[Bug 70944] 2.99.905 sigbus frequently when running "x11perf -copyplane500" with SNA

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70944

--- Comment #14 from Chris Wilson <chris at chris-wilson.co.uk> ---
The upload still looks ok. I've placed assertions around the pointer access to
verify that they are within bounds:

commit 0e6aca90c7b0b9edd5873034bcf0f3d8b2a9f065
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Tue Oct 29 13:50:51 2013 +0000

    sna: asserts bitmap uploads are correct

    Place guards around the pointer accesses to verify that they are within
    the bitmap.

    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

but my current suspicion is that this is a spurious SIGBUS thrown by the
kernel.

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