[Bug 99977] [SNB] [i915] GPU HANG: ecode 6:0:0x85fffffc, in aquaria [2893], reason: Hang on render ring, action: reset

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99977

--- Comment #6 from Chris Wilson <chris at chris-wilson.co.uk> ---
Hmm, missed that it immediately hard locked. A bit of a nuisance, but could you
bisect the hard lockup?

Assuming it's not rogue hardware, hard lockups are usually broken locking (e.g.
recursive irq-off spinlocks). Trying a build with lockdep enabled may help - at
least to get a warning out.

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