[Bug 91467] SIGSEGV "get_fb: failed to add fb" / sna_block_handler

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91467

--- Comment #2 from Chris Wilson <chris at chris-wilson.co.uk> ---
Can you addr2line -e /usr/lib/xorg/modules/drivers/intel_drv.so -i
0x7fe46b3c6e22 ? I think it implies that DamageRegion(sna->mode.shadow_damage)
is itself NULL. That address locally is RegionNotEmpty(), which we rely on in
many many places so is unlikely to be the culprit rather a victim. Still worth
./configure --enable-debug to catch such errors earlier.

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