On Mon, Apr 24, 2006 at 04:26:10PM +0200, Takashi Iwai wrote:
> At Mon, 24 Apr 2006 15:34:30 +0200,
> I wrote:
> >
> > 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.
>
> But, not all entries seem flatten (e.g. pcm0p, sub0, etc).
> Could you show the output of "tree /proc/asound" ?
2.6.16 (good) 2.6.17-rc2-whatever (bad)
---------------------------------------------------------
/proc/asound/ /proc/asound/
|-- ICH5 -> card0 |-- ICH5 -> card0
|-- card0 |-- card0
| |-- codec97#0 | |-- codec97#0
| | |-- ac97#0-0 | | |-- ac97#0-0
| | `-- ac97#0-0+regs | | `-- ac97#0-0+regs
| |-- id | |-- id
| |-- intel8x0 | |-- intel8x0
| |-- oss_mixer | `-- oss_mixer
| |-- pcm0c |-- cards
| | |-- info |-- devices
| | |-- oss |-- modules
| | `-- sub0 |-- oss
| | |-- hw_params |-- oss
| | |-- info |-- oss
| | |-- prealloc |-- oss
| | |-- status |-- pcm
| | `-- sw_params |-- prealloc
| |-- pcm0p |-- prealloc
| | |-- info |-- prealloc
| | |-- oss |-- prealloc
| | `-- sub0 |-- prealloc
| | |-- hw_params |-- prealloc
| | |-- info |-- timers
| | |-- prealloc `-- version
| | |-- status
| | `-- sw_params 3 directories, 21 files
| |-- pcm1c
| | |-- info
| | |-- oss
| | `-- sub0
| | |-- hw_params
| | |-- info
| | |-- prealloc
| | |-- status
| | `-- sw_params
| |-- pcm2c
| | |-- info
| | `-- sub0
| | |-- hw_params
| | |-- info
| | |-- prealloc
| | |-- status
| | `-- sw_params
| |-- pcm3c
| | |-- info
| | `-- sub0
| | |-- hw_params
| | |-- info
| | |-- prealloc
| | |-- status
| | `-- sw_params
| `-- pcm4p
| |-- info
| `-- sub0
| |-- hw_params
| |-- info
| |-- prealloc
| |-- status
| `-- sw_params
|-- cards
|-- devices
|-- modules
|-- oss
| |-- devices
| `-- sndstat
|-- pcm
|-- timers
`-- version
16 directories, 52 files
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
