Quoting Gustavo Padovan (2017-07-29 16:22:16) > From: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxx> > > If userspace already dropped its own reference by closing the sw_sync > fence fd we might end up in a deadlock where > dma_fence_is_signaled_locked() will trigger the release of the fence and > thus try to hold the lock to remove the fence from the list. > > dma_fence_is_signaled_locked() tries to release/free the fence and hold > the lock in the process. > > We fix that by changing the order operation and clean up the list and > rb-tree first. > > v2: Drop the fence get/put dance and manipulate the list first (Chris Wilson) > > Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Signed-off-by: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxx> Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> -Chris _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
