[Bug 100725] [i915] oops in intel_update_cursor_plane(): "BUG: unable to handle kernel NULL pointer dereference"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100725

--- Comment #2 from krisman at collabora.co.uk ---
(In reply to David H. Gutteridge from comment #0)
> Created attachment 130919 [details]
> Log of dmesg with drm.debug enabled from boot to oops
> 
> I've been encountering a recurring kernel oops since I upgraded a (rather
> old) laptop to the 4.10 kernel series. These happen pretty consistently
> after the machine has been up for a few hours, and after a series of
> warnings are logged.
> I reproduced this with Fedora's 4.10.11-200.fc25.i686 kernel last evening.
> This is a regression against the 4.9 kernel.

> I've attached a dmesg log from boot to the oops, with drm.debug output
> enabled.

Sorry for the delay.  Is this still reproducible with a recent kernel?

The log has some high order allocation failure in GEM immediately preceding the
WARN_ON and oops, so this is likely a mishandling of the allocation error path.
 Since you observed this on a 4.10 distro kernel, can you please confirm it
still occur with the tip of drm-intel-nightly mainline branch and provide the
logs?

Thanks.

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