[alsa-devel] workqueue lockup due to process_unsol_events stuck in azx_rirb_get_response

[Takashi Iwai]

On Mon, 30 Jan 2017 16:02:38 +0100,
Vlastimil Babka wrote:
> 
> On 01/25/2017 06:06 PM, Takashi Iwai wrote:
> > The code path is related with the runtime PM, so it's likely depending
> > on the device state, e.g. long-time pause or such.  I don't think Win
> > 10 plays a role, but who knows.
> >
> > In anyway, let me know if this helps.  Basically I can merge it even
> > for now, as the fix shouldn't give a regression.  But of course it'd
> > be better to have a test result :)
> 
> OK so unfortunately it now happened with the patch.

Hm, do you get the very same stack trace?

It's strange because azx_rirb_get_response() has the timeout of 1
second in its loop, so it can't wait forever.


Takashi