232183 2021-10-22 15:52:45 -0700 RemoteRenderingBackend::m_remoteDisplayLists should not be a WeakHashSet 2021-10-22 17:27:06 -0700 1 1 1 Unclassified WebKit WebKit2 WebKit Nightly Build Unspecified Unspecified RESOLVED DUPLICATE 232179 P2 Normal --- 1 wenson_hsieh webkit-unassigned cdumez kkinnunen oldest_to_newest 1807914 0 wenson_hsieh 2021-10-22 15:52:45 -0700 SSIA 1807925 1 wenson_hsieh 2021-10-22 16:05:54 -0700 This bug tracks addressing https://bugs.webkit.org/show_bug.cgi?id=232113#c10, where the WeakHashSet `m_remoteDisplayLists` is accessed from both the rendering backend thread and the main thread in the GPU process. This is dangerous, given that WeakPtr itself cannot be used from different threads. We should make this a HashSet or HashMap of Ref/RefPtr, and then manually remove entries from this map when releasing cached image buffers. 1807974 2 wenson_hsieh 2021-10-22 17:26:51 -0700 I think I'm going to fix this as a part of https://bugs.webkit.org/show_bug.cgi?id=232179, since both bugs can be addressed by very similar changes. 1807975 3 wenson_hsieh 2021-10-22 17:27:06 -0700 *** This bug has been marked as a duplicate of bug 232179 ***