The gfxcard's commands buffer could be referencing both source and destination buffers which might be released before they actually get accessed by the h/w. Calling dfb_gfxcard_wait_serial() in the surface destructor ensures that commands are flushed and any pending h/w ops. are completed prior to the underlying buffer deallocation.
Applies for both DirectFB-1.7 and master branches.
0002-core-flush-and-wait-for-pending-h-w-ops.-prior-surfa.patch
Description: 0002-core-flush-and-wait-for-pending-h-w-ops.-prior-surfa.patch
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