kerneloops.org oops/warning report for the week ending February 7, 2010

Arjan van de Ven
2010-02-07T18:37:31Z

This week, a total of 771557 oopses and warnings have been reported.
That's a whole lot more than normal..... like by a lot.
The vast majority is in the ext4/quota interaction, specifically in the latest Fedora
kernel rpm (bad backport?)
RCU shows some fun as well, but pretty much exclusively on Dell machines.

Per file statistics
439978 fs/quota/dquot.c
157834 include/linux/rcutiny.h
68451 external/nvidia/binary (P)
33617 sound/pci/hda/hda_intel.c
18022 drivers/gpu/drm/radeon/radeon_object.c
4931 drivers/media/video/usbcam/usbcam_dev.c
3551 drivers/pci/dmar.c
2584 drivers/pci/intel-iommu.c
2488 include/linux/hardirq.h
2201 sound/pci/hda/hda_codec.c
2019 fs/eventpoll.c
1923 fs/notify/inotify/inotify_fsnotify.c

Rank 1: dquot_claim_space (warning)
Reported 440404 times (482753 total reports)
Interaction between EXT4 and the quota code.
It seems to have gotten really worse in the latest Fedora 12 kernel; botched backport?
This warning was last seen in version 2.6.33-rc4, and first seen in 2.6.30.
More info: http://www.kerneloops.org/searchweek.php?search=dquot_claim_space

Rank 2: rcu_exit_nohz (warning)
Almost exclusively seen on Dell machines; almost looks like some buggy SMM code causing
something evil.
Reported 86293 times (109140 total reports)
This warning was last seen in version 2.6.33-rc6-git0, and first seen in 2.6.28.
More info: http://www.kerneloops.org/searchweek.php?search=rcu_exit_nohz

Rank 3: rcu_enter_nohz (warning)
counterpart of the #2 item
Reported 71550 times (91147 total reports)
This warning was last seen in version 2.6.33-rc6-git0, and first seen in 2.6.24-rc7.
More info: http://www.kerneloops.org/searchweek.php?search=rcu_enter_nohz

Rank 4: nv_post_event (warning)
Reported 68189 times (69146 total reports)
Running the nvidia binary driver on an -rt kernel is just not a good idea.
Really. We mean it.
warning only shows up in tainted kernels
This warning was last seen in version 2.6.31.12, and first seen in 2.6.29.5.
More info: http://www.kerneloops.org/searchweek.php?search=nv_post_event

Rank 5: azx_send_cmd (warning)
Reported 33409 times (49076 total reports)
This warning was last seen in version 2.6.31.12, and first seen in 2.6.31-rc7-git2.
More info: http://www.kerneloops.org/searchweek.php?search=azx_send_cmd

Rank 6: radeon_object_create (oops)
Reported 18055 times (27801 total reports)
List corruption, assumed fixed in 2.6.32
This oops was last seen in version 2.6.32.7, and first seen in 2.6.31-rc1-git7.
More info: http://www.kerneloops.org/searchweek.php?search=radeon_object_create

Rank 7: native_apic_write_dummy (warning)
Reported 10290 times (17346 total reports)
This warning was last seen in version 2.6.32.1, and first seen in 2.6.30.
More info: http://www.kerneloops.org/searchweek.php?search=native_apic_write_dummy

Rank 8: usbcam_videobuf_queue (warning)
Reported 4931 times (6168 total reports)
[fedora] Out of tree driver calling mutex code from interrupt context
This warning was last seen in version 2.6.31.12, and first seen in 2.6.27.30.
More info: http://www.kerneloops.org/searchweek.php?search=usbcam_videobuf_queue

Rank 9: check_zero_address (warning)
Reported 3552 times (5554 total reports)
[bios] The BIOS advertizes a zero address for the DMAR table
This warning was last seen in version 2.6.33-rc6, and first seen in 2.6.31.5.
More info: http://www.kerneloops.org/searchweek.php?search=check_zero_address

Rank 10: snd_array_new (warning)
Reported 2201 times (2971 total reports)
This warning was last seen in version 2.6.31.12, and first seen in 2.6.27.5.
More info: http://www.kerneloops.org/searchweek.php?search=snd_array_new

Rank 11: iommu_prepare_identity_map (warning)
Reported 2147 times (3197 total reports)
This warning was last seen in version 2.6.33-rc6-git1, and first seen in 2.6.31.5.
More info: http://www.kerneloops.org/searchweek.php?search=iommu_prepare_identity_map

Rank 12: ep_call_nested (warning)
-rt kernels only; locking issue between eventpoll and a networking driver??
Reported 2019 times
This warning was last seen in version 2.6.31.12, and first seen in 2.6.31.12.
More info: http://www.kerneloops.org/searchweek.php?search=ep_call_nested

--
Arjan van de Ven Intel Open Source Technology Centre
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