On Wed, 30 Aug 2017 13:42:41 +0200, Markus Trippelsdorf wrote: > > On 2017.08.30 at 13:34 +0200, Takashi Iwai wrote: > > On Wed, 30 Aug 2017 13:33:40 +0200, > > Markus Trippelsdorf wrote: > > > > > > On 2017.08.30 at 13:23 +0200, Takashi Iwai wrote: > > > > On Wed, 30 Aug 2017 12:03:34 +0200, > > > > Markus Trippelsdorf wrote: > > > > > > > > > > On my system ALSA sometimes hangs: > > > > > > > > > > sysrq: SysRq : Show Blocked State > > > > > task PC stack pid father > > > > > output:ALSA def D 0 171 1 0x00000000 > > > > > Call Trace: > > > > > ? __schedule+0x17c/0x720 > > > > > ? schedule_preempt_disabled+0x2d/0x80 > > > > > ? __mutex_lock_slowpath+0x141/0x420 > > > > > ? snd_pcm_common_ioctl1+0x2f/0x1400 > > > > > ? snd_pcm_common_ioctl1+0x2f/0x1400 > > > > > ? snd_card_file_remove+0x76/0x120 > > > > > ? snd_pcm_playback_ioctl+0x1c7/0x560 > > > > > ? dput+0xb6/0x1e0 > > > > > ? SyS_ioctl+0xa7/0x860 > > > > > ? task_work_run+0x70/0xa0 > > > > > ? entry_SYSCALL_64_fastpath+0x13/0x94 > > > > > > > > > > Only a reboot will fix the issue. > > > > > > > > Is this a regression? > > > > > > Yes. 4.11 is fine. > > > > And 4.12? > > Just build it and yes 4.12 is fine, too. > > (Before you ask, I have intention to bisect the issue. > It would be too annoying with the all the required reboots. That'd be really appreciated. We had lots of changes since 4.12 regarding PCM core stuff, so narrowing down would be a great help. > But if you want I can run scripts/faddr2line on the backtraces.) Let's try to narrow at first a bit. For such a problem, the trace itself is often too late, not the cause itself. thanks, Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
