Bug: Intermittent browser/components/preferences/tests/browser_sync_pairing.js | application crashed [@ mozalloc_handle_oom(unsigned int)]
Status: RESOLVED
Priority: --
Resolution: DUPLICATE
Created: 2021-12-23 15:15:17+00:00
Resolved: 2021-12-27 06:31:11+00:00

**Filed by:** nfay [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=362223307&repo=try
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/SrobAVmYTlq34xyxiX_Duw/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2021-12-23T14:37:57.759Z] 14:37:57     INFO - TEST-START | browser/components/preferences/tests/browser_sync_pairing.js
<...>
[task 2021-12-23T14:37:58.917Z] 14:37:58     INFO - TEST-PASS | browser/components/preferences/tests/browser_sync_pairing.js | All expectedStyleSheetURLs should have been found - 
[task 2021-12-23T14:37:58.917Z] 14:37:58     INFO - Buffered messages finished
[task 2021-12-23T14:37:58.918Z] 14:37:58    ERROR - TEST-UNEXPECTED-FAIL | browser/components/preferences/tests/browser_sync_pairing.js | application terminated with exit code 1
[task 2021-12-23T14:37:58.919Z] 14:37:58     INFO - runtests.py | Application ran for: 0:02:56.077208
[task 2021-12-23T14:37:58.920Z] 14:37:58     INFO - zombiecheck | Reading PID log: C:\Users\task_1640269142\AppData\Local\Temp\tmp4mf9m4_lpidlog
[task 2021-12-23T14:37:58.921Z] 14:37:58     INFO - ==> process 2200 launched child process 2300 ("Z:\task_1640269142\build\application\firefox\firefox.exe" -contentproc --channel="2200.0.1054229292\279815819" -childID 1 -isForBrowser -prefsHandle 2080 -prefMapHandle 2072 -prefsLen 1 -prefMapSize 257563 -jsInitHandle 880 -jsInitLen 279340 -parentBuildID 20211223110206 -appDir "Z:\task_1640269142\build\application\firefox\browser" - 2200 "\\.\pipe\gecko-crash-server-pipe.2200" 2160 1835f110 tab)
[task 2021-12-23T14:37:58.923Z] 14:37:58     INFO - ==> process 2200 launched child process 3544 ("Z:\task_1640269142\build\application\firefox\firefox.exe" -contentproc --channel="2200.1.1964842754\1826212093" -childID 2 -isForBrowser -prefsHandle 2540 -prefMapHandle 2536 -prefsLen 221 -prefMapSize 257563 -jsInitHandle 880 -jsInitLen 279340 -parentBuildID 20211223110206 -appDir "Z:\task_1640269142\build\application\firefox\browser" - 2200 "\\.\pipe\gecko-crash-server-pipe.2200" 2552 1a6f4e30 tab)
[task 2021-12-23T14:37:58.924Z] 14:37:58     INFO - ==> process 2200 launched child process 5300 ("Z:\task_1640269142\build\application\firefox\firefox.exe" -contentproc --channel="2200.2.1156970247\519514461" -childID 3 -isForBrowser -prefsHandle 2580 -prefMapHandle 2644 -prefsLen 261 -prefMapSize 257563 -jsInitHandle 880 -jsInitLen 279340 -parentBuildID 20211223110206 -appDir "Z:\task_1640269142\build\application\firefox\browser" - 2200 "\\.\pipe\gecko-crash-server-pipe.2200" 2676 19177500 tab)
[task 2021-12-23T14:37:58.926Z] 14:37:58     INFO - ==> process 2200 launched child process 4068 ("Z:\task_1640269142\build\application\firefox\firefox.exe" -contentproc --channel="2200.3.1458192658\329463394" -parentBuildID 20211223110206 -prefsHandle 2940 -prefMapHandle 2928 -prefsLen 1810 -prefMapSize 257563 -appDir "Z:\task_1640269142\build\application\firefox\browser" - 2200 "\\.\pipe\gecko-crash-server-pipe.2200" 2952 18355bf0 rdd)
[task 2021-12-23T14:37:58.927Z] 14:37:58     INFO - ==> process 2200 launched child process 2748 ("Z:\task_1640269142\build\application\firefox\firefox.exe" -contentproc --channel="2200.5.1131690995\1662542959" -childID 4 -isForBrowser -prefsHandle 3128 -prefMapHandle 3616 -prefsLen 9329 -prefMapSize 257563 -jsInitHandle 880 -jsInitLen 279340 -parentBuildID 20211223110206 -appDir "Z:\task_1640269142\build\application\firefox\browser" - 2200 "\\.\pipe\gecko-crash-server-pipe.2200" 3620 23aa0650 tab)
[task 2021-12-23T14:37:58.928Z] 14:37:58     INFO - ==> process 2200 launched child process 5612 ("Z:\task_1640269142\build\application\firefox\firefox.exe" -contentproc --channel="2200.6.2099908823\1960699921" -childID 5 -isForBrowser -prefsHandle 3868 -prefMapHandle 3840 -prefsLen 9571 -prefMapSize 257563 -jsInitHandle 880 -jsInitLen 279340 -parentBuildID 20211223110206 -appDir "Z:\task_1640269142\build\application\firefox\browser" - 2200 "\\.\pipe\gecko-crash-server-pipe.2200" 3880 305a1e30 tab)
[task 2021-12-23T14:37:58.930Z] 14:37:58     INFO - ==> process 2200 launched child process 5780 ("Z:\task_1640269142\build\application\firefox\firefox.exe" -contentproc --channel="2200.7.1081850177\605073560" -childID 6 -isForBrowser -prefsHandle 4388 -prefMapHandle 4400 -prefsLen 9853 -prefMapSize 257563 -jsInitHandle 880 -jsInitLen 279340 -parentBuildID 20211223110206 -appDir "Z:\task_1640269142\build\application\firefox\browser" - 2200 "\\.\pipe\gecko-crash-server-pipe.2200" 4380 1b57ef80 tab)
[task 2021-12-23T14:37:58.930Z] 14:37:58     INFO - zombiecheck | Checking for orphan process with PID: 2748
[task 2021-12-23T14:37:58.931Z] 14:37:58     INFO - zombiecheck | Checking for orphan process with PID: 4068
[task 2021-12-23T14:37:58.931Z] 14:37:58     INFO - zombiecheck | Checking for orphan process with PID: 5612
[task 2021-12-23T14:37:58.932Z] 14:37:58     INFO - zombiecheck | Checking for orphan process with PID: 5300
[task 2021-12-23T14:37:58.932Z] 14:37:58     INFO - zombiecheck | Checking for orphan process with PID: 5780
[task 2021-12-23T14:37:58.933Z] 14:37:58     INFO - zombiecheck | Checking for orphan process with PID: 3544
[task 2021-12-23T14:37:58.933Z] 14:37:58     INFO - zombiecheck | Checking for orphan process with PID: 2300
[task 2021-12-23T14:37:58.934Z] 14:37:58     INFO - mozcrash Downloading symbols from: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/LOjCBQb0QL6SGEa34f_rCw/artifacts/public/build/target.crashreporter-symbols.zip
[task 2021-12-23T14:38:05.843Z] 14:38:05     INFO - mozcrash Copy/paste: Z:/task_1640269142/fetches\minidump_stackwalk\minidump_stackwalk.exe --symbols-url=https://symbols.mozilla.org/ --human C:\Users\task_1640269142\AppData\Local\Temp\tmpzn76bv7r.mozrunner\minidumps\97eabb24-30f1-45ad-b52c-cd50e54612e9.dmp C:\Users\task_1640269142\AppData\Local\Temp\tmp4yr6tzv4
[task 2021-12-23T14:38:16.292Z] 14:38:16     INFO - mozcrash Saved minidump as Z:\task_1640269142\build\blobber_upload_dir\97eabb24-30f1-45ad-b52c-cd50e54612e9.dmp
[task 2021-12-23T14:38:16.299Z] 14:38:16     INFO - mozcrash Saved app info as Z:\task_1640269142\build\blobber_upload_dir\97eabb24-30f1-45ad-b52c-cd50e54612e9.extra
[task 2021-12-23T14:38:16.719Z] 14:38:16     INFO - PROCESS-CRASH | browser/components/preferences/tests/browser_sync_pairing.js | application crashed [@ mozalloc_handle_oom(unsigned int)]
[task 2021-12-23T14:38:16.719Z] 14:38:16     INFO - Mozilla crash reason: out of memory: 0x0000000000100000 bytes requested
[task 2021-12-23T14:38:16.719Z] 14:38:16     INFO - Crash dump filename: C:\Users\task_1640269142\AppData\Local\Temp\tmpzn76bv7r.mozrunner\minidumps\97eabb24-30f1-45ad-b52c-cd50e54612e9.dmp
[task 2021-12-23T14:38:16.719Z] 14:38:16     INFO - Operating system: Windows NT
[task 2021-12-23T14:38:16.719Z] 14:38:16     INFO -                   6.1.7601 Service Pack 1
[task 2021-12-23T14:38:16.719Z] 14:38:16     INFO - CPU: x86
[task 2021-12-23T14:38:16.719Z] 14:38:16     INFO -      GenuineIntel family 6 model 63 stepping 2
[task 2021-12-23T14:38:16.719Z] 14:38:16     INFO -      8 CPUs
[task 2021-12-23T14:38:16.719Z] 14:38:16     INFO - 
[task 2021-12-23T14:38:16.719Z] 14:38:16     INFO - Crash reason:  EXCEPTION_BREAKPOINT
[task 2021-12-23T14:38:16.719Z] 14:38:16     INFO - Crash address: 0x6afbf7ec
[task 2021-12-23T14:38:16.719Z] 14:38:16     INFO - Process uptime: 176 seconds
[task 2021-12-23T14:38:16.719Z] 14:38:16     INFO - 
[task 2021-12-23T14:38:16.719Z] 14:38:16     INFO - Thread 27  (crashed)
[task 2021-12-23T14:38:16.719Z] 14:38:16     INFO -  0  mozglue.dll!mozalloc_abort(char const* const) [mozalloc_abort.cpp:caa506569012b215d72c19cf528dbee496f7fc39 : 26 + 0x17]
[task 2021-12-23T14:38:16.720Z] 14:38:16     INFO -     eip = 0x6afbf7ec   esp = 0x0234e588   ebp = 0x0234e594   ebx = 0x6acdf9b0
[task 2021-12-23T14:38:16.720Z] 14:38:16     INFO -     esi = 0x0234e5a0   edi = 0x00000002   eax = 0x0000000a   ecx = 0x6ace7af0
[task 2021-12-23T14:38:16.720Z] 14:38:16     INFO -     edx = 0x00000000   efl = 0x00000206
[task 2021-12-23T14:38:16.720Z] 14:38:16     INFO -     Found by: given as instruction pointer in context
[task 2021-12-23T14:38:16.720Z] 14:38:16     INFO -  1  mozglue.dll!mozalloc_handle_oom(unsigned int) [mozalloc_oom.cpp:caa506569012b215d72c19cf528dbee496f7fc39 : 51 + 0x8]
[task 2021-12-23T14:38:16.720Z] 14:38:16     INFO -     eip = 0x6afbf8c2   esp = 0x0234e59c   ebp = 0x0234e5d4   ebx = 0x360bdb04
[task 2021-12-23T14:38:16.720Z] 14:38:16     INFO -     esi = 0x00000000   edi = 0x360bdb4c
[task 2021-12-23T14:38:16.720Z] 14:38:16     INFO -     Found by: call frame info
[task 2021-12-23T14:38:16.720Z] 14:38:16     INFO -  2  xul.dll + 0x4190aea
[task 2021-12-23T14:38:16.720Z] 14:38:16     INFO -     eip = 0x5c250aeb   esp = 0x0234e5dc   ebp = 0x0234e5e0   ebx = 0x360bdb04
[task 2021-12-23T14:38:16.720Z] 14:38:16     INFO -     esi = 0x00000000   edi = 0x360bdb4c
[task 2021-12-23T14:38:16.720Z] 14:38:16     INFO -     Found by: call frame info
[task 2021-12-23T14:38:16.720Z] 14:38:16     INFO -  3  xul.dll + 0x47a898
[task 2021-12-23T14:38:16.720Z] 14:38:16     INFO -     eip = 0x5853a899   esp = 0x0234e5e8   ebp = 0x0234e898
[task 2021-12-23T14:38:16.720Z] 14:38:16     INFO -     Found by: previous frame's frame pointer
[task 2021-12-23T14:38:16.721Z] 14:38:16     INFO -  4  xul.dll + 0x14468c4
[task 2021-12-23T14:38:16.721Z] 14:38:16     INFO -     eip = 0x595068c5   esp = 0x0234e8a0   ebp = 0x0234eae8
[task 2021-12-23T14:38:16.721Z] 14:38:16     INFO -     Found by: previous frame's frame pointer
[task 2021-12-23T14:38:16.721Z] 14:38:16     INFO -  5  xul.dll + 0x1ca949a
[task 2021-12-23T14:38:16.721Z] 14:38:16     INFO -     eip = 0x59d6949b   esp = 0x0234eaf0   ebp = 0x0234ef54
[task 2021-12-23T14:38:16.721Z] 14:38:16     INFO -     Found by: previous frame's frame pointer
[task 2021-12-23T14:38:16.721Z] 14:38:16     INFO -  6  xul.dll + 0x14460e3
[task 2021-12-23T14:38:16.721Z] 14:38:16     INFO -     eip = 0x595060e4   esp = 0x0234ef5c   ebp = 0x0234f3f4
[task 2021-12-23T14:38:16.721Z] 14:38:16     INFO -     Found by: previous frame's frame pointer
[task 2021-12-23T14:38:16.721Z] 14:38:16     INFO -  7  xul.dll + 0x11716f7
[task 2021-12-23T14:38:16.721Z] 14:38:16     INFO -     eip = 0x592316f8   esp = 0x0234f3fc   ebp = 0x0234f540
[task 2021-12-23T14:38:16.721Z] 14:38:16     INFO -     Found by: previous frame's frame pointer
[task 2021-12-23T14:38:16.721Z] 14:38:16     INFO -  8  xul.dll + 0xa96fbd
[task 2021-12-23T14:38:16.721Z] 14:38:16     INFO -     eip = 0x58b56fbe   esp = 0x0234f548   ebp = 0x0234f738
[task 2021-12-23T14:38:16.721Z] 14:38:16     INFO -     Found by: previous frame's frame pointer
[task 2021-12-23T14:38:16.721Z] 14:38:16     INFO -  9  xul.dll + 0xa967a1
[task 2021-12-23T14:38:16.721Z] 14:38:16     INFO -     eip = 0x58b567a2   esp = 0x0234f740   ebp = 0x0234f7fc
[task 2021-12-23T14:38:16.722Z] 14:38:16     INFO -     Found by: previous frame's frame pointer
[task 2021-12-23T14:38:16.722Z] 14:38:16     INFO - 10  xul.dll + 0xa9d048
[task 2021-12-23T14:38:16.722Z] 14:38:16     INFO -     eip = 0x58b5d049   esp = 0x0234f804   ebp = 0x0234f824
[task 2021-12-23T14:38:16.722Z] 14:38:16     INFO -     Found by: previous frame's frame pointer
[task 2021-12-23T14:38:16.722Z] 14:38:16     INFO - 11  xul.dll + 0x14f1f73
[task 2021-12-23T14:38:16.722Z] 14:38:16     INFO -     eip = 0x595b1f74   esp = 0x0234f82c   ebp = 0x0234fad4
[task 2021-12-23T14:38:16.722Z] 14:38:16     INFO -     Found by: previous frame's frame pointer
[task 2021-12-23T14:38:16.722Z] 14:38:16     INFO - 12  xul.dll + 0x14f05ca
[task 2021-12-23T14:38:16.722Z] 14:38:16     INFO -     eip = 0x595b05cb   esp = 0x0234fadc   ebp = 0x0234fb0c
[task 2021-12-23T14:38:16.722Z] 14:38:16     INFO -     Found by: previous frame's frame pointer
[task 2021-12-23T14:38:16.722Z] 14:38:16     INFO - 13  xul.dll + 0x8a82ce
[task 2021-12-23T14:38:16.722Z] 14:38:16     INFO -     eip = 0x589682cf   esp = 0x0234fb14   ebp = 0x0234fb44
[task 2021-12-23T14:38:16.722Z] 14:38:16     INFO -     Found by: previous frame's frame pointer
[task 2021-12-23T14:38:16.722Z] 14:38:16     INFO - 14  xul.dll + 0x1dbbe
[task 2021-12-23T14:38:16.722Z] 14:38:16     INFO -     eip = 0x580ddbbf   esp = 0x0234fb4c   ebp = 0x0234fb68
[task 2021-12-23T14:38:16.722Z] 14:38:16     INFO -     Found by: previous frame's frame pointer
[task 2021-12-23T14:38:16.722Z] 14:38:16     INFO - 15  xul.dll + 0x764afc
[task 2021-12-23T14:38:16.723Z] 14:38:16     INFO -     eip = 0x58824afd   esp = 0x0234fb70   ebp = 0x0234fc48
[task 2021-12-23T14:38:16.723Z] 14:38:16     INFO -     Found by: previous frame's frame pointer
[task 2021-12-23T14:38:16.723Z] 14:38:16     INFO - 16  nss3.dll!_PR_NativeRunThread(void*) [pruthr.c:caa506569012b215d72c19cf528dbee496f7fc39 : 399 + 0x10]
[task 2021-12-23T14:38:16.723Z] 14:38:16     INFO -     eip = 0x6b1ba620   esp = 0x0234fc50   ebp = 0x0234fc7c
[task 2021-12-23T14:38:16.723Z] 14:38:16     INFO -     Found by: previous frame's frame pointer
[task 2021-12-23T14:38:16.723Z] 14:38:16     INFO - 17  nss3.dll!pr_root(void*) [w95thred.c:caa506569012b215d72c19cf528dbee496f7fc39 : 139 + 0xe]
[task 2021-12-23T14:38:16.723Z] 14:38:16     INFO -     eip = 0x6b1d0b26   esp = 0x0234fc84   ebp = 0x0234fc8c   ebx = 0x0042aeb8
[task 2021-12-23T14:38:16.723Z] 14:38:16     INFO -     esi = 0x0f651d60   edi = 0x0042aeb8
[task 2021-12-23T14:38:16.723Z] 14:38:16     INFO -     Found by: call frame info
[task 2021-12-23T14:38:16.723Z] 14:38:16     INFO - 18  ucrtbase.dll!thread_start<unsigned int (__stdcall*)(void *)> + 0x3e
[task 2021-12-23T14:38:16.723Z] 14:38:16     INFO -     eip = 0x6acee16f   esp = 0x0234fc94   ebp = 0x0234fcc8   ebx = 0x0042aeb8
[task 2021-12-23T14:38:16.723Z] 14:38:16     INFO -     esi = 0x6b1d0b10   edi = 0x0042aeb8
[task 2021-12-23T14:38:16.723Z] 14:38:16     INFO -     Found by: call frame info
[task 2021-12-23T14:38:16.723Z] 14:38:16     INFO - 19  kernel32.dll!BaseThreadInitThunk + 0x11
[task 2021-12-23T14:38:16.723Z] 14:38:16     INFO -     eip = 0x76d6ef3c   esp = 0x0234fcd0   ebp = 0x0234fcd4   ebx = 0x0042aeb8
[task 2021-12-23T14:38:16.723Z] 14:38:16     INFO -     esi = 0x6b1d0b10   edi = 0x0042aeb8
[task 2021-12-23T14:38:16.723Z] 14:38:16     INFO -     Found by: call frame info
[task 2021-12-23T14:38:16.724Z] 14:38:16     INFO - 20  mozglue.dll!patched_BaseThreadInitThunk(int, void*, void*) [WindowsDllBlocklist.cpp:caa506569012b215d72c19cf528dbee496f7fc39 : 570 + 0x14]
[task 2021-12-23T14:38:16.724Z] 14:38:16     INFO -     eip = 0x6af7d3f8   esp = 0x0234fcdc   ebp = 0x0234fd10   ebx = 0x0042aeb8
[task 2021-12-23T14:38:16.724Z] 14:38:16     INFO -     esi = 0x6b1d0b10   edi = 0x0042aeb8
[task 2021-12-23T14:38:16.724Z] 14:38:16     INFO -     Found by: call frame info
[task 2021-12-23T14:38:16.724Z] 14:38:16     INFO - 21  ntdll.dll!__RtlUserThreadStart + 0x26
[task 2021-12-23T14:38:16.724Z] 14:38:16     INFO -     eip = 0x776a3618   esp = 0x0234fd18   ebp = 0x0234fd50   ebx = 0x0042aeb8
[task 2021-12-23T14:38:16.724Z] 14:38:16     INFO -     esi = 0x00000000   edi = 0x00000000
[task 2021-12-23T14:38:16.724Z] 14:38:16     INFO -     Found by: call frame info
[task 2021-12-23T14:38:16.724Z] 14:38:16     INFO - 22  ntdll.dll!_RtlUserThreadStart + 0x1a
[task 2021-12-23T14:38:16.724Z] 14:38:16     INFO -     eip = 0x776a35eb   esp = 0x0234fd58   ebp = 0x0234fd68   ebx = 0x0042aeb8
[task 2021-12-23T14:38:16.724Z] 14:38:16     INFO -     esi = 0x00000000   edi = 0x00000000
[task 2021-12-23T14:38:16.724Z] 14:38:16     INFO -     Found by: call frame info
[task 2021-12-23T14:38:16.724Z] 14:38:16     INFO - 
[task 2021-12-23T14:38:16.724Z] 14:38:16     INFO - Thread 0 
[task 2021-12-23T14:38:16.724Z] 14:38:16     INFO -  0  ntdll.dll!KiFastSystemCallRet + 0x0

```