Messages in this thread |  | | Date | Sun, 23 Feb 2003 23:03:15 +0200 (EET) | From | Siim Vahtre <> | Subject | bug with alsa |
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2.5.62 kernel, w/o module support.
ALSA device list: #0: Intel 82801BA-ICH2 at 0xe800, irq 10
Firstly, I noticed that the soundsystem freezes in time-to-time for about half second or so. And it is terribly annoying when playing mp3 or video.
But even worse, sometimes the program that uses audio suddenly freezes with a kernel bug (given below) and after that, everything that wants to use audio will hang completely aswell. For example, using 'strace' on alsamixer now gives:
open("/dev/snd/controlC0", O_RDONLY) = 3 close(3
...and of course it hangs completely there.
After that, killing the process does not help either. Rebooting the machine helps... for about few hours after the bug appears again. Here is the bug that will come time-to-time when using audio in the first place:
Unable to handle kernel NULL pointer dereference at virtual address 0000005f printing eip: c02a1ed7 *pde = 00000000 Oops: 0000 CPU: 0 EIP: 0060:[<c02a1ed7>] Not tainted EFLAGS: 00210203 EIP is at snd_ctl_release+0x97/0xf0 eax: 0000005f ebx: c7dfd94c ecx: c7dfd95c edx: 0000005f esi: c60599e0 edi: c7dfd800 ebp: c4d06260 esp: c51b3f58 ds: 007b es: 007b ss: 0068 Process mplayer (pid: 3452, threadinfo=c51b2000 task=c53b3260) Stack: ffffffff c4d06260 00000000 c6059a00 c4d06260 c7fba520 c139ebd0 c3270580 c014d89b c139ebd0 c4d06260 c4d06260 00000000 c38442a0 c51b2000 c014bb64 c4d06260 c38442a0 c38442a0 c4d06260 00000000 c014bbf2 c4d06260 c38442a0 Call Trace: [<c014d89b>] __fput+0xdb/0xe0 [<c014bb64>] filp_close+0x74/0xa0 [<c014bbf2>] sys_close+0x62/0xa0 [<c01095df>] syscall_call+0x7/0xb
Code: 8b 00 0f 18 00 39 ca 75 f0 89 d8 ba ff ff 00 00 0f c1 10 0f
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