2.6.33-rc6: Reported regressions from 2.6.32

2.6.33-rc6: Reported regressions from 2.6.32

[Rafael J. Wysocki]

This message contains a list of some regressions from 2.6.32, for which there
are no fixes in the mainline I know of.  If any of them have been fixed already,
please let me know.

If you know of any other unresolved regressions from 2.6.32, please let me know
either and I'll add them to the list.  Also, please let me know if any of the
entries below are invalid.

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


Listed regressions statistics:

  Date          Total  Pending  Unresolved
  ----------------------------------------
  2010-02-01       85       26          21
  2010-01-24       75       29          23
  2010-01-10       55       33          21
  2009-12-29       36       34          27


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

Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15202
Subject		: lockdep warning during elevator_switch
Submitter	: Hugh Dickins <hugh.dickins-IWqWACnzNjwqdlJmJB21zg@public.gmane.org>
Date		: 2010-01-31 23:55 (1 days old)
References	: http://marc.info/?l=linux-kernel&m=126498212613051&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15200
Subject		: NFS problems in 2.6.33-rc6: Unknown error 526
Submitter	: J.A. Magallón <jamagallon-sh/6fXdz2Rs@public.gmane.org>
Date		: 2010-01-31 22:46 (1 days old)
References	: http://marc.info/?l=linux-kernel&m=126497800408928&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15199
Subject		: sata_nv and no /dev files
Submitter	: Bartłomiej Zimoń <uzi18-h7QdYz1kt/Q@public.gmane.org>
Date		: 2010-01-31 23:45 (1 days old)
References	: http://marc.info/?l=linux-kernel&m=126498153112488&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15196
Subject		: kmem_cache_create: duplicate cache ccid2_h
Submitter	: Heinz Diehl <htd-HjJ2MNWy62to6+H+lsi3Gti2O/JbrIOy@public.gmane.org>
Date		: 2010-01-30 18:33 (2 days old)
References	: http://marc.info/?l=linux-kernel&m=126487640324942&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15192
Subject		: netperf ~50% regression with 2.6.33-rc1, bisect to 1b9508f
Submitter	: Lin Ming <ming.m.lin-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Date		: 2010-01-25 10:03 (7 days old)
First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1b9508f6831e10d53256825de8904caa22d1ca2c
References	: http://marc.info/?l=linux-kernel&m=126441481427331&w=4
Handled-By	: Mike Galbraith <efault-Mmb7MZpHnFY@public.gmane.org>
		  Peter Zijlstra <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15144
Subject		: HDA Intel Audio hang on boot
Submitter	: Sid Boyce <sboyce-QgLWrMLu8clzjhtm8Ag3mw@public.gmane.org>
Date		: 2010-01-15 1:24 (17 days old)
References	: http://marc.info/?l=linux-kernel&m=126351866722507&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15142
Subject		: "INFO: possible circular locking dependency detected"
Submitter	: Matti Aarnio <matti.aarnio--kernel-bugzilla-VYF+RMHuKCpAfugRpC6u6w@public.gmane.org>
Date		: 2010-01-25 13:38 (7 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15139
Subject		: e1000: transmit queue 0 timed out
Submitter	: Alexander Beregalov <a.beregalov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2010-01-23 15:37 (9 days old)
References	: http://marc.info/?l=linux-netdev&m=126426149306083&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15138
Subject		: evdev regression on macbook
Submitter	: Guillaume Chazarain <guichaz-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2010-01-23 18:53 (9 days old)
References	: http://marc.info/?l=linux-kernel&m=126427286219235&w=4
Handled-By	: Dmitry Torokhov <dmitry.torokhov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15125
Subject		: hung task - jbd2/dm-1-8 (during raid rebuild)
Submitter	: Michael Breuer <mbreuer-P//MSfjsEjDQT0dZR+AlfA@public.gmane.org>
Date		: 2010-01-10 21:47 (22 days old)
References	: http://marc.info/?l=linux-kernel&m=126316012025978&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15124
Subject		: PCI host bridge windows ignored (works with pci=use_crs)
Submitter	: Jeff Garrett <jeff-184d8XiO+QJg9hUCZPvPmw@public.gmane.org>
Date		: 2010-01-13 5:37 (19 days old)
References	: http://marc.info/?l=linux-kernel&m=126336296600307&w=4
Handled-By	: Yinghai Lu <yinghai-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
		  Bjorn Helgaas <bjorn.helgaas-VXdhtT5mjnY@public.gmane.org>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15119
Subject		: iwl_bg_scan_completed: WARN on scan complete
Submitter	: Alex Zhavnerchik <alex.vizor-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2010-01-24 12:27 (8 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15114
Subject		: X.org hang with [drm:i915_gem_do_execbuffer] *ERROR* in dmesg
Submitter	: Matej Laitl <strohel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2010-01-23 19:54 (9 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15076
Subject		: System panic under load with clockevents_program_event
Submitter	: okias <d.okias-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2010-01-17 13:03 (15 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15043
Subject		: Display goes off with i915.powersave=1 after suspend-resume
Submitter	: Soeren Sonnenburg <sonne-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
Date		: 2010-01-10 20:09 (22 days old)
References	: http://marc.info/?l=linux-kernel&m=126315457519505&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15036
Subject		: soft lockup in dmesg after suspend/resume
Submitter	: ykzhao <yakui.zhao-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Date		: 2010-01-04 5:36 (28 days old)
References	: http://marc.info/?l=linux-kernel&m=126258356202722&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15025
Subject		: Oops in ext4 driver
Submitter	: Steinar H. Gunderson <sgunderson-jG/AHqQBv7lBDgjK7y7TUQ@public.gmane.org>
Date		: 2010-01-10 13:09 (22 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14999
Subject		: possible circular locking dependency detected in rfkill at suspend
Submitter	: Christian Casteyde <casteyde.christian-GANU6spQydw@public.gmane.org>
Date		: 2010-01-06 21:52 (26 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14950
Subject		: tbench regression with 2.6.33-rc1
Submitter	: Lin Ming <ming.m.lin-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Date		: 2009-12-25 11:11 (38 days old)
References	: http://marc.info/?l=linux-kernel&m=126174044213172&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14937
Subject		: WARNING: at kernel/lockdep.c:2830
Submitter	: Grant Wilson <grant.wilson-1HOZaDBbGgxaa/9Udqfwiw@public.gmane.org>
Date		: 2009-12-27 13:35 (36 days old)
References	: http://marc.info/?l=linux-kernel&m=126192220404829&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14792
Subject		: Misdetection of the TV output
Submitter	: Santi <santi-wpr36wD7VxHR7s880joybQ@public.gmane.org>
Date		: 2009-12-12 13:28 (51 days old)
First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=27dfaf4f5825a119305db1bc63bef30ed400e376
Handled-By	: Zhao Yakui <yakui.zhao-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>


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

Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15198
Subject		: Radeon KMS regression
Submitter	: Kevin Winchester <kjwinchester-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2010-01-30 17:18 (2 days old)
First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=42590a75019a50012f25a962246498dead428433
References	: http://marc.info/?l=linux-kernel&m=126487191019612&w=4
Handled-By	: FUJITA Tomonori <fujita.tomonori-Zyj7fXuS5i5L9jVzuh4AOg@public.gmane.org>
Patch		: http://patchwork.kernel.org/patch/75023/


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15195
Subject		: kernel BUG at include/net/netns/generic.h:41, pfkey_create+0x36/0x18b [af_key]
Submitter	: Luca Tettamanti <kronos.it-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2010-01-30 13:23 (2 days old)
References	: http://marc.info/?l=linux-netdev&m=126485785004775&w=4
Handled-By	: Alexey Dobriyan <adobriyan-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Patch		: http://patchwork.kernel.org/patch/75891/


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15039
Subject		: leds_alix2: can't allocate I/O for GPIO
Submitter	: Arnd Hannemann <hannemann-JasiFyN5vQG662+jY7v6MhvVK+yQ3ZXh@public.gmane.org>
Date		: 2010-01-07 10:26 (25 days old)
References	: http://marc.info/?l=linux-kernel&m=126286001106257&w=4
Handled-By	: Daniel Mack <daniel-rDUAYElUppE@public.gmane.org>
Patch		: http://patchwork.kernel.org/patch/72006/


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14949
Subject		: drm_vm.c:drm_mmap: possible circular locking dependency detected
Submitter	: Borislav Petkov <petkovbb-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org>
Date		: 2009-12-26 9:45 (37 days old)
References	: http://marc.info/?l=linux-kernel&m=126182073616279&w=4
Handled-By	: Eric W. Biederman <ebiederm-BGArkANP9klv6pq1l3V1OdBPR1lH4CV8@public.gmane.org>
Patch		: http://patchwork.kernel.org/patch/70461/


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14791
Subject		: Something has been broken in the network stack this week
Submitter	: Delete This Account <speedyboyinovator-PkbjNfxxIARBDgjK7y7TUQ@public.gmane.org>
Date		: 2009-12-12 13:06 (51 days old)
Handled-By	: Ben Hutchings <ben-/+tVBieCtBitmTQ+vhA3Yw@public.gmane.org>
Patch		: http://patchwork.kernel.org/patch/72073/


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 2.6.32,
unresolved as well as resolved, at:

http://bugzilla.kernel.org/show_bug.cgi?id=14885

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

Thanks,
Rafael

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[Bug #14791] Something has been broken in the network stack this week

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14791
Subject		: Something has been broken in the network stack this week
Submitter	: Delete This Account <speedyboyinovator-PkbjNfxxIARBDgjK7y7TUQ@public.gmane.org>
Date		: 2009-12-12 13:06 (51 days old)
Handled-By	: Ben Hutchings <ben-/+tVBieCtBitmTQ+vhA3Yw@public.gmane.org>
Patch		: http://patchwork.kernel.org/patch/72073/

[Bug #14937] WARNING: at kernel/lockdep.c:2830

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14937
Subject		: WARNING: at kernel/lockdep.c:2830
Submitter	: Grant Wilson <grant.wilson-1HOZaDBbGgxaa/9Udqfwiw@public.gmane.org>
Date		: 2009-12-27 13:35 (36 days old)
References	: http://marc.info/?l=linux-kernel&m=126192220404829&w=4

[Bug #14950] tbench regression with 2.6.33-rc1

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14950
Subject		: tbench regression with 2.6.33-rc1
Submitter	: Lin Ming <ming.m.lin@intel.com>
Date		: 2009-12-25 11:11 (38 days old)
References	: http://marc.info/?l=linux-kernel&m=126174044213172&w=4

[Bug #14949] drm_vm.c:drm_mmap: possible circular locking dependency detected

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14949
Subject		: drm_vm.c:drm_mmap: possible circular locking dependency detected
Submitter	: Borislav Petkov <petkovbb@googlemail.com>
Date		: 2009-12-26 9:45 (37 days old)
References	: http://marc.info/?l=linux-kernel&m=126182073616279&w=4
Handled-By	: Eric W. Biederman <ebiederm@aristanetworks.com>
Patch		: http://patchwork.kernel.org/patch/70461/

[Bug #14999] possible circular locking dependency detected in rfkill at suspend

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14999
Subject		: possible circular locking dependency detected in rfkill at suspend
Submitter	: Christian Casteyde <casteyde.christian-GANU6spQydw@public.gmane.org>
Date		: 2010-01-06 21:52 (26 days old)

[Bug #14792] Misdetection of the TV output

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14792
Subject		: Misdetection of the TV output
Submitter	: Santi <santi@agolina.net>
Date		: 2009-12-12 13:28 (51 days old)
First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=27dfaf4f5825a119305db1bc63bef30ed400e376
Handled-By	: Zhao Yakui <yakui.zhao@intel.com>

[Bug #15025] Oops in ext4 driver

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15025
Subject		: Oops in ext4 driver
Submitter	: Steinar H. Gunderson <sgunderson@bigfoot.com>
Date		: 2010-01-10 13:09 (22 days old)

[Bug #15036] soft lockup in dmesg after suspend/resume

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15036
Subject		: soft lockup in dmesg after suspend/resume
Submitter	: ykzhao <yakui.zhao-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Date		: 2010-01-04 5:36 (28 days old)
References	: http://marc.info/?l=linux-kernel&m=126258356202722&w=4

[Bug #15039] leds_alix2: can't allocate I/O for GPIO

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15039
Subject		: leds_alix2: can't allocate I/O for GPIO
Submitter	: Arnd Hannemann <hannemann@nets.rwth-aachen.de>
Date		: 2010-01-07 10:26 (25 days old)
References	: http://marc.info/?l=linux-kernel&m=126286001106257&w=4
Handled-By	: Daniel Mack <daniel@caiaq.de>
Patch		: http://patchwork.kernel.org/patch/72006/

[Bug #15076] System panic under load with clockevents_program_event

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15076
Subject		: System panic under load with clockevents_program_event
Submitter	: okias <d.okias-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2010-01-17 13:03 (15 days old)

[Bug #15119] iwl_bg_scan_completed: WARN on scan complete

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15119
Subject		: iwl_bg_scan_completed: WARN on scan complete
Submitter	: Alex Zhavnerchik <alex.vizor@gmail.com>
Date		: 2010-01-24 12:27 (8 days old)

[Bug #15043] Display goes off with i915.powersave=1 after suspend-resume

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15043
Subject		: Display goes off with i915.powersave=1 after suspend-resume
Submitter	: Soeren Sonnenburg <sonne-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
Date		: 2010-01-10 20:09 (22 days old)
References	: http://marc.info/?l=linux-kernel&m=126315457519505&w=4

[Bug #15114] X.org hang with [drm:i915_gem_do_execbuffer] *ERROR* in dmesg

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15114
Subject		: X.org hang with [drm:i915_gem_do_execbuffer] *ERROR* in dmesg
Submitter	: Matej Laitl <strohel@gmail.com>
Date		: 2010-01-23 19:54 (9 days old)

[Bug #15124] PCI host bridge windows ignored (works with pci=use_crs)

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15124
Subject		: PCI host bridge windows ignored (works with pci=use_crs)
Submitter	: Jeff Garrett <jeff-184d8XiO+QJg9hUCZPvPmw@public.gmane.org>
Date		: 2010-01-13 5:37 (19 days old)
References	: http://marc.info/?l=linux-kernel&m=126336296600307&w=4
Handled-By	: Yinghai Lu <yinghai-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
		  Bjorn Helgaas <bjorn.helgaas-VXdhtT5mjnY@public.gmane.org>

[Bug #15125] hung task - jbd2/dm-1-8 (during raid rebuild)

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15125
Subject		: hung task - jbd2/dm-1-8 (during raid rebuild)
Submitter	: Michael Breuer <mbreuer-P//MSfjsEjDQT0dZR+AlfA@public.gmane.org>
Date		: 2010-01-10 21:47 (22 days old)
References	: http://marc.info/?l=linux-kernel&m=126316012025978&w=4

[Bug #15139] e1000: transmit queue 0 timed out

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15139
Subject		: e1000: transmit queue 0 timed out
Submitter	: Alexander Beregalov <a.beregalov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2010-01-23 15:37 (9 days old)
References	: http://marc.info/?l=linux-netdev&m=126426149306083&w=4

[Bug #15138] evdev regression on macbook

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15138
Subject		: evdev regression on macbook
Submitter	: Guillaume Chazarain <guichaz-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date		: 2010-01-23 18:53 (9 days old)
References	: http://marc.info/?l=linux-kernel&m=126427286219235&w=4
Handled-By	: Dmitry Torokhov <dmitry.torokhov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>

[Bug #15144] HDA Intel Audio hang on boot

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15144
Subject		: HDA Intel Audio hang on boot
Submitter	: Sid Boyce <sboyce-QgLWrMLu8clzjhtm8Ag3mw@public.gmane.org>
Date		: 2010-01-15 1:24 (17 days old)
References	: http://marc.info/?l=linux-kernel&m=126351866722507&w=4

[Bug #15142] "INFO: possible circular locking dependency detected"

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15142
Subject		: "INFO: possible circular locking dependency detected"
Submitter	: Matti Aarnio <matti.aarnio--kernel-bugzilla-VYF+RMHuKCpAfugRpC6u6w@public.gmane.org>
Date		: 2010-01-25 13:38 (7 days old)

[Bug #15192] netperf ~50% regression with 2.6.33-rc1, bisect to 1b9508f

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15192
Subject		: netperf ~50% regression with 2.6.33-rc1, bisect to 1b9508f
Submitter	: Lin Ming <ming.m.lin-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Date		: 2010-01-25 10:03 (7 days old)
First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1b9508f6831e10d53256825de8904caa22d1ca2c
References	: http://marc.info/?l=linux-kernel&m=126441481427331&w=4
Handled-By	: Mike Galbraith <efault-Mmb7MZpHnFY@public.gmane.org>
		  Peter Zijlstra <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>

[Bug #15195] kernel BUG at include/net/netns/generic.h:41, pfkey_create+0x36/0x18b [af_key]

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15195
Subject		: kernel BUG at include/net/netns/generic.h:41, pfkey_create+0x36/0x18b [af_key]
Submitter	: Luca Tettamanti <kronos.it@gmail.com>
Date		: 2010-01-30 13:23 (2 days old)
References	: http://marc.info/?l=linux-netdev&m=126485785004775&w=4
Handled-By	: Alexey Dobriyan <adobriyan@gmail.com>
Patch		: http://patchwork.kernel.org/patch/75891/

[Bug #15196] kmem_cache_create: duplicate cache ccid2_h

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15196
Subject		: kmem_cache_create: duplicate cache ccid2_h
Submitter	: Heinz Diehl <htd@fancy-poultry.org>
Date		: 2010-01-30 18:33 (2 days old)
References	: http://marc.info/?l=linux-kernel&m=126487640324942&w=4

[Bug #15200] NFS problems in 2.6.33-rc6: Unknown error 526

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15200
Subject		: NFS problems in 2.6.33-rc6: Unknown error 526
Submitter	: J.A. Magallón <jamagallon@ono.com>
Date		: 2010-01-31 22:46 (1 days old)
References	: http://marc.info/?l=linux-kernel&m=126497800408928&w=4

[Bug #15198] Radeon KMS regression

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15198
Subject		: Radeon KMS regression
Submitter	: Kevin Winchester <kjwinchester@gmail.com>
Date		: 2010-01-30 17:18 (2 days old)
First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=42590a75019a50012f25a962246498dead428433
References	: http://marc.info/?l=linux-kernel&m=126487191019612&w=4
Handled-By	: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Patch		: http://patchwork.kernel.org/patch/75023/

[Bug #15199] sata_nv and no /dev files

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15199
Subject		: sata_nv and no /dev files
Submitter	: Bartłomiej Zimoń <uzi18@o2.pl>
Date		: 2010-01-31 23:45 (1 days old)
References	: http://marc.info/?l=linux-kernel&m=126498153112488&w=4

[Bug #15202] lockdep warning during elevator_switch

[Rafael J. Wysocki]

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

The following bug entry is on the current list of known regressions
from 2.6.32.  Please verify if it still should be listed and let me know
(either way).


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15202
Subject		: lockdep warning during elevator_switch
Submitter	: Hugh Dickins <hugh.dickins-IWqWACnzNjwqdlJmJB21zg@public.gmane.org>
Date		: 2010-01-31 23:55 (1 days old)
References	: http://marc.info/?l=linux-kernel&m=126498212613051&w=4

Re: [Bug #15125] hung task - jbd2/dm-1-8 (during raid rebuild)

[Michael Breuer]

On 1/31/2010 7:22 PM, Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
>
> The following bug entry is on the current list of known regressions
> from 2.6.32.  Please verify if it still should be listed and let me know
> (either way).
>
>
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15125
> Subject		: hung task - jbd2/dm-1-8 (during raid rebuild)
> Submitter	: Michael Breuer<mbreuer-P//MSfjsEjDQT0dZR+AlfA@public.gmane.org>
> Date		: 2010-01-10 21:47 (22 days old)
> References	: http://marc.info/?l=linux-kernel&m=126316012025978&w=4
>
>    
Yup. Hit it again on 2.6.33-rc5.

Re: [Bug #14791] Something has been broken in the network stack this week

[Ben Hutchings]

[-- Attachment #1: Type: text/plain, Size: 949 bytes --]

On Mon, 2010-02-01 at 01:19 +0100, Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
> 
> The following bug entry is on the current list of known regressions
> from 2.6.32.  Please verify if it still should be listed and let me know
> (either way).
> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14791
> Subject		: Something has been broken in the network stack this week
> Submitter	: Delete This Account <speedyboyinovator-PkbjNfxxIARBDgjK7y7TUQ@public.gmane.org>
> Date		: 2009-12-12 13:06 (51 days old)
> Handled-By	: Ben Hutchings <ben-/+tVBieCtBitmTQ+vhA3Yw@public.gmane.org>
> Patch		: http://patchwork.kernel.org/patch/72073/

Dave has accepted the patch but hasn't pushed it out yet.  I expect that
it will be in 2.6.33-rc7.

Ben.

-- 
Ben Hutchings
Unix is many things to many people,
but it's never been everything to anybody.

[-- Attachment #2: This is a digitally signed message part --]
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Re: [Bug #15144] HDA Intel Audio hang on boot

[Sid Boyce]

On 01/02/10 00:22, Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
> 
> The following bug entry is on the current list of known regressions
> from 2.6.32.  Please verify if it still should be listed and let me know
> (either way).
> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15144
> Subject		: HDA Intel Audio hang on boot
> Submitter	: Sid Boyce <sboyce@blueyonder.co.uk>
> Date		: 2010-01-15 1:24 (17 days old)
> References	: http://marc.info/?l=linux-kernel&m=126351866722507&w=4
> 
> 
> 

Still not fixed in 2.6.33-rc6. Takashi wrote that the fix was scheduled
for 2.6.33-rc6, but it did not appear. I have gone back to using the
workaround with 2.6.33-rc6.
Regards
Sid.
-- 
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks

Re: [Bug #15196] kmem_cache_create: duplicate cache ccid2_h

[Xiaotian Feng]

On Mon, Feb 1, 2010 at 8:22 AM, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
>
> The following bug entry is on the current list of known regressions
> from 2.6.32.  Please verify if it still should be listed and let me know
> (either way).
>
>
> Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=15196
> Subject         : kmem_cache_create: duplicate cache ccid2_h
> Submitter       : Heinz Diehl <htd-HjJ2MNWy62to6+H+lsi3Gti2O/JbrIOy@public.gmane.org>
> Date            : 2010-01-30 18:33 (2 days old)
> References      : http://marc.info/?l=linux-kernel&m=126487640324942&w=4

Cced Neil,

I think this one is introduced by commit
de4ef86cfce60d2250111f34f8a084e769f23b16,
passing char *slab_name_fmt as function parameter, but vsnprintf is
using sizeof(slab_name_fmt),
which is 8 (or 4 in 32bit kernel) instead of 32 as old version.

Does following patch resolve this bug, Heinz?

diff --git a/net/dccp/ccid.c b/net/dccp/ccid.c
index 57dfb9c..6e52879 100644
--- a/net/dccp/ccid.c
+++ b/net/dccp/ccid.c
@@ -77,13 +77,14 @@ int ccid_getsockopt_builtin_ccids(struct sock *sk, int len,
        return err;
 }

-static struct kmem_cache *ccid_kmem_cache_create(int obj_size, char
*slab_name_fmt, const char *fmt,...)
+static struct kmem_cache *ccid_kmem_cache_create(int obj_size, char
*slab_name_fmt,
+                                                int length,const char *fmt,...)
 {
        struct kmem_cache *slab;
        va_list args;

        va_start(args, fmt);
-       vsnprintf(slab_name_fmt, sizeof(slab_name_fmt), fmt, args);
+       vsnprintf(slab_name_fmt, length, fmt, args);
        va_end(args);

        slab = kmem_cache_create(slab_name_fmt, sizeof(struct ccid) +
obj_size, 0,
@@ -104,6 +105,7 @@ static int ccid_activate(struct ccid_operations *ccid_ops)
        ccid_ops->ccid_hc_rx_slab =
                        ccid_kmem_cache_create(ccid_ops->ccid_hc_rx_obj_size,
                                               ccid_ops->ccid_hc_rx_slab_name,
+
sizeof(ccid_ops->ccid_hc_rx_slab_name),
                                               "ccid%u_hc_rx_sock",
                                               ccid_ops->ccid_id);
        if (ccid_ops->ccid_hc_rx_slab == NULL)
@@ -112,6 +114,7 @@ static int ccid_activate(struct ccid_operations *ccid_ops)
        ccid_ops->ccid_hc_tx_slab =
                        ccid_kmem_cache_create(ccid_ops->ccid_hc_tx_obj_size,
                                               ccid_ops->ccid_hc_tx_slab_name,
+
sizeof(ccid_ops->ccid_hc_tx_slab_name),
                                               "ccid%u_hc_tx_sock",
                                               ccid_ops->ccid_id);
        if (ccid_ops->ccid_hc_tx_slab == NULL)

>
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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> Please read the FAQ at  http://www.tux.org/lkml/
>

Re: [Bug #15124] PCI host bridge windows ignored (works with pci=use_crs)

[Yinghai Lu]

On 01/31/2010 04:22 PM, Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
> 
> The following bug entry is on the current list of known regressions
> from 2.6.32.  Please verify if it still should be listed and let me know
> (either way).
> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15124
> Subject		: PCI host bridge windows ignored (works with pci=use_crs)
> Submitter	: Jeff Garrett <jeff-184d8XiO+QJg9hUCZPvPmw@public.gmane.org>
> Date		: 2010-01-13 5:37 (19 days old)
> References	: http://marc.info/?l=linux-kernel&m=126336296600307&w=4
> Handled-By	: Yinghai Lu <yinghai-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
> 		  Bjorn Helgaas <bjorn.helgaas-VXdhtT5mjnY@public.gmane.org>
> 

should be closed.

YH

Re: [Bug #15144] HDA Intel Audio hang on boot

[Takashi Iwai]

At Mon, 01 Feb 2010 02:01:21 +0000,
Sid Boyce wrote:
> 
> On 01/02/10 00:22, Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> > 
> > The following bug entry is on the current list of known regressions
> > from 2.6.32.  Please verify if it still should be listed and let me know
> > (either way).
> > 
> > 
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15144
> > Subject		: HDA Intel Audio hang on boot
> > Submitter	: Sid Boyce <sboyce-QgLWrMLu8clzjhtm8Ag3mw@public.gmane.org>
> > Date		: 2010-01-15 1:24 (17 days old)
> > References	: http://marc.info/?l=linux-kernel&m=126351866722507&w=4
> > 
> > 
> > 
> 
> Still not fixed in 2.6.33-rc6. Takashi wrote that the fix was scheduled
> for 2.6.33-rc6, but it did not appear.

It just slipped from rc6 due to my busy load.
The pull request was sent yesterday.


Takashi

Re: [Bug #15076] System panic under load with clockevents_program_event

[okias]

Still valid. But reproduction without HIGHMEM is minimal, but still annoying.

2010/2/1, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org>:
> This message has been generated automatically as a part of a report
> of recent regressions.
>
> The following bug entry is on the current list of known regressions
> from 2.6.32.  Please verify if it still should be listed and let me know
> (either way).
>
>
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15076
> Subject		: System panic under load with clockevents_program_event
> Submitter	: okias <d.okias-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> Date		: 2010-01-17 13:03 (15 days old)
>
>
>


-- 
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Re: [Bug #15196] kmem_cache_create: duplicate cache ccid2_h

[David Miller]

From: Xiaotian Feng <xtfeng-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Date: Mon, 1 Feb 2010 11:30:02 +0800

> On Mon, Feb 1, 2010 at 8:22 AM, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
>> This message has been generated automatically as a part of a report
>> of recent regressions.
>>
>> The following bug entry is on the current list of known regressions
>> from 2.6.32.  Please verify if it still should be listed and let me know
>> (either way).
>>
>>
>> Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=15196
>> Subject         : kmem_cache_create: duplicate cache ccid2_h
>> Submitter       : Heinz Diehl <htd-HjJ2MNWy62to6+H+lsi3Gti2O/JbrIOy@public.gmane.org>
>> Date            : 2010-01-30 18:33 (2 days old)
>> References      : http://marc.info/?l=linux-kernel&m=126487640324942&w=4
> 
> Cced Neil,
> 
> I think this one is introduced by commit
> de4ef86cfce60d2250111f34f8a084e769f23b16,
> passing char *slab_name_fmt as function parameter, but vsnprintf is
> using sizeof(slab_name_fmt),
> which is 8 (or 4 in 32bit kernel) instead of 32 as old version.
> 
> Does following patch resolve this bug, Heinz?

There seems to be even more to this than that.  Neils
patch seems to need completely reverting.

See the patch set posted by Gerrit Renker:

http://marc.info/?l=linux-netdev&m=126500585823775&w=2
http://marc.info/?l=linux-netdev&m=126500591923880&w=2

Re: [Bug #14950] tbench regression with 2.6.33-rc1

[Mike Galbraith]

On Mon, 2010-02-01 at 01:22 +0100, Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
> 
> The following bug entry is on the current list of known regressions
> from 2.6.32.  Please verify if it still should be listed and let me know
> (either way).

Yes, it should remain open.  Looking for places to trim overhead without
injuring other things.  The regression is a moving target on my HW.

	-Mike

Re: [Bug #15192] netperf ~50% regression with 2.6.33-rc1, bisect to 1b9508f

[Mike Galbraith]

On Mon, 2010-02-01 at 01:22 +0100, Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
> 
> The following bug entry is on the current list of known regressions
> from 2.6.32.  Please verify if it still should be listed and let me know
> (either way).

Yes, it should remain open.  We're currently waiting for some data from
Lin Ming.  The regression itself isn't making much sense.. a kernel with
NEWIDLE disabled should show the same performance, but does not.  

	-Mike

Re: [Bug #15196] kmem_cache_create: duplicate cache ccid2_h

[Neil Horman]

On Sun, Jan 31, 2010 at 11:20:50PM -0800, David Miller wrote:
> From: Xiaotian Feng <xtfeng@gmail.com>
> Date: Mon, 1 Feb 2010 11:30:02 +0800
> 
> > On Mon, Feb 1, 2010 at 8:22 AM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> >> This message has been generated automatically as a part of a report
> >> of recent regressions.
> >>
> >> The following bug entry is on the current list of known regressions
> >> from 2.6.32.  Please verify if it still should be listed and let me know
> >> (either way).
> >>
> >>
> >> Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=15196
> >> Subject         : kmem_cache_create: duplicate cache ccid2_h
> >> Submitter       : Heinz Diehl <htd@fancy-poultry.org>
> >> Date            : 2010-01-30 18:33 (2 days old)
> >> References      : http://marc.info/?l=linux-kernel&m=126487640324942&w=4
> > 
> > Cced Neil,
> > 
> > I think this one is introduced by commit
> > de4ef86cfce60d2250111f34f8a084e769f23b16,
> > passing char *slab_name_fmt as function parameter, but vsnprintf is
> > using sizeof(slab_name_fmt),
> > which is 8 (or 4 in 32bit kernel) instead of 32 as old version.
> > 
> > Does following patch resolve this bug, Heinz?
> 
> There seems to be even more to this than that.  Neils
> patch seems to need completely reverting.
> 
> See the patch set posted by Gerrit Renker:
> 
> http://marc.info/?l=linux-netdev&m=126500585823775&w=2
> http://marc.info/?l=linux-netdev&m=126500591923880&w=2
> 


Dave, some of this doesn't make the least bit of sense to me.  I get the sizeof
error, thats clear (and I apologize, I should have seen that), but Gerrits
revert of the dccp_probe changes is non-sensical.  I'm not sure I even follow
the comments:

>Previously (during about 4 years of this module's history) there had never
>been a problem with the 'silent dependency' that the commit tried to fix:
>this dependency is deliberate and required, since dccp_probe performs probing
>of dccp connections and hence needs to know about dccp internals.

He claims this dependency is deliberate and requires, to which I agree, but he
would seem to fix that by making the dccp_probe module error out in the event
that dccp wasn't loaded.  Why bother with that?
Neil

Re: [Bug #15196] kmem_cache_create: duplicate cache ccid2_h

[David Miller]

From: Neil Horman <nhorman@tuxdriver.com>
Date: Mon, 1 Feb 2010 06:55:18 -0500

> He claims this dependency is deliberate and requires, to which I agree, but he
> would seem to fix that by making the dccp_probe module error out in the event
> that dccp wasn't loaded.  Why bother with that?

Neil, please get into the thread Gerrit started so he can see your
questions and responses too.

I already chided him for not CC:'ing you in the first place, guys
stop hiding from eachother :-)

Re: [Bug #15196] kmem_cache_create: duplicate cache ccid2_h

[Neil Horman]

On Mon, Feb 01, 2010 at 04:49:11AM -0800, David Miller wrote:
> From: Neil Horman <nhorman-2XuSBdqkA4R54TAoqtyWWQ@public.gmane.org>
> Date: Mon, 1 Feb 2010 06:55:18 -0500
> 
> > He claims this dependency is deliberate and requires, to which I agree, but he
> > would seem to fix that by making the dccp_probe module error out in the event
> > that dccp wasn't loaded.  Why bother with that?
> 
> Neil, please get into the thread Gerrit started so he can see your
> questions and responses too.
> 
> I already chided him for not CC:'ing you in the first place, guys
> stop hiding from eachother :-)
> 
I already posted to both of his posts (about 45 minutes ago).  I think vger is
being slow (whoever runs that system should really tune it up ;) )

Neil

Re: [Bug #15196] kmem_cache_create: duplicate cache ccid2_h

[Heinz Diehl]

On 01.02.2010, Xiaotian Feng wrote: 

> Does following patch resolve this bug, Heinz?
[....]

The patch was completely malformed, don't know what happened on the way,
but I applied it by hand. Yes, it fixes the problem for me.

Thanks,
Heinz.

Re: [Bug #15125] hung task - jbd2/dm-1-8 (during raid rebuild)

[Michael Breuer]

On 1/31/2010 7:42 PM, Michael Breuer wrote:
> On 1/31/2010 7:22 PM, Rafael J. Wysocki wrote:
>> This message has been generated automatically as a part of a report
>> of recent regressions.
>>
>> The following bug entry is on the current list of known regressions
>> from 2.6.32.  Please verify if it still should be listed and let me know
>> (either way).
>>
>>
>> Bug-Entry    : http://bugzilla.kernel.org/show_bug.cgi?id=15125
>> Subject        : hung task - jbd2/dm-1-8 (during raid rebuild)
>> Submitter    : Michael Breuer<mbreuer@majjas.com>
>> Date        : 2010-01-10 21:47 (22 days old)
>> References    : http://marc.info/?l=linux-kernel&m=126316012025978&w=4
>>
> Yup. Hit it again on 2.6.33-rc5.
> -- 
> To unsubscribe from this list: send the line "unsubscribe 
> linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/
I was not able to recreate this in rc6.

Re: [Bug #14949] drm_vm.c:drm_mmap: possible circular locking dependency detected

[Borislav Petkov]

On Mon, Feb 1, 2010 at 1:22 AM, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
>
> The following bug entry is on the current list of known regressions
> from 2.6.32.  Please verify if it still should be listed and let me know
> (either way).
>
>
> Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=14949
> Subject         : drm_vm.c:drm_mmap: possible circular locking dependency detected
> Submitter       : Borislav Petkov <petkovbb-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org>
> Date            : 2009-12-26 9:45 (37 days old)
> References      : http://marc.info/?l=linux-kernel&m=126182073616279&w=4
> Handled-By      : Eric W. Biederman <ebiederm-BGArkANP9klv6pq1l3V1OWGXanvQGlWp@public.gmane.orgm>
> Patch           : http://patchwork.kernel.org/patch/70461/

Yes, this is fixed.

-- 
Regards/Gruss,
Boris

Re: [Bug #15198] Radeon KMS regression

[Kevin Winchester]

On Mon, 2010-02-01 at 01:22 +0100, Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
> 
> The following bug entry is on the current list of known regressions
> from 2.6.32.  Please verify if it still should be listed and let me know
> (either way).
> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15198
> Subject		: Radeon KMS regression
> Submitter	: Kevin Winchester <kjwinchester@gmail.com>
> Date		: 2010-01-30 17:18 (2 days old)
> First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=42590a75019a50012f25a962246498dead428433
> References	: http://marc.info/?l=linux-kernel&m=126487191019612&w=4
> Handled-By	: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
> Patch		: http://patchwork.kernel.org/patch/75023/
> 
> 

This is fixed by the patch from FUJITA Tomonori - I just confirmed with
my latest build of Linus' tree (which has the patch).

Thanks,

-- 
Kevin Winchester

Re: [Bug #15198] Radeon KMS regression

[Rafael J. Wysocki]

On Tuesday 02 February 2010, Kevin Winchester wrote:
> On Mon, 2010-02-01 at 01:22 +0100, Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> > 
> > The following bug entry is on the current list of known regressions
> > from 2.6.32.  Please verify if it still should be listed and let me know
> > (either way).
> > 
> > 
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15198
> > Subject		: Radeon KMS regression
> > Submitter	: Kevin Winchester <kjwinchester-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> > Date		: 2010-01-30 17:18 (2 days old)
> > First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=42590a75019a50012f25a962246498dead428433
> > References	: http://marc.info/?l=linux-kernel&m=126487191019612&w=4
> > Handled-By	: FUJITA Tomonori <fujita.tomonori-Zyj7fXuS5i5L9jVzuh4AOg@public.gmane.org>
> > Patch		: http://patchwork.kernel.org/patch/75023/
> > 
> > 
> 
> This is fixed by the patch from FUJITA Tomonori - I just confirmed with
> my latest build of Linus' tree (which has the patch).

Thanks, already closed.

Rafael

Re: [Bug #15192] netperf ~50% regression with 2.6.33-rc1, bisect to 1b9508f

[Rafael J. Wysocki]

On Monday 01 February 2010, Mike Galbraith wrote:
> On Mon, 2010-02-01 at 01:22 +0100, Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> > 
> > The following bug entry is on the current list of known regressions
> > from 2.6.32.  Please verify if it still should be listed and let me know
> > (either way).
> 
> Yes, it should remain open.  We're currently waiting for some data from
> Lin Ming.  The regression itself isn't making much sense.. a kernel with
> NEWIDLE disabled should show the same performance, but does not.  

Well, thanks for the update.

Rafael

Re: [Bug #15144] HDA Intel Audio hang on boot

[Rafael J. Wysocki]

On Monday 01 February 2010, Takashi Iwai wrote:
> At Mon, 01 Feb 2010 02:01:21 +0000,
> Sid Boyce wrote:
> > 
> > On 01/02/10 00:22, Rafael J. Wysocki wrote:
> > > This message has been generated automatically as a part of a report
> > > of recent regressions.
> > > 
> > > The following bug entry is on the current list of known regressions
> > > from 2.6.32.  Please verify if it still should be listed and let me know
> > > (either way).
> > > 
> > > 
> > > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15144
> > > Subject		: HDA Intel Audio hang on boot
> > > Submitter	: Sid Boyce <sboyce-QgLWrMLu8clzjhtm8Ag3mw@public.gmane.org>
> > > Date		: 2010-01-15 1:24 (17 days old)
> > > References	: http://marc.info/?l=linux-kernel&m=126351866722507&w=4
> > > 
> > > 
> > > 
> > 
> > Still not fixed in 2.6.33-rc6. Takashi wrote that the fix was scheduled
> > for 2.6.33-rc6, but it did not appear.
> 
> It just slipped from rc6 due to my busy load.
> The pull request was sent yesterday.

Linus has already merged it, so I've closed the bug.

Rafael

Re: [Bug #15125] hung task - jbd2/dm-1-8 (during raid rebuild)

[Rafael J. Wysocki]

On Monday 01 February 2010, Michael Breuer wrote:
> On 1/31/2010 7:42 PM, Michael Breuer wrote:
> > On 1/31/2010 7:22 PM, Rafael J. Wysocki wrote:
> >> This message has been generated automatically as a part of a report
> >> of recent regressions.
> >>
> >> The following bug entry is on the current list of known regressions
> >> from 2.6.32.  Please verify if it still should be listed and let me know
> >> (either way).
> >>
> >>
> >> Bug-Entry    : http://bugzilla.kernel.org/show_bug.cgi?id=15125
> >> Subject        : hung task - jbd2/dm-1-8 (during raid rebuild)
> >> Submitter    : Michael Breuer<mbreuer-P//MSfjsEjDQT0dZR+AlfA@public.gmane.org>
> >> Date        : 2010-01-10 21:47 (22 days old)
> >> References    : http://marc.info/?l=linux-kernel&m=126316012025978&w=4
> >>
> > Yup. Hit it again on 2.6.33-rc5.
> I was not able to recreate this in rc6.

Thanks, closed then.

Rafael

Re: [Bug #15124] PCI host bridge windows ignored (works with pci=use_crs)

[Rafael J. Wysocki]

On Monday 01 February 2010, Yinghai Lu wrote:
> On 01/31/2010 04:22 PM, Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> > 
> > The following bug entry is on the current list of known regressions
> > from 2.6.32.  Please verify if it still should be listed and let me know
> > (either way).
> > 
> > 
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15124
> > Subject		: PCI host bridge windows ignored (works with pci=use_crs)
> > Submitter	: Jeff Garrett <jeff@jgarrett.org>
> > Date		: 2010-01-13 5:37 (19 days old)
> > References	: http://marc.info/?l=linux-kernel&m=126336296600307&w=4
> > Handled-By	: Yinghai Lu <yinghai@kernel.org>
> > 		  Bjorn Helgaas <bjorn.helgaas@hp.com>
> > 
> 
> should be closed.

Is there a fix in the Linus' tree?

Rafael

Re: [Bug #15076] System panic under load with clockevents_program_event

[Rafael J. Wysocki]

On Monday 01 February 2010, okias wrote:
> Still valid. But reproduction without HIGHMEM is minimal, but still annoying.

Thanks for the update.

Rafael

Re: [Bug #14950] tbench regression with 2.6.33-rc1

[Rafael J. Wysocki]

On Monday 01 February 2010, Mike Galbraith wrote:
> On Mon, 2010-02-01 at 01:22 +0100, Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> > 
> > The following bug entry is on the current list of known regressions
> > from 2.6.32.  Please verify if it still should be listed and let me know
> > (either way).
> 
> Yes, it should remain open.  Looking for places to trim overhead without
> injuring other things.  The regression is a moving target on my HW.

Thanks for the update.

Rafael

Re: [Bug #14949] drm_vm.c:drm_mmap: possible circular locking dependency detected

[Rafael J. Wysocki]

On Monday 01 February 2010, Borislav Petkov wrote:
> On Mon, Feb 1, 2010 at 1:22 AM, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> >
> > The following bug entry is on the current list of known regressions
> > from 2.6.32.  Please verify if it still should be listed and let me know
> > (either way).
> >
> >
> > Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=14949
> > Subject         : drm_vm.c:drm_mmap: possible circular locking dependency detected
> > Submitter       : Borislav Petkov <petkovbb-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org>
> > Date            : 2009-12-26 9:45 (37 days old)
> > References      : http://marc.info/?l=linux-kernel&m=126182073616279&w=4
> > Handled-By      : Eric W. Biederman <ebiederm-BGArkANP9klv6pq1l3V1OdBPR1lH4CV8@public.gmane.org>
> > Patch           : http://patchwork.kernel.org/patch/70461/
> 
> Yes, this is fixed.

Do you mean "fixed" as "the fix is in the Linus' tree" or "fixed" as "the
patch fixed it for me"?

Rafael

Re: [Bug #15124] PCI host bridge windows ignored (works with pci=use_crs)

[Jeff Garrett]

On Tue, Feb 02, 2010 at 09:42:58PM +0100, Rafael J. Wysocki wrote:
> On Monday 01 February 2010, Yinghai Lu wrote:
> > On 01/31/2010 04:22 PM, Rafael J. Wysocki wrote:
> > > This message has been generated automatically as a part of a report
> > > of recent regressions.
> > > 
> > > The following bug entry is on the current list of known regressions
> > > from 2.6.32.  Please verify if it still should be listed and let me know
> > > (either way).
> > > 
> > > 
> > > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15124
> > > Subject		: PCI host bridge windows ignored (works with pci=use_crs)
> > > Submitter	: Jeff Garrett <jeff@jgarrett.org>
> > > Date		: 2010-01-13 5:37 (19 days old)
> > > References	: http://marc.info/?l=linux-kernel&m=126336296600307&w=4
> > > Handled-By	: Yinghai Lu <yinghai@kernel.org>
> > > 		  Bjorn Helgaas <bjorn.helgaas@hp.com>
> > > 
> > 
> > should be closed.
> 
> Is there a fix in the Linus' tree?
> 
> Rafael

Yes, it is fixed by commit e8e06eae4ffd683931b928f460c11c40cd3f7fd8

-Jeff

Re: [Bug #15124] PCI host bridge windows ignored (works with pci=use_crs)

[Bjorn Helgaas]

On Tuesday 02 February 2010 01:42:58 pm Rafael J. Wysocki wrote:
> On Monday 01 February 2010, Yinghai Lu wrote:
> > On 01/31/2010 04:22 PM, Rafael J. Wysocki wrote:
> > > This message has been generated automatically as a part of a report
> > > of recent regressions.
> > > 
> > > The following bug entry is on the current list of known regressions
> > > from 2.6.32.  Please verify if it still should be listed and let me know
> > > (either way).
> > > 
> > > 
> > > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15124
> > > Subject		: PCI host bridge windows ignored (works with pci=use_crs)
> > > Submitter	: Jeff Garrett <jeff@jgarrett.org>
> > > Date		: 2010-01-13 5:37 (19 days old)
> > > References	: http://marc.info/?l=linux-kernel&m=126336296600307&w=4
> > > Handled-By	: Yinghai Lu <yinghai@kernel.org>
> > > 		  Bjorn Helgaas <bjorn.helgaas@hp.com>
> > > 
> > 
> > should be closed.
> 
> Is there a fix in the Linus' tree?

Yes.  The regression was caused by the addition of arch/x86/pci/intel_bus.c.

Jeff's patch: http://lkml.org/lkml/2010/1/27/449 is in Linus' tree as
commit e8e06eae4ffd68, and Jeff confirmed that it works for him.

Bjorn

Re: [Bug #14949] drm_vm.c:drm_mmap: possible circular locking dependency detected

[Borislav Petkov]

(Adding Greg to Cc:)

On Tue, Feb 02, 2010 at 09:46:45PM +0100, Rafael J. Wysocki wrote:
> On Monday 01 February 2010, Borislav Petkov wrote:
> > On Mon, Feb 1, 2010 at 1:22 AM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> > > This message has been generated automatically as a part of a report
> > > of recent regressions.
> > >
> > > The following bug entry is on the current list of known regressions
> > > from 2.6.32.  Please verify if it still should be listed and let me know
> > > (either way).
> > >
> > >
> > > Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=14949
> > > Subject         : drm_vm.c:drm_mmap: possible circular locking dependency detected
> > > Submitter       : Borislav Petkov <petkovbb@googlemail.com>
> > > Date            : 2009-12-26 9:45 (37 days old)
> > > References      : http://marc.info/?l=linux-kernel&m=126182073616279&w=4
> > > Handled-By      : Eric W. Biederman <ebiederm@aristanetworks.com>
> > > Patch           : http://patchwork.kernel.org/patch/70461/
> > 
> > Yes, this is fixed.
> 
> Do you mean "fixed" as "the fix is in the Linus' tree" or "fixed" as "the
> patch fixed it for me"?

Rather the second one, i.e. it fixes it for me. The patch is named

sysfs-cache-the-last-sysfs_dirent-to-improve-readdir-scalability-v2.patch

and is "stuck" in Greg's tree. Judging by the quilt series¹, the patch
is slated for submission after 2.6.33. This late in the game for .32,
I'm guessing maybe a stable backport after .33 is out?

[1] http://www.kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/patches/series

-- 
Regards/Gruss,
    Boris.

Re: [Bug #14949] drm_vm.c:drm_mmap: possible circular locking dependency detected

[Rafael J. Wysocki]

On Tuesday 02 February 2010, Borislav Petkov wrote:
> (Adding Greg to Cc:)
> 
> On Tue, Feb 02, 2010 at 09:46:45PM +0100, Rafael J. Wysocki wrote:
> > On Monday 01 February 2010, Borislav Petkov wrote:
> > > On Mon, Feb 1, 2010 at 1:22 AM, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> > > > This message has been generated automatically as a part of a report
> > > > of recent regressions.
> > > >
> > > > The following bug entry is on the current list of known regressions
> > > > from 2.6.32.  Please verify if it still should be listed and let me know
> > > > (either way).
> > > >
> > > >
> > > > Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=14949
> > > > Subject         : drm_vm.c:drm_mmap: possible circular locking dependency detected
> > > > Submitter       : Borislav Petkov <petkovbb-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org>
> > > > Date            : 2009-12-26 9:45 (37 days old)
> > > > References      : http://marc.info/?l=linux-kernel&m=126182073616279&w=4
> > > > Handled-By      : Eric W. Biederman <ebiederm-BGArkANP9klv6pq1l3V1OWGXanvQGlWp@public.gmane.orgm>
> > > > Patch           : http://patchwork.kernel.org/patch/70461/
> > > 
> > > Yes, this is fixed.
> > 
> > Do you mean "fixed" as "the fix is in the Linus' tree" or "fixed" as "the
> > patch fixed it for me"?
> 
> Rather the second one, i.e. it fixes it for me. The patch is named
> 
> sysfs-cache-the-last-sysfs_dirent-to-improve-readdir-scalability-v2.patch
> 
> and is "stuck" in Greg's tree. Judging by the quilt series¹, the patch
> is slated for submission after 2.6.33. This late in the game for .32,
> I'm guessing maybe a stable backport after .33 is out?

I guess so.  Thanks!

Rafael

Re: [Bug #15124] PCI host bridge windows ignored (works with pci=use_crs)

[Rafael J. Wysocki]

On Tuesday 02 February 2010, Jeff Garrett wrote:
> On Tue, Feb 02, 2010 at 09:42:58PM +0100, Rafael J. Wysocki wrote:
> > On Monday 01 February 2010, Yinghai Lu wrote:
> > > On 01/31/2010 04:22 PM, Rafael J. Wysocki wrote:
> > > > This message has been generated automatically as a part of a report
> > > > of recent regressions.
> > > > 
> > > > The following bug entry is on the current list of known regressions
> > > > from 2.6.32.  Please verify if it still should be listed and let me know
> > > > (either way).
> > > > 
> > > > 
> > > > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15124
> > > > Subject		: PCI host bridge windows ignored (works with pci=use_crs)
> > > > Submitter	: Jeff Garrett <jeff-184d8XiO+QJg9hUCZPvPmw@public.gmane.org>
> > > > Date		: 2010-01-13 5:37 (19 days old)
> > > > References	: http://marc.info/?l=linux-kernel&m=126336296600307&w=4
> > > > Handled-By	: Yinghai Lu <yinghai-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
> > > > 		  Bjorn Helgaas <bjorn.helgaas-VXdhtT5mjnY@public.gmane.org>
> > > > 
> > > 
> > > should be closed.
> > 
> > Is there a fix in the Linus' tree?
> > 
> > Rafael
> 
> Yes, it is fixed by commit e8e06eae4ffd683931b928f460c11c40cd3f7fd8

Thanks, closing.

Rafael

Re: [Bug #15124] PCI host bridge windows ignored (works with pci=use_crs)

[Rafael J. Wysocki]

On Tuesday 02 February 2010, Bjorn Helgaas wrote:
> On Tuesday 02 February 2010 01:42:58 pm Rafael J. Wysocki wrote:
> > On Monday 01 February 2010, Yinghai Lu wrote:
> > > On 01/31/2010 04:22 PM, Rafael J. Wysocki wrote:
> > > > This message has been generated automatically as a part of a report
> > > > of recent regressions.
> > > > 
> > > > The following bug entry is on the current list of known regressions
> > > > from 2.6.32.  Please verify if it still should be listed and let me know
> > > > (either way).
> > > > 
> > > > 
> > > > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15124
> > > > Subject		: PCI host bridge windows ignored (works with pci=use_crs)
> > > > Submitter	: Jeff Garrett <jeff@jgarrett.org>
> > > > Date		: 2010-01-13 5:37 (19 days old)
> > > > References	: http://marc.info/?l=linux-kernel&m=126336296600307&w=4
> > > > Handled-By	: Yinghai Lu <yinghai@kernel.org>
> > > > 		  Bjorn Helgaas <bjorn.helgaas@hp.com>
> > > > 
> > > 
> > > should be closed.
> > 
> > Is there a fix in the Linus' tree?
> 
> Yes.  The regression was caused by the addition of arch/x86/pci/intel_bus.c.
> 
> Jeff's patch: http://lkml.org/lkml/2010/1/27/449 is in Linus' tree as
> commit e8e06eae4ffd68, and Jeff confirmed that it works for him.

Thanks, closed.

Rafael

Re: [Bug #14949] drm_vm.c:drm_mmap: possible circular locking dependency detected

[Greg KH]

On Tue, Feb 02, 2010 at 09:58:57PM +0100, Borislav Petkov wrote:
> (Adding Greg to Cc:)
> 
> On Tue, Feb 02, 2010 at 09:46:45PM +0100, Rafael J. Wysocki wrote:
> > On Monday 01 February 2010, Borislav Petkov wrote:
> > > On Mon, Feb 1, 2010 at 1:22 AM, Rafael J. Wysocki <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> > > > This message has been generated automatically as a part of a report
> > > > of recent regressions.
> > > >
> > > > The following bug entry is on the current list of known regressions
> > > > from 2.6.32.  Please verify if it still should be listed and let me know
> > > > (either way).
> > > >
> > > >
> > > > Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=14949
> > > > Subject         : drm_vm.c:drm_mmap: possible circular locking dependency detected
> > > > Submitter       : Borislav Petkov <petkovbb-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org>
> > > > Date            : 2009-12-26 9:45 (37 days old)
> > > > References      : http://marc.info/?l=linux-kernel&m=126182073616279&w=4
> > > > Handled-By      : Eric W. Biederman <ebiederm-BGArkANP9klv6pq1l3V1OdBPR1lH4CV8@public.gmane.org>
> > > > Patch           : http://patchwork.kernel.org/patch/70461/
> > > 
> > > Yes, this is fixed.
> > 
> > Do you mean "fixed" as "the fix is in the Linus' tree" or "fixed" as "the
> > patch fixed it for me"?
> 
> Rather the second one, i.e. it fixes it for me. The patch is named
> 
> sysfs-cache-the-last-sysfs_dirent-to-improve-readdir-scalability-v2.patch
> 
> and is "stuck" in Greg's tree. Judging by the quilt series??, the patch
> is slated for submission after 2.6.33. This late in the game for .32,
> I'm guessing maybe a stable backport after .33 is out?
> 
> [1] http://www.kernel.org/pub/linux/kernel/people/gregkh/gregkh-2.6/patches/series

I'll mark it for stable, I'd prefer to wait for .33 to come out before
sending it in.

thanks,

greg k-h

Re: [Bug #15144] HDA Intel Audio hang on boot

[Sid Boyce]

On 02/02/10 20:40, Rafael J. Wysocki wrote:
> On Monday 01 February 2010, Takashi Iwai wrote:
>> At Mon, 01 Feb 2010 02:01:21 +0000,
>> Sid Boyce wrote:
>>>
>>> On 01/02/10 00:22, Rafael J. Wysocki wrote:
>>>> This message has been generated automatically as a part of a report
>>>> of recent regressions.
>>>>
>>>> The following bug entry is on the current list of known regressions
>>>> from 2.6.32.  Please verify if it still should be listed and let me know
>>>> (either way).
>>>>
>>>>
>>>> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15144
>>>> Subject		: HDA Intel Audio hang on boot
>>>> Submitter	: Sid Boyce <sboyce-QgLWrMLu8clzjhtm8Ag3mw@public.gmane.org>
>>>> Date		: 2010-01-15 1:24 (17 days old)
>>>> References	: http://marc.info/?l=linux-kernel&m=126351866722507&w=4
>>>>
>>>>
>>>>
>>>
>>> Still not fixed in 2.6.33-rc6. Takashi wrote that the fix was scheduled
>>> for 2.6.33-rc6, but it did not appear.
>>
>> It just slipped from rc6 due to my busy load.
>> The pull request was sent yesterday.
> 
> Linus has already merged it, so I've closed the bug.
> 
> Rafael
> 

I added the line to hda_intel.c in 2.6.33-rc6 as I had oopses in
2.6.33-rc6-git1 that I haven't yet captured.
SND_PCI_QUIRK(0x1043, 0x829c, "ASUS", 0), /* nvidia */
The problem was still there. I shall have a further look later today.
Regards
Sid.
-- 
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks

Re: [Bug #15043] Display goes off with i915.powersave=1 after suspend-resume

[Soeren Sonnenburg]

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On Mon, 2010-02-01 at 01:22 +0100, Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
> 
> The following bug entry is on the current list of known regressions
> from 2.6.32.  Please verify if it still should be listed and let me know
> (either way).
> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15043
> Subject		: Display goes off with i915.powersave=1 after suspend-resume
> Submitter	: Soeren Sonnenburg <sonne@debian.org>
> Date		: 2010-01-10 20:09 (22 days old)
> References	: http://marc.info/?l=linux-kernel&m=126315457519505&w=4

yes still exists in current git.

Soeren
-- 
For the one fact about the future of which we can be certain is that it
will be utterly fantastic. -- Arthur C. Clarke, 1962

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Re: [Bug #15043] Display goes off with i915.powersave=1 after suspend-resume

[Rafael J. Wysocki]

On Thursday 04 February 2010, Soeren Sonnenburg wrote:
> On Mon, 2010-02-01 at 01:22 +0100, Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> > 
> > The following bug entry is on the current list of known regressions
> > from 2.6.32.  Please verify if it still should be listed and let me know
> > (either way).
> > 
> > 
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15043
> > Subject		: Display goes off with i915.powersave=1 after suspend-resume
> > Submitter	: Soeren Sonnenburg <sonne-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org>
> > Date		: 2010-01-10 20:09 (22 days old)
> > References	: http://marc.info/?l=linux-kernel&m=126315457519505&w=4
> 
> yes still exists in current git.

Thanks for the update.

Rafael

Re: [Bug #15043] Display goes off with i915.powersave=1 after suspend-resume

[Jesse Barnes]

On Thu, 4 Feb 2010 21:42:02 +0100
"Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org> wrote:

> On Thursday 04 February 2010, Soeren Sonnenburg wrote:
> > On Mon, 2010-02-01 at 01:22 +0100, Rafael J. Wysocki wrote:
> > > This message has been generated automatically as a part of a
> > > report of recent regressions.
> > > 
> > > The following bug entry is on the current list of known
> > > regressions from 2.6.32.  Please verify if it still should be
> > > listed and let me know (either way).
> > > 
> > > 
> > > Bug-Entry	:
> > > http://bugzilla.kernel.org/show_bug.cgi?id=15043
> > > Subject		: Display goes off with i915.powersave=1
> > > after suspend-resume Submitter	: Soeren Sonnenburg
> > > <sonne-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org> Date		: 2010-01-10 20:09 (22
> > > days old) References	:
> > > http://marc.info/?l=linux-kernel&m=126315457519505&w=4
> > 
> > yes still exists in current git.
> 
> Thanks for the update.

Just updated the corresponding FDO bug
(https://bugs.freedesktop.org/show_bug.cgi?id=24314).  There are some
hw bugs related to FBC handling on 945GM though, so we may have to
disable it on some machines.

-- 
Jesse Barnes, Intel Open Source Technology Center

Re: [Bug #15043] Display goes off with i915.powersave=1 after suspend-resume

[Soeren Sonnenburg]

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On Fri, 2010-02-05 at 11:29 -0800, Jesse Barnes wrote:
> On Thu, 4 Feb 2010 21:42:02 +0100
> "Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> 
> > On Thursday 04 February 2010, Soeren Sonnenburg wrote:
> > > On Mon, 2010-02-01 at 01:22 +0100, Rafael J. Wysocki wrote:
> > > > This message has been generated automatically as a part of a
> > > > report of recent regressions.
> > > > 
> > > > The following bug entry is on the current list of known
> > > > regressions from 2.6.32.  Please verify if it still should be
> > > > listed and let me know (either way).
> > > > 
> > > > 
> > > > Bug-Entry	:
> > > > http://bugzilla.kernel.org/show_bug.cgi?id=15043
> > > > Subject		: Display goes off with i915.powersave=1
> > > > after suspend-resume Submitter	: Soeren Sonnenburg
> > > > <sonne-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org> Date		: 2010-01-10 20:09 (22
> > > > days old) References	:
> > > > http://marc.info/?l=linux-kernel&m=126315457519505&w=4
> > > 
> > > yes still exists in current git.
> > 
> > Thanks for the update.
> 
> Just updated the corresponding FDO bug
> (https://bugs.freedesktop.org/show_bug.cgi?id=24314).  There are some
> hw bugs related to FBC handling on 945GM though, so we may have to
> disable it on some machines.

FYI: With the patch from #14897 it was working for the last day and a
half at least...

Soeren
-- 
For the one fact about the future of which we can be certain is that it
will be utterly fantastic. -- Arthur C. Clarke, 1962

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Re: [Bug #15043] Display goes off with i915.powersave=1 after suspend-resume

[Soeren Sonnenburg]

[-- Attachment #1: Type: text/plain, Size: 1793 bytes --]

On Sat, 2010-02-06 at 06:11 +0100, Soeren Sonnenburg wrote:
> On Fri, 2010-02-05 at 11:29 -0800, Jesse Barnes wrote:
> > On Thu, 4 Feb 2010 21:42:02 +0100
> > "Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org> wrote:
> > 
> > > On Thursday 04 February 2010, Soeren Sonnenburg wrote:
> > > > On Mon, 2010-02-01 at 01:22 +0100, Rafael J. Wysocki wrote:
> > > > > This message has been generated automatically as a part of a
> > > > > report of recent regressions.
> > > > > 
> > > > > The following bug entry is on the current list of known
> > > > > regressions from 2.6.32.  Please verify if it still should be
> > > > > listed and let me know (either way).
> > > > > 
> > > > > 
> > > > > Bug-Entry	:
> > > > > http://bugzilla.kernel.org/show_bug.cgi?id=15043
> > > > > Subject		: Display goes off with i915.powersave=1
> > > > > after suspend-resume Submitter	: Soeren Sonnenburg
> > > > > <sonne-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org> Date		: 2010-01-10 20:09 (22
> > > > > days old) References	:
> > > > > http://marc.info/?l=linux-kernel&m=126315457519505&w=4
> > > > 
> > > > yes still exists in current git.
> > > 
> > > Thanks for the update.
> > 
> > Just updated the corresponding FDO bug
> > (https://bugs.freedesktop.org/show_bug.cgi?id=24314).  There are some
> > hw bugs related to FBC handling on 945GM though, so we may have to
> > disable it on some machines.
> 
> FYI: With the patch from #14897 it was working for the last day and a
> half at least...

Just after I wrote that email it was happening again. So I take that
back. Flickering and display -> off just happened with that patch.

Soeren
-- 
For the one fact about the future of which we can be certain is that it
will be utterly fantastic. -- Arthur C. Clarke, 1962

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Re: [Bug #15196] kmem_cache_create: duplicate cache ccid2_h

[Heinz Diehl]

On 01.02.2010, Heinz Diehl wrote: 

[....]

Quoting myself here...

> The patch was completely malformed, don't know what happened on the way,
> but I applied it by hand. Yes, it fixes the problem for me.

Xiaotiangs patch quoted in the thread listed here (coming via kernel.org's
bugtracker)

 http://patchwork.kernel.org/patch/76023/
 
is missing some lines, and the patch attached at the end of the
thread is incomplete and malformed, as reported earlier. I guess this is
how it should have looked like (please correct me if I'm wrong):


--- /a/ccid.c	2010-02-06 23:17:12.000000000 +0100
+++ /b/ccid.c	2010-02-07 09:50:40.000000000 +0100
@@ -77,13 +77,13 @@
 	return err;
 }
 
-static struct kmem_cache *ccid_kmem_cache_create(int obj_size, char *slab_name_fmt, const char *fmt,...)
+static struct kmem_cache *ccid_kmem_cache_create(int obj_size, char *slab_name_fmt, int length, const char *fmt,...)
 {
 	struct kmem_cache *slab;
 	va_list args;
 
 	va_start(args, fmt);
-	vsnprintf(slab_name_fmt, sizeof(slab_name_fmt), fmt, args);
+	vsnprintf(slab_name_fmt, length, fmt, args);
 	va_end(args);
 
 	slab = kmem_cache_create(slab_name_fmt, sizeof(struct ccid) + obj_size, 0,
@@ -104,6 +104,7 @@
 	ccid_ops->ccid_hc_rx_slab =
 			ccid_kmem_cache_create(ccid_ops->ccid_hc_rx_obj_size,
 					       ccid_ops->ccid_hc_rx_slab_name,
+					       sizeof(ccid_ops->ccid_hc_rx_slab_name),
 					       "ccid%u_hc_rx_sock",
 					       ccid_ops->ccid_id);
 	if (ccid_ops->ccid_hc_rx_slab == NULL)
@@ -112,6 +113,7 @@
 	ccid_ops->ccid_hc_tx_slab =
 			ccid_kmem_cache_create(ccid_ops->ccid_hc_tx_obj_size,
 					       ccid_ops->ccid_hc_tx_slab_name,
+					       sizeof(ccid_ops->ccid_hc_tx_slab_name),
 					       "ccid%u_hc_tx_sock",
 					       ccid_ops->ccid_id);
 	if (ccid_ops->ccid_hc_tx_slab == NULL)

Re: [Bug #15196] kmem_cache_create: duplicate cache ccid2_h

[Rafael J. Wysocki]

On Sunday 07 February 2010, Heinz Diehl wrote:
> On 01.02.2010, Heinz Diehl wrote: 
> 
> [....]
> 
> Quoting myself here...
> 
> > The patch was completely malformed, don't know what happened on the way,
> > but I applied it by hand. Yes, it fixes the problem for me.
> 
> Xiaotiangs patch quoted in the thread listed here (coming via kernel.org's
> bugtracker)
> 
>  http://patchwork.kernel.org/patch/76023/
>  
> is missing some lines, and the patch attached at the end of the
> thread is incomplete and malformed, as reported earlier. I guess this is
> how it should have looked like (please correct me if I'm wrong):

Thanks, I updated the bug entry with a link to your patch below.

> --- /a/ccid.c	2010-02-06 23:17:12.000000000 +0100
> +++ /b/ccid.c	2010-02-07 09:50:40.000000000 +0100
> @@ -77,13 +77,13 @@
>  	return err;
>  }
>  
> -static struct kmem_cache *ccid_kmem_cache_create(int obj_size, char *slab_name_fmt, const char *fmt,...)
> +static struct kmem_cache *ccid_kmem_cache_create(int obj_size, char *slab_name_fmt, int length, const char *fmt,...)
>  {
>  	struct kmem_cache *slab;
>  	va_list args;
>  
>  	va_start(args, fmt);
> -	vsnprintf(slab_name_fmt, sizeof(slab_name_fmt), fmt, args);
> +	vsnprintf(slab_name_fmt, length, fmt, args);
>  	va_end(args);
>  
>  	slab = kmem_cache_create(slab_name_fmt, sizeof(struct ccid) + obj_size, 0,
> @@ -104,6 +104,7 @@
>  	ccid_ops->ccid_hc_rx_slab =
>  			ccid_kmem_cache_create(ccid_ops->ccid_hc_rx_obj_size,
>  					       ccid_ops->ccid_hc_rx_slab_name,
> +					       sizeof(ccid_ops->ccid_hc_rx_slab_name),
>  					       "ccid%u_hc_rx_sock",
>  					       ccid_ops->ccid_id);
>  	if (ccid_ops->ccid_hc_rx_slab == NULL)
> @@ -112,6 +113,7 @@
>  	ccid_ops->ccid_hc_tx_slab =
>  			ccid_kmem_cache_create(ccid_ops->ccid_hc_tx_obj_size,
>  					       ccid_ops->ccid_hc_tx_slab_name,
> +					       sizeof(ccid_ops->ccid_hc_tx_slab_name),
>  					       "ccid%u_hc_tx_sock",
>  					       ccid_ops->ccid_id);
>  	if (ccid_ops->ccid_hc_tx_slab == NULL)
> 

Rafael

[Bug #15196] kmem_cache_create: duplicate cache ccid2_h

[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 2.6.32.  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=15196
Subject		: kmem_cache_create: duplicate cache ccid2_h
Submitter	: Heinz Diehl <htd-HjJ2MNWy62to6+H+lsi3Gti2O/JbrIOy@public.gmane.org>
Date		: 2010-01-30 18:33 (9 days old)
References	: http://marc.info/?l=linux-kernel&m=126487640324942&w=4
Handled-By	: Xiaotian Feng <xtfeng-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Patch		: http://patchwork.kernel.org/patch/77601/

Re: [Bug #15196] kmem_cache_create: duplicate cache ccid2_h

[Heinz Diehl]

On 08.02.2010, 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 2.6.32.  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=15196
> Subject		: kmem_cache_create: duplicate cache ccid2_h
> Submitter	: Heinz Diehl <htd-HjJ2MNWy62to6+H+lsi3Gti2O/JbrIOy@public.gmane.org>
> Date		: 2010-01-30 18:33 (9 days old)
> References	: http://marc.info/?l=linux-kernel&m=126487640324942&w=4
> Handled-By	: Xiaotian Feng <xtfeng-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> Patch		: http://patchwork.kernel.org/patch/77601/

Yes, it's still present in -rc7.

Re: [Bug #15196] kmem_cache_create: duplicate cache ccid2_h

[Rafael J. Wysocki]

On Monday 08 February 2010, Heinz Diehl wrote:
> On 08.02.2010, 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 2.6.32.  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=15196
> > Subject		: kmem_cache_create: duplicate cache ccid2_h
> > Submitter	: Heinz Diehl <htd-HjJ2MNWy62to6+H+lsi3Gti2O/JbrIOy@public.gmane.org>
> > Date		: 2010-01-30 18:33 (9 days old)
> > References	: http://marc.info/?l=linux-kernel&m=126487640324942&w=4
> > Handled-By	: Xiaotian Feng <xtfeng-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> > Patch		: http://patchwork.kernel.org/patch/77601/
> 
> Yes, it's still present in -rc7.

Hmm.  The bug is in net/dccp/ccid.c, so it looks like something for the
networking guys to merge.

Any chance to send a singed-off version of the patch do David?

Rafael

Re: [Bug #15196] kmem_cache_create: duplicate cache ccid2_h

[David Miller]

From: "Rafael J. Wysocki" <rjw-KKrjLPT3xs0@public.gmane.org>
Date: Mon, 8 Feb 2010 12:04:27 +0100

> Hmm.  The bug is in net/dccp/ccid.c, so it looks like something for the
> networking guys to merge.
> 
> Any chance to send a singed-off version of the patch do David?

Fixes for this are already in my net-2.6 tree, will send them
off to Linus later today, I was waiting for some netfilter
fixes which I just received:

commit 1386be55e32a3c5d8ef4a2b243c530a7b664c02c
Author: Gerrit Renker <gerrit-VsoRXqaLlyfQzY9nttDBhA@public.gmane.org>
Date:   Tue Feb 2 20:16:56 2010 +0000

    dccp: fix auto-loading of dccp(_probe)
    
    This fixes commit (38ff3e6bb987ec583268da8eb22628293095d43b) ("dccp_probe:
    Fix module load dependencies between dccp and dccp_probe", from 15 Jan).
    
    It fixes the construction of the first argument of try_then_request_module(),
    where only valid return codes from the first argument should be returned.
    
    What we do now is assign the result of register_jprobe() to ret, without
    the side effect of the comparison.
    
    Acked-by: Gerrit Renker <gerrit-VsoRXqaLlyfQzY9nttDBhA@public.gmane.org>
    Signed-off-by: Neil Horman <nhorman-2XuSBdqkA4R54TAoqtyWWQ@public.gmane.org>
    Signed-off-by: David S. Miller <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>

commit 8ed030dd0aa400d18c63861c2c6deb7c38f4edde
Author: Gerrit Renker <gerrit-VsoRXqaLlyfQzY9nttDBhA@public.gmane.org>
Date:   Mon Feb 1 02:12:19 2010 +0000

    dccp: fix bug in cache allocation
    
    This fixes a bug introduced in commit de4ef86cfce60d2250111f34f8a084e769f23b16
    ("dccp: fix dccp rmmod when kernel configured to use slub", 17 Jan): the
    vsnprintf used sizeof(slab_name_fmt), which became truncated to 4 bytes, since
    slab_name_fmt is now a 4-byte pointer and no longer a 32-character array.
    
    This lead to error messages such as
     FATAL: Error inserting dccp: No buffer space available
    
     >> kernel: [ 1456.341501] kmem_cache_create: duplicate cache cci
    generated due to the truncation after the 3rd character.
    
    Fixed for the moment by introducing a symbolic constant. Tested to fix the bug.
    
    Signed-off-by: Gerrit Renker <gerrit-VsoRXqaLlyfQzY9nttDBhA@public.gmane.org>
    Acked-by: Neil Horman <nhorman-2XuSBdqkA4R54TAoqtyWWQ@public.gmane.org>
    Signed-off-by: David S. Miller <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>

Re: [Bug #15144] HDA Intel Audio hang on boot

[Sid Boyce]

On 01/02/10 06:43, Takashi Iwai wrote:
> At Mon, 01 Feb 2010 02:01:21 +0000,
> Sid Boyce wrote:
>>
>> On 01/02/10 00:22, Rafael J. Wysocki wrote:
>>> This message has been generated automatically as a part of a report
>>> of recent regressions.
>>>
>>> The following bug entry is on the current list of known regressions
>>> from 2.6.32.  Please verify if it still should be listed and let me know
>>> (either way).
>>>
>>>
>>> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15144
>>> Subject		: HDA Intel Audio hang on boot
>>> Submitter	: Sid Boyce <sboyce@blueyonder.co.uk>
>>> Date		: 2010-01-15 1:24 (17 days old)
>>> References	: http://marc.info/?l=linux-kernel&m=126351866722507&w=4
>>>
>>>
>>>
>>
>> Still not fixed in 2.6.33-rc6. Takashi wrote that the fix was scheduled
>> for 2.6.33-rc6, but it did not appear.
> 
> It just slipped from rc6 due to my busy load.
> The pull request was sent yesterday.
> 
> 
> Takashi
> 

Up to 2.6.33-rc8 still needs the work around in
/etc/modprobe.d/50-sound.conf, so the kernel blacklist fix does not work.

# less /etc/modprobe.d/50-sound.conf

options slots=snd-hda-intel
# 9LTX.vLXC8EvZgR7:MCP55 High Definition Audio
alias snd-card-0 snd-hda-intel
options snd-hda-intel enable_msi=0
Regards
Sid.
-- 
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks

Re: [Bug #15144] HDA Intel Audio hang on boot

[Rafael J. Wysocki]

On Sunday 14 February 2010, Sid Boyce wrote:
> On 01/02/10 06:43, Takashi Iwai wrote:
> > At Mon, 01 Feb 2010 02:01:21 +0000,
> > Sid Boyce wrote:
> >>
> >> On 01/02/10 00:22, Rafael J. Wysocki wrote:
> >>> This message has been generated automatically as a part of a report
> >>> of recent regressions.
> >>>
> >>> The following bug entry is on the current list of known regressions
> >>> from 2.6.32.  Please verify if it still should be listed and let me know
> >>> (either way).
> >>>
> >>>
> >>> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=15144
> >>> Subject		: HDA Intel Audio hang on boot
> >>> Submitter	: Sid Boyce <sboyce@blueyonder.co.uk>
> >>> Date		: 2010-01-15 1:24 (17 days old)
> >>> References	: http://marc.info/?l=linux-kernel&m=126351866722507&w=4
> >>>
> >>>
> >>>
> >>
> >> Still not fixed in 2.6.33-rc6. Takashi wrote that the fix was scheduled
> >> for 2.6.33-rc6, but it did not appear.
> > 
> > It just slipped from rc6 due to my busy load.
> > The pull request was sent yesterday.
> > 
> > 
> > Takashi
> > 
> 
> Up to 2.6.33-rc8 still needs the work around in
> /etc/modprobe.d/50-sound.conf, so the kernel blacklist fix does not work.
> 
> # less /etc/modprobe.d/50-sound.conf
> 
> options slots=snd-hda-intel
> # 9LTX.vLXC8EvZgR7:MCP55 High Definition Audio
> alias snd-card-0 snd-hda-intel
> options snd-hda-intel enable_msi=0

Thanks for the update.

I'll be sending a summary regression report later today with a follow-up
message regarding this bug.  You won't need to reply to that one.

Rafael

Re: [Bug #15192] netperf ~50% regression with 2.6.33-rc1, bisect to 1b9508f

[Lin Ming]

On Mon, 2010-02-01 at 16:04 +0800, Mike Galbraith wrote:
> On Mon, 2010-02-01 at 01:22 +0100, Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> > 
> > The following bug entry is on the current list of known regressions
> > from 2.6.32.  Please verify if it still should be listed and let me know
> > (either way).
> 
> Yes, it should remain open.  We're currently waiting for some data from
> Lin Ming.  The regression itself isn't making much sense.. a kernel with
> NEWIDLE disabled should show the same performance, but does not.  

(sorry for late response, I'm just back from vacation)

We finally located this to a bug in mwait based C-state entry.
Venki's patch has fixed it.
http://patchwork.kernel.org/patch/78544/

Venki, this is the original report,
http://marc.info/?l=linux-kernel&m=126441481427331&w=4

Thanks,
Lin Ming

Re: [Bug #15192] netperf ~50% regression with 2.6.33-rc1, bisect to 1b9508f

[Mike Galbraith]

On Sat, 2010-02-20 at 15:52 +0800, Lin Ming wrote:
> On Mon, 2010-02-01 at 16:04 +0800, Mike Galbraith wrote:
> > On Mon, 2010-02-01 at 01:22 +0100, Rafael J. Wysocki wrote:
> > > This message has been generated automatically as a part of a report
> > > of recent regressions.
> > > 
> > > The following bug entry is on the current list of known regressions
> > > from 2.6.32.  Please verify if it still should be listed and let me know
> > > (either way).
> > 
> > Yes, it should remain open.  We're currently waiting for some data from
> > Lin Ming.  The regression itself isn't making much sense.. a kernel with
> > NEWIDLE disabled should show the same performance, but does not.  
> 
> (sorry for late response, I'm just back from vacation)
> 
> We finally located this to a bug in mwait based C-state entry.
> Venki's patch has fixed it.
> http://patchwork.kernel.org/patch/78544/
> 
> Venki, this is the original report,
> http://marc.info/?l=linux-kernel&m=126441481427331&w=4

Excellent, mystery solved.  (adds acpi)

	-Mike