative situations our users get themselves into).

Something like this is probably the only real supportable way to do it though. It would be great if alsa took something like -1 to mean 'never make this default'.

But until that lands in a module-init-tools update, we're kind of stuck.

Dave

http://www.codemonkey.org.uk

Hello.

Yes, the hardcoded values sucks...

-1 seems to be already reserved for "use first free slot", but maybe it would be nice to reserve some value for the "movable" index. For example, the index -2 can mean "use the first free slot, but move to the next one when some other driver is registering with -1 or explicitly to that slot". Of course I have no idea whether this is possible and acceptable, but maybe the alsa guys can tell.

Well, they won't take 10 or any other value I guess...

... and for the obvious reasons this can't
work.

Hello.

Actually, I have just upgraded f8->f9, and guess what? Lost the sound... And not because of snd-pcsp, but rather because snd-hda-intel started to take the first slot and snd-intel8x0 takes the second. On f8 snd-hda-intel have never been loaded for me at all. I don't need it, it finds a HDA chip on an ATI video board, which it never did before.

So... it doesn't look like this problem is specific to snd-pcsp. Anyone can get into that trouble it seems.

At Sun, 18 May 2008 07:13:07 +0400,

You can better use slots option for snd module instead of specifying index in each driver for 2.6.25 or later kernels. That is,

options snd slots=snd-intel8x0,snd-hda-intel

will assign the specified drivers in the first two slots. And this means also that these two slots are reserved. The other drivers, e.g. a hotplugged usb-audio, won't be assigned in these slots even usb-audio is loaded before intel8x0.

See ALSA-Configuration.txt for details.

Takashi

Hello.

Thanks.
How about this:
options snd slots=!snd-pcsp
I guess implementing something like this, is asking for a troubles, but maybe this can be a chip solution for the snd-pcsp problem...

At Thu, 22 May 2008 08:38:08 +0400,

This sounds like an interesting idea. Will check later.

thanks,

Takashi

Hello.

I guess so, and in the description string we can probably add something to the effect of "READ HELP!".

Any utility will do.

That's because it is a bit broken in alsa-lib right now, more details and the fix here:
http://lkml.org/lkml/2008/5/11/172

Yeah - that old driver never worked with alsa anyway, so that removal is an overdue. :)

It will be handled properly by default with the next alsa-lib release. But the trivial fix on the above URL should work too.

I don't know if this would be considered too ugly a suggestion to put in the Kconfig description, but the suggestion in:

http://lkml.org/lkml/2008/5/11/172

To put the following in /etc/modprobe.conf:

options snd-pcsp index=2

Would probably avoid confusion for most users. It's more than a little bit hackish, and I imagine I can imagine hotplug/udev fanatics throwing up all over their keyboard, but short of having udev rules that run around editing user's ~/.asoundrc files, or creating some kind of system wide naming scheme so that people can use stable names in their alsa config files, this is going to be an, ah, "interesting" problem for various sound applications to deal with.

- Ted

Hello.

By description I did actually mean a menu string, not a help text.
In any case, here's what I mean, in an attached patch.

PS: please let us know whether the new PC-Speaker.conf allowed you to get any sound from it.

# HG changeset patch
# User Stas Sergeev <[email protected]> # Date 1210878004 -14400
# Node ID 26bbbefc222c5a7fffc15c34422ff0408a4d6dc3 # Parent 903c7be2316a6b892c8c20a0a8a6e21cd9a9ee8c
snd-pcsp: adjust help texts to frighten users.

diff -r 903c7be2316a -r 26bbbefc222c Kconfig
@@ -27,11 +27,6 @@ config SOUND
 	  after the PnP configuration is finished.  To do this, choose M here
 	  and read <file:Documentation/sound/oss/README.modules>; the module
 	  will be called soundcore.
-
-	  I'm told that even without a sound card, you can make your computer
-	  say more than an occasional beep, by programming the PC speaker.
-	  Kernel patches and supporting utilities to do that are in the pcsp
-	  package, available at <ftp://ftp.infradead.org/pub/pcsp/>.
 
 source "sound/oss/dmasound/Kconfig"
 

diff -r 903c7be2316a -r 26bbbefc222c drivers/Kconfig
@@ -5,7 +5,7 @@ menu "Generic devices"
 
 
 config SND_PCSP
-	tristate "PC-Speaker support"
+	tristate "PC-Speaker support (READ HELP!)"
 	depends on X86_PC && HIGH_RES_TIMERS
 	depends on SND
 	select SND_PCM

@@ -17,11 +17,21 @@ config SND_PCSP
 
 	  You can compile this as a module which will be called snd-pcsp.
 
+	  WARNING: if you already have a soundcard, enabling this
+	  driver may lead to a problem. Namely, it may get loaded
+	  before the other sound driver of yours, making the
+	  pc-speaker a default sound device. Which is likely not
+	  what you want. To make this driver play nicely with other
+	  sound driver, you can add this into your /etc/modprobe.conf:
+	  options snd-pcsp index=2
+
 	  You don't need this driver if you only want your pc-speaker to beep.
 	  You don't need this driver if you have a tablet piezo beeper
 	  in your PC instead of the real speaker.
 
-	  It should not hurt to say Y or M here in all other cases.
+	  Say N if you have a sound card.
+	  Say M if you don't.
+	  Say Y only if you really know what you do.
 
 config SND_PCSP_INPUT
 	def_bool y

Yep, it looks good to me.

I tried replacing it, but I'm still getting silence when I use "aplay -D plughw:0,0 /usr/share/sounds/login.wav". If I use "aplay -D hw:0,0", I still get the "aplay: set_params:900: Sample format non available" error message. This is with Ubuntu Gutsy; for a variety of reasons, I haven't yet updated my primary laptop to Hardy yet. I can try booting a bleeding edge kernel on my Hardy machine and see whether it works any better there.

- Ted

Hello.

You don't need to specify anything with the fixed conf. You probably even _should_ not. Could you please just try "aplay /usr/share/sounds/login.wav" or mpg123 or anything else the most usual way you do?
Oh, and it would be best to remove for the moment the custom /etc/asound.conf if any.

Well, yeah, it would be nice to have alsa-lib 1.0.16, which one is on Gutsy? The older ones may not support that driver even with the good config.

PS: your messages are a bit strange. When I press "Reply to All" in a thunderbird mailer, it sets all the e-mail addresses as "To:". And it includes my own address. And it includes your address twice. This is weird. I am fixing that by hands.
With all other messages, by pressing "reply to all", it composes the message with all addresses set to "Cc:", and only one is set to "To:", with my own address not included at all

OK, with my ~/.asoundrc file moved out of the way (but with the fixed config file installed):

# aplay /usr/share/sounds/login.wav 
ALSA lib pcm_direct.c:901:(snd_pcm_direct_initialize_slave) requested or auto-format is not available
ALSA lib pcm_dmix.c:876:(snd_pcm_dmix_open) unable to initialize slave

# aplay -D hw:0,0 /usr/share/sounds/login.wav 
Playing WAVE '/usr/share/sounds/login.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
aplay: set_params:900: Sample format non available

# aplay -D plughw:0 /usr/share/sounds/login.wav 
Playing WAVE '/usr/share/sounds/login.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
  <no sound, but aplay sits there as if it was sending sound to a muted
  speaker and exits after approximately the amount of time for the wav
  file would take to play>

Is moving ~/.asoundrc out of the way sufficient? Or do I need to reboot or logout/login again to clear something? I don't think there are any user space daemons involved here, but...

1.0.14. Yeah, it's over 12 months old.....

- Ted

Hmm, I don't know. I'm not setting a reply-to header. My e-mail messages do have an SMTP envelope from field of [email protected], but that shouldn't be visible to MUA's. (It just means that MTA's send bounce messages to [email protected], which I need to do since my outgoing e-mail path goes through thunk.org, and if I didn't do I might trip certain spam filters which check to see if the domain of the SMTP "MAIL FROM" matches the domain of the sending SMTP server.)

In any case, my outgoing RFC 822 message headers on my end looks like this:

To: Stas Sergeev <[email protected]>
Cc: Takashi Iwai <[email protected]>,
Linux Kernel Mailing List <[email protected]>, Roberto Oppedisano <[email protected]>
Bcc: [email protected]
Subject: Re: [patch] snd-pcsp: adjust help texts to frighten users Reply-To:
In-Reply-To: <[email protected]>

It might be interesting to see what you receive it on your end.

Hello.

Takashi, could you please apply the
attached patch?

It makes the snd-pcsp help text to
alert the user about the possible
problems.

# HG changeset patch
# User Stas Sergeev <[email protected]> # Date 1210878004 -14400
# Node ID 26bbbefc222c5a7fffc15c34422ff0408a4d6dc3 # Parent 903c7be2316a6b892c8c20a0a8a6e21cd9a9ee8c
snd-pcsp: adjust help texts to frighten users.

diff -r 903c7be2316a -r 26bbbefc222c Kconfig
@@ -27,11 +27,6 @@ config SOUND
 	  after the PnP configuration is finished.  To do this, choose M here
 	  and read <file:Documentation/sound/oss/README.modules>; the module
 	  will be called soundcore.
-
-	  I'm told that even without a sound card, you can make your computer
-	  say more than an occasional beep, by programming the PC speaker.
-	  Kernel patches and supporting utilities to do that are in the pcsp
-	  package, available at <ftp://ftp.infradead.org/pub/pcsp/>.
 
 source "sound/oss/dmasound/Kconfig"
 

diff -r 903c7be2316a -r 26bbbefc222c drivers/Kconfig
@@ -5,7 +5,7 @@ menu "Generic devices"
 
 
 config SND_PCSP
-	tristate "PC-Speaker support"
+	tristate "PC-Speaker support (READ HELP!)"
 	depends on X86_PC && HIGH_RES_TIMERS
 	depends on SND
 	select SND_PCM

@@ -17,11 +17,21 @@ config SND_PCSP
 
 	  You can compile this as a module which will be called snd-pcsp.
 
+	  WARNING: if you already have a soundcard, enabling this
+	  driver may lead to a problem. Namely, it may get loaded
+	  before the other sound driver of yours, making the
+	  pc-speaker a default sound device. Which is likely not
+	  what you want. To make this driver play nicely with other
+	  sound driver, you can add this into your /etc/modprobe.conf:
+	  options snd-pcsp index=2
+
 	  You don't need this driver if you only want your pc-speaker to beep.
 	  You don't need this driver if you have a tablet piezo beeper
 	  in your PC instead of the real speaker.
 
-	  It should not hurt to say Y or M here in all other cases.
+	  Say N if you have a sound card.
+	  Say M if you don't.
+	  Say Y only if you really know what you do.
 
 config SND_PCSP_INPUT
 	def_bool y