2.6.38-rc3-git1: Reported regressions from 2.6.37

2.6.38-rc3-git1: Reported regressions from 2.6.37

[Rafael J. Wysocki]

This message contains a list of some regressions from 2.6.37,
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 regressions from 2.6.37, 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
  ----------------------------------------
  2011-02-03       19       11           7


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

Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=28102
Subject		: New display errors in 2.6.38-rc2-00175-g6fb1b30
Submitter	: Nico Schottelius <nico-kernel-20110117@schottelius.org>
Date		: 2011-01-28 20:29 (6 days old)
Message-ID	: <20110128202905.GB3395@schottelius.org>
References	: http://marc.info/?l=linux-kernel&m=129624657425949&w=2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=28052
Subject		: [BUG] 2.6.38-rc2: Circular Locking Dependency
Submitter	: Knut Petersen <Knut_Petersen@t-online.de>
Date		: 2011-01-24 9:25 (10 days old)
Message-ID	: <4D3D45A3.7040809@t-online.de>
References	: http://marc.info/?l=linux-kernel&m=129586118515443&w=2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=27812
Subject		: 2.6.38-rc2: acpi backlight control missing
Submitter	: Thomas Meyer <thomas@m3y3r.de>
Date		: 2011-01-22 10:49 (12 days old)
First-Bad-Commit: http://git.kernel.org/linus/677bd810eedce61edf15452491781ff046b92edc
Message-ID	: <1295693349.2120.3.camel@localhost.localdomain>
References	: http://marc.info/?l=linux-kernel&m=129569353414755&w=2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=27652
Subject		: 38-rc1: umount+rmmod cause ext4 error.
Submitter	: Tao Ma <tm@tao.ma>
Date		: 2011-01-19 6:53 (15 days old)
Message-ID	: <4D368A70.5030103@tao.ma>
References	: http://marc.info/?l=linux-ext4&m=129542001031750&w=2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=27382
Subject		: ath5k phy0: gain calibration timeout
Submitter	: Nicolas Stransky <Nico@stransky.cx>
Date		: 2011-01-23 00:18 (11 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=27282
Subject		: Regression: 2.6.38 vs. Powertop 2
Submitter	: Dennis Jansen <dennis.jansen@web.de>
Date		: 2011-01-21 14:34 (13 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=27022
Subject		: [REPORT] BUG: spinlock recursion on CPU#0, init/1
Submitter	: Santosh Shilimkar <santosh.shilimkar@ti.com>
Date		: 2011-01-10 15:33 (24 days old)
Message-ID	: <a7a9bdaa5936630925fb7ffd1a1795b1@mail.gmail.com>
References	: http://marc.info/?l=linux-kernel&m=129467294808655&w=2


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

Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=28012
Subject		: [drm:i915_driver_load] *ERROR* failed to init modeset, EINVAL
Submitter	: Ferenc Wágner <wferi@niif.hu>
Date		: 2011-02-01 15:18 (2 days old)
Handled-By	: Chris Wilson <chris@chris-wilson.co.uk>
Patch		: https://bugzilla.kernel.org/attachment.cgi?id=45892


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=27862
Subject		: Cannot launch X.org server on Core I5 with 2.6.38-rc2-git7
Submitter	: Darisuz Luksza <dariusz.luksza@gmail.com>
Date		: 2011-01-30 12:13 (4 days old)
Handled-By	: Chris Wilson <chris@chris-wilson.co.uk>
Patch		: https://bugs.freedesktop.org/attachment.cgi?id=42634


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=27702
Subject		: regression 2.6.37 -> 2.6.38-rc1: after suspend backlight cannot be adjusted
Submitter	: Norbert Preining <preining@logic.at>
Date		: 2011-01-21 1:55 (13 days old)
Message-ID	: <20110121015529.GD9796@gamma.logic.tuwien.ac.at>
References	: http://marc.info/?l=linux-kernel&m=129557717826819&w=2
Handled-By	: Michael Karcher <kernel@mkarcher.dialup.fu-berlin.de>
Patch		: https://patchwork.kernel.org/patch/499221/


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=27472
Subject		: 5bd5a45 breaks resume from suspend on Thinkpad X201
Submitter	: Björn Schließmann <chronoss@gmx.de>
Date		: 2011-01-23 23:24 (11 days old)
Handled-By	: CASTET Matthieu <castet.matthieu@free.fr>
Patch		: https://bugzilla.kernel.org/attachment.cgi?id=45192


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

As you can see, there is a Bugzilla entry for each of the listed regressions.
There also is a Bugzilla entry used for tracking the regressions from 2.6.37,
unresolved as well as resolved, at:

http://bugzilla.kernel.org/show_bug.cgi?id=27352

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

Thanks!

2.6.38-rc3-git1: Reported regressions from 2.6.37

[Rafael J. Wysocki]

This message contains a list of some regressions from 2.6.37,
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 regressions from 2.6.37, 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
  ----------------------------------------
  2011-02-03       19       11           7


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

Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=28102
Subject		: New display errors in 2.6.38-rc2-00175-g6fb1b30
Submitter	: Nico Schottelius <nico-kernel-20110117@schottelius.org>
Date		: 2011-01-28 20:29 (6 days old)
Message-ID	: <20110128202905.GB3395@schottelius.org>
References	: http://marc.info/?l=linux-kernel&m=129624657425949&w=2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=28052
Subject		: [BUG] 2.6.38-rc2: Circular Locking Dependency
Submitter	: Knut Petersen <Knut_Petersen@t-online.de>
Date		: 2011-01-24 9:25 (10 days old)
Message-ID	: <4D3D45A3.7040809@t-online.de>
References	: http://marc.info/?l=linux-kernel&m=129586118515443&w=2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=27812
Subject		: 2.6.38-rc2: acpi backlight control missing
Submitter	: Thomas Meyer <thomas@m3y3r.de>
Date		: 2011-01-22 10:49 (12 days old)
First-Bad-Commit: http://git.kernel.org/linus/677bd810eedce61edf15452491781ff046b92edc
Message-ID	: <1295693349.2120.3.camel@localhost.localdomain>
References	: http://marc.info/?l=linux-kernel&m=129569353414755&w=2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=27652
Subject		: 38-rc1: umount+rmmod cause ext4 error.
Submitter	: Tao Ma <tm@tao.ma>
Date		: 2011-01-19 6:53 (15 days old)
Message-ID	: <4D368A70.5030103@tao.ma>
References	: http://marc.info/?l=linux-ext4&m=129542001031750&w=2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=27382
Subject		: ath5k phy0: gain calibration timeout
Submitter	: Nicolas Stransky <Nico@stransky.cx>
Date		: 2011-01-23 00:18 (11 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=27282
Subject		: Regression: 2.6.38 vs. Powertop 2
Submitter	: Dennis Jansen <dennis.jansen@web.de>
Date		: 2011-01-21 14:34 (13 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=27022
Subject		: [REPORT] BUG: spinlock recursion on CPU#0, init/1
Submitter	: Santosh Shilimkar <santosh.shilimkar@ti.com>
Date		: 2011-01-10 15:33 (24 days old)
Message-ID	: <a7a9bdaa5936630925fb7ffd1a1795b1@mail.gmail.com>
References	: http://marc.info/?l=linux-kernel&m=129467294808655&w=2


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

Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=28012
Subject		: [drm:i915_driver_load] *ERROR* failed to init modeset, EINVAL
Submitter	: Ferenc Wágner <wferi@niif.hu>
Date		: 2011-02-01 15:18 (2 days old)
Handled-By	: Chris Wilson <chris@chris-wilson.co.uk>
Patch		: https://bugzilla.kernel.org/attachment.cgi?id=45892


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=27862
Subject		: Cannot launch X.org server on Core I5 with 2.6.38-rc2-git7
Submitter	: Darisuz Luksza <dariusz.luksza@gmail.com>
Date		: 2011-01-30 12:13 (4 days old)
Handled-By	: Chris Wilson <chris@chris-wilson.co.uk>
Patch		: https://bugs.freedesktop.org/attachment.cgi?id=42634


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=27702
Subject		: regression 2.6.37 -> 2.6.38-rc1: after suspend backlight cannot be adjusted
Submitter	: Norbert Preining <preining@logic.at>
Date		: 2011-01-21 1:55 (13 days old)
Message-ID	: <20110121015529.GD9796@gamma.logic.tuwien.ac.at>
References	: http://marc.info/?l=linux-kernel&m=129557717826819&w=2
Handled-By	: Michael Karcher <kernel@mkarcher.dialup.fu-berlin.de>
Patch		: https://patchwork.kernel.org/patch/499221/


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=27472
Subject		: 5bd5a45 breaks resume from suspend on Thinkpad X201
Submitter	: Björn Schließmann <chronoss@gmx.de>
Date		: 2011-01-23 23:24 (11 days old)
Handled-By	: CASTET Matthieu <castet.matthieu@free.fr>
Patch		: https://bugzilla.kernel.org/attachment.cgi?id=45192


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

As you can see, there is a Bugzilla entry for each of the listed regressions.
There also is a Bugzilla entry used for tracking the regressions from 2.6.37,
unresolved as well as resolved, at:

http://bugzilla.kernel.org/show_bug.cgi?id=27352

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

Thanks!

--
To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
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[Bug #27022] [REPORT] BUG: spinlock recursion on CPU#0, init/1

[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 2.6.37.  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=27022
Subject		: [REPORT] BUG: spinlock recursion on CPU#0, init/1
Submitter	: Santosh Shilimkar <santosh.shilimkar@ti.com>
Date		: 2011-01-10 15:33 (24 days old)
Message-ID	: <a7a9bdaa5936630925fb7ffd1a1795b1@mail.gmail.com>
References	: http://marc.info/?l=linux-kernel&m=129467294808655&w=2

[Bug #27652] 38-rc1: umount+rmmod cause ext4 error.

[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 2.6.37.  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=27652
Subject		: 38-rc1: umount+rmmod cause ext4 error.
Submitter	: Tao Ma <tm@tao.ma>
Date		: 2011-01-19 6:53 (15 days old)
Message-ID	: <4D368A70.5030103@tao.ma>
References	: http://marc.info/?l=linux-ext4&m=129542001031750&w=2

[Bug #27382] ath5k phy0: gain calibration timeout

[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 2.6.37.  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=27382
Subject		: ath5k phy0: gain calibration timeout
Submitter	: Nicolas Stransky <Nico@stransky.cx>
Date		: 2011-01-23 00:18 (11 days old)

[Bug #27812] 2.6.38-rc2: acpi backlight control missing

[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 2.6.37.  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=27812
Subject		: 2.6.38-rc2: acpi backlight control missing
Submitter	: Thomas Meyer <thomas@m3y3r.de>
Date		: 2011-01-22 10:49 (12 days old)
First-Bad-Commit: http://git.kernel.org/linus/677bd810eedce61edf15452491781ff046b92edc
Message-ID	: <1295693349.2120.3.camel@localhost.localdomain>
References	: http://marc.info/?l=linux-kernel&m=129569353414755&w=2

[Bug #27282] Regression: 2.6.38 vs. Powertop 2

[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 2.6.37.  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=27282
Subject		: Regression: 2.6.38 vs. Powertop 2
Submitter	: Dennis Jansen <dennis.jansen@web.de>
Date		: 2011-01-21 14:34 (13 days old)

[Bug #27702] regression 2.6.37 -> 2.6.38-rc1: after suspend backlight cannot be adjusted

[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 2.6.37.  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=27702
Subject		: regression 2.6.37 -> 2.6.38-rc1: after suspend backlight cannot be adjusted
Submitter	: Norbert Preining <preining@logic.at>
Date		: 2011-01-21 1:55 (13 days old)
Message-ID	: <20110121015529.GD9796@gamma.logic.tuwien.ac.at>
References	: http://marc.info/?l=linux-kernel&m=129557717826819&w=2
Handled-By	: Michael Karcher <kernel@mkarcher.dialup.fu-berlin.de>
Patch		: https://patchwork.kernel.org/patch/499221/

[Bug #27472] 5bd5a45 breaks resume from suspend on Thinkpad X201

[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 2.6.37.  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=27472
Subject		: 5bd5a45 breaks resume from suspend on Thinkpad X201
Submitter	: Björn Schließmann <chronoss@gmx.de>
Date		: 2011-01-23 23:24 (11 days old)
Handled-By	: CASTET Matthieu <castet.matthieu@free.fr>
Patch		: https://bugzilla.kernel.org/attachment.cgi?id=45192

[Bug #27652] 38-rc1: umount+rmmod cause ext4 error.

[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 2.6.37.  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=27652
Subject		: 38-rc1: umount+rmmod cause ext4 error.
Submitter	: Tao Ma <tm-d1IQDZat3X0@public.gmane.org>
Date		: 2011-01-19 6:53 (15 days old)
Message-ID	: <4D368A70.5030103-d1IQDZat3X0@public.gmane.org>
References	: http://marc.info/?l=linux-ext4&m=129542001031750&w=2

[Bug #27812] 2.6.38-rc2: acpi backlight control missing

[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 2.6.37.  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=27812
Subject		: 2.6.38-rc2: acpi backlight control missing
Submitter	: Thomas Meyer <thomas-VsYtu1Qij5c@public.gmane.org>
Date		: 2011-01-22 10:49 (12 days old)
First-Bad-Commit: http://git.kernel.org/linus/677bd810eedce61edf15452491781ff046b92edc
Message-ID	: <1295693349.2120.3.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
References	: http://marc.info/?l=linux-kernel&m=129569353414755&w=2

[Bug #27702] regression 2.6.37 -> 2.6.38-rc1: after suspend backlight cannot be adjusted

[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 2.6.37.  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=27702
Subject		: regression 2.6.37 -> 2.6.38-rc1: after suspend backlight cannot be adjusted
Submitter	: Norbert Preining <preining-DX+603jRYB8@public.gmane.org>
Date		: 2011-01-21 1:55 (13 days old)
Message-ID	: <20110121015529.GD9796-DqSSrKF0TaySnEC3TeqHn5dqbFPxfnh/@public.gmane.org>
References	: http://marc.info/?l=linux-kernel&m=129557717826819&w=2
Handled-By	: Michael Karcher <kernel-53cgGKa3i4734X6bwOH/f4/+3M+ant7aZ+vKCSbpVNE@public.gmane.org>
Patch		: https://patchwork.kernel.org/patch/499221/

[Bug #28052] [BUG] 2.6.38-rc2: Circular Locking Dependency

[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 2.6.37.  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=28052
Subject		: [BUG] 2.6.38-rc2: Circular Locking Dependency
Submitter	: Knut Petersen <Knut_Petersen@t-online.de>
Date		: 2011-01-24 9:25 (10 days old)
Message-ID	: <4D3D45A3.7040809@t-online.de>
References	: http://marc.info/?l=linux-kernel&m=129586118515443&w=2

[Bug #28102] New display errors in 2.6.38-rc2-00175-g6fb1b30

[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 2.6.37.  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=28102
Subject		: New display errors in 2.6.38-rc2-00175-g6fb1b30
Submitter	: Nico Schottelius <nico-kernel-20110117@schottelius.org>
Date		: 2011-01-28 20:29 (6 days old)
Message-ID	: <20110128202905.GB3395@schottelius.org>
References	: http://marc.info/?l=linux-kernel&m=129624657425949&w=2

[Bug #27862] Cannot launch X.org server on Core I5 with 2.6.38-rc2-git7

[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 2.6.37.  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=27862
Subject		: Cannot launch X.org server on Core I5 with 2.6.38-rc2-git7
Submitter	: Darisuz Luksza <dariusz.luksza@gmail.com>
Date		: 2011-01-30 12:13 (4 days old)
Handled-By	: Chris Wilson <chris@chris-wilson.co.uk>
Patch		: https://bugs.freedesktop.org/attachment.cgi?id=42634

[Bug #28012] [drm:i915_driver_load] *ERROR* failed to init modeset, EINVAL

[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 2.6.37.  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=28012
Subject		: [drm:i915_driver_load] *ERROR* failed to init modeset, EINVAL
Submitter	: Ferenc Wágner <wferi@niif.hu>
Date		: 2011-02-01 15:18 (2 days old)
Handled-By	: Chris Wilson <chris@chris-wilson.co.uk>
Patch		: https://bugzilla.kernel.org/attachment.cgi?id=45892

[Bug #28012] [drm:i915_driver_load] *ERROR* failed to init modeset, EINVAL

[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 2.6.37.  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=28012
Subject		: [drm:i915_driver_load] *ERROR* failed to init modeset, EINVAL
Submitter	: Ferenc Wágner <wferi-eEbw3PyuezQ@public.gmane.org>
Date		: 2011-02-01 15:18 (2 days old)
Handled-By	: Chris Wilson <chris-Y6uKTt2uX1cEflXRtASbqLVCufUGDwFn@public.gmane.org>
Patch		: https://bugzilla.kernel.org/attachment.cgi?id=45892

Re: [Bug #28102] New display errors in 2.6.38-rc2-00175-g6fb1b30

[Jesse Barnes]

On Thu,  3 Feb 2011 00:31:29 +0100 (CET)
"Rafael J. Wysocki" <rjw@sisk.pl> wrote:

> 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 2.6.37.  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=28102
> Subject		: New display errors in 2.6.38-rc2-00175-g6fb1b30
> Submitter	: Nico Schottelius <nico-kernel-20110117@schottelius.org>
> Date		: 2011-01-28 20:29 (6 days old)
> Message-ID	: <20110128202905.GB3395@schottelius.org>
> References	: http://marc.info/?l=linux-kernel&m=129624657425949&w=2

Does this also occur with the drm-intel-next branch?  Do you have a
picture of the corruption?

Thanks,
-- 
Jesse Barnes, Intel Open Source Technology Center

Re: [Bug #28102] New display errors in 2.6.38-rc2-00175-g6fb1b30

[Jesse Barnes]

On Thu,  3 Feb 2011 00:31:29 +0100 (CET)
"Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org> wrote:

> 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 2.6.37.  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=28102
> Subject		: New display errors in 2.6.38-rc2-00175-g6fb1b30
> Submitter	: Nico Schottelius <nico-kernel-20110117-xuaVFQXs+5hIG4jRRZ66WA@public.gmane.org>
> Date		: 2011-01-28 20:29 (6 days old)
> Message-ID	: <20110128202905.GB3395-xuaVFQXs+5hIG4jRRZ66WA@public.gmane.org>
> References	: http://marc.info/?l=linux-kernel&m=129624657425949&w=2

Does this also occur with the drm-intel-next branch?  Do you have a
picture of the corruption?

Thanks,
-- 
Jesse Barnes, Intel Open Source Technology Center

Re: [Bug #28102] New display errors in 2.6.38-rc2-00175-g6fb1b30

[Nico Schottelius]

Jesse Barnes [Thu, Feb 03, 2011 at 10:11:11AM -0800]:
> On Thu,  3 Feb 2011 00:31:29 +0100 (CET)
> "Rafael J. Wysocki" <rjw@sisk.pl> wrote:
> 
> > 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 2.6.37.  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=28102
> > Subject		: New display errors in 2.6.38-rc2-00175-g6fb1b30
> > Submitter	: Nico Schottelius <nico-kernel-20110117@schottelius.org>
> > Date		: 2011-01-28 20:29 (6 days old)
> > Message-ID	: <20110128202905.GB3395@schottelius.org>
> > References	: http://marc.info/?l=linux-kernel&m=129624657425949&w=2
> 
> Does this also occur with the drm-intel-next branch? 

Didn't try this one, went back to 2.6.37-rc4-00292-g3c8cdf9 now.

I thought about following the bisect way, should I go a different
one better?

> Do you have a picture of the corruption?

Not yet, can do one next time. Though I found one that looks
very similar to my corruption:

http://i759.photobucket.com/albums/xx239/ericfx1984/DSCF2469.jpg

Though in my case no character was visible anymore.

Cheers,

Nico


-- 
PGP key: 7ED9 F7D3 6B10 81D7 0EC5  5C09 D7DC C8E4 3187 7DF0

Re: [Bug #28102] New display errors in 2.6.38-rc2-00175-g6fb1b30

[Jesse Barnes]

On Thu, 3 Feb 2011 19:44:12 +0100
Nico Schottelius <nico-kernel-20110117@schottelius.org> wrote:

> Jesse Barnes [Thu, Feb 03, 2011 at 10:11:11AM -0800]:
> > On Thu,  3 Feb 2011 00:31:29 +0100 (CET)
> > "Rafael J. Wysocki" <rjw@sisk.pl> wrote:
> > 
> > > 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 2.6.37.  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=28102
> > > Subject		: New display errors in 2.6.38-rc2-00175-g6fb1b30
> > > Submitter	: Nico Schottelius <nico-kernel-20110117@schottelius.org>
> > > Date		: 2011-01-28 20:29 (6 days old)
> > > Message-ID	: <20110128202905.GB3395@schottelius.org>
> > > References	: http://marc.info/?l=linux-kernel&m=129624657425949&w=2
> > 
> > Does this also occur with the drm-intel-next branch? 
> 
> Didn't try this one, went back to 2.6.37-rc4-00292-g3c8cdf9 now.
> 
> I thought about following the bisect way, should I go a different
> one better?

Bisect would also be fine.

> > Do you have a picture of the corruption?
> 
> Not yet, can do one next time. Though I found one that looks
> very similar to my corruption:
> 
> http://i759.photobucket.com/albums/xx239/ericfx1984/DSCF2469.jpg

Interesting, ok.

-- 
Jesse Barnes, Intel Open Source Technology Center

Re: [Bug #28102] New display errors in 2.6.38-rc2-00175-g6fb1b30

[Jesse Barnes]

On Thu, 3 Feb 2011 19:44:12 +0100
Nico Schottelius <nico-kernel-20110117-xuaVFQXs+5hIG4jRRZ66WA@public.gmane.org> wrote:

> Jesse Barnes [Thu, Feb 03, 2011 at 10:11:11AM -0800]:
> > On Thu,  3 Feb 2011 00:31:29 +0100 (CET)
> > "Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> > 
> > > 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 2.6.37.  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=28102
> > > Subject		: New display errors in 2.6.38-rc2-00175-g6fb1b30
> > > Submitter	: Nico Schottelius <nico-kernel-20110117-xuaVFQXs+5hIG4jRRZ66WA@public.gmane.org>
> > > Date		: 2011-01-28 20:29 (6 days old)
> > > Message-ID	: <20110128202905.GB3395-xuaVFQXs+5hIG4jRRZ66WA@public.gmane.org>
> > > References	: http://marc.info/?l=linux-kernel&m=129624657425949&w=2
> > 
> > Does this also occur with the drm-intel-next branch? 
> 
> Didn't try this one, went back to 2.6.37-rc4-00292-g3c8cdf9 now.
> 
> I thought about following the bisect way, should I go a different
> one better?

Bisect would also be fine.

> > Do you have a picture of the corruption?
> 
> Not yet, can do one next time. Though I found one that looks
> very similar to my corruption:
> 
> http://i759.photobucket.com/albums/xx239/ericfx1984/DSCF2469.jpg

Interesting, ok.

-- 
Jesse Barnes, Intel Open Source Technology Center

Re: [Bug #28102] New display errors in 2.6.38-rc2-00175-g6fb1b30

[Nico Schottelius]

Chris Wilson <chris@chris-wilson.co.uk>:

> This should hopefully find the culprit:
> $ git bisect start drivers/gpu/drm/i915/intel_display.c
> $ git bisect good v2.6.37
> $ git bisect bad
 
Just went that path, compiled 2.6.37-rc4-00292-g3c8cdf9
and suspended which resulted in a completly dead device
(no ping, no ctrlaltdel possible), i.e. different fatal situation.

I'm a bit confused, not sure whether this is related to
the broken display issue or not.

As the tests always cost a quite lengthy fsck run, I'd
love to go a different way from 2.6.37, if anybody has
a better hint.

Cheers,

Nico

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Re: [Bug #28102] New display errors in 2.6.38-rc2-00175-g6fb1b30

[Nico Schottelius]

Chris Wilson <chris-Y6uKTt2uX1cEflXRtASbqLVCufUGDwFn@public.gmane.org>:

> This should hopefully find the culprit:
> $ git bisect start drivers/gpu/drm/i915/intel_display.c
> $ git bisect good v2.6.37
> $ git bisect bad
 
Just went that path, compiled 2.6.37-rc4-00292-g3c8cdf9
and suspended which resulted in a completly dead device
(no ping, no ctrlaltdel possible), i.e. different fatal situation.

I'm a bit confused, not sure whether this is related to
the broken display issue or not.

As the tests always cost a quite lengthy fsck run, I'd
love to go a different way from 2.6.37, if anybody has
a better hint.

Cheers,

Nico

-- 
PGP key: 7ED9 F7D3 6B10 81D7 0EC5  5C09 D7DC C8E4 3187 7DF0

Re: [Bug #27812] 2.6.38-rc2: acpi backlight control missing

[Zhang Rui]

On Thu, 2011-02-03 at 07:31 +0800, Rafael J. Wysocki wrote:
> 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 2.6.37.  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=27812
> Subject		: 2.6.38-rc2: acpi backlight control missing
> Submitter	: Thomas Meyer <thomas@m3y3r.de>
> Date		: 2011-01-22 10:49 (12 days old)
> First-Bad-Commit: http://git.kernel.org/linus/677bd810eedce61edf15452491781ff046b92edc
> Message-ID	: <1295693349.2120.3.camel@localhost.localdomain>
> References	: http://marc.info/?l=linux-kernel&m=129569353414755&w=2
> 
this has been verified to be a duplicate of bug
https://bugzilla.kernel.org/show_bug.cgi?id=27702, and the patch at
https://patchwork.kernel.org/patch/499221/ is a proper fix.

thanks,
rui

Re: [Bug #27812] 2.6.38-rc2: acpi backlight control missing

[Zhang Rui]

On Thu, 2011-02-03 at 07:31 +0800, Rafael J. Wysocki wrote:
> 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 2.6.37.  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=27812
> Subject		: 2.6.38-rc2: acpi backlight control missing
> Submitter	: Thomas Meyer <thomas-VsYtu1Qij5c@public.gmane.org>
> Date		: 2011-01-22 10:49 (12 days old)
> First-Bad-Commit: http://git.kernel.org/linus/677bd810eedce61edf15452491781ff046b92edc
> Message-ID	: <1295693349.2120.3.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
> References	: http://marc.info/?l=linux-kernel&m=129569353414755&w=2
> 
this has been verified to be a duplicate of bug
https://bugzilla.kernel.org/show_bug.cgi?id=27702, and the patch at
https://patchwork.kernel.org/patch/499221/ is a proper fix.

thanks,
rui

[Bug 27652] 38-rc1: umount+rmmod cause ext4 error.

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=27652


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

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




--- Comment #17 from Rafael J. Wysocki <rjw@sisk.pl>  2011-02-12 22:38:59 ---
Fixed by commit d863b50ab01333659314c2034890cb76d9fdc3c7 .

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--- Comment #16 from Rafael J. Wysocki <rjw@sisk.pl>  2011-02-09 09:42:53 ---
Handled-By : Boaz Harrosh <bharrosh@panasas.com>

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[Bug 27652] 38-rc1: umount+rmmod cause ext4 error.

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Florian Mickler <florian@mickler.org> changed:

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




--- Comment #15 from Florian Mickler <florian@mickler.org>  2011-02-09 04:50:23 ---
Patch: http://marc.info/?l=linux-fsdevel&m=129718595331581&w=2

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--- Comment #14 from Tao Ma <tm@tao.ma>  2011-02-09 02:01:04 ---
http://marc.info/?l=linux-fsdevel&m=129718595331581&w=2

I have tested this patch and it can resolve this bug. So please close it.
Thanks.

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--- Comment #13 from Florian Mickler <florian@mickler.org>  2011-01-31 17:57:09 ---
Ignore-Patch: https://bugzilla.kernel.org/show_bug.cgi?id=27652#c6

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--- Comment #12 from Florian Mickler <florian@mickler.org>  2011-01-31 17:55:30 ---
No problem, the regression team is up to a severe game of last man standing :)

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--- Comment #11 from Eric Sandeen <sandeen@redhat.com>  2011-01-31 16:07:56 ---
Seems we have about 4 regressions all tracked in 1 bugzilla, sadly.  1 bug per
regression would work better... though partly my fault for getting OT on the
original bug.

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Florian Mickler <florian@mickler.org> changed:

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




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Florian Mickler <florian@mickler.org> changed:

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




--- Comment #10 from Florian Mickler <florian@mickler.org>  2011-01-30 19:47:35 ---
Well, the bugzilla could use a little love. Only the reporter or an obscure
group of people can change the status of bugs (as far as I know). But it is
also not possible to change the reporter. Don't know. Here you go...

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--- Comment #9 from Tao Ma <tm@tao.ma>  2011-01-30 02:41:57 ---
An off-topic question. How can I reopen this bug? I can't find a button to
reopen it to 'New' or 'Not Fixed'?

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--- Comment #8 from Tao Ma <tm@tao.ma>  2011-01-30 02:36:58 ---
(In reply to comment #7)
> Patch: https://bugzilla.kernel.org/show_bug.cgi?id=27652#c6 
> 
> Tao Ma, does this work for you too?

Hi sorry for the delay.
So the patch works for the kernel panic.
Reported-and-Tested-by: Tao Ma <boyu.mt@taobao.com>

As for the original bug, it doesn't help. I can still get the error message.

slab error in kmem_cache_destroy(): cache `ext4_inode_cache': Can't free all
objects
Pid: 4674, comm: rmmod Not tainted 2.6.38-rc2+ #1
Call Trace:
 [<ffffffff820d61ac>] ? kmem_cache_destroy+0x83/0xc7
 [<ffffffffa03a9000>] ? destroy_inodecache+0x15/0x17 [ext4]
 [<ffffffffa03c7264>] ? ext4_exit_fs+0x30/0x60 [ext4]
 [<ffffffff82067bce>] ? sys_delete_module+0x1b5/0x218
 [<ffffffff8207506f>] ? audit_syscall_entry+0x187/0x1ba
 [<ffffffff82002a6b>] ? system_call_fastpath+0x16/0x1b
SLAB: cache with size 888 has lost its name

And as I pointed in the original mail, I have done some basic investigation and
it looks as if it is introduced by Nick's new ext4_i_callback.

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Florian Mickler <florian@mickler.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |florian@mickler.org
         Resolution|                            |PATCH_ALREADY_AVAILABLE




--- Comment #7 from Florian Mickler <florian@mickler.org>  2011-01-29 12:02:12 ---
Patch: https://bugzilla.kernel.org/show_bug.cgi?id=27652#c6 

Tao Ma, does this work for you too?

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--- Comment #6 from Eric Sandeen <sandeen@redhat.com>  2011-01-28 22:07:53 ---
Ok it is in fact lazyinit uninit that's falling down, the wait_event is waiting
on something that gets freed.

This fixes it up for me:

Index: linux-2.6/fs/ext4/super.c
===================================================================
--- linux-2.6.orig/fs/ext4/super.c
+++ linux-2.6/fs/ext4/super.c
@@ -77,6 +77,7 @@ static struct dentry *ext4_mount(struct 
                const char *dev_name, void *data);
 static void ext4_destroy_lazyinit_thread(void);
 static void ext4_unregister_li_request(struct super_block *sb);
+static void ext4_clear_request_list(void);

 #if !defined(CONFIG_EXT3_FS) && !defined(CONFIG_EXT3_FS_MODULE) &&
defined(CONFIG_EXT4_USE_FOR_EXT23)
 static struct file_system_type ext3_fs_type = {
@@ -2704,6 +2705,8 @@ static void ext4_unregister_li_request(s
     mutex_unlock(&ext4_li_info->li_list_mtx);
 }

+static struct task_struct *ext4_lazyinit_task;
+
 /*
  * This is the function where ext4lazyinit thread lives. It walks
  * through the request list searching for next scheduled filesystem.
@@ -2772,6 +2775,10 @@ cont_thread:
         if (time_before(jiffies, next_wakeup))
             schedule();
         finish_wait(&eli->li_wait_daemon, &wait);
+        if (kthread_should_stop()) {
+            ext4_clear_request_list();
+            goto exit_thread;
+        }
     }

 exit_thread:
@@ -2796,6 +2803,7 @@ exit_thread:
     wake_up(&eli->li_wait_task);

     kfree(ext4_li_info);
+    ext4_lazyinit_task = NULL;
     ext4_li_info = NULL;
     mutex_unlock(&ext4_li_mtx);

@@ -2818,11 +2826,10 @@ static void ext4_clear_request_list(void

 static int ext4_run_lazyinit_thread(void)
 {
-    struct task_struct *t;
-
-    t = kthread_run(ext4_lazyinit_thread, ext4_li_info, "ext4lazyinit");
-    if (IS_ERR(t)) {
-        int err = PTR_ERR(t);
+    ext4_lazyinit_task = kthread_run(ext4_lazyinit_thread,
+                     ext4_li_info, "ext4lazyinit");
+    if (IS_ERR(ext4_lazyinit_task)) {
+        int err = PTR_ERR(ext4_lazyinit_task);
         ext4_clear_request_list();
         del_timer_sync(&ext4_li_info->li_timer);
         kfree(ext4_li_info);
@@ -2976,13 +2983,7 @@ static void ext4_destroy_lazyinit_thread
     if (!ext4_li_info)
         return;

-    ext4_clear_request_list();

[Bug 27652] 38-rc1: umount+rmmod cause ext4 error.

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--- Comment #5 from Eric Sandeen <sandeen@redhat.com>  2011-01-28 17:32:13 ---
I could also be off base ;)  Is the filesystem under test created with the
lazy_itable_init feature?

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--- Comment #3 from Tao Ma <tm@tao.ma>  2011-01-28 09:51:52 ---
Just tested with 37+the 2 patches. Still the same error.
So it isn't a 38 problem really.


BUG: unable to handle kernel NULL pointer dereference at 0000000000000020
IP: [<ffffffff8233dabb>] _raw_spin_lock_irqsave+0x11/0x22
PGD 122b58067 PUD 122594067 PMD 0 
Oops: 0002 [#1] SMP 
last sysfs file: /sys/devices/virtual/misc/autofs/dev
CPU 1 
Modules linked in: ext4(-) jbd2 ipv6 autofs4 hidp rfcomm l2cap crc16 bluetooth
rfkill ocfs2_dlmfs ocfs2_stack_o2cb ocfs2_dlm ocfs2_nodemanager ocfs2_stackglue
configfs cpufreq_ondemand acpi_cpufreq dm_mirror video output sbs sbshc battery
acpi_memhotplug ac lp sg snd_hda_codec_analog snd_hda_intel snd_hda_codec
snd_seq_dummy snd_seq_oss option usb_wwan snd_seq_midi_event snd_seq
snd_seq_device snd_pcm_oss usbserial snd_mixer_oss snd_pcm snd_timer rtc_cmos
snd rtc_core tpm_tis tpm i2c_i801 shpchp parport_pc parport serio_raw button
soundcore rtc_lib tpm_bios pcspkr dcdbas e1000e i2c_core snd_page_alloc
dm_region_hash dm_log dm_mod usb_storage ahci libahci libata sd_mod scsi_mod
ext3 jbd uhci_hcd ohci_hcd ehci_hcd

Pid: 4717, comm: rmmod Not tainted 2.6.37+ #2 0V4W66/OptiPlex 780               
RIP: 0010:[<ffffffff8233dabb>]  [<ffffffff8233dabb>]
_raw_spin_lock_irqsave+0x11/0x22
RSP: 0018:ffff88011f7ade48  EFLAGS: 00010046
RAX: 0000000000000246 RBX: ffff88011f7ade98 RCX: 00000000c0000100
RDX: 0000000000000100 RSI: ffff88011f7ade98 RDI: 0000000000000020
RBP: ffff88011f7ade48 R08: ffff88011f7ac000 R09: ffff8800cfa0da70
R10: ffff8800cfa51a00 R11: ffff88011f7add48 R12: 0000000000000020
R13: 0000000000000002 R14: 00007fff3d3ad400 R15: 0000000000000880
FS:  00007fe07ff0e6e0(0000) GS:ffff8800cfa40000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000020 CR3: 000000011ee14000 CR4: 00000000000406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process rmmod (pid: 4717, threadinfo ffff88011f7ac000, task ffff88012358f8d0)
Stack:
 ffff88011f7ade88 ffffffff82056d4e ffffffff8206a6e4 ffff88011f7ade98
 ffff88011f7ade98 ffffffffa0441500 0000000000000880 00007fff3d3ad400
 ffff88011f7aded8 ffffffffa0433428 0000000000000000 ffff88012358f8d0
Call Trace:
 [<ffffffff82056d4e>] prepare_to_wait+0x25/0x7b
 [<ffffffff8206a6e4>] ? __try_stop_module+0x0/0x3d
 [<ffffffffa0433428>] ext4_exit_fs+0x94/0x112 [ext4]
 [<ffffffff82056b4b>] ? autoremove_wake_function+0x0/0x3d
 [<ffffffff82069127>] sys_delete_module+0x1b5/0x218
 [<ffffffff820c26f9>] ? do_munmap+0x2e2/0x318
 [<ffffffff820767db>] ? audit_syscall_entry+0x1d6/0x209
 [<ffffffff82002aeb>] system_call_fastpath+0x16/0x1b
Code: 1f 44 00 00 b8 00 01 00 00 f0 66 0f c1 07 38 e0 74 06 f3 90 8a 07 eb f6
c9 c3 55 48 89 e5 0f 1f 44 00 00 9c 58 fa ba 00 01 00 00 <f0> 66 0f c1 17 38 f2
74 06 f3 90 8a 17 eb f6 c9 c3 55 48 89 e5 
RIP  [<ffffffff8233dabb>] _raw_spin_lock_irqsave+0x11/0x22
 RSP <ffff88011f7ade48>
CR2: 0000000000000020
---[ end trace e0bdca5906fdcbe6 ]---

--- Comment #4 from Eric Sandeen <sandeen@redhat.com>  2011-01-28 17:15:01 ---
Is that last oops with or without the patches I pointed at?

That might be in here:

static void ext4_destroy_lazyinit_thread(void)
{
        /*
         * If thread exited earlier
         * there's nothing to be done.
         */
        if (!ext4_li_info)
                return;

        ext4_clear_request_list();

        while (ext4_li_info->li_task) {
                wake_up(&ext4_li_info->li_wait_daemon);
                wait_event(ext4_li_info->li_wait_task,
                           ext4_li_info->li_task == NULL);
        }
}

> BUG: unable to handle kernel NULL pointer dereference at 0000000000000020

li_wait_task is 0x20 into the ext4_lazy_init struct... did ext4_li_info go
away?
It does get freed and set to NULL when the lazyinit thread exits.  I'm guessing
we need a little judicial application of ext4_li_mtx in the teardown thread.

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[Bug 27652] 38-rc1: umount+rmmod cause ext4 error.

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https://bugzilla.kernel.org/show_bug.cgi?id=27652


Tao Ma <tm@tao.ma> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tm@tao.ma




--- Comment #2 from Tao Ma <tm@tao.ma>  2011-01-28 06:01:10 ---
ok, so I have applied the 2 patches. And now I did hit another bug every time,
I have tried to revert these 2 patches. And it still show up every time. I use
38-rc2 now. So Maciej, is it necessary to open another bug for it?

BUG: unable to handle kernel NULL pointer dereference at 0000000000000020
IP: [<ffffffff8233d343>] _raw_spin_lock_irqsave+0x11/0x22
PGD 12292c067 PUD 10fdb6067 PMD 0 
Oops: 0002 [#1] SMP 
last sysfs file: /sys/devices/pci0000:00/0000:00:19.0/irq
CPU 1 
Modules linked in: ext4(-) jbd2 ipv6 autofs4 hidp rfcomm l2cap crc16 bluetooth
rfkill ocfs2_dlmfs ocfs2_stack_o2cb ocfs2_dlm ocfs2_nodemanager ocfs2_stackglue
configfs lockd sunrpc cpufreq_ondemand acpi_cpufreq dm_mirror video sbs sbshc
battery acpi_memhotplug ac lp sg snd_hda_codec_analog snd_hda_intel
snd_hda_codec snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq
snd_seq_device snd_pcm_oss snd_mixer_oss snd_pcm option usb_wwan usbserial
rtc_cmos tpm_tis snd_timer snd soundcore tpm pcspkr i2c_i801 parport_pc e1000e
serio_raw dcdbas shpchp rtc_core rtc_lib i2c_core parport snd_page_alloc button
tpm_bios dm_region_hash dm_log dm_mod usb_storage ahci libahci libata sd_mod
scsi_mod ext3 jbd uhci_hcd ohci_hcd ehci_hcd [last unloaded: microcode]

Pid: 4015, comm: rmmod Not tainted 2.6.38-rc2+ #30 0V4W66/OptiPlex 780          
RIP: 0010:[<ffffffff8233d343>]  [<ffffffff8233d343>]
_raw_spin_lock_irqsave+0x11/0x22
RSP: 0018:ffff88010fdbbe48  EFLAGS: 00010046
RAX: 0000000000000246 RBX: ffff88010fdbbe98 RCX: 00000000c0000100
RDX: 0000000000000100 RSI: ffff88010fdbbe98 RDI: 0000000000000020
RBP: ffff88010fdbbe48 R08: ffff88010fdba000 R09: ffff8800cfa0da70
R10: ffffffff82069498 R11: 0000000000000000 R12: 0000000000000020
R13: 0000000000000002 R14: 00007fffa52c5c60 R15: 0000000000000880
FS:  00007f7dd0d016e0(0000) GS:ffff8800cfa40000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000020 CR3: 000000011dc48000 CR4: 00000000000406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process rmmod (pid: 4015, threadinfo ffff88010fdba000, task ffff88012271e180)
Stack:
 ffff88010fdbbe88 ffffffff82055ee2 ffffffff82069498 ffff88010fdbbe98
 ffff88010fdbbe98 ffffffffa04d8440 0000000000000880 00007fffa52c5c60
 ffff88010fdbbed8 ffffffffa04ca2cc 0000000000000000 ffff88012271e180
Call Trace:
 [<ffffffff82055ee2>] prepare_to_wait+0x25/0x7b
 [<ffffffff82069498>] ? __try_stop_module+0x0/0x3d
 [<ffffffffa04ca2cc>] ext4_exit_fs+0x94/0x112 [ext4]
 [<ffffffff82055cdf>] ? autoremove_wake_function+0x0/0x3d
 [<ffffffff82067bce>] sys_delete_module+0x1b5/0x218
 [<ffffffff8207506f>] ? audit_syscall_entry+0x187/0x1ba
 [<ffffffff82002a6b>] system_call_fastpath+0x16/0x1b
Code: 1f 44 00 00 b8 00 01 00 00 f0 66 0f c1 07 38 e0 74 06 f3 90 8a 07 eb f6
c9 c3 55 48 89 e5 0f 1f 44 00 00 9c 58 fa ba 00 01 00 00 <f0> 66 0f c1 17 38 f2
74 06 f3 90 8a 17 eb f6 c9 c3 55 48 89 e5 
RIP  [<ffffffff8233d343>] _raw_spin_lock_irqsave+0x11/0x22
 RSP <ffff88010fdbbe48>
CR2: 0000000000000020
---[ end trace ec9d834b678544aa ]---

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[Bug 27652] 38-rc1: umount+rmmod cause ext4 error.

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Eric Sandeen <sandeen@redhat.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sandeen@redhat.com




--- Comment #1 from Eric Sandeen <sandeen@redhat.com>  2011-01-26 20:41:05 ---
I believe patches have been sent that should fix this; there were
2 module unloading regressions in .37, both fixed.

If you can test with:

http://marc.info/?l=linux-ext4&m=129546975702198&w=2
and
http://marc.info/?l=linux-ext4&m=129527644524410&w=2

that'd be great.

Thanks,
-Eric

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |27352




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