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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - 2.99.905 sigbus frequently when running "x11perf -copyplane500" with SNA"
href="https://bugs.freedesktop.org/show_bug.cgi?id=70944#c14">Comment # 14</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - 2.99.905 sigbus frequently when running "x11perf -copyplane500" with SNA"
href="https://bugs.freedesktop.org/show_bug.cgi?id=70944">bug 70944</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>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 <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
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 <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
but my current suspicion is that this is a spurious SIGBUS thrown by the
kernel.</pre>
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