[Bug 74176] [snb] GPU hang IPEHR: 0x7a000002
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Wed Jan 29 05:09:49 PST 2014
https://bugs.freedesktop.org/show_bug.cgi?id=74176
Chris Wilson <chris at chris-wilson.co.uk> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |NEEDINFO
--- Comment #1 from Chris Wilson <chris at chris-wilson.co.uk> ---
It appears that the binding table for the source is a stale value (and points
before the start of the batch). This is impossible - so perhaps a
use-after-free?
commit 7df3da10e744d7f168ea3f30b21c434f99beae17
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date: Wed Jan 29 13:06:08 2014 +0000
sna/gen4+: Assert that the cached binding location is valid
We can at least check that it is in the right region (i.e. not past
where the current surface has been allocated from).
References: https://bugs.freedesktop.org/show_bug.cgi?id=74176
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
That should catch this particular error, but I hope compiling with assertions
enabled (--enable-debug) will detect the fault much earlier.
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