[Bug 82864] [HSW i915 MSI-7817] S4 resume on Haswell causes memory corruption (OOM, ext4_, ...)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82864

--- Comment #6 from Imre Deak <imre.deak at intel.com> ---
(In reply to Jens from comment #3)
> In response to the comment posted at bugzilla.kernel.org:
> 
> > Jens, have you seen the problem since your last report (with or w/o the fixes)?
> 
> No.
> 
> > Could you still try if you can reproduce the problem with the latest -nightly
> > kernel and the same tree with the fixes reverted (resetting to 598ae05fd937 - 
> > "drm/i915: Emit even number of dwords when emitting LRIs").
> 
> I have checked out the linux-drm-nightly tree as of yesterday (3.18rc1,
> 88a443f45) and have tried several suspend/resume on one machine during "make
> -j4". Except for one watchdog timeout (networking) I have not experienced
> any problems except for the fact that the resume seems to take a little
> longer(?) than with 3.17rc1.

Ok. Not sure about the extra delay. Perhaps connected to the network timeout?
But for me the important now is that with -nightly you don't see the original
(more serious) problem.

> Regarding 598ae05fd937, "git show" does not find it, but I found this:
> http://cgit.freedesktop.org/drm-intel/commit/
> ?id=22a916aaa187946e8df724ab7838a0c13b45a9f4
> Is this the same commit? Do you want me to reverse patch it onto
> 598ae05fd937 and retest?

Yes that's the right commit, just before the suspend-fix patchset went in.
Maybe, I gave the wrong SHA1, or -nightly got rebased (it gets rebased
regularly). It would help if you could git reset to that commit and see if you
can reproduce the problem. I think I will close this bug in any case, but it
would help to know if it got fixed by the suspend-fix patchset (that you revert
with the git reset), or something else since 3.17rc1.

Thanks!

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