[Bug 98690] [SKL bisected] System freeze when starting X using kernel 4.9-rc1 or later

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98690

--- Comment #37 from Peter Ujfalusi <peter.ujfalusi at gmail.com> ---
Gleb,

(In reply to Gleb Nemshilov from comment #36)
> Created attachment 128944 [details]
> dmesg.log for 4.10-rc3 + patch1 + patch1.5 and "nouveau.runpm=0"
> 
> I also did the following:
> dmesg.log for 4.10-rc3 + patch1 + patch1.5 and "nouveau.runpm=0" as kernel
> parameter
> 
> So it's the same kernel as with 4.10-rc3 + patch1 + patch1.5

Thank you for the logs! The race looks to be related to PM indeed. There is one
path I can see where work scheduling order can be different when the PM is
enabled.

I'll attach a patch to see if that is the case.

Regards,
Péter

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