> For testing I use Debian/testing and alsa-utils and various > players like mpg321, madplay, etc from there. I've been using mplayer, madplay, aplay, arecord, speakertest . . . I'm using a rootfs built with OpenEmbedded, the alsa lib version is 1.0.17 root@overo:~# cat /proc/asound/version Advanced Linux Sound Architecture Driver Version 1.0.17. > Can you share the error log and steps when this typically occurs in > order to see can I reproduce it? Certainly! First a few basics -- I can run commands like: mplayer song.mp3 madplay song.mp3 aplay rawsong with no problems. If I run 'mplayer -ao alsa song.mp3' immediately after booting I get a crash due to a null substream pointer (output below). However if I run 'mplayer song.mp3' *before* 'mplayer -ao alsa song.mp3' then the latter command works! Here's the crash output (alsa debugging is enabled in the kernel): overo login: root login[1632]: root login on `ttyS2' root@overo:~# mplayer -ao alsa /Watermelon_Slim-Black_Water.mp3 MPlayer 1.0rc2-4.3.1 (C) 2000-2007 MPlayer Team CPU: ARM Playing /Watermelon_Slim-Black_Water.mp3. Audio file file format detected. Clip info: Title: Black Water Artist: Watermelon Slim Album: http://music.download.com Year: 2007 Comment: http://music.download.com/ Track: 1 Genre: Unknown ========================================================================== Forced audio codec: mad Opening audio decoder: [libmad] libmad mpeg audio decoder AUDIO: 44100 Hz, 2 ch, s16le, 192.0 kbit/13.61% (ratio: 24000->176400) Selected audio codec: [mad] afm: libmad (libMAD MPEG layer 1-2-3) ========================================================================== ALSA sound/core/pcm_native.c:2573: BUG? (substream != ((void *)0)) [<c00309c8>] (dump_stack+0x0/0x14) from [<c0259ba0>] (snd_pcm_playback_ioctl1+0x34/0x474) [<c0259b6c>] (snd_pcm_playback_ioctl1+0x0/0x474) from [<c025a0d8>] (snd_pcm_playback_ioctl+0x34/0x38) r7:c71bc000 r6:00000005 r5:bea41624 r4:80044100 [<c025a0a4>] (snd_pcm_playback_ioctl+0x0/0x38) from [<c00a5bb8>] (vfs_ioctl+0x34/0x78) [<c00a5b84>] (vfs_ioctl+0x0/0x78) from [<c00a5e6c>] (do_vfs_ioctl+0x270/0x280) r5:bea41624 r4:c71bc000 [<c00a5bfc>] (do_vfs_ioctl+0x0/0x280) from [<c00a5ebc>] (sys_ioctl+0x40/0x64) r7:c71bc000 r6:80044100 r5:bea41624 r4:00000005 [<c00a5e7c>] (sys_ioctl+0x0/0x64) from [<c002cc80>] (ret_fast_syscall+0x0/0x2c) r7:00000036 r6:00000400 r5:4001e1cc r4:bea41624 ALSA sound/core/pcm_native.c:2573: BUG? (substream != ((void *)0)) [<c00309c8>] (dump_stack+0x0/0x14) from [<c0259ba0>] (snd_pcm_playback_ioctl1+0x34/0x474) [<c0259b6c>] (snd_pcm_playback_ioctl1+0x0/0x474) from [<c025a0d8>] (snd_pcm_playback_ioctl+0x34/0x38) r7:c71bc000 r6:00000005 r5:bea41480 r4:81204101 [<c025a0a4>] (snd_pcm_playback_ioctl+0x0/0x38) from [<c00a5bb8>] (vfs_ioctl+0x34/0x78) [<c00a5b84>] (vfs_ioctl+0x0/0x78) from [<c00a5e6c>] (do_vfs_ioctl+0x270/0x280) r5:bea41480 r4:c71bc000 [<c00a5bfc>] (do_vfs_ioctl+0x0/0x280) from [<c00a5ebc>] (sys_ioctl+0x40/0x64) r7:c71bc000 r6:81204101 r5:bea41480 r4:00000005 [<c00a5e7c>] (sys_ioctl+0x0/0x64) from [<c002cc80>] (ret_fast_syscall+0x0/0x2c) r7:00000036 r6:402c0444 r5:007ee3b0 r4:402c0444 [AO_ALSA] alsa-lib: pcm_hw.c:261:(snd_pcm_hw_info) SNDRV_PCM_IOCTL_INFO failed: No such device or address [AO_ALSA] alsa-lib: pcm_direct.c:1100:(snd1_pcm_direct_initialize_poll_fd) unable to info for slave pcm [AO_ALSA] alsa-lib: pcm_dmix.c:1085:(snd_pcm_dmix_open) unable to initialize poll_fd [AO_ALSA] Playback open error: No such device or address Could not open/initialize audio device -> no sound. Audio: no sound Video: no video Exiting... (End of file) root@overo:~# ALSA sound/core/pcm_native.c:2180: BUG? (substream != ((void *)0)) [<c00309c8>] (dump_stack+0x0/0x14) from [<c025694c>] (snd_pcm_release+0x38/0xbc) [<c0256914>] (snd_pcm_release+0x0/0xbc) from [<c009af68>] (__fput+0xb8/0x170) r9:c7164000 r8:c74dd980 r7:c70c7634 r6:c71bc000 r5:c79faab0 r4:00000008 [<c009aeb0>] (__fput+0x0/0x170) from [<c009b2dc>] (fput+0x30/0x34) [<c009b2ac>] (fput+0x0/0x34) from [<c008746c>] (remove_vma+0x40/0x70) [<c008742c>] (remove_vma+0x0/0x70) from [<c0087568>] (exit_mmap+0xcc/0xf8) r5:c70c7600 r4:c7167898 [<c008749c>] (exit_mmap+0x0/0xf8) from [<c004a624>] (mmput+0x3c/0xc4) r6:c791a100 r5:00000000 r4:c70c7600 [<c004a5e8>] (mmput+0x0/0xc4) from [<c004dc8c>] (exit_mm+0x110/0x118) r5:c70c7600 r4:00000000 [<c004db7c>] (exit_mm+0x0/0x118) from [<c004f0f0>] (do_exit+0x1f0/0x6e8) r7:000000f8 r6:00000000 r5:c791a100 r4:c7164000 [<c004ef00>] (do_exit+0x0/0x6e8) from [<c004f664>] (do_group_exit+0x7c/0xac) [<c004f5e8>] (do_group_exit+0x0/0xac) from [<c004f6ac>] (sys_exit_group+0x18/0x1c) r5:0008c978 r4:0008c99c [<c004f694>] (sys_exit_group+0x0/0x1c) from [<c002cc80>] (ret_fast_syscall+0x0/0x2c) -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
