Comment # 8 on bug 1213808 from Matwey Kornilov

(In reply to Takashi Iwai from comment #7)
> OK, please keep testing with it.
> 
> Meanwhile, I'm building a test kernel with the backport of the upstream fix
> patch you suggested for SLE15-SP4.  It's being built in OBS
> home:tiwai:bsc1213808 repo.  Once after the build finishes, please give it a
> try later.

I have been running 5.14.21-150400.1.g3e74086-default for 96 hours without any
problem. I think that the patch really fixes the initial issue.