Filed by: rvandermeulen [at] mozilla.com https://treeherder.mozilla.org/logviewer.html#?job_id=103110521&repo=mozilla-inbound https://queue.taskcluster.net/v1/task/JIC9OoOXQ-OkYYq9-xYbJg/runs/0/artifacts/public/logs/live_backing.log The test involved at least makes it plausibly-related.

The gecko log for this ASAN build shows errors from the address sanitizer after a lot of message failures: https://public-artifacts.taskcluster.net/JIC9OoOXQ-OkYYq9-xYbJg/0/public/test_info//gecko.log Here an excerpt: 1496168156559 Marionette TRACE 4 -> [0,7,"quit",{"flags":["eAttemptQuit"]}] 1496168156561 Marionette INFO New connections will no longer be accepted 1496168156858 Marionette TRACE 4 <- [1,7,null,{"cause":"shutdown"}] 1496168156889 Marionette DEBUG Closed connection 4 ###!!! [Child][MessageChannel] Error: (msgtype=0x4400F7,name=PContent::Msg_AccumulateChildHistograms) Channel closing: too late to send/recv, messages will be lost ###!!! [Child][MessageChannel] Error: (msgtype=0x4400F8,name=PContent::Msg_AccumulateChildKeyedHistograms) Channel closing: too late to send/recv, messages will be lost [lots and lots more] ASAN:DEADLYSIGNAL ================================================================= ==2709==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7f0de461f47e bp 0x7f0db3bfedf0 sp 0x7f0db3bfede0 T49) ==2709==The signal is caused by a WRITE memory access. ==2709==Hint: address points to the zero page. #0 0x7f0de461f47d (/home/worker/workspace/build/application/firefox/libxul.so+0xbae247d) #1 0x7f0df3f7b453 (/home/worker/workspace/build/application/firefox/libnspr4.so+0x7a453) #2 0x7f0df75726b9 (/lib/x86_64-linux-gnu/libpthread.so.0+0x76b9) #3 0x7f0df65fb82c (/lib/x86_64-linux-gnu/libc.so.6+0x10682c) AddressSanitizer can not provide additional info. SUMMARY: AddressSanitizer: SEGV (/home/worker/workspace/build/application/firefox/libxul.so+0xbae247d) Thread T49 (Shutdow~minator) created by T0 here: #0 0x4a3d56 (/home/worker/workspace/build/application/firefox/firefox+0x4a3d56) #1 0x7f0df3f781f9 (/home/worker/workspace/build/application/firefox/libnspr4.so+0x771f9) #2 0x7f0df3f77e0e (/home/worker/workspace/build/application/firefox/libnspr4.so+0x76e0e) #3 0x7f0de461fc47 (/home/worker/workspace/build/application/firefox/libxul.so+0xbae2c47) #4 0x7f0ddab51dac (/home/worker/workspace/build/application/firefox/libxul.so+0x2014dac) #5 0x7f0ddab55524 (/home/worker/workspace/build/application/firefox/libxul.so+0x2018524) #6 0x7f0de448d093 (/home/worker/workspace/build/application/firefox/libxul.so+0xb950093) #7 0x7f0de448f155 (/home/worker/workspace/build/application/firefox/libxul.so+0xb952155) #8 0x7f0de448f27c (/home/worker/workspace/build/application/firefox/libxul.so+0xb95227c) #9 0x7f0ddab51dac (/home/worker/workspace/build/application/firefox/libxul.so+0x2014dac) #10 0x7f0ddab55524 (/home/worker/workspace/build/application/firefox/libxul.so+0x2018524) #11 0x7f0de3c42017 (/home/worker/workspace/build/application/firefox/libxul.so+0xb105017) #12 0x7f0de3c1c9b4 (/home/worker/workspace/build/application/firefox/libxul.so+0xb0df9b4) #13 0x7f0ddd3d361e (/home/worker/workspace/build/application/firefox/libxul.so+0x489661e) #14 0x7f0ddd4105bc (/home/worker/workspace/build/application/firefox/libxul.so+0x48d35bc) #15 0x7f0ddac421de (/home/worker/workspace/build/application/firefox/libxul.so+0x21051de) #16 0x7f0ddac4e628 (/home/worker/workspace/build/application/firefox/libxul.so+0x2111628) #17 0x7f0ddb9f21f1 (/home/worker/workspace/build/application/firefox/libxul.so+0x2eb51f1) #18 0x7f0ddb9501d0 (/home/worker/workspace/build/application/firefox/libxul.so+0x2e131d0) #19 0x7f0de0dfc2cf (/home/worker/workspace/build/application/firefox/libxul.so+0x82bf2cf) #20 0x7f0de448c421 (/home/worker/workspace/build/application/firefox/libxul.so+0xb94f421) #21 0x7f0de465a6b4 (/home/worker/workspace/build/application/firefox/libxul.so+0xbb1d6b4) #22 0x7f0de465c23c (/home/worker/workspace/build/application/firefox/libxul.so+0xbb1f23c) #23 0x7f0de465d591 (/home/worker/workspace/build/application/firefox/libxul.so+0xbb20591) #24 0x4eb5a3 (/home/worker/workspace/build/application/firefox/firefox+0x4eb5a3) #25 0x7f0df651582f (/lib/x86_64-linux-gnu/libc.so.6+0x2082f) ==2709==ABORTING The assertion stacks in Marionette are still busted due to bug 1348961. Kan-Ru, do you have an idea?

This doesnt appear to have happened in a while so closing.

Moving bug to Testing::Marionette Client and Harness component per bug 1815831.