Public bug reported:
After upgrading on Dec. 2 to this kernel, the laptop experienced two
unexpected core dumps, which didn't happen before (with linux-
image-2.6.32-35-generic) nor after (with linux-image-2.6.38-13-generic),
when I upgraded. Traces added below. System was idle, unattended, with
the wi-fi adapter (which this concernes) unused (physically disabled,
ethernet cable attached and in use), when I heard an abnormal beep both
times.
More info available on request.
[26930.040975] ------------[ cut here ]------------
[26930.041010] WARNING: at /build/buildd/linux-2.6.32/net/wireless/core.c:614
wdev_cleanup_work+0xa7/0xd0 [cfg80211]()
[26930.041017] Hardware name: HP Compaq 6730b (GB988ET#ABH)
[26930.041022] Modules linked in: binfmt_misc pci_stub vboxpci vboxnetadp
vboxnetflt vboxdrv snd_hda_codec_analog fbcon tileblit font bitblit softcursor
vga16fb vgastate arc4 snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss
snd_mixer_oss snd_pcm snd_seq_dummy iwlagn snd_seq_oss snd_seq_midi i915
hp_accel lis3lv02d iwlcore snd_rawmidi drm_kms_helper snd_seq_midi_event
mac80211 drm snd_seq snd_timer snd_seq_device joydev cfg80211 input_polldev
intel_agp agpgart snd soundcore snd_page_alloc i2c_algo_bit led_class video
tpm_infineon output uvcvideo videodev v4l1_compat ppdev parport_pc psmouse
tpm_tis tpm tpm_bios serio_raw lp parport jfs ohci1394 ieee1394 tg3
[26930.041150] Pid: 9, comm: events/0 Not tainted 2.6.32-36-generic #79-Ubuntu
[26930.041155] Call Trace:
[26930.041171] [<c014d1e2>] warn_slowpath_common+0x72/0xa0
[26930.041189] [<f808ddd7>] ? wdev_cleanup_work+0xa7/0xd0 [cfg80211]
[26930.041207] [<f808ddd7>] ? wdev_cleanup_work+0xa7/0xd0 [cfg80211]
[26930.041216] [<c014d22a>] warn_slowpath_null+0x1a/0x20
[26930.041233] [<f808ddd7>] wdev_cleanup_work+0xa7/0xd0 [cfg80211]
[26930.041244] [<c01645ae>] run_workqueue+0x8e/0x150
[26930.041262] [<f808dd30>] ? wdev_cleanup_work+0x0/0xd0 [cfg80211]
[26930.041272] [<c01646f4>] worker_thread+0x84/0xe0
[26930.041281] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[26930.041288] [<c0168690>] ? autoremove_wake_function+0x0/0x50
[26930.041296] [<c0164670>] ? worker_thread+0x0/0xe0
[26930.041303] [<c0168404>] kthread+0x74/0x80
[26930.041311] [<c0168390>] ? kthread+0x0/0x80
[26930.041320] [<c0104087>] kernel_thread_helper+0x7/0x10
[26930.041327] ---[ end trace 20ffdb6cfaaed41c ]---
[26941.020783] eth0: no IPv6 routers present
[42650.203078] tg3: eth0: Flow control is on for TX and on for RX.
[42650.273992] ------------[ cut here ]------------
[42650.274015] WARNING: at /build/buildd/linux-2.6.32/net/wireless/core.c:614
wdev_cleanup_work+0xa7/0xd0 [cfg80211]()
[42650.274017] Hardware name: HP Compaq 6730b (GB988ET#ABH)
[42650.274019] Modules linked in: binfmt_misc pci_stub vboxpci vboxnetadp
vboxnetflt vboxdrv snd_hda_codec_analog fbcon tileblit font bitblit softcursor
vga16fb vgastate arc4 snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss
snd_mixer_oss snd_pcm snd_seq_dummy iwlagn snd_seq_oss snd_seq_midi i915
hp_accel lis3lv02d iwlcore snd_rawmidi drm_kms_helper snd_seq_midi_event
mac80211 drm snd_seq snd_timer snd_seq_device joydev cfg80211 input_polldev
intel_agp agpgart snd soundcore snd_page_alloc i2c_algo_bit led_class video
tpm_infineon output uvcvideo videodev v4l1_compat ppdev parport_pc psmouse
tpm_tis tpm tpm_bios serio_raw lp parport jfs ohci1394 ieee1394 tg3
[42650.274067] Pid: 9, comm: events/0 Tainted: G W 2.6.32-36-generic
#79-Ubuntu
[42650.274070] Call Trace:
[42650.274078] [<c014d1e2>] warn_slowpath_common+0x72/0xa0
[42650.274084] [<f808ddd7>] ? wdev_cleanup_work+0xa7/0xd0 [cfg80211]
[42650.274091] [<f808ddd7>] ? wdev_cleanup_work+0xa7/0xd0 [cfg80211]
[42650.274094] [<c014d22a>] warn_slowpath_null+0x1a/0x20
[42650.274100] [<f808ddd7>] wdev_cleanup_work+0xa7/0xd0 [cfg80211]
[42650.274106] [<c01645ae>] run_workqueue+0x8e/0x150
[42650.274113] [<f808dd30>] ? wdev_cleanup_work+0x0/0xd0 [cfg80211]
[42650.274116] [<c01646f4>] worker_thread+0x84/0xe0
[42650.274120] [<c0168690>] ? autoremove_wake_function+0x0/0x50
[42650.274123] [<c0164670>] ? worker_thread+0x0/0xe0
[42650.274126] [<c0168404>] kthread+0x74/0x80
[42650.274128] [<c0168390>] ? kthread+0x0/0x80
[42650.274132] [<c0104087>] kernel_thread_helper+0x7/0x10
[42650.274134] ---[ end trace 20ffdb6cfaaed41d ]---
[42650.276661] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[42660.992784] eth0: no IPv6 routers present
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/899909
Title:
Unexpected core dumps
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