Public bug reported:
Binary package hint: linux-image-2.6.20-9-generic
The crash occurs each time I have my webcam connected.
Once a sound is played, it triggers the kernel dump
Webcam :
USB 046d:08c1 Logitech, Inc. QuickCam Fusion
Drivers :
/lib/modules/2.6.20-9-generic/kernel/ubuntu/media/usbvideo/uvcvideo.ko (for the
video part)
/lib/modules/2.6.20-9-generic/kernel/sound/usb/snd-usb* (for the audio part)
Looks like the crash is audio / alsa related.
Mar 9 19:49:56 leroutier-desktop kernel: edeth ehci_hcd ohci_hcd usbcore
thermal processor fan fbcon tileblit font bitblit softcursor vesafb capability
comm
oncap
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516523] CPU: 0
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516524] EIP:
0060:[<e0c48c01>] Tainted: P VLI
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516526] EFLAGS: 00010202
(2.6.20-9-generic #2)
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516545] EIP is at
snd_interval_list+0x31/0xb0 [snd_pcm]
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516548] eax: 00000001 ebx:
c19c01c0 ecx: 00000000 edx: 00000012
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516551] esi: d27a2d28 edi:
ffffffff ebp: c6955dec esp: c6955ca0
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516554] ds: 007b es: 007b
ss: 0068
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516557] Process pulseaudio
(pid: 16869, ti=c6954000 task=dc41d580 task.ti=c6954000)
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516559] Stack: c6955e5c
d27a2c00 c6955d2c c6955dec e0c4b13d ffffffff d27a2c00 da17eee0
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516565] e0c46997
c015bb8f 00000044 00000000 00000002 00000003 00000004 00000005
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516570] 00000006
00000007 00000008 00000009 0000000a 0000000b 0000000c 0000000d
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516574] Call Trace:
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516580] [<e0c4b13d>]
snd_pcm_hw_rule_list+0x2d/0x40 [snd_pcm]
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516594] [<e0c46997>]
snd_pcm_hw_refine+0x3f7/0x490 [snd_pcm]
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516604]
[__alloc_pages+79/832] __alloc_pages+0x4f/0x340
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516658] [<e0c46e2c>]
snd_pcm_hw_refine_user+0x6c/0x90 [snd_pcm]
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516671] [<e0c47406>]
snd_pcm_common_ioctl1+0x5b6/0x1040 [snd_pcm]
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516684] [<e27b387e>]
snd_usb_pcm_open+0x42e/0x550 [snd_usb_audio]
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516705] [<e27b2270>]
hw_rule_format+0x0/0xd0 [snd_usb_audio]
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516717] [<e0c48ca4>]
snd_pcm_hw_constraint_minmax+0x24/0x30 [snd_pcm]
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516730] [<e0c457c5>]
snd_pcm_hw_constraints_complete+0x165/0x1f0 [snd_pcm]
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516743] [<e0c45ab0>]
snd_pcm_hw_rule_buffer_bytes_max+0x0/0x40 [snd_pcm]
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516766] [<e0c45a0f>]
snd_pcm_open+0x13f/0x1b0 [snd_pcm]
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516832] [<e0c47ec9>]
snd_pcm_capture_ioctl1+0x39/0x400 [snd_pcm]
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516848] [<e0c482d3>]
snd_pcm_capture_ioctl+0x43/0x50 [snd_pcm]
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516859] [<e0c48290>]
snd_pcm_capture_ioctl+0x0/0x50 [snd_pcm]
Mar 9 19:49:56 leroutier-desktop kernel: [ 7292.516929] EIP: [<e0c48c01>]
snd_interval_list+0x31/0xb0 [snd_pcm] SS:ESP 0068:c6955ca0
Attaching complete /var/log/kern message asap
grep "EIP is at snd_interval_list+0x31/0xb0 \[snd_pcm\]" /var/log/kern.log | wc
-l
74
(in less than 1h)
** Affects: linux-source-2.6.20 (Ubuntu)
Importance: Undecided
Status: Unconfirmed
--
systematic alsa related kernel panic everytime a sound is played (with webcam
attached)
https://launchpad.net/bugs/90922
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