Ok, so that crash happened without any actual use of the camera. I'm guessing that when we got here, message_loop() returned a nullptr: https://searchfox.org/mozilla-central/rev/e558b2520cdb9aa2c86958325d61d1be984f2dc5/dom/media/systemservices/CamerasParent.cpp#219 I suspect we're running into a situation where sVideoCaptureThread's platform thread has finished, resulting in [message_loop_ being set to NULL](https://searchfox.org/mozilla-central/rev/e558b2520cdb9aa2c86958325d61d1be984f2dc5/ipc/chromium/src/base/thread.cc#198), and then we try to dispatch a new task.
Bug 1806918 Comment 8 Edit History
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Ok, so that crash happened without any actual use of the camera. I'm guessing that when we got here, message_loop() returned a nullptr: https://searchfox.org/mozilla-central/rev/a156a65ced2dae5913ae35a68e9445b8ee7ca457/dom/media/systemservices/CamerasParent.cpp#219 I suspect we're running into a situation where sVideoCaptureThread's platform thread has finished, resulting in [message_loop_ being set to NULL](https://searchfox.org/mozilla-central/rev/e558b2520cdb9aa2c86958325d61d1be984f2dc5/ipc/chromium/src/base/thread.cc#198), and then we try to dispatch a new task.