linux-kernel - Re: USB snd-usb-audio oops

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Date:	Tue, 25 Jul 2006 15:15:22 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Ian Stirling <tandra@...ve.plus.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: USB snd-usb-audio oops

At Sat, 22 Jul 2006 18:24:25 +0100,
Ian Stirling wrote:
> 
> This has hit me yesterday too - maybe, but I diddn't get it logged - as 
> it just locked.
> With enforce bandwidth on and off (today and yesterday)
> Otherwise the config is identical to the one I posted several messages ago.
> 
> I was simply trying to start mplayer - to play some tunes after a lot of 
> unplugging to test things.

Could you try ALSA HG version (from hg-mirror.alsa-project.org), or
alsa-current git tree?

There have been some fundamental changes in the ALSA core to fix this
kind of problems.


Takashi

> 
> 
> BUG: unable to handle kernel paging request at virtual address 1b154000
>   printing eip:
> c0283629
> *pde = 00000000
> Oops: 0000 [#1]
> PREEMPT
> Modules linked in: zd1211 toshiba_acpi aes_i586 rd snd_usb_audio 
> snd_usb_lib snd_hwdep usbhid uhci_hcd ehci_hcd
> ohci_hcd pcmcia firmware_class yenta_socket rsrc_nonstatic pcmcia_core 
> eepro100 twofish tea sha512 sha256 sha1 s
> erpent michael_mic md5 md4 khazad des deflate zlib_deflate zlib_inflate 
> crypto_null cast6 cast5 blowfish arc4 cr
> yptoloop loop sd_mod usb_storage libusual usbcore snd_es1968 
> snd_ac97_codec snd_ac97_bus snd_mpu401_uart snd_raw
> midi
> CPU:    0
> EIP:    0060:[<c0283629>]    Not tainted VLI
> EFLAGS: 00210246   (2.6.17laptop-3110-firstcut #7)
> EIP is at snd_ctl_release+0xb2/0x161
> eax: c2d42b60   ebx: 00200246   ecx: 00000000   edx: 1b154000
> esi: c2d42a00   edi: c7ec28a0   ebp: c4f20960   esp: c5fbff4c
> ds: 007b   es: 007b   ss: 0068
> Process mplayer (pid: 16279, threadinfo=c5fbe000 task=c7855a70)
> Stack: 00000010 c4f20960 c2919338 c51e96d4 c015110d c2919338 c4f20960 
> c7fcb220
>         c4f20960 c7f438e0 00000000 c4f20960 c014fadf c4f20960 c7f438e0 
> c4f20960
>         c7f438e0 00000004 c7f438e0 c5fbe000 c014fb64 c4f20960 c7f438e0 
> 00000004
> Call Trace:
>   <c015110d> __fput+0x190/0x1a3  <c014fadf> filp_close+0x36/0x57
>   <c014fb64> sys_close+0x64/0x99  <c0102d4f> syscall_call+0x7/0xb
> Code: 8d 74 26 00 8d 86 60 01 00 00 39 c2 74 2d 31 c9 3b 4a 48 73 14 89 
> d0 39 78 64 0f 84 a4 00 00 00 41 83 c0 0
> c 3b 4a 48 72 ee 8b 12 <8b> 02 8d 74 26 00 8d 86 60 01 00 00 39 c2 75 d3 
> 8d 86 4c 01 00
> EIP: [<c0283629>] snd_ctl_release+0xb2/0x161 SS:ESP 0068:c5fbff4c
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