[alsa-devel] ALSA hang on 4.13.0-rc7

[Takashi Iwai]

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?


Takashi