Messages in this thread | | | Date | Mon, 24 Apr 2006 15:34:30 +0200 | From | Takashi Iwai <> | Subject | Re: [Alsa-devel] Re: ALSA regression: oops on shutdown |
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At Mon, 24 Apr 2006 07:51:44 +0400, Alexey Dobriyan wrote: > > On Mon, Apr 24, 2006 at 07:11:42AM +0400, Alexey Dobriyan wrote: > > On Sun, Apr 23, 2006 at 10:39:19PM -0400, Lee Revell wrote: > > > > Andrew asked about precise steps of reproduction: > > > > rmmod snd_pcm_oss > > > > which is part of Gentoo install scripts (/etc/init.d/alsasound:134-140, to > > be precise) (basically lsmod | grep snd | xargs rmmod). > > > > BUG: unable to handle kernel paging request at virtual address 6b6b6b6b > > printing eip: > > c016c6a4 > > *pde = 00000000 > > Oops: 0000 [#1] > > PREEMPT > > Modules linked in: snd_pcm_oss snd_mixer_oss snd_intel8x0 snd_ac97_codec snd_ac97_bus snd_pcm snd_timer snd soundcore snd_page_alloc ehci_hcd uhci_hcd usbcore > > CPU: 0 > > EIP: 0060:[<c016c6a4>] Not tainted VLI > > EFLAGS: 00010286 (2.6.17-rc2-6b426e785cb81e53dc2fc4dcf997661472b470ef #1) > > EIP is at remove_proc_entry+0x2c/0x11c > > eax: 00000000 ebx: deb48b80 ecx: ffffffff edx: de11ed24 > > esi: de11ed24 edi: 6b6b6b6b ebp: de4cb000 esp: de4cbf28 > > ds: 007b es: 007b ss: 0068 > > Process rmmod (pid: 7735, threadinfo=de4cb000 task=c1487a90) > > Stack: <0>de11ed24 6b6b6b6b deb48b80 de11ed24 bf8590cc df93603b de4f0e78 00000000 > > df965fc8 de4f0d84 df967e74 df966184 de4f0d88 df95292d df967f00 00000000 > > c0125f7a 00000000 5f646e73 5f6d6370 0073736f de85d4a4 b7f27000 c013789d > > Call Trace: > > [<df93603b>] snd_info_unregister+0x2e/0x44 [snd] > > [<df965fc8>] snd_pcm_oss_proc_done+0x19/0x30 [snd_pcm_oss] > > [<df966184>] snd_pcm_oss_unregister_minor+0x3b/0x3f [snd_pcm_oss] > > [<df95292d>] snd_pcm_notify+0x4a/0x91 [snd_pcm] > > [<c0125f7a>] sys_delete_module+0x113/0x138 > > [<c013789d>] do_munmap+0xe2/0xef > > [<c010259b>] syscall_call+0x7/0xb > > Code: 85 d2 56 53 51 51 89 14 24 89 44 24 04 75 13 8d 4c 24 04 89 e2 e8 dd f7 ff ff 85 c0 0f 85 f2 00 00 00 8b 7c 24 04 31 c0 83 c9 ff <f2> ae f7 d1 49 b0 01 89 ce e8 fa 13 fa ff 8b 04 24 8d 58 38 83 > > EIP: [<c016c6a4>] remove_proc_entry+0x2c/0x11c SS:ESP 0068:de4cbf28 > > BUG: rmmod/7735, lock held at task exit time! > > [df960920] {register_mutex} > > .. held by: rmmod: 7735 [c1487a90, 118] > > ... acquired at: snd_pcm_notify+0x10/0x91 [snd_pcm] > > Other symptoms are 6 (six) "prealloc" files, 3 "oss" files and 1 "oss" > directory (according to highlighting): > > $ ls /proc/asound/ > card0 devices modules oss oss prealloc prealloc prealloc timers > ^^^ > directory > > cards ICH5 oss oss pcm prealloc prealloc prealloc version > > "ls -l" thinks all 4 "oss" files are files (again, according to > highlighting).
That's odd. It implies that the proc file paths are flatten. The "oss" should appear like:
/proc/asound/oss/devices /proc/asound/oss/sndstat /proc/asound/card0/pcm0p/sub0/oss /proc/asound/card0/pcm0c/sub0/oss
Any incompatibilites with procfs interface in mm?
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