Filed by: malexandru [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer.html#?job_id=256632590&repo=autoland
Full log: https://queue.taskcluster.net/v1/task/dmjifhqqTSusQsVTtQjoHA/runs/0/artifacts/public/logs/live_backing.log

23:38:55 INFO - GECKO(1637) | Spew[1809]: WARNING: Repeated accesses to the same dirty address 0x111a0dba0
23:38:57 INFO - GECKO(1637) | IPDL protocol error: Error unknown callback
23:38:57 INFO - GECKO(1637) | MEMORY STAT | vsize 7890MB | residentFast 564MB | heapAllocated 219MB
23:38:57 INFO - TEST-OK | devtools/client/webreplay/mochitest/browser_rr_inspector-03.js | took 10499ms
23:38:57 INFO - checking window state
23:38:57 INFO - GECKO(1637) | JavaScript error: resource://testing-common/PromiseTestUtils.jsm, line 112: uncaught exception: Object
23:38:57 INFO - Console message: [JavaScript Error: "uncaught exception: Object" {file: "resource://testing-common/PromiseTestUtils.jsm" line: 112}]
<...>
23:39:01 INFO - mozcrash Downloading symbols from: https://queue.taskcluster.net/v1/task/cK2felo9QgilR3TWTVI_vA/artifacts/public/build/target.crashreporter-symbols.zip
23:39:05 INFO - mozcrash Copy/paste: /Users/cltbld/tasks/task_1563233597/build/macosx64-minidump_stackwalk /var/folders/0d/t2ch6yv958q7bvm9fbndb8qc000017/T/tmpOZfMhe.mozrunner/minidumps/D26D741B-E14F-478B-A150-D872887B9E60.dmp /var/folders/0d/t2ch6yv958q7bvm9fbndb8qc000017/T/tmpQ25q7v
23:39:09 INFO - mozcrash Saved minidump as /Users/cltbld/tasks/task_1563233597/build/blobber_upload_dir/D26D741B-E14F-478B-A150-D872887B9E60.dmp
23:39:10 INFO - PROCESS-CRASH | Main app process exited normally | application crashed [@ mozilla::ipc::FatalError(char const*, bool)]
23:39:10 INFO - Crash dump filename: /var/folders/0d/t2ch6yv958q7bvm9fbndb8qc000017/T/tmpOZfMhe.mozrunner/minidumps/D26D741B-E14F-478B-A150-D872887B9E60.dmp
23:39:10 INFO - Operating system: Mac OS X
23:39:10 INFO - 10.14.5 18F132
23:39:10 INFO - CPU: amd64
23:39:10 INFO - family 6 model 69 stepping 1
23:39:10 INFO - 4 CPUs
23:39:10 INFO -
23:39:10 INFO - GPU: UNKNOWN
23:39:10 INFO -
23:39:10 INFO - Crash reason: EXC_BAD_ACCESS / KERN_INVALID_ADDRESS
23:39:10 INFO - Crash address: 0x0
23:39:10 INFO - Process uptime: 118 seconds
23:39:10 INFO -
23:39:10 INFO - Thread 0 (crashed)
23:39:10 INFO - 0 XUL!mozilla::ipc::FatalError(char const*, bool) [ProtocolUtils.cpp:54d9810b02ae4da2b278c06576f4d9e4438be7e5 : 264 + 0xe]
23:39:10 INFO - rax = 0x00007ffeedc4412c rdx = 0x000000000000000a
23:39:10 INFO - rcx = 0x00000001023a7de0 rbx = 0x000000010eff0619
23:39:10 INFO - rsi = 0x000000010efdf17d rdi = 0x00007ffeedc4412c
23:39:10 INFO - rbp = 0x00007ffeedc44180 rsp = 0x00007ffeedc44100
23:39:10 INFO - r8 = 0x0000000000000000 r9 = 0x0000000000000000
23:39:10 INFO - r10 = 0x0000000000000000 r11 = 0x00007ffddec64fd2
23:39:10 INFO - r12 = 0x0000000102536ac0 r13 = 0x0000000102f61830
23:39:10 INFO - r14 = 0x0000000000000000 r15 = 0x0000000102f52020
23:39:10 INFO - rip = 0x0000000109d09721
23:39:10 INFO - Found by: given as instruction pointer in context
23:39:10 INFO - 1 XUL!mozilla::ipc::IProtocol::HandleFatalError(char const*) const [ProtocolUtils.cpp:54d9810b02ae4da2b278c06576f4d9e4438be7e5 : 495 + 0x13]
23:39:10 INFO - rbp = 0x00007ffeedc44190 rsp = 0x00007ffeedc44190
23:39:10 INFO - rip = 0x0000000109d0aeac
23:39:10 INFO - Found by: previous frame's frame pointer
23:39:10 INFO - 2 XUL!mozilla::dom::PContentChild::OnMessageReceived(IPC::Message const&) [PContentChild.cpp: : 12076 + 0x10]
23:39:10 INFO - rbp = 0x00007ffeedc44f80 rsp = 0x00007ffeedc441a0
23:39:10 INFO - rip = 0x0000000109e09b00
23:39:10 INFO - Found by: previous frame's frame pointer
23:39:10 INFO - 3 XUL!mozilla::ipc::MessageChannel::DispatchMessage(IPC::Message&&) [MessageChannel.cpp:54d9810b02ae4da2b278c06576f4d9e4438be7e5 : 2158 + 0xd]
23:39:10 INFO - rbp = 0x00007ffeedc45050 rsp = 0x00007ffeedc44f90
23:39:10 INFO - rip = 0x0000000109d03963
23:39:10 INFO - Found by: previous frame's frame pointer
23:39:10 INFO - 4 XUL!mozilla::ipc::MessageChannel::MessageTask::Run() [MessageChannel.cpp:54d9810b02ae4da2b278c06576f4d9e4438be7e5 : 1970 + 0x15f]
23:39:10 INFO - rbp = 0x00007ffeedc450a0 rsp = 0x00007ffeedc45060
23:39:10 INFO - rip = 0x0000000109d04d18
23:39:10 INFO - Found by: previous frame's frame pointer

Nika, this seems to have started with your changes in Bug 1563604, could you please look into it?

These test failures are all in webreplay which does some pretty weird stuff with IPC. 302 :bhackett to look into it.

Hi Brian. The dt-wr job seems to fail each time it runs, either with this bug or with other ones:

https://treeherder.mozilla.org/#/jobs?repo=autoland&resultStatus=testfailed%2Cbusted%2Cexception&searchStr=os%2Cx%2C10.14%2Cshippable%2Copt%2Cmochitests%2Ctest-macosx1014-64-shippable%2Fopt-mochitest-devtools-webreplay-e10s%2Cm%28dt-wr%29&fromchange=07572fb43cf7b822c09d90a8b39f1280b6d531ce&tochange=64d95a85657b8200007ed62d9672bf6009f01aed&selectedJob=257001690

Any suggestion on how to get the job green?

https://hg.mozilla.org/mozilla-central/rev/905cb53bd118