On 2017.08.30 at 14:56 +0200, Takashi Iwai wrote:
On Wed, 30 Aug 2017 14:33:36 +0200, Takashi Iwai wrote:
On Wed, 30 Aug 2017 14:26:51 +0200, Markus Trippelsdorf wrote:
On 2017.08.30 at 13:46 +0200, Takashi Iwai wrote:
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?
The issue started with:
commit 68b4acd322494444803a3f49884ae889c8ec6689 (HEAD, refs/bisect/bad) Author: Takashi Iwai tiwai@suse.de Date: Tue May 24 15:07:39 2016 +0200
ALSA: pcm: Apply power lock globally to common ioctlsThanks, that looks fitting with your problem description. I'll take a deeper look.
Could you try the patch below?
Yes, it fixes the problem. Thanks.