[Bug 106002] GPU HANG: ecode 9:2:0xa8dfbffd

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106002

--- Comment #4 from Lionel Landwerlin <lionel.g.landwerlin at linux.intel.com> ---
It's unfortunate that the batchbuffers are not flagged by userspace so that we
could look at what caused the hang.

The instruction on which the command streamer hanged (MI_FLUSH_DW) doesn't
appear to be something that would be emitted by intel-vaapi-driver (difference
in the set bits).
It looks more like something from gen6_bsd_ring_flush().
Though that's really confusing because I wouldn't expect anybody to run with
legacy submission on SKL & 4.16.

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