2.6.36-rc3-git5: Reported regressions 2.6.34 -> 2.6.35

2.6.36-rc3-git5: Reported regressions 2.6.34 -> 2.6.35

[Rafael J. Wysocki]

This message contains a list of some post-2.6.34 regressions introduced before
2.6.35, for which there are no fixes in the mainline known to the tracking team.
If any of them have been fixed already, please let us know.

If you know of any other unresolved post-2.6.34 regressions, please let us know
either and we'll add them to the list.  Also, please let us 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
  ----------------------------------------
  2010-09-12      135       26          25
  2010-08-30      124       38          34
  2010-08-01      100       27          23
  2010-07-23       94       33          25
  2010-07-09       79       45          37
  2010-06-21       46       37          26
  2010-06-09       15       13          10


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

Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=18272
Subject		: 2.6.35.*: horrible (exponential? >linear) slowdown to unusability (ACPI idle?)
Submitter	: Nix <nix@esperi.org.uk>
Date		: 2010-09-05 0:51 (8 days old)
First-Bad-Commit: http://git.kernel.org/linus/30a564be9d9554c168a654eddc2165869cc0d7bf
Message-ID	: <87zkvx2ese.fsf@spindle.srvr.nix>
References	: http://marc.info/?l=linux-kernel&m=128364994602942&w=2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=18202
Subject		: Microphone levels too low
Submitter	: Alexander Hunziker <alex.hunziker@rega-sense.ch>
Date		: 2010-09-09 22:20 (4 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=18032
Subject		: No sound on headphone jack
Submitter	: Alexander Hunziker <alex.hunziker@rega-sense.ch>
Date		: 2010-09-07 21:45 (6 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=17812
Subject		: Kernel completely frozen when memory is full
Submitter	: Mickey86 <mikael.cordon@gmail.com>
Date		: 2010-09-05 13:09 (8 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=17772
Subject		: Unable to locate IOAPIC for GSI *
Submitter	: zersaa <zersaa@gmail.com>
Date		: 2010-09-04 21:28 (9 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=17732
Subject		: [2.6.35.x regression] rcu_preempt_state stall warning and machine slow-downs
Submitter	: Matthias Dahl <ml_kernel@mortal-soul.de>
Date		: 2010-09-01 6:47 (12 days old)
Message-ID	: <201009010847.20236.ml_kernel@mortal-soul.de>
References	: http://marc.info/?l=linux-kernel&m=128332418629305&w=2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16771
Subject		: [Bisected Regression in 2.6.35] A full tmpfs filesystem causes hibernationto hang
Submitter	: M. Vefa Bicakci <bicave@superonline.com>
Date		: 2010-08-15 5:25 (29 days old)
First-Bad-Commit: http://git.kernel.org/linus/bb21c7ce18eff8e6e7877ca1d06c6db719376e3c
Message-ID	: <4C677A49.4030904@superonline.com>
References	: http://marc.info/?l=linux-kernel&m=128184995401968&w=2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16691
Subject		: IPW5100: iwlagn broken with 2.6.34.x to 2.6.35.2 update
Submitter	: Can Celasun <dcelasun@gmail.com>
Date		: 2010-08-21 08:28 (23 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16633
Subject		: ath5k + 2.6.35 x86 + hostapd - Failed to set channel
Submitter	: NiTr0 <nitr0@seti.kr.ua>
Date		: 2010-08-19 19:37 (25 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16614
Subject		: [2.6.35] usb 2.0 em28xx  kernel panic general protection fault: 0000 [#1] SMP          RIP: 0010:[<ffffffffa004fbc5>]  [<ffffffffa004fbc5>] em28xx_isoc_copy_vbi+0x62e/0x812 [em28xx]
Submitter	: Sander Eikelenboom <linux@eikelenboom.it>
Date		: 2010-08-10 22:12 (34 days old)
Message-ID	: <61936849.20100811001257@eikelenboom.it>
References	: http://marc.info/?l=linux-kernel&m=128152075830927&w=2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16562
Subject		: 2.6.35: cpu_idle bug report / on i7 870 cpu (x86_64)
Submitter	: Justin Piszcz <jpiszcz@lucidpixels.com>
Date		: 2010-08-06 22:09 (38 days old)
Message-ID	: <alpine.DEB.2.00.1008061800530.5241@p34.internal.lan>
References	: http://marc.info/?l=linux-kernel&m=128113260904048&w=2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16549
Subject		: 2.6.35: suspicious rcu_dereference_check() usage
Submitter	: Vladislav Bolkhovitin <vst@vlnb.net>
Date		: 2010-08-04 10:56 (40 days old)
Message-ID	: <4C594740.1090608@vlnb.net>
References	: http://marc.info/?l=linux-kernel&m=128091938215177&w=2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16537
Subject		: TREE_RCU hangs at boot
Submitter	: Rolf Eike Beer <eike-kernel@sf-tec.de>
Date		: 2010-08-07 12:18 (37 days old)
Handled-By	: Paul E. McKenney <paulmck@linux.vnet.ibm.com>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16532
Subject		: random suspend (S3) problems on Intel DG45ID board
Submitter	: Alexey Fisher <bug-track@fisher-privat.net>
Date		: 2010-08-07 08:55 (37 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16525
Subject		: unexpected high load since 2.6.35
Submitter	: MadLoisae@gmx.net <MadLoisae@gmx.net>
Date		: 2010-08-02 20:53 (42 days old)
Message-ID	: <4C573041.1070103@gmx.net>
References	: http://marc.info/?l=linux-kernel&m=128078243726655&w=2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16515
Subject		: [bisected] Radeon rv280 can't boot on kernel 2.6.35.
Submitter	: Albert Gall <ss3vdr@gmail.com>
Date		: 2010-08-04 16:10 (40 days old)
First-Bad-Commit: http://git.kernel.org/linus/https://bugzilla.kernel.org/attachment.cgi?id=27350
Handled-By	: Alex Deucher <alexdeucher@gmail.com>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16495
Subject		: Kernel 2.6.35 takes almost half an hour to boot
Submitter	: Claudio M. Camacho <claudiomkd@gmail.com>
Date		: 2010-08-02 17:16 (42 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16488
Subject		: [i915] Framebuffer ID error after suspend/hibernate leading to X crash
Submitter	: Milan Bouchet-Valat <nalimilan@club.fr>
Date		: 2010-08-01 08:55 (43 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16458
Subject		: Bluetooth disabled after resume
Submitter	: AttilaN <attila123456@gmail.com>
Date		: 2010-07-25 09:33 (50 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16380
Subject		: Loop devices act strangely in 2.6.35
Submitter	: Artem S. Tashkinov <t.artem@mailcity.com>
Date		: 2010-07-13 23:21 (62 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16322
Subject		: WARNING: at /arch/x86/include/asm/processor.h:1005 read_measured_perf_ctrs+0x5a/0x70()
Submitter	: boris64 <bugzilla.kernel.org@boris64.net>
Date		: 2010-07-01 13:54 (74 days old)
Handled-By	: H. Peter Anvin <hpa@zytor.com>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16265
Subject		: Why is kslowd accumulating so much CPU time?
Submitter	: Theodore Ts'o <tytso@mit.edu>
Date		: 2010-06-09 18:36 (96 days old)
First-Bad-Commit: http://git.kernel.org/linus/fbf81762e385d3d45acad057b654d56972acf58c
Message-ID	: <E1OMQ88-0002a1-Gb@closure.thunk.org>
References	: http://marc.info/?l=linux-kernel&m=127610857819033&w=4
		  http://bugs.freedesktop.org/show_bug.cgi?id=29536
Handled-By	: Chris Wilson <chris@chris-wilson.co.uk>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16228
Subject		: BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)
Submitter	: Brian Bloniarz <phunge0@hotmail.com>
Date		: 2010-06-16 17:57 (89 days old)
Handled-By	: Bjorn Helgaas <bjorn.helgaas@hp.com>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16221
Subject		: 2.6.35-rc2-git5 -- [drm:drm_mode_getfb] *ERROR* invalid framebuffer id
Submitter	: Miles Lane <miles.lane@gmail.com>
Date		: 2010-06-11 20:31 (94 days old)
Message-ID	: <AANLkTim0jVRyqkwlGOcrg_XTvUQwcBYfWJX-aRzkkrLG@mail.gmail.com>
References	: http://marc.info/?l=linux-kernel&m=127628828119623&w=2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16184
Subject		: Container, X86-64, i386, iptables rule
Submitter	: Jean-Marc Pigeon <jmp@safe.ca>
Date		: 2010-06-12 04:17 (93 days old)
Handled-By	: Patrick McHardy <kaber@trash.net>


Regressions with patches
------------------------

Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16312
Subject		: WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty
Submitter	: Zdenek Kabelac <zdenek.kabelac@gmail.com>
Date		: 2010-06-28 9:40 (77 days old)
Message-ID	: <AANLkTin24fr5O4_q5Xbo9Y_NKkEmtcp6Hgmr9_4qXaFz@mail.gmail.com>
References	: http://marc.info/?l=linux-kernel&m=127771804806465&w=2
		  http://lkml.indiana.edu/hypermail/linux/kernel/1007.3/00884.html
Handled-By	: Jan Kara <jack@suse.cz>
Patch		: https://bugzilla.kernel.org/attachment.cgi?id=27272


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 introduced
between 2.6.34 and 2.6.35, unresolved as well as resolved, at:

http://bugzilla.kernel.org/show_bug.cgi?id=16055

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

Thanks!

[Bug #16184] Container, X86-64, i386, iptables rule

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16184
Subject		: Container, X86-64, i386, iptables rule
Submitter	: Jean-Marc Pigeon <jmp@safe.ca>
Date		: 2010-06-12 04:17 (93 days old)
Handled-By	: Patrick McHardy <kaber@trash.net>

[Bug #16184] Container, X86-64, i386, iptables rule

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16184
Subject		: Container, X86-64, i386, iptables rule
Submitter	: Jean-Marc Pigeon <jmp-4qkeo2rQ0gg@public.gmane.org>
Date		: 2010-06-12 04:17 (93 days old)
Handled-By	: Patrick McHardy <kaber-dcUjhNyLwpNeoWH0uzbU5w@public.gmane.org>

[Bug #16221] 2.6.35-rc2-git5 -- [drm:drm_mode_getfb] *ERROR* invalid framebuffer id

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16221
Subject		: 2.6.35-rc2-git5 -- [drm:drm_mode_getfb] *ERROR* invalid framebuffer id
Submitter	: Miles Lane <miles.lane@gmail.com>
Date		: 2010-06-11 20:31 (94 days old)
Message-ID	: <AANLkTim0jVRyqkwlGOcrg_XTvUQwcBYfWJX-aRzkkrLG@mail.gmail.com>
References	: http://marc.info/?l=linux-kernel&m=127628828119623&w=2

[Bug #16265] Why is kslowd accumulating so much CPU time?

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16265
Subject		: Why is kslowd accumulating so much CPU time?
Submitter	: Theodore Ts'o <tytso@mit.edu>
Date		: 2010-06-09 18:36 (96 days old)
First-Bad-Commit: http://git.kernel.org/linus/fbf81762e385d3d45acad057b654d56972acf58c
Message-ID	: <E1OMQ88-0002a1-Gb@closure.thunk.org>
References	: http://marc.info/?l=linux-kernel&m=127610857819033&w=4
		  http://bugs.freedesktop.org/show_bug.cgi?id=29536
Handled-By	: Chris Wilson <chris@chris-wilson.co.uk>

[Bug #16322] WARNING: at /arch/x86/include/asm/processor.h:1005 read_measured_perf_ctrs+0x5a/0x70()

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16322
Subject		: WARNING: at /arch/x86/include/asm/processor.h:1005 read_measured_perf_ctrs+0x5a/0x70()
Submitter	: boris64 <bugzilla.kernel.org@boris64.net>
Date		: 2010-07-01 13:54 (74 days old)
Handled-By	: H. Peter Anvin <hpa@zytor.com>

[Bug #16228] BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16228
Subject		: BUG/boot failure on Dell Precision T3500 (pci/ahci_stop_engine)
Submitter	: Brian Bloniarz <phunge0@hotmail.com>
Date		: 2010-06-16 17:57 (89 days old)
Handled-By	: Bjorn Helgaas <bjorn.helgaas@hp.com>

[Bug #16380] Loop devices act strangely in 2.6.35

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16380
Subject		: Loop devices act strangely in 2.6.35
Submitter	: Artem S. Tashkinov <t.artem@mailcity.com>
Date		: 2010-07-13 23:21 (62 days old)

[Bug #16458] Bluetooth disabled after resume

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16458
Subject		: Bluetooth disabled after resume
Submitter	: AttilaN <attila123456@gmail.com>
Date		: 2010-07-25 09:33 (50 days old)

[Bug #16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16312
Subject		: WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty
Submitter	: Zdenek Kabelac <zdenek.kabelac@gmail.com>
Date		: 2010-06-28 9:40 (77 days old)
Message-ID	: <AANLkTin24fr5O4_q5Xbo9Y_NKkEmtcp6Hgmr9_4qXaFz@mail.gmail.com>
References	: http://marc.info/?l=linux-kernel&m=127771804806465&w=2
		  http://lkml.indiana.edu/hypermail/linux/kernel/1007.3/00884.html
Handled-By	: Jan Kara <jack@suse.cz>
Patch		: https://bugzilla.kernel.org/attachment.cgi?id=27272

[Bug #16221] 2.6.35-rc2-git5 -- [drm:drm_mode_getfb] *ERROR* invalid framebuffer id

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16221
Subject		: 2.6.35-rc2-git5 -- [drm:drm_mode_getfb] *ERROR* invalid framebuffer id
Submitter	: Miles Lane <miles.lane-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2010-06-11 20:31 (94 days old)
Message-ID	: <AANLkTim0jVRyqkwlGOcrg_XTvUQwcBYfWJX-aRzkkrLG-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
References	: http://marc.info/?l=linux-kernel&m=127628828119623&w=2

[Bug #16458] Bluetooth disabled after resume

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16458
Subject		: Bluetooth disabled after resume
Submitter	: AttilaN <attila123456-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2010-07-25 09:33 (50 days old)

[Bug #16525] unexpected high load since 2.6.35

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16525
Subject		: unexpected high load since 2.6.35
Submitter	: MadLoisae@gmx.net <MadLoisae@gmx.net>
Date		: 2010-08-02 20:53 (42 days old)
Message-ID	: <4C573041.1070103@gmx.net>
References	: http://marc.info/?l=linux-kernel&m=128078243726655&w=2

[Bug #16495] Kernel 2.6.35 takes almost half an hour to boot

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16495
Subject		: Kernel 2.6.35 takes almost half an hour to boot
Submitter	: Claudio M. Camacho <claudiomkd@gmail.com>
Date		: 2010-08-02 17:16 (42 days old)

[Bug #16515] [bisected] Radeon rv280 can't boot on kernel 2.6.35.

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16515
Subject		: [bisected] Radeon rv280 can't boot on kernel 2.6.35.
Submitter	: Albert Gall <ss3vdr@gmail.com>
Date		: 2010-08-04 16:10 (40 days old)
First-Bad-Commit: http://git.kernel.org/linus/https://bugzilla.kernel.org/attachment.cgi?id=27350
Handled-By	: Alex Deucher <alexdeucher@gmail.com>

[Bug #16488] [i915] Framebuffer ID error after suspend/hibernate leading to X crash

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16488
Subject		: [i915] Framebuffer ID error after suspend/hibernate leading to X crash
Submitter	: Milan Bouchet-Valat <nalimilan@club.fr>
Date		: 2010-08-01 08:55 (43 days old)

[Bug #16525] unexpected high load since 2.6.35

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16525
Subject		: unexpected high load since 2.6.35
Submitter	: MadLoisae-hi6Y0CQ0nG0@public.gmane.org <MadLoisae-hi6Y0CQ0nG0@public.gmane.org>
Date		: 2010-08-02 20:53 (42 days old)
Message-ID	: <4C573041.1070103-hi6Y0CQ0nG0@public.gmane.org>
References	: http://marc.info/?l=linux-kernel&m=128078243726655&w=2

[Bug #16488] [i915] Framebuffer ID error after suspend/hibernate leading to X crash

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16488
Subject		: [i915] Framebuffer ID error after suspend/hibernate leading to X crash
Submitter	: Milan Bouchet-Valat <nalimilan-pqIVbhRXszc@public.gmane.org>
Date		: 2010-08-01 08:55 (43 days old)

[Bug #16549] 2.6.35: suspicious rcu_dereference_check() usage

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16549
Subject		: 2.6.35: suspicious rcu_dereference_check() usage
Submitter	: Vladislav Bolkhovitin <vst@vlnb.net>
Date		: 2010-08-04 10:56 (40 days old)
Message-ID	: <4C594740.1090608@vlnb.net>
References	: http://marc.info/?l=linux-kernel&m=128091938215177&w=2

[Bug #16537] TREE_RCU hangs at boot

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16537
Subject		: TREE_RCU hangs at boot
Submitter	: Rolf Eike Beer <eike-kernel@sf-tec.de>
Date		: 2010-08-07 12:18 (37 days old)
Handled-By	: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

[Bug #16532] random suspend (S3) problems on Intel DG45ID board

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16532
Subject		: random suspend (S3) problems on Intel DG45ID board
Submitter	: Alexey Fisher <bug-track@fisher-privat.net>
Date		: 2010-08-07 08:55 (37 days old)

[Bug #16633] ath5k + 2.6.35 x86 + hostapd - Failed to set channel

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16633
Subject		: ath5k + 2.6.35 x86 + hostapd - Failed to set channel
Submitter	: NiTr0 <nitr0@seti.kr.ua>
Date		: 2010-08-19 19:37 (25 days old)

[Bug #16771] [Bisected Regression in 2.6.35] A full tmpfs filesystem causes hibernationto hang

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16771
Subject		: [Bisected Regression in 2.6.35] A full tmpfs filesystem causes hibernationto hang
Submitter	: M. Vefa Bicakci <bicave@superonline.com>
Date		: 2010-08-15 5:25 (29 days old)
First-Bad-Commit: http://git.kernel.org/linus/bb21c7ce18eff8e6e7877ca1d06c6db719376e3c
Message-ID	: <4C677A49.4030904@superonline.com>
References	: http://marc.info/?l=linux-kernel&m=128184995401968&w=2

[Bug #16691] IPW5100: iwlagn broken with 2.6.34.x to 2.6.35.2 update

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16691
Subject		: IPW5100: iwlagn broken with 2.6.34.x to 2.6.35.2 update
Submitter	: Can Celasun <dcelasun@gmail.com>
Date		: 2010-08-21 08:28 (23 days old)

[Bug #16614] [2.6.35] usb 2.0 em28xx kernel panic general protection fault: 0000 [#1] SMP RIP: 0010:[<ffffffffa004fbc5>] [<ffffffffa004fbc5>] em28xx_isoc_copy_vbi+0x62e/0x812 [em28xx]

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16614
Subject		: [2.6.35] usb 2.0 em28xx  kernel panic general protection fault: 0000 [#1] SMP          RIP: 0010:[<ffffffffa004fbc5>]  [<ffffffffa004fbc5>] em28xx_isoc_copy_vbi+0x62e/0x812 [em28xx]
Submitter	: Sander Eikelenboom <linux@eikelenboom.it>
Date		: 2010-08-10 22:12 (34 days old)
Message-ID	: <61936849.20100811001257@eikelenboom.it>
References	: http://marc.info/?l=linux-kernel&m=128152075830927&w=2

[Bug #16562] 2.6.35: cpu_idle bug report / on i7 870 cpu (x86_64)

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16562
Subject		: 2.6.35: cpu_idle bug report / on i7 870 cpu (x86_64)
Submitter	: Justin Piszcz <jpiszcz@lucidpixels.com>
Date		: 2010-08-06 22:09 (38 days old)
Message-ID	: <alpine.DEB.2.00.1008061800530.5241@p34.internal.lan>
References	: http://marc.info/?l=linux-kernel&m=128113260904048&w=2

[Bug #16771] [Bisected Regression in 2.6.35] A full tmpfs filesystem causes hibernationto hang

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16771
Subject		: [Bisected Regression in 2.6.35] A full tmpfs filesystem causes hibernationto hang
Submitter	: M. Vefa Bicakci <bicave-qUEp0r/b3FNfOZc0+OmrVg@public.gmane.org>
Date		: 2010-08-15 5:25 (29 days old)
First-Bad-Commit: http://git.kernel.org/linus/bb21c7ce18eff8e6e7877ca1d06c6db719376e3c
Message-ID	: <4C677A49.4030904-qUEp0r/b3FNfOZc0+OmrVg@public.gmane.org>
References	: http://marc.info/?l=linux-kernel&m=128184995401968&w=2

[Bug #16562] 2.6.35: cpu_idle bug report / on i7 870 cpu (x86_64)

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16562
Subject		: 2.6.35: cpu_idle bug report / on i7 870 cpu (x86_64)
Submitter	: Justin Piszcz <jpiszcz-BP4nVm5VUdNhbmWW9KSYcQ@public.gmane.org>
Date		: 2010-08-06 22:09 (38 days old)
Message-ID	: <alpine.DEB.2.00.1008061800530.5241-0qmrozcXWo8bm2hyYBkBBg@public.gmane.org>
References	: http://marc.info/?l=linux-kernel&m=128113260904048&w=2

[Bug #17732] [2.6.35.x regression] rcu_preempt_state stall warning and machine slow-downs

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=17732
Subject		: [2.6.35.x regression] rcu_preempt_state stall warning and machine slow-downs
Submitter	: Matthias Dahl <ml_kernel@mortal-soul.de>
Date		: 2010-09-01 6:47 (12 days old)
Message-ID	: <201009010847.20236.ml_kernel@mortal-soul.de>
References	: http://marc.info/?l=linux-kernel&m=128332418629305&w=2

[Bug #17772] Unable to locate IOAPIC for GSI *

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=17772
Subject		: Unable to locate IOAPIC for GSI *
Submitter	: zersaa <zersaa@gmail.com>
Date		: 2010-09-04 21:28 (9 days old)

[Bug #17812] Kernel completely frozen when memory is full

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=17812
Subject		: Kernel completely frozen when memory is full
Submitter	: Mickey86 <mikael.cordon@gmail.com>
Date		: 2010-09-05 13:09 (8 days old)

[Bug #17812] Kernel completely frozen when memory is full

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=17812
Subject		: Kernel completely frozen when memory is full
Submitter	: Mickey86 <mikael.cordon-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2010-09-05 13:09 (8 days old)

[Bug #18032] No sound on headphone jack

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=18032
Subject		: No sound on headphone jack
Submitter	: Alexander Hunziker <alex.hunziker@rega-sense.ch>
Date		: 2010-09-07 21:45 (6 days old)

[Bug #18202] Microphone levels too low

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=18202
Subject		: Microphone levels too low
Submitter	: Alexander Hunziker <alex.hunziker@rega-sense.ch>
Date		: 2010-09-09 22:20 (4 days old)

[Bug #18272] 2.6.35.*: horrible (exponential? >linear) slowdown to unusability (ACPI idle?)

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=18272
Subject		: 2.6.35.*: horrible (exponential? >linear) slowdown to unusability (ACPI idle?)
Submitter	: Nix <nix@esperi.org.uk>
Date		: 2010-09-05 0:51 (8 days old)
First-Bad-Commit: http://git.kernel.org/linus/30a564be9d9554c168a654eddc2165869cc0d7bf
Message-ID	: <87zkvx2ese.fsf@spindle.srvr.nix>
References	: http://marc.info/?l=linux-kernel&m=128364994602942&w=2

Re: [Bug #17772] Unable to locate IOAPIC for GSI *

[Ingo Molnar]

* Rafael J. Wysocki <rjw@sisk.pl> wrote:

> This message has been generated automatically as a part of a report
> of regressions introduced between 2.6.34 and 2.6.35.
> 
> The following bug entry is on the current list of known regressions
> introduced between 2.6.34 and 2.6.35.  Please verify if it still should
> be listed and let the tracking team know (either way).
> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=17772
> Subject		: Unable to locate IOAPIC for GSI *
> Submitter	: zersaa <zersaa@gmail.com>
> Date		: 2010-09-04 21:28 (9 days old)

this is an error message introduced via ACPI commit:

| commit 2a4ab640d3c28c2952967e5f63ea495555bf2a5f
| Author: Feng Tang <feng.tang@intel.com>
| Date:   Tue Jul 7 23:01:15 2009 -0400
|
|     ACPI, x86: expose some IO-APIC routines when CONFIG_ACPI=n

It's not clear from the bugzilla entry whether it's just a new error 
message, or an actual boot failure. It appears to me it's just a new 
message - i.e. not a regression.

Thanks,

	Ingo

Re: [Bug #17772] Unable to locate IOAPIC for GSI *

[Ingo Molnar]

* Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:

> This message has been generated automatically as a part of a report
> of regressions introduced between 2.6.34 and 2.6.35.
> 
> The following bug entry is on the current list of known regressions
> introduced between 2.6.34 and 2.6.35.  Please verify if it still should
> be listed and let the tracking team know (either way).
> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=17772
> Subject		: Unable to locate IOAPIC for GSI *
> Submitter	: zersaa <zersaa-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> Date		: 2010-09-04 21:28 (9 days old)

this is an error message introduced via ACPI commit:

| commit 2a4ab640d3c28c2952967e5f63ea495555bf2a5f
| Author: Feng Tang <feng.tang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
| Date:   Tue Jul 7 23:01:15 2009 -0400
|
|     ACPI, x86: expose some IO-APIC routines when CONFIG_ACPI=n

It's not clear from the bugzilla entry whether it's just a new error 
message, or an actual boot failure. It appears to me it's just a new 
message - i.e. not a regression.

Thanks,

	Ingo

Re: [Bug #17772] Unable to locate IOAPIC for GSI *

[Yinghai Lu]

On 09/12/2010 01:29 PM, Ingo Molnar wrote:
> 
> * Rafael J. Wysocki <rjw@sisk.pl> wrote:
> 
>> This message has been generated automatically as a part of a report
>> of regressions introduced between 2.6.34 and 2.6.35.
>>
>> The following bug entry is on the current list of known regressions
>> introduced between 2.6.34 and 2.6.35.  Please verify if it still should
>> be listed and let the tracking team know (either way).
>>
>>
>> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=17772
>> Subject		: Unable to locate IOAPIC for GSI *
>> Submitter	: zersaa <zersaa@gmail.com>
>> Date		: 2010-09-04 21:28 (9 days old)
> 
> this is an error message introduced via ACPI commit:
> 
> | commit 2a4ab640d3c28c2952967e5f63ea495555bf2a5f
> | Author: Feng Tang <feng.tang@intel.com>
> | Date:   Tue Jul 7 23:01:15 2009 -0400
> |
> |     ACPI, x86: expose some IO-APIC routines when CONFIG_ACPI=n
> 
> It's not clear from the bugzilla entry whether it's just a new error 
> message, or an actual boot failure. It appears to me it's just a new 
> message - i.e. not a regression.
> 

can you post whole bootlog with "debug apic=debug"?

Thanks

Yinghai

Re: [Bug #17772] Unable to locate IOAPIC for GSI *

[Yinghai Lu]

On 09/12/2010 01:29 PM, Ingo Molnar wrote:
> 
> * Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> 
>> This message has been generated automatically as a part of a report
>> of regressions introduced between 2.6.34 and 2.6.35.
>>
>> The following bug entry is on the current list of known regressions
>> introduced between 2.6.34 and 2.6.35.  Please verify if it still should
>> be listed and let the tracking team know (either way).
>>
>>
>> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=17772
>> Subject		: Unable to locate IOAPIC for GSI *
>> Submitter	: zersaa <zersaa-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>> Date		: 2010-09-04 21:28 (9 days old)
> 
> this is an error message introduced via ACPI commit:
> 
> | commit 2a4ab640d3c28c2952967e5f63ea495555bf2a5f
> | Author: Feng Tang <feng.tang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
> | Date:   Tue Jul 7 23:01:15 2009 -0400
> |
> |     ACPI, x86: expose some IO-APIC routines when CONFIG_ACPI=n
> 
> It's not clear from the bugzilla entry whether it's just a new error 
> message, or an actual boot failure. It appears to me it's just a new 
> message - i.e. not a regression.
> 

can you post whole bootlog with "debug apic=debug"?

Thanks

Yinghai

Re: [Bug #16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[Jan Kara]

  Hi,

On Sun 12-09-10 21:08:40, Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of regressions introduced between 2.6.34 and 2.6.35.
> 
> The following bug entry is on the current list of known regressions
> introduced between 2.6.34 and 2.6.35.  Please verify if it still should
> be listed and let the tracking team know (either way).
> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16312
> Subject		: WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty
> Submitter	: Zdenek Kabelac <zdenek.kabelac@gmail.com>
> Date		: 2010-06-28 9:40 (77 days old)
> Message-ID	: <AANLkTin24fr5O4_q5Xbo9Y_NKkEmtcp6Hgmr9_4qXaFz@mail.gmail.com>
> References	: http://marc.info/?l=linux-kernel&m=127771804806465&w=2
> 		  http://lkml.indiana.edu/hypermail/linux/kernel/1007.3/00884.html
> Handled-By	: Jan Kara <jack@suse.cz>
> Patch		: https://bugzilla.kernel.org/attachment.cgi?id=27272
  Sorry, it isn't fixed yet. Christoph wanted to do the patch a bit
differently and I was busy with other work...

									Honza
-- 
Jan Kara <jack@suse.cz>
SUSE Labs, CR

Re: [Bug #16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[Jan Kara]

  Hi,

On Sun 12-09-10 21:08:40, Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of regressions introduced between 2.6.34 and 2.6.35.
> 
> The following bug entry is on the current list of known regressions
> introduced between 2.6.34 and 2.6.35.  Please verify if it still should
> be listed and let the tracking team know (either way).
> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16312
> Subject		: WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty
> Submitter	: Zdenek Kabelac <zdenek.kabelac-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> Date		: 2010-06-28 9:40 (77 days old)
> Message-ID	: <AANLkTin24fr5O4_q5Xbo9Y_NKkEmtcp6Hgmr9_4qXaFz-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
> References	: http://marc.info/?l=linux-kernel&m=127771804806465&w=2
> 		  http://lkml.indiana.edu/hypermail/linux/kernel/1007.3/00884.html
> Handled-By	: Jan Kara <jack-AlSwsSmVLrQ@public.gmane.org>
> Patch		: https://bugzilla.kernel.org/attachment.cgi?id=27272
  Sorry, it isn't fixed yet. Christoph wanted to do the patch a bit
differently and I was busy with other work...

									Honza
-- 
Jan Kara <jack-AlSwsSmVLrQ@public.gmane.org>
SUSE Labs, CR

Re: [Bug #16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[Rafael J. Wysocki]

On Monday, September 13, 2010, Jan Kara wrote:
>   Hi,
> 
> On Sun 12-09-10 21:08:40, Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of regressions introduced between 2.6.34 and 2.6.35.
> > 
> > The following bug entry is on the current list of known regressions
> > introduced between 2.6.34 and 2.6.35.  Please verify if it still should
> > be listed and let the tracking team know (either way).
> > 
> > 
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16312
> > Subject		: WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty
> > Submitter	: Zdenek Kabelac <zdenek.kabelac@gmail.com>
> > Date		: 2010-06-28 9:40 (77 days old)
> > Message-ID	: <AANLkTin24fr5O4_q5Xbo9Y_NKkEmtcp6Hgmr9_4qXaFz@mail.gmail.com>
> > References	: http://marc.info/?l=linux-kernel&m=127771804806465&w=2
> > 		  http://lkml.indiana.edu/hypermail/linux/kernel/1007.3/00884.html
> > Handled-By	: Jan Kara <jack@suse.cz>
> > Patch		: https://bugzilla.kernel.org/attachment.cgi?id=27272
>   Sorry, it isn't fixed yet. Christoph wanted to do the patch a bit
> differently and I was busy with other work...

OK, thanks for the update.

Rafael

Re: [Bug #16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[Rafael J. Wysocki]

On Monday, September 13, 2010, Jan Kara wrote:
>   Hi,
> 
> On Sun 12-09-10 21:08:40, Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of regressions introduced between 2.6.34 and 2.6.35.
> > 
> > The following bug entry is on the current list of known regressions
> > introduced between 2.6.34 and 2.6.35.  Please verify if it still should
> > be listed and let the tracking team know (either way).
> > 
> > 
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16312
> > Subject		: WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty
> > Submitter	: Zdenek Kabelac <zdenek.kabelac-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> > Date		: 2010-06-28 9:40 (77 days old)
> > Message-ID	: <AANLkTin24fr5O4_q5Xbo9Y_NKkEmtcp6Hgmr9_4qXaFz-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
> > References	: http://marc.info/?l=linux-kernel&m=127771804806465&w=2
> > 		  http://lkml.indiana.edu/hypermail/linux/kernel/1007.3/00884.html
> > Handled-By	: Jan Kara <jack-AlSwsSmVLrQ@public.gmane.org>
> > Patch		: https://bugzilla.kernel.org/attachment.cgi?id=27272
>   Sorry, it isn't fixed yet. Christoph wanted to do the patch a bit
> differently and I was busy with other work...

OK, thanks for the update.

Rafael

Re: [Bug #16537] TREE_RCU hangs at boot

[Paul E. McKenney]

On Sun, Sep 12, 2010 at 09:08:42PM +0200, Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of regressions introduced between 2.6.34 and 2.6.35.
> 
> The following bug entry is on the current list of known regressions
> introduced between 2.6.34 and 2.6.35.  Please verify if it still should
> be listed and let the tracking team know (either way).
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16537
> Subject		: TREE_RCU hangs at boot
> Submitter	: Rolf Eike Beer <eike-kernel@sf-tec.de>
> Date		: 2010-08-07 12:18 (37 days old)
> Handled-By	: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

I cannot reproduce this.  The function that is claimed to hang contains
only printk()s.  I have asked the guys who can actually reproduce it
to try a later kernel, and will let you know how this goes.

If you cannot trust printk(), who can you trust?  ;-)

							Thanx, Paul

Re: [Bug #16537] TREE_RCU hangs at boot

[Paul E. McKenney]

On Sun, Sep 12, 2010 at 09:08:42PM +0200, Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of regressions introduced between 2.6.34 and 2.6.35.
> 
> The following bug entry is on the current list of known regressions
> introduced between 2.6.34 and 2.6.35.  Please verify if it still should
> be listed and let the tracking team know (either way).
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16537
> Subject		: TREE_RCU hangs at boot
> Submitter	: Rolf Eike Beer <eike-kernel-F+mm6HnICJmzQB+pC5nmwQ@public.gmane.org>
> Date		: 2010-08-07 12:18 (37 days old)
> Handled-By	: Paul E. McKenney <paulmck-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>

I cannot reproduce this.  The function that is claimed to hang contains
only printk()s.  I have asked the guys who can actually reproduce it
to try a later kernel, and will let you know how this goes.

If you cannot trust printk(), who can you trust?  ;-)

							Thanx, Paul

Re: [Bug #16537] TREE_RCU hangs at boot

[Rolf Eike Beer]

[-- Attachment #1: Type: Text/Plain, Size: 1231 bytes --]

Paul E. McKenney wrote:
> On Sun, Sep 12, 2010 at 09:08:42PM +0200, Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of regressions introduced between 2.6.34 and 2.6.35.
> > 
> > The following bug entry is on the current list of known regressions
> > introduced between 2.6.34 and 2.6.35.  Please verify if it still should
> > be listed and let the tracking team know (either way).
> > 
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16537
> > Subject		: TREE_RCU hangs at boot
> > Submitter	: Rolf Eike Beer <eike-kernel@sf-tec.de>
> > Date		: 2010-08-07 12:18 (37 days old)
> > Handled-By	: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
> 
> I cannot reproduce this.  The function that is claimed to hang contains
> only printk()s.  I have asked the guys who can actually reproduce it
> to try a later kernel, and will let you know how this goes.
> 
> If you cannot trust printk(), who can you trust?  ;-)

I suspect that it is related to:

http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.35.y.git;a=commit;h=5a8477871f0b45664eedfa352c3942093408a169

I'll try to test plain 2.6.35 with this patch and see it this works.

Eike

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Re: [Bug #16537] TREE_RCU hangs at boot

[Rolf Eike Beer]

[-- Attachment #1: Type: Text/Plain, Size: 1292 bytes --]

Paul E. McKenney wrote:
> On Sun, Sep 12, 2010 at 09:08:42PM +0200, Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of regressions introduced between 2.6.34 and 2.6.35.
> > 
> > The following bug entry is on the current list of known regressions
> > introduced between 2.6.34 and 2.6.35.  Please verify if it still should
> > be listed and let the tracking team know (either way).
> > 
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16537
> > Subject		: TREE_RCU hangs at boot
> > Submitter	: Rolf Eike Beer <eike-kernel-F+mm6HnICJmzQB+pC5nmwQ@public.gmane.org>
> > Date		: 2010-08-07 12:18 (37 days old)
> > Handled-By	: Paul E. McKenney <paulmck-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
> 
> I cannot reproduce this.  The function that is claimed to hang contains
> only printk()s.  I have asked the guys who can actually reproduce it
> to try a later kernel, and will let you know how this goes.
> 
> If you cannot trust printk(), who can you trust?  ;-)

I suspect that it is related to:

http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.35.y.git;a=commit;h=5a8477871f0b45664eedfa352c3942093408a169

I'll try to test plain 2.6.35 with this patch and see it this works.

Eike

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Re: [Bug #16537] TREE_RCU hangs at boot

[Paul E. McKenney]

On Mon, Sep 20, 2010 at 09:20:27PM +0200, Rolf Eike Beer wrote:
> Paul E. McKenney wrote:
> > On Sun, Sep 12, 2010 at 09:08:42PM +0200, Rafael J. Wysocki wrote:
> > > This message has been generated automatically as a part of a report
> > > of regressions introduced between 2.6.34 and 2.6.35.
> > > 
> > > The following bug entry is on the current list of known regressions
> > > introduced between 2.6.34 and 2.6.35.  Please verify if it still should
> > > be listed and let the tracking team know (either way).
> > > 
> > > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16537
> > > Subject		: TREE_RCU hangs at boot
> > > Submitter	: Rolf Eike Beer <eike-kernel@sf-tec.de>
> > > Date		: 2010-08-07 12:18 (37 days old)
> > > Handled-By	: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
> > 
> > I cannot reproduce this.  The function that is claimed to hang contains
> > only printk()s.  I have asked the guys who can actually reproduce it
> > to try a later kernel, and will let you know how this goes.
> > 
> > If you cannot trust printk(), who can you trust?  ;-)
> 
> I suspect that it is related to:
> 
> http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.35.y.git;a=commit;h=5a8477871f0b45664eedfa352c3942093408a169
> 
> I'll try to test plain 2.6.35 with this patch and see it this works.

That would explain my utter failure to reproduce this bug -- I don't have
a PA-RISC system.  ;-)

							Thanx, Paul

Re: [Bug #16537] TREE_RCU hangs at boot

[Paul E. McKenney]

On Mon, Sep 20, 2010 at 11:26:27AM -0700, Paul E. McKenney wrote:
> On Sun, Sep 12, 2010 at 09:08:42PM +0200, Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of regressions introduced between 2.6.34 and 2.6.35.
> > 
> > The following bug entry is on the current list of known regressions
> > introduced between 2.6.34 and 2.6.35.  Please verify if it still should
> > be listed and let the tracking team know (either way).
> > 
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16537
> > Subject		: TREE_RCU hangs at boot
> > Submitter	: Rolf Eike Beer <eike-kernel@sf-tec.de>
> > Date		: 2010-08-07 12:18 (37 days old)
> > Handled-By	: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
> 
> I cannot reproduce this.  The function that is claimed to hang contains
> only printk()s.  I have asked the guys who can actually reproduce it
> to try a later kernel, and will let you know how this goes.
> 
> If you cannot trust printk(), who can you trust?  ;-)

It turns out that this problem is due to tab processing in the PA-RISC
firmware, which certainly explains my inability to reproduce it.  It
turns out that it is fixed by:

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=d9b68e5e88248bb24fd4e455588bea1d56108fd6

So we can close this regression.

Many thanks to Guy Martin <gmsoft@tuxicoman.be> for much help with
this!!!

							Thanx, Paul

Re: [Bug #16537] TREE_RCU hangs at boot

[Rafael J. Wysocki]

On Tuesday, September 21, 2010, Paul E. McKenney wrote:
> On Mon, Sep 20, 2010 at 11:26:27AM -0700, Paul E. McKenney wrote:
> > On Sun, Sep 12, 2010 at 09:08:42PM +0200, Rafael J. Wysocki wrote:
> > > This message has been generated automatically as a part of a report
> > > of regressions introduced between 2.6.34 and 2.6.35.
> > > 
> > > The following bug entry is on the current list of known regressions
> > > introduced between 2.6.34 and 2.6.35.  Please verify if it still should
> > > be listed and let the tracking team know (either way).
> > > 
> > > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16537
> > > Subject		: TREE_RCU hangs at boot
> > > Submitter	: Rolf Eike Beer <eike-kernel@sf-tec.de>
> > > Date		: 2010-08-07 12:18 (37 days old)
> > > Handled-By	: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
> > 
> > I cannot reproduce this.  The function that is claimed to hang contains
> > only printk()s.  I have asked the guys who can actually reproduce it
> > to try a later kernel, and will let you know how this goes.
> > 
> > If you cannot trust printk(), who can you trust?  ;-)
> 
> It turns out that this problem is due to tab processing in the PA-RISC
> firmware, which certainly explains my inability to reproduce it.  It
> turns out that it is fixed by:
> 
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=d9b68e5e88248bb24fd4e455588bea1d56108fd6
> 
> So we can close this regression.
> 
> Many thanks to Guy Martin <gmsoft@tuxicoman.be> for much help with
> this!!!

Thanks, closed.

Rafael

Re: [Bug #16537] TREE_RCU hangs at boot

[Rafael J. Wysocki]

On Tuesday, September 21, 2010, Paul E. McKenney wrote:
> On Mon, Sep 20, 2010 at 11:26:27AM -0700, Paul E. McKenney wrote:
> > On Sun, Sep 12, 2010 at 09:08:42PM +0200, Rafael J. Wysocki wrote:
> > > This message has been generated automatically as a part of a report
> > > of regressions introduced between 2.6.34 and 2.6.35.
> > > 
> > > The following bug entry is on the current list of known regressions
> > > introduced between 2.6.34 and 2.6.35.  Please verify if it still should
> > > be listed and let the tracking team know (either way).
> > > 
> > > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16537
> > > Subject		: TREE_RCU hangs at boot
> > > Submitter	: Rolf Eike Beer <eike-kernel-F+mm6HnICJmzQB+pC5nmwQ@public.gmane.org>
> > > Date		: 2010-08-07 12:18 (37 days old)
> > > Handled-By	: Paul E. McKenney <paulmck-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
> > 
> > I cannot reproduce this.  The function that is claimed to hang contains
> > only printk()s.  I have asked the guys who can actually reproduce it
> > to try a later kernel, and will let you know how this goes.
> > 
> > If you cannot trust printk(), who can you trust?  ;-)
> 
> It turns out that this problem is due to tab processing in the PA-RISC
> firmware, which certainly explains my inability to reproduce it.  It
> turns out that it is fixed by:
> 
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=d9b68e5e88248bb24fd4e455588bea1d56108fd6
> 
> So we can close this regression.
> 
> Many thanks to Guy Martin <gmsoft-OHzg2hESl54FHpyHPIa6Kw@public.gmane.org> for much help with
> this!!!

Thanks, closed.

Rafael

[Bug 16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16312


Florian Mickler <florian@mickler.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED
         Resolution|PATCH_ALREADY_AVAILABLE     |CODE_FIX




--- Comment #40 from Florian Mickler <florian@mickler.org>  2011-01-23 16:09:24 ---
fixed in .37-rc1 by: 
commit 01ea50638bc04ca5259f5711fcdedefcdde1cf43
Author: Signed-off-by: Jan Kara <jack@suse.cz>
Date:   Thu Sep 16 20:36:36 2010 +0200

    block: Fix race during disk initialization

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[Bug #16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16312
Subject		: WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty
Submitter	: Zdenek Kabelac <zdenek.kabelac@gmail.com>
Date		: 2010-06-28 9:40 (112 days old)
Message-ID	: <AANLkTin24fr5O4_q5Xbo9Y_NKkEmtcp6Hgmr9_4qXaFz@mail.gmail.com>
References	: http://marc.info/?l=linux-kernel&m=127771804806465&w=2
		  http://lkml.indiana.edu/hypermail/linux/kernel/1007.3/00884.html
Handled-By	: Jan Kara <jack@suse.cz>
		  Jan Kara <jack@suse.cz>
Patch		: https://bugzilla.kernel.org/attachment.cgi?id=30282

[Bug #16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16312
Subject		: WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty
Submitter	: Zdenek Kabelac <zdenek.kabelac@gmail.com>
Date		: 2010-06-28 9:40 (105 days old)
Message-ID	: <AANLkTin24fr5O4_q5Xbo9Y_NKkEmtcp6Hgmr9_4qXaFz@mail.gmail.com>
References	: http://marc.info/?l=linux-kernel&m=127771804806465&w=2
		  http://lkml.indiana.edu/hypermail/linux/kernel/1007.3/00884.html
Handled-By	: Jan Kara <jack@suse.cz>
		  Jan Kara <jack@suse.cz>
Patch		: https://bugzilla.kernel.org/attachment.cgi?id=30282

[Bug 16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16312





--- Comment #39 from Bart Van Assche <bart.vanassche@gmail.com>  2010-10-04 21:10:08 ---
(In reply to comment #37)
> It should be the one mentioned in comment #33 . 
> 
> But we have no confirmation about it yet. Can you test it?

That patch works great on my setup.

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[Bug #16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16312
Subject		: WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty
Submitter	: Zdenek Kabelac <zdenek.kabelac@gmail.com>
Date		: 2010-06-28 9:40 (98 days old)
Message-ID	: <AANLkTin24fr5O4_q5Xbo9Y_NKkEmtcp6Hgmr9_4qXaFz@mail.gmail.com>
References	: http://marc.info/?l=linux-kernel&m=127771804806465&w=2
		  http://lkml.indiana.edu/hypermail/linux/kernel/1007.3/00884.html
Handled-By	: Jan Kara <jack@suse.cz>
		  Jan Kara <jack@suse.cz>
Patch		: https://bugzilla.kernel.org/attachment.cgi?id=30282

[Bug #16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16312
Subject		: WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty
Submitter	: Zdenek Kabelac <zdenek.kabelac-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2010-06-28 9:40 (98 days old)
Message-ID	: <AANLkTin24fr5O4_q5Xbo9Y_NKkEmtcp6Hgmr9_4qXaFz-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
References	: http://marc.info/?l=linux-kernel&m=127771804806465&w=2
		  http://lkml.indiana.edu/hypermail/linux/kernel/1007.3/00884.html
Handled-By	: Jan Kara <jack-AlSwsSmVLrQ@public.gmane.org>
		  Jan Kara <jack-AlSwsSmVLrQ@public.gmane.org>
Patch		: https://bugzilla.kernel.org/attachment.cgi?id=30282

[Bug 16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16312





--- Comment #38 from Rafael J. Wysocki <rjw@sisk.pl>  2010-10-03 20:13:52 ---
The patch works (I can reproduce the problem without it), but it's not going to
be included in 2.6.36 AFAICT.  It's going to be merged into 2.6.37 and than put
into -stable.

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[Bug 16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16312





--- Comment #37 from Florian Mickler <florian@mickler.org>  2010-10-03 10:25:47 ---
It should be the one mentioned in comment #33 . 

But we have no confirmation about it yet. Can you test it?

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[Bug 16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16312


Bart Van Assche <bart.vanassche@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bart.vanassche@gmail.com




--- Comment #36 from Bart Van Assche <bart.vanassche@gmail.com>  2010-10-03 10:05:02 ---
What is the current status of this issue, and which of the attached patches
fixes this issue ? This still occurs with 2.6.35.7 when loading the kernel
module ib_srp:

------------[ cut here ]------------
WARNING: at fs/fs-writeback.c:951 __mark_inode_dirty+0x104/0x180()
Hardware name: P5Q DELUXE
Modules linked in: ib_srp scsi_transport_srp scsi_tgt netconsole configfs
snd_pcm_oss snd_mixer_oss snd_seq snd_seq_device af_packet rdma_ucm rdma_cm
iw_cm ib_addr ib_ipoib ib_cm ib_sa ipv6 ib_uverbs ib_umad cpufreq_conservative
cpufreq_userspace cpufreq_powersave acpi_cpufreq mperf mlx4_ib ib_mad ib_core
fuse loop dm_mod snd_hda_codec_atihdmi snd_hda_codec_analog snd_hda_intel
snd_hda_codec snd_hwdep snd_pcm snd_timer snd mlx4_core sr_mod button i2c_i801
intel_agp soundcore snd_page_alloc serio_raw pcspkr i2c_core cdrom sg usbhid
hid uhci_hcd rtc_cmos rtc_core ehci_hcd rtc_lib sd_mod crc_t10dif usbcore edd
ext3 mbcache jbd fan ide_pci_generic ide_core ata_generic ata_piix pata_marvell
ahci libahci libata scsi_mod thermal processor thermal_sys hwmon [last
unloaded: ib_srp]
Pid: 3900, comm: blkid Not tainted 2.6.35.7 #1
Call Trace:
 [<ffffffff8104a81f>] warn_slowpath_common+0x7f/0xc0
 [<ffffffff8104a87a>] warn_slowpath_null+0x1a/0x20
 [<ffffffff8112f384>] __mark_inode_dirty+0x104/0x180
 [<ffffffff811232f5>] touch_atime+0x135/0x180
 [<ffffffff810c7f07>] generic_file_aio_read+0x2c7/0x6c0
 [<ffffffff8110ccfa>] do_sync_read+0xda/0x120
 [<ffffffff8103049a>] ? do_page_fault+0x18a/0x3d0
 [<ffffffff8111cb6d>] ? vfs_ioctl+0x3d/0xd0
 [<ffffffff8111cd28>] ? do_vfs_ioctl+0x88/0x540
 [<ffffffff8110d925>] vfs_read+0xb5/0x180
 [<ffffffff8110dae1>] sys_read+0x51/0x80
 [<ffffffff81002fdb>] system_call_fastpath+0x16/0x1b
---[ end trace d756b562ec21031e ]---
bdi-block not registered

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[Bug #16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16312
Subject		: WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty
Submitter	: Zdenek Kabelac <zdenek.kabelac@gmail.com>
Date		: 2010-06-28 9:40 (91 days old)
Message-ID	: <AANLkTin24fr5O4_q5Xbo9Y_NKkEmtcp6Hgmr9_4qXaFz@mail.gmail.com>
References	: http://marc.info/?l=linux-kernel&m=127771804806465&w=2
		  http://lkml.indiana.edu/hypermail/linux/kernel/1007.3/00884.html
Handled-By	: Jan Kara <jack@suse.cz>
		  Jan Kara <jack@suse.cz>
Patch		: https://bugzilla.kernel.org/attachment.cgi?id=30282

Re: [Bug #16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[Rafael J. Wysocki]

On Monday, September 20, 2010, Jan Kara wrote:
> On Mon 20-09-10 21:57:17, Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of regressions introduced between 2.6.34 and 2.6.35.
> > 
> > The following bug entry is on the current list of known regressions
> > introduced between 2.6.34 and 2.6.35.  Please verify if it still should
> > be listed and let the tracking team know (either way).
>   The patch is in block tree, going to 2.6.37 and then -stable trees.

OK, thanks for the update.

The bug is going to be listed, though, until 2.6.36 is released.

Rafael

Re: [Bug #16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[Rafael J. Wysocki]

On Monday, September 20, 2010, Jan Kara wrote:
> On Mon 20-09-10 21:57:17, Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of regressions introduced between 2.6.34 and 2.6.35.
> > 
> > The following bug entry is on the current list of known regressions
> > introduced between 2.6.34 and 2.6.35.  Please verify if it still should
> > be listed and let the tracking team know (either way).
>   The patch is in block tree, going to 2.6.37 and then -stable trees.

OK, thanks for the update.

The bug is going to be listed, though, until 2.6.36 is released.

Rafael

Re: [Bug #16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[Jan Kara]

On Mon 20-09-10 21:57:17, Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of regressions introduced between 2.6.34 and 2.6.35.
> 
> The following bug entry is on the current list of known regressions
> introduced between 2.6.34 and 2.6.35.  Please verify if it still should
> be listed and let the tracking team know (either way).
  The patch is in block tree, going to 2.6.37 and then -stable trees.

> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16312
> Subject		: WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty
> Submitter	: Zdenek Kabelac <zdenek.kabelac@gmail.com>
> Date		: 2010-06-28 9:40 (85 days old)
> Message-ID	: <AANLkTin24fr5O4_q5Xbo9Y_NKkEmtcp6Hgmr9_4qXaFz@mail.gmail.com>
> References	: http://marc.info/?l=linux-kernel&m=127771804806465&w=2
> 		  http://lkml.indiana.edu/hypermail/linux/kernel/1007.3/00884.html
> Handled-By	: Jan Kara <jack@suse.cz>
> 		  Jan Kara <jack@suse.cz>
> Patch		: https://bugzilla.kernel.org/attachment.cgi?id=30282

								Honza
-- 
Jan Kara <jack@suse.cz>
SUSE Labs, CR

[Bug #16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16312
Subject		: WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty
Submitter	: Zdenek Kabelac <zdenek.kabelac@gmail.com>
Date		: 2010-06-28 9:40 (85 days old)
Message-ID	: <AANLkTin24fr5O4_q5Xbo9Y_NKkEmtcp6Hgmr9_4qXaFz@mail.gmail.com>
References	: http://marc.info/?l=linux-kernel&m=127771804806465&w=2
		  http://lkml.indiana.edu/hypermail/linux/kernel/1007.3/00884.html
Handled-By	: Jan Kara <jack@suse.cz>
		  Jan Kara <jack@suse.cz>
Patch		: https://bugzilla.kernel.org/attachment.cgi?id=30282

[Bug #16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16312
Subject		: WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty
Submitter	: Zdenek Kabelac <zdenek.kabelac-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2010-06-28 9:40 (85 days old)
Message-ID	: <AANLkTin24fr5O4_q5Xbo9Y_NKkEmtcp6Hgmr9_4qXaFz-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
References	: http://marc.info/?l=linux-kernel&m=127771804806465&w=2
		  http://lkml.indiana.edu/hypermail/linux/kernel/1007.3/00884.html
Handled-By	: Jan Kara <jack-AlSwsSmVLrQ@public.gmane.org>
		  Jan Kara <jack-AlSwsSmVLrQ@public.gmane.org>
Patch		: https://bugzilla.kernel.org/attachment.cgi?id=30282

[Bug 16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16312





--- Comment #35 from Jan Kara <jack@suse.cz>  2010-09-20 10:20:33 ---
*** Bug 17461 has been marked as a duplicate of this bug. ***

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--- Comment #34 from Larry Finger <Larry.Finger@lwfinger.net>  2010-09-17 00:18:00 ---
I will test that patch when I get back to my machine, but that will be several
weeks.

Larry

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Rafael J. Wysocki <rjw@sisk.pl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |PATCH_ALREADY_AVAILABLE




--- Comment #33 from Rafael J. Wysocki <rjw@sisk.pl>  2010-09-16 18:39:55 ---
Handled-By : Jan Kara <jack@suse.cz>
Patch : https://bugzilla.kernel.org/attachment.cgi?id=30282

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--- Comment #32 from Jan Kara <jack@suse.cz>  2010-09-16 18:16:19 ---
This patch should fix the problem. The kernel boots with it so it shouldn't be
really wrong. I'll send it to Jens for review and inclusion...

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--- Comment #31 from Jan Kara <jack@suse.cz>  2010-09-16 18:15:04 ---
Created an attachment (id=30282)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=30282)
Fix race in add_disk() causing warning in __mark_inode_dirty().

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--- Comment #30 from Jan Kara <jack@suse.cz>  2010-09-16 18:13:21 ---
OK, Tejun, I finally read the code. So you are right that the patch doesn't
solve the race. The race seems to be in block/genhd.c:add_disk(). Once we call
register_disk(), device can be successfully opened (get_gendisk() from
blkdev_open() will succeed as soon as disk's kobject exists). But until we call
bdi_register_dev(), backing dev isn't properly initialized and thus can see the
warning. This also explains why Larry is able to see the warning even with your
patch.

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--- Comment #29 from Rafael J. Wysocki <rjw@sisk.pl>  2010-09-13 17:56:20 ---
Ignore-Patch : https://bugzilla.kernel.org/attachment.cgi?id=27272

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--- Comment #28 from Tejun Heo <tj@kernel.org>  2010-09-08 08:23:54 ---
Ah, okay, now I remember this one.  Jan, what do you think about comment#25? 
The patch would prevent udev from triggering the problem automatically but it's
still broken.

Thanks.

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Florian Mickler <florian@mickler.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |florian@mickler.org




--- Comment #27 from Florian Mickler <florian@mickler.org>  2010-09-08 07:44:20 ---
The patches here seem not to be mainline yet. 
I can see some discussion about the patch set of Jan Kara on lkml[1].
But I can't see Tejun's patch either in linus tree nor on lkml. 

Are these still necessary? 

[1]
References: http://lkml.indiana.edu/hypermail/linux/kernel/1007.3/00884.html

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[Bug #16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.34 and 2.6.35.

The following bug entry is on the current list of known regressions
introduced between 2.6.34 and 2.6.35.  Please verify if it still should
be listed and let the tracking team know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16312
Subject		: WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty
Submitter	: Zdenek Kabelac <zdenek.kabelac@gmail.com>
Date		: 2010-06-28 9:40 (63 days old)
Message-ID	: <AANLkTin24fr5O4_q5Xbo9Y_NKkEmtcp6Hgmr9_4qXaFz@mail.gmail.com>
References	: http://marc.info/?l=linux-kernel&m=127771804806465&w=2
Handled-By	: Jan Kara <jack@suse.cz>
Patch		: https://bugzilla.kernel.org/attachment.cgi?id=27272

[Bug 16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16312





--- Comment #26 from Larry Finger <Larry.Finger@lwfinger.net>  2010-08-20 22:23:12 ---
I finally got my computer back. Tejun's patch seems to fix the problem.

The warning has been intermittent and I will report back if the warning returns
later.

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Tejun Heo <tj@kernel.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tj@kernel.org




--- Comment #25 from Tejun Heo <tj@kernel.org>  2010-08-06 06:32:03 ---
(In reply to comment #23)
> Well, my naive opinion rather is that userspace shouldn't be able to access a
> device node which isn't fully set up. That could have unexpected pitfalls for
> the process and the kernel as well, couldn't it?

But device nodes can be created for any device number whether the device exists
or not.  The patch makes sd announce it later so at least udev doesn't try to
access it earlier but unless I'm misunderstanding something userspace still can
trigger these warnings easily.

Thansk.

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--- Comment #24 from Larry Finger <Larry.Finger@lwfinger.net>  2010-08-05 18:31:07 ---
I will as soon as I can.

The hard drive in the box with that particular problem failed and it is in the
shop being repaired. That will take longer than it should as it is in warranty
and the work has to be done at a central repair facility. The 20 minute job of
replacing the hard drive in that notebook will take 3-4 weeks.

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--- Comment #23 from Jan Kara <jack@suse.cz>  2010-08-05 18:07:50 ---
Thanks for the patch Tejun! Larry, could you please try it?

Well, my naive opinion rather is that userspace shouldn't be able to access a
device node which isn't fully set up. That could have unexpected pitfalls for
the process and the kernel as well, couldn't it? Technically, it's also hard to
switch BDI under a living device inode - the BDI pointer could be cached in
various places...

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--- Comment #22 from Tejun Heo <tj@kernel.org>  2010-08-05 12:11:59 ---
Created an attachment (id=27356)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=27356)
sd-delay-uevent.patch

This would make sd announce the sd device after block device is set up, which
probably is the right thing to do but it still is wrong to trigger WARN_ON()
when a user program accesses a device node which isn't ready yet.  Can't that
warning be removed by using a default bdi w/ BDI_CAP_NO_ACCT_AND_WRITEBACK set
for block device nodes?

Thanks.

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Jan Kara <jack@suse.cz> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |htejun@gmail.com




--- Comment #21 from Jan Kara <jack@suse.cz>  2010-08-02 13:21:05 ---
Yes, I think these are two different bugs just with a similar manifestation.
See comment 8 in this bug. I'm just not sure how to fix the second bug in sd.c.
I think I'll send a direct email to a few people to catch some attention.

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--- Comment #20 from Larry Finger <Larry.Finger@lwfinger.net>  2010-08-01 19:40:00 ---
The diagnostics patch from #12 did not change anything.

I am beginning to think that Bug 16312 is not the same as Bug 16122. Even with
the patches from 16312, I still get warnings as below:

[   11.728776] ------------[ cut here ]------------
[   11.728787] WARNING: at fs/fs-writeback.c:964
__mark_inode_dirty+0x10f/0x1a0()
[   11.728790] Hardware name: HP Pavilion dv2700 Notebook PC
[   11.728792] Modules linked in: loop(+) dm_mod ide_cd_mod cdrom
snd_hda_codec_conexant ide_pci_generic arc4 ecb b43 rng_core mac80211
snd_hda_intel r8712u(C) cfg80211 snd_hda_codec amd74xx snd_pcm sg ide_core
rfkill led_class snd_timer ssb mmc_core pcmcia snd joydev k8temp hwmon
i2c_nforce2 pcmcia_core forcedeth serio_raw snd_page_alloc i2c_core battery ac
button ext4 mbcache jbd2 crc16 ohci_hcd sd_mod ehci_hcd usbcore fan processor
ahci libahci libata scsi_mod thermal
[   11.728854] Pid: 2449, comm: udisks-part-id Tainted: G         C 
2.6.35-rc6-realtek+ #15
[   11.728857] Call Trace:
[   11.728865]  [<ffffffff8104608a>] warn_slowpath_common+0x7a/0xb0
[   11.728869]  [<ffffffff810460d5>] warn_slowpath_null+0x15/0x20
[   11.728874]  [<ffffffff81129d5f>] __mark_inode_dirty+0x10f/0x1a0
[   11.728879]  [<ffffffff8111e07d>] touch_atime+0x12d/0x170
[   11.728885]  [<ffffffff810cab91>] generic_file_aio_read+0x5c1/0x720
[   11.728890]  [<ffffffff81107ca2>] do_sync_read+0xd2/0x110
[   11.728896]  [<ffffffff81077e7d>] ? trace_hardirqs_on+0xd/0x10
[   11.728900]  [<ffffffff811083c3>] vfs_read+0xb3/0x170
[   11.728906]  [<ffffffff81002d1c>] ? sysret_check+0x27/0x62
[   11.728909]  [<ffffffff811084cc>] sys_read+0x4c/0x80
[   11.728914]  [<ffffffff81002ceb>] system_call_fastpath+0x16/0x1b
[   11.728917] ---[ end trace 32e16cacad33229f ]---
[   11.728919] bdi-block not registered

The warnings do not occur with every boot and appear to be some kind of race
condition.

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[Bug #16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.34.  Please verify if it still should be listed and let the tracking team
know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16312
Subject		: WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty
Submitter	: Zdenek Kabelac <zdenek.kabelac@gmail.com>
Date		: 2010-06-28 9:40 (35 days old)
Message-ID	: <AANLkTin24fr5O4_q5Xbo9Y_NKkEmtcp6Hgmr9_4qXaFz@mail.gmail.com>
References	: http://marc.info/?l=linux-kernel&m=127771804806465&w=2
Handled-By	: Jan Kara <jack@suse.cz>
Patch		: https://bugzilla.kernel.org/attachment.cgi?id=27272

[Bug 16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16312


Rafael J. Wysocki <rjw@sisk.pl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |NEW




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Rafael J. Wysocki <rjw@sisk.pl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|PATCH_ALREADY_AVAILABLE     |




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--- Comment #19 from Larry Finger <Larry.Finger@lwfinger.net>  2010-07-29 19:29:50 ---
This one needs to be reopened. The WARNING that I get does not happen every
reboot, but now I'm getting 2 when it happens. This kernel includes the 3
patches posted above.

[   12.183797] ------------[ cut here ]------------
[   12.183808] WARNING: at fs/fs-writeback.c:964
__mark_inode_dirty+0x10f/0x1a0()
[   12.183811] Hardware name: HP Pavilion dv2700 Notebook PC
[   12.183814] Modules linked in: loop(+) dm_mod ide_cd_mod cdrom
ide_pci_generic arc4 ecb b43 rng_core mac80211 snd_hda_codec_conexant cfg80211
rfkill led_class amd74xx ssb mmc_core ide_core snd_hda_intel snd_hda_codec
snd_pcm snd_timer k8temp pcmcia pcmcia_core forcedeth snd i2c_nforce2 joydev
hwmon sg snd_page_alloc serio_raw i2c_core ac battery button ext4 mbcache jbd2
crc16 ohci_hcd ehci_hcd sd_mod usbcore fan processor ahci libahci libata
scsi_mod thermal
[   12.183872] Pid: 2444, comm: udisks-part-id Not tainted 2.6.35-rc6-realtek+
#11
[   12.183875] Call Trace:
[   12.183882]  [<ffffffff8104608a>] warn_slowpath_common+0x7a/0xb0
[   12.183887]  [<ffffffff810460d5>] warn_slowpath_null+0x15/0x20
[   12.183891]  [<ffffffff81129d5f>] __mark_inode_dirty+0x10f/0x1a0
[   12.183895]  [<ffffffff8111e07d>] touch_atime+0x12d/0x170
[   12.183901]  [<ffffffff810cab91>] generic_file_aio_read+0x5c1/0x720
[   12.183906]  [<ffffffff81107ca2>] do_sync_read+0xd2/0x110
[   12.183912]  [<ffffffff81077e7d>] ? trace_hardirqs_on+0xd/0x10
[   12.183916]  [<ffffffff811083c3>] vfs_read+0xb3/0x170
[   12.183921]  [<ffffffff81002d1c>] ? sysret_check+0x27/0x62
[   12.183925]  [<ffffffff811084cc>] sys_read+0x4c/0x80
[   12.183929]  [<ffffffff81002ceb>] system_call_fastpath+0x16/0x1b
[   12.183932] ---[ end trace fdce3ec00c26fa3d ]---
[   12.183935] bdi-block not registered
[   12.205056] ------------[ cut here ]------------
[   12.205067] WARNING: at fs/fs-writeback.c:964
__mark_inode_dirty+0x10f/0x1a0()
[   12.205070] Hardware name: HP Pavilion dv2700 Notebook PC
[   12.205072] Modules linked in: loop(+) dm_mod ide_cd_mod cdrom
ide_pci_generic arc4 ecb b43 rng_core mac80211 snd_hda_codec_conexant cfg80211
rfkill led_class amd74xx ssb mmc_core ide_core snd_hda_intel snd_hda_codec
snd_pcm snd_timer k8temp pcmcia pcmcia_core forcedeth snd i2c_nforce2 joydev
hwmon sg snd_page_alloc serio_raw i2c_core ac battery button ext4 mbcache jbd2
crc16 ohci_hcd ehci_hcd sd_mod usbcore fan processor ahci libahci libata
scsi_mod thermal
[   12.205131] Pid: 2456, comm: udisks-part-id Tainted: G        W  
2.6.35-rc6-realtek+ #11
[   12.205134] Call Trace:
[   12.205141]  [<ffffffff8104608a>] warn_slowpath_common+0x7a/0xb0
[   12.205146]  [<ffffffff810460d5>] warn_slowpath_null+0x15/0x20
[   12.205150]  [<ffffffff81129d5f>] __mark_inode_dirty+0x10f/0x1a0
[   12.205155]  [<ffffffff8111e07d>] touch_atime+0x12d/0x170
[   12.205160]  [<ffffffff810cab91>] generic_file_aio_read+0x5c1/0x720
[   12.205165]  [<ffffffff81107ca2>] do_sync_read+0xd2/0x110
[   12.205171]  [<ffffffff81077e7d>] ? trace_hardirqs_on+0xd/0x10
[   12.205175]  [<ffffffff811083c3>] vfs_read+0xb3/0x170
[   12.205180]  [<ffffffff81002d1c>] ? sysret_check+0x27/0x62
[   12.205183]  [<ffffffff811084cc>] sys_read+0x4c/0x80
[   12.205188]  [<ffffffff81002ceb>] system_call_fastpath+0x16/0x1b
[   12.205191] ---[ end trace fdce3ec00c26fa3e ]---
[   12.205193] bdi-block not registered

I will put the diagnostic patch from comment 12 to get more info.

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Rafael J. Wysocki <rjw@sisk.pl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |PATCH_ALREADY_AVAILABLE




--- Comment #18 from Rafael J. Wysocki <rjw@sisk.pl>  2010-07-27 18:05:55 ---
Handled-By : Jan Kara <jack@suse.cz>
Patch : https://bugzilla.kernel.org/attachment.cgi?id=27272

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--- Comment #17 from Larry Finger <Larry.Finger@lwfinger.net>  2010-07-27 15:36:23 ---
I forgot one part. If you want, add a "Tested-by: Larry Finger
<Larry.Finger@lwfinger.net> to the patches.

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--- Comment #16 from Larry Finger <Larry.Finger@lwfinger.net>  2010-07-27 15:23:51 ---
With the patches from comments 5, 6 and 15, my system boots cleanly. Good job.
As there probably will not be another rc for 2.6.35, this fix is just in time.

Thanks.

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--- Comment #15 from Jan Kara <jack@suse.cz>  2010-07-27 15:04:10 ---
Created an attachment (id=27272)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=27272)
Initialize noop bdi properly

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--- Comment #14 from Jan Kara <jack@suse.cz>  2010-07-27 15:03:26 ---
Thanks for the prompt test. Indeed noop_backing_dev_info isn't properly
initialized. Attached patch should fix this so this patch plus patches from
comments 5 and 6 should at least boot (at least they do for me ;).

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--- Comment #13 from Larry Finger <Larry.Finger@lwfinger.net>  2010-07-27 14:20:44 ---
The log will have to be hand written. The system would not boot, neither a
netconsole or serial console is possible, and the pictures I took of the screen
are really blurry.

The beginning of the dump is:

Inode devices at sysfs has uninit bdi
Mapping bdi sysfs, caps 131
inode_to_bdi returns bdi noop, caps 0
bdi=noop not registered
BUG: unable to handle NULL pointer at offset 0x8
__mark_inode_dirty+0x159/0x240

The above NULL pointer is in the expansion of

      list_move(&inode->i_list, &wb->b_dirty);

at the statement next->prev = new

Beyond this point, it generates lots of other errors and eventually hangs.

Good luck.

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--- Comment #12 from Jan Kara <jack@suse.cz>  2010-07-27 11:55:41 ---
Created an attachment (id=27267)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=27267)
Debugging patch to print more BDI information

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--- Comment #11 from Jan Kara <jack@suse.cz>  2010-07-27 11:54:54 ---
Doh, thanks for testing. It looks as if we somehow get to bdi which isn't
properly initialized (wb->bdi should always point back to bdi containing the wb
structure). Can you try once more with the debugging patch below applied on top
of my two patches and report what it writes to the log? Thanks.

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--- Comment #10 from Larry Finger <Larry.Finger@lwfinger.net>  2010-07-26 19:56:06 ---
The rest of the traceback is:

touch_atime+0x12d
vfs_readdir+0xbe
sys_detdents64+0x80
system_call_fastpath+0x16

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--- Comment #9 from Larry Finger <Larry.Finger@lwfinger.net>  2010-07-26 17:53:04 ---
These patches break my system (the one reported in Bug #16122). It obviously is
different.

After installing the patches. I get a NULL pointer dereference for address 0x30
as __mark_inode_dirty + 0xf0/0x1a0 (x86_64 system). The code offset 0xf30. I
have a 2.6.35-rc6 kernel.

The assembler code around that address is

/home/finger/linux-temp/fs/fs-writeback.c:960
     f28:       4d 8b ac 24 b0 01 00    mov    0x1b0(%r12),%r13
     f2f:       00 
/home/finger/linux-temp/fs/fs-writeback.c:962
     f30:       41 f6 45 30 02          testb  $0x2,0x30(%r13)
     f35:       75 31                   jne    f68 <__mark_inode_dirty+0x128>
     f37:       41 f6 45 28 10          testb  $0x10,0x28(%r13)
     f3c:       75 2a                   jne    f68 <__mark_inode_dirty+0x128>

The code at line 960 is:

        struct backing_dev_info *bdi = wb->bdi;

        if (bdi_cap_writeback_dirty(bdi) &&
            !test_bit(BDI_registered, &bdi->state)) {
                WARN_ON(1);
                printk(KERN_ERR "bdi-%s not registered\n",
                       bdi->name);
        }

and wb->bdi is NULL.

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--- Comment #8 from Jan Kara <jack@suse.cz>  2010-07-26 13:59:55 ---
Hmm, looking at the original report referenced, my patches need not fix this
particular warning. This particular warning rather looks like a race when
udisks-part-id manages to read the device (and touch it's atime) before
sd_probe_async runs and registers the bdi (via add_disk()). That seems to be
possible as device_add() is run before we even schedule to run sd_async_probe()
in a separate thread.

Jens, any idea how this should be fixed? I believe we should avoid this race
because we should better have the device's queue fully set up before allowing
IO to it... But I'm far from fully understanding this area...

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--- Comment #7 from Jan Kara <jack@suse.cz>  2010-07-26 13:05:09 ---
Guys, it would be nice if you could test 2.6.35-rc5 (or basically
2.6.35-whatever) with the above to patches and check that they fix the issue
for you. Thanks.

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--- Comment #6 from Jan Kara <jack@suse.cz>  2010-07-26 13:02:19 ---
Created an attachment (id=27256)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=27256)
Second patch to fix the issue

The above two patches fix the issue for me.

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--- Comment #5 from Jan Kara <jack@suse.cz>  2010-07-26 13:01:36 ---
Created an attachment (id=27255)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=27255)
First patch to fix the issue

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--- Comment #4 from Rafael J. Wysocki <rjw@sisk.pl>  2010-07-23 20:11:24 ---
On Friday, July 23, 2010, Larry Finger wrote:
> On 07/23/2010 06:42 AM, Rafael J. Wysocki wrote:
> > This message contains a list of some regressions from 2.6.34,
> > for which there are no fixes in the mainline known to the tracking team.
> > If any of them have been fixed already, please let us know.
> 
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16312
> > Subject		: WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty
> > Submitter	: Zdenek Kabelac<zdenek.kabelac@gmail.com>
> > Date		: 2010-06-28 9:40 (26 days old)
> 
> I still have this in 2.6.35-rc5.

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Jan Kara <jack@suse.cz> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |axboe@kernel.dk,
                   |                            |jack@suse.cz




--- Comment #3 from Jan Kara <jack@suse.cz>  2010-07-23 15:30:50 ---
I was looking into this. A trivial reproducer is:
mknod devzero c 1 5; touch devzero

Essentially, the problem is that any device inode can get dirty because of time
stamp update or similar reason but some BDIs (in this case the one backing
/dev/zero) do not expect dirty inodes. Hmm, I now have to think how to fix
this... It would be more natural if device inodes were queued for metadata
updates in the queues of "parent" filesystem. But this brings problem that
device inode would need to be in two queues - one for metadata update to the
parent filesystem and one for data writeout to the device (this is not exactly
the case of /dev/zero but if you have a device node for /dev/sdb on /dev/sda,
then this is exactly what we would need).

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[Bug #16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.34.  Please verify if it still should be listed and let the tracking team
know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16312
Subject		: WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty
Submitter	: Zdenek Kabelac <zdenek.kabelac@gmail.com>
Date		: 2010-06-28 9:40 (26 days old)
Message-ID	: <AANLkTin24fr5O4_q5Xbo9Y_NKkEmtcp6Hgmr9_4qXaFz@mail.gmail.com>
References	: http://marc.info/?l=linux-kernel&m=127771804806465&w=2

[Bug 16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16312





--- Comment #2 from Rafael J. Wysocki <rjw@sisk.pl>  2010-07-09 21:32:53 ---
*** Bug 16122 has been marked as a duplicate of this bug. ***

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Larry Finger <Larry.Finger@lwfinger.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |Larry.Finger@lwfinger.net




--- Comment #1 from Larry Finger <Larry.Finger@lwfinger.net>  2010-07-09 02:23:40 ---
This is a duplicate of Bug #16122.

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[Bug #16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.34.  Please verify if it still should be listed and let the tracking team
know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16312
Subject		: WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty
Submitter	: Zdenek Kabelac <zdenek.kabelac@gmail.com>
Date		: 2010-06-28 9:40 (11 days old)
Message-ID	: <AANLkTin24fr5O4_q5Xbo9Y_NKkEmtcp6Hgmr9_4qXaFz@mail.gmail.com>
References	: http://marc.info/?l=linux-kernel&m=127771804806465&w=2

[Bug #16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.34.  Please verify if it still should be listed and let the tracking team
know (either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=16312
Subject		: WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty
Submitter	: Zdenek Kabelac <zdenek.kabelac-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2010-06-28 9:40 (11 days old)
Message-ID	: <AANLkTin24fr5O4_q5Xbo9Y_NKkEmtcp6Hgmr9_4qXaFz-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
References	: http://marc.info/?l=linux-kernel&m=127771804806465&w=2

[Bug 16312] WARNING: at fs/fs-writeback.c:1127 __mark_inode_dirty

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Maciej Rutecki <maciej.rutecki@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |16055




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