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Via82xx soundcard, on running wavesurfer (http://www.speech.kth.se/wavesurfer/download.html - excellent), I often get an oops in snd_pcm_format_set_silence, especially with short segments of sound: Unable to handle kernel paging request at virtual address e08ca000 printing eip: e0923dff *pde = 1fed3067 *pte = 00000000 Oops: 0002 [#1] CPU: 0 EIP: 0060:[<e0923dff>] Not tainted EFLAGS: 00010217 EIP is at snd_pcm_format_set_silence+0x9f/0x1b0 [snd_pcm] eax: 00000000 ebx: e08c8000 ecx: 000004e2 edx: 0000338a esi: 00000002 edi: e08ca000 ebp: 000019c5 esp: d4f9df28 ds: 007b es: 007b ss: 0068 Process wish8.4 (pid: 10341, threadinfo=d4f9c000 task=c0f1d880) Stack: 00000002 e09aa589 000019c5 de226000 dfccf080 de018ce0 e09aabd9 00000002 e08c8000 000019c5 c44d3180 de018ce0 ddff2a00 c44d3180 e09abfd2 de018ce0 40567aa0 c44d3180 dfff41c0 c897ec0c c9c4f380 c015240b c897ec0c c44d3180 Call Trace: [<e09aa589>] snd_pcm_oss_write1+0x39/0x1f0 [snd_pcm_oss] [<e09aabd9>] snd_pcm_oss_sync+0x69/0x160 [snd_pcm_oss] [<e09abfd2>] snd_pcm_oss_release+0x22/0xb0 [snd_pcm_oss] [<c015240b>] __fput+0xeb/0x100 [<c0150b19>] filp_close+0x59/0x90 [<c0150ba0>] sys_close+0x50/0x60 [<c010b18b>] syscall_call+0x7/0xb I added a printk to snd_pcm_format_set_silence, it outputs the following during general playback: printk("format: %d, %d\n", snd_pcm_format_width(format), samples); format: 16, 432 format: 16, 4864 format: 16, 16 format: 16, 3344 format: 16, 1520 However, here is the entire log of a short transmit: >Oct 16 10:24:37 desktop kernel: format: 8, 49200 Oct 16 10:24:37 desktop kernel: format: 16, 32768 Oct 16 10:24:37 desktop kernel: format: 16, 4358 Oct 16 10:24:37 desktop kernel: format: 16, 4864 Oct 16 10:24:37 desktop kernel: format: 16, 16 Oct 16 10:24:37 desktop kernel: format: 16, 5216 Oct 16 10:24:37 desktop kernel: format: 16, 16 Oct 16 10:24:37 desktop kernel: format: 16, 5616 Oct 16 10:24:37 desktop kernel: format: 16, 16 Oct 16 10:24:37 desktop kernel: format: 16, 12 Oct 16 10:24:37 desktop kernel: format: 16, 4 Oct 16 10:24:37 desktop kernel: format: 16, 16 Oct 16 10:24:37 desktop last message repeated 5 times Oct 16 10:24:37 desktop kernel: format: 16, 8 Oct 16 10:24:37 desktop kernel: format: 16, 8 Oct 16 10:24:37 desktop kernel: format: 16, 16 Oct 16 10:24:37 desktop kernel: format: 16, 6676 Oct 16 10:24:37 desktop kernel: Unable to handle kernel paging request at virtual address e09ae000 Especially the '8' seems interesting. Module Size Used by nls_iso8859_1 3968 0 snd_pcm_oss 47652 2 snd_mixer_oss 16896 1 snd_pcm_oss snd_via82xx 21472 2 snd_pcm 84132 2 snd_pcm_oss,snd_via82xx snd_timer 20868 1 snd_pcm snd_ac97_codec 51588 1 snd_via82xx snd_page_alloc 9348 2 snd_via82xx,snd_pcm snd_mpu401_uart 5888 1 snd_via82xx snd_rawmidi 19488 1 snd_mpu401_uart snd 42724 8 snd_pcm_oss,snd_mixer_oss,snd_via82xx,snd_pcm,snd_timer,snd_ac97_codec,snd_mpu401_uart,snd_rawmidi I also have weird other things with this driver, a sudden speedup of playback for a few seconds, where the sound is interleaved with rasping noises. This speedup stops after a few seconds, and also if I press pause and play in xmms. This speedup almost always happens a few seconds after starting playback of an mp3 with cmms. -- http://www.PowerDNS.com Open source, database driven DNS Software http://lartc.org Linux Advanced Routing & Traffic Control HOWTO - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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