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The root window, and by extension any damage records referencing it, may be destroyed before shared pixmaps referencing it, which resulted in use-after-free / double-free in PixmapStopDirtyTracking. Fixes: b5b29289 ("prime: Sync shared pixmap from root window instead of screen pixmap") Reviewed-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
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