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Fixes a regression from
commit 41da295eb5
Author: Keith Packard <keithp@keithp.com>
Date: Sun Nov 3 13:12:40 2013 -0800
Trap SIGBUS to handle truncated shared memory segments
that causes the SIGBUS handler to fail to chain up correctly and
corrupts nearby memory instead.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>