(In reply to Mathieu Belanger from comment #25)
> I confirm that a system wide nongg do not fix random surprise crash I get on
> filezilla and phpstorm.
> 
> Switching to system wide nodma (that sound scary on the performance side)

Yes but that unfortunately is exactly what "solved" the sdma0 freezes for me.
Let's hope that a proper fix comes as soon as possible!