Bug: Intermittent browser/components/preferences/tests/browser_subdialogs.js | application crashed [@ mozalloc_handle_oom(unsigned int)]
Status: RESOLVED
Priority: --
Resolution: DUPLICATE
Created: 2021-08-03 06:30:50+00:00
Resolved: 2021-08-09 06:19:20+00:00

**Filed by:** abutkovits [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=347225102&repo=mozilla-central
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/BdplvbI2QGasfgHRW10Mew/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2021-08-03T06:13:28.712Z] 06:13:28     INFO - TEST-PASS | browser/components/preferences/tests/browser_subdialogs.js | dialog count should decrease by 1 - 0 == 0 - 
[task 2021-08-03T06:13:28.712Z] 06:13:28     INFO - TEST-PASS | browser/components/preferences/tests/browser_subdialogs.js | stack children count should decrease by 1 - 1 == 1 - 
[task 2021-08-03T06:13:28.713Z] 06:13:28     INFO - Leaving test bound check_canceling_dialog
[task 2021-08-03T06:13:28.714Z] 06:13:28     INFO - Entering test bound check_reopening_dialog
[task 2021-08-03T06:13:28.714Z] 06:13:28     INFO - waiting for subdialog DOMFrameContentLoaded
[task 2021-08-03T06:13:28.715Z] 06:13:28     INFO - Buffered messages finished
[task 2021-08-03T06:13:28.716Z] 06:13:28    ERROR - TEST-UNEXPECTED-FAIL | browser/components/preferences/tests/browser_subdialogs.js | application terminated with exit code 1
[task 2021-08-03T06:13:28.717Z] 06:13:28     INFO - runtests.py | Application ran for: 0:02:57.407739
[task 2021-08-03T06:13:28.717Z] 06:13:28     INFO - zombiecheck | Reading PID log: C:\Users\task_1627968582\AppData\Local\Temp\tmpt9gb_njepidlog
[task 2021-08-03T06:13:28.719Z] 06:13:28     INFO - ==> process 4900 launched child process 6064 ("Z:\task_1627968582\build\application\firefox\firefox.exe" -contentproc --channel="4900.0.1862549545\67810049" -childID 1 -isForBrowser -prefsHandle 2392 -prefMapHandle 2380 -prefsLen 1 -prefMapSize 252097 -jsInit 944 285704 -parentBuildID 20210803033659 -appdir "Z:\task_1627968582\build\application\firefox\browser" - 4900 "\\.\pipe\gecko-crash-server-pipe.4900" 2436 17ff4108 tab)
[task 2021-08-03T06:13:28.720Z] 06:13:28     INFO - ==> process 4900 launched child process 5012 ("Z:\task_1627968582\build\application\firefox\firefox.exe" -contentproc --channel="4900.1.345013334\1696095372" -childID 2 -isForBrowser -prefsHandle 2764 -prefMapHandle 2760 -prefsLen 184 -prefMapSize 252097 -jsInit 944 285704 -parentBuildID 20210803033659 -appdir "Z:\task_1627968582\build\application\firefox\browser" - 4900 "\\.\pipe\gecko-crash-server-pipe.4900" 2776 1a369798 tab)
[task 2021-08-03T06:13:28.721Z] 06:13:28     INFO - ==> process 4900 launched child process 1600 ("Z:\task_1627968582\build\application\firefox\firefox.exe" -contentproc --channel="4900.2.1514759569\1313274529" -childID 3 -isForBrowser -prefsHandle 2796 -prefMapHandle 2804 -prefsLen 224 -prefMapSize 252097 -jsInit 944 285704 -parentBuildID 20210803033659 -appdir "Z:\task_1627968582\build\application\firefox\browser" - 4900 "\\.\pipe\gecko-crash-server-pipe.4900" 2896 17e1b648 tab)
[task 2021-08-03T06:13:28.723Z] 06:13:28     INFO - ==> process 4900 launched child process 5760 ("Z:\task_1627968582\build\application\firefox\firefox.exe" -contentproc --channel="4900.3.537671454\1300834278" -parentBuildID 20210803033659 -prefsHandle 3148 -prefMapHandle 3144 -prefsLen 1349 -prefMapSize 252097 -appdir "Z:\task_1627968582\build\application\firefox\browser" - 4900 "\\.\pipe\gecko-crash-server-pipe.4900" 3160 153e4698 rdd)
[task 2021-08-03T06:13:28.724Z] 06:13:28     INFO - ==> process 4900 launched child process 4348 ("Z:\task_1627968582\build\application\firefox\firefox.exe" -contentproc --channel="4900.5.452992805\1582894891" -childID 4 -isForBrowser -prefsHandle 3724 -prefMapHandle 3720 -prefsLen 8813 -prefMapSize 252097 -jsInit 944 285704 -parentBuildID 20210803033659 -appdir "Z:\task_1627968582\build\application\firefox\browser" - 4900 "\\.\pipe\gecko-crash-server-pipe.4900" 3744 17e1b4f8 tab)
[task 2021-08-03T06:13:28.725Z] 06:13:28     INFO - ==> process 4900 launched child process 4328 ("Z:\task_1627968582\build\application\firefox\firefox.exe" -contentproc --channel="4900.6.1673602963\1252987169" -childID 5 -isForBrowser -prefsHandle 4028 -prefMapHandle 4016 -prefsLen 9056 -prefMapSize 252097 -jsInit 944 285704 -parentBuildID 20210803033659 -appdir "Z:\task_1627968582\build\application\firefox\browser" - 4900 "\\.\pipe\gecko-crash-server-pipe.4900" 4036 233ec798 tab)
[task 2021-08-03T06:13:28.726Z] 06:13:28     INFO - ==> process 4900 launched child process 2124 ("Z:\task_1627968582\build\application\firefox\firefox.exe" -contentproc --channel="4900.7.1302754631\1949801530" -childID 6 -isForBrowser -prefsHandle 4208 -prefMapHandle 4468 -prefsLen 9346 -prefMapSize 252097 -jsInit 944 285704 -parentBuildID 20210803033659 -appdir "Z:\task_1627968582\build\application\firefox\browser" - 4900 "\\.\pipe\gecko-crash-server-pipe.4900" 4484 20893f78 tab)
[task 2021-08-03T06:13:28.727Z] 06:13:28     INFO - zombiecheck | Checking for orphan process with PID: 1600
[task 2021-08-03T06:13:28.727Z] 06:13:28     INFO - zombiecheck | Checking for orphan process with PID: 5760
[task 2021-08-03T06:13:28.728Z] 06:13:28     INFO - zombiecheck | Checking for orphan process with PID: 4328
[task 2021-08-03T06:13:28.728Z] 06:13:28     INFO - zombiecheck | Checking for orphan process with PID: 2124
[task 2021-08-03T06:13:28.729Z] 06:13:28     INFO - zombiecheck | Checking for orphan process with PID: 6064
[task 2021-08-03T06:13:28.729Z] 06:13:28     INFO - zombiecheck | Checking for orphan process with PID: 5012
[task 2021-08-03T06:13:28.730Z] 06:13:28     INFO - zombiecheck | Checking for orphan process with PID: 4348
[task 2021-08-03T06:13:28.730Z] 06:13:28     INFO - mozcrash Downloading symbols from: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/W6Be9wCfTACvrfytwa5gtg/artifacts/public/build/target.crashreporter-symbols.zip
[task 2021-08-03T06:13:31.895Z] 06:13:31     INFO - mozcrash Copy/paste: Z:/task_1627968582/fetches\minidump_stackwalk\minidump_stackwalk.exe C:\Users\task_1627968582\AppData\Local\Temp\tmpiaombn6a.mozrunner\minidumps\8f965e7c-998f-4ae3-8257-268fcbbaca60.dmp C:\Users\task_1627968582\AppData\Local\Temp\tmpscad6eal
[task 2021-08-03T06:13:38.939Z] 06:13:38     INFO - mozcrash Saved minidump as Z:\task_1627968582\build\blobber_upload_dir\8f965e7c-998f-4ae3-8257-268fcbbaca60.dmp
[task 2021-08-03T06:13:38.944Z] 06:13:38     INFO - mozcrash Saved app info as Z:\task_1627968582\build\blobber_upload_dir\8f965e7c-998f-4ae3-8257-268fcbbaca60.extra
[task 2021-08-03T06:13:39.256Z] 06:13:39     INFO - PROCESS-CRASH | browser/components/preferences/tests/browser_subdialogs.js | application crashed [@ mozalloc_handle_oom(unsigned int)]
[task 2021-08-03T06:13:39.256Z] 06:13:39     INFO - Mozilla crash reason: MOZ_CRASH()
[task 2021-08-03T06:13:39.256Z] 06:13:39     INFO - Crash dump filename: C:\Users\task_1627968582\AppData\Local\Temp\tmpiaombn6a.mozrunner\minidumps\8f965e7c-998f-4ae3-8257-268fcbbaca60.dmp
[task 2021-08-03T06:13:39.256Z] 06:13:39     INFO - Operating system: Windows NT
[task 2021-08-03T06:13:39.256Z] 06:13:39     INFO -                   6.1.7601 Service Pack 1
[task 2021-08-03T06:13:39.256Z] 06:13:39     INFO - CPU: x86
[task 2021-08-03T06:13:39.256Z] 06:13:39     INFO -      GenuineIntel family 6 model 63 stepping 2
[task 2021-08-03T06:13:39.256Z] 06:13:39     INFO -      8 CPUs
[task 2021-08-03T06:13:39.256Z] 06:13:39     INFO - 
[task 2021-08-03T06:13:39.256Z] 06:13:39     INFO - GPU: UNKNOWN
[task 2021-08-03T06:13:39.257Z] 06:13:39     INFO - 
[task 2021-08-03T06:13:39.257Z] 06:13:39     INFO - Crash reason:  EXCEPTION_BREAKPOINT
[task 2021-08-03T06:13:39.257Z] 06:13:39     INFO - Crash address: 0x6b79fa90
[task 2021-08-03T06:13:39.257Z] 06:13:39     INFO - Process uptime: 177 seconds
[task 2021-08-03T06:13:39.257Z] 06:13:39     INFO - 
[task 2021-08-03T06:13:39.257Z] 06:13:39     INFO - Thread 0 (crashed) 0  mozglue.dll!mozalloc_abort(char const* const) [mozalloc_abort.cpp:f077a7402e9c90d3f264c940962f908100f7e967 : 33 + 0x0]
[task 2021-08-03T06:13:39.257Z] 06:13:39     INFO -     eip = 0x6b79fa90   esp = 0x0024e698   ebp = 0x0024e6a4   ebx = 0x6b5cf9b0
[task 2021-08-03T06:13:39.257Z] 06:13:39     INFO -     esi = 0x0024e6b0   edi = 0x00000002   eax = 0x0000000a   ecx = 0x6b5d7af0
[task 2021-08-03T06:13:39.257Z] 06:13:39     INFO -     edx = 0x00000000   efl = 0x00000202
[task 2021-08-03T06:13:39.257Z] 06:13:39     INFO -     Found by: given as instruction pointer in context
[task 2021-08-03T06:13:39.257Z] 06:13:39     INFO -  1  mozglue.dll!mozalloc_handle_oom(unsigned int) [mozalloc_oom.cpp:f077a7402e9c90d3f264c940962f908100f7e967 : 51 + 0x9]
[task 2021-08-03T06:13:39.257Z] 06:13:39     INFO -     eip = 0x6b79fb02   esp = 0x0024e6ac   ebp = 0x0024e6e4   ebx = 0x6cfaa040
[task 2021-08-03T06:13:39.257Z] 06:13:39     INFO -     esi = 0x00000000   edi = 0x00000048
[task 2021-08-03T06:13:39.257Z] 06:13:39     INFO -     Found by: call frame info
[task 2021-08-03T06:13:39.257Z] 06:13:39     INFO -  2  xul.dll + 0x18fc8a9
[task 2021-08-03T06:13:39.257Z] 06:13:39     INFO -     eip = 0x5ab1c8a9   esp = 0x0024e6ec   ebp = 0x0024e6fc
[task 2021-08-03T06:13:39.258Z] 06:13:39     INFO -     Found by: call frame info
[task 2021-08-03T06:13:39.258Z] 06:13:39     INFO -  3  xul.dll + 0x12fdb7
[task 2021-08-03T06:13:39.258Z] 06:13:39     INFO -     eip = 0x5934fdb7   esp = 0x0024e704   ebp = 0x0024e720
[task 2021-08-03T06:13:39.258Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.258Z] 06:13:39     INFO -  4  xul.dll + 0xc6cb22
[task 2021-08-03T06:13:39.258Z] 06:13:39     INFO -     eip = 0x59e8cb22   esp = 0x0024e728   ebp = 0x0024e864
[task 2021-08-03T06:13:39.258Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.258Z] 06:13:39     INFO -  5  xul.dll + 0x193112
[task 2021-08-03T06:13:39.258Z] 06:13:39     INFO -     eip = 0x593b3112   esp = 0x0024e86c   ebp = 0x0024e954
[task 2021-08-03T06:13:39.258Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.258Z] 06:13:39     INFO -  6  xul.dll + 0x107eee5
[task 2021-08-03T06:13:39.258Z] 06:13:39     INFO -     eip = 0x5a29eee5   esp = 0x0024e95c   ebp = 0x0024eb3c
[task 2021-08-03T06:13:39.258Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.258Z] 06:13:39     INFO -  7  xul.dll + 0x107e8eb
[task 2021-08-03T06:13:39.258Z] 06:13:39     INFO -     eip = 0x5a29e8eb   esp = 0x0024eb44   ebp = 0x0024eb80
[task 2021-08-03T06:13:39.258Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.259Z] 06:13:39     INFO -  8  xul.dll + 0xa31a84
[task 2021-08-03T06:13:39.259Z] 06:13:39     INFO -     eip = 0x59c51a84   esp = 0x0024eb88   ebp = 0x0024ebe0
[task 2021-08-03T06:13:39.259Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.259Z] 06:13:39     INFO -  9  xul.dll + 0xa31d42
[task 2021-08-03T06:13:39.259Z] 06:13:39     INFO -     eip = 0x59c51d42   esp = 0x0024ebe8   ebp = 0x0024ebec
[task 2021-08-03T06:13:39.259Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.259Z] 06:13:39     INFO - 10  xul.dll + 0x17f0e7
[task 2021-08-03T06:13:39.259Z] 06:13:39     INFO -     eip = 0x5939f0e7   esp = 0x0024ebf4   ebp = 0x0024eca0
[task 2021-08-03T06:13:39.259Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.259Z] 06:13:39     INFO - 11  xul.dll + 0x19244d
[task 2021-08-03T06:13:39.259Z] 06:13:39     INFO -     eip = 0x593b244d   esp = 0x0024eca8   ebp = 0x0024ecb8
[task 2021-08-03T06:13:39.259Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.259Z] 06:13:39     INFO - 12  xul.dll + 0x191bdb
[task 2021-08-03T06:13:39.259Z] 06:13:39     INFO -     eip = 0x593b1bdb   esp = 0x0024ecc0   ebp = 0x0024ed1c
[task 2021-08-03T06:13:39.259Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.259Z] 06:13:39     INFO - 13  xul.dll + 0x915e93
[task 2021-08-03T06:13:39.259Z] 06:13:39     INFO -     eip = 0x59b35e93   esp = 0x0024ed24   ebp = 0x0024ed4c
[task 2021-08-03T06:13:39.259Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.260Z] 06:13:39     INFO - 14  xul.dll + 0x91d984
[task 2021-08-03T06:13:39.260Z] 06:13:39     INFO -     eip = 0x59b3d984   esp = 0x0024ed54   ebp = 0x0024ed6c
[task 2021-08-03T06:13:39.260Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.260Z] 06:13:39     INFO - 15  xul.dll + 0x7c99ef
[task 2021-08-03T06:13:39.260Z] 06:13:39     INFO -     eip = 0x599e99ef   esp = 0x0024ed74   ebp = 0x0024ed84
[task 2021-08-03T06:13:39.260Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.260Z] 06:13:39     INFO - 16  xul.dll + 0x185ea51
[task 2021-08-03T06:13:39.260Z] 06:13:39     INFO -     eip = 0x5aa7ea51   esp = 0x0024ed8c   ebp = 0x0024f468
[task 2021-08-03T06:13:39.260Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.260Z] 06:13:39     INFO - 17  xul.dll + 0x1549e3e
[task 2021-08-03T06:13:39.260Z] 06:13:39     INFO -     eip = 0x5a769e3e   esp = 0x0024f470   ebp = 0x0024f714
[task 2021-08-03T06:13:39.260Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.260Z] 06:13:39     INFO - 18  xul.dll + 0x18866f1
[task 2021-08-03T06:13:39.260Z] 06:13:39     INFO -     eip = 0x5aaa66f1   esp = 0x0024f71c   ebp = 0x0024f7c4
[task 2021-08-03T06:13:39.260Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.260Z] 06:13:39     INFO - 19  xul.dll + 0x924b4f
[task 2021-08-03T06:13:39.260Z] 06:13:39     INFO -     eip = 0x59b44b4f   esp = 0x0024f7cc   ebp = 0x0024f7fc
[task 2021-08-03T06:13:39.261Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.261Z] 06:13:39     INFO - 20  xul.dll + 0x209df
[task 2021-08-03T06:13:39.261Z] 06:13:39     INFO -     eip = 0x592409df   esp = 0x0024f804   ebp = 0x0024f820
[task 2021-08-03T06:13:39.261Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.261Z] 06:13:39     INFO - 21  xul.dll + 0x162795
[task 2021-08-03T06:13:39.261Z] 06:13:39     INFO -     eip = 0x59382795   esp = 0x0024f828   ebp = 0x0024f830
[task 2021-08-03T06:13:39.261Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.261Z] 06:13:39     INFO - 22  xul.dll + 0x161c88
[task 2021-08-03T06:13:39.261Z] 06:13:39     INFO -     eip = 0x59381c88   esp = 0x0024f838   ebp = 0x0024f96c
[task 2021-08-03T06:13:39.261Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.261Z] 06:13:39     INFO - 23  xul.dll + 0x3de3187
[task 2021-08-03T06:13:39.261Z] 06:13:39     INFO -     eip = 0x5d003187   esp = 0x0024f974   ebp = 0x0024f98c
[task 2021-08-03T06:13:39.261Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.261Z] 06:13:39     INFO - 24  xul.dll + 0x3e45706
[task 2021-08-03T06:13:39.261Z] 06:13:39     INFO -     eip = 0x5d065706   esp = 0x0024f994   ebp = 0x0024fc24
[task 2021-08-03T06:13:39.262Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.262Z] 06:13:39     INFO - 25  xul.dll + 0x3e4625a
[task 2021-08-03T06:13:39.262Z] 06:13:39     INFO -     eip = 0x5d06625a   esp = 0x0024fc2c   ebp = 0x0024fc74
[task 2021-08-03T06:13:39.262Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.262Z] 06:13:39     INFO - 26  xul.dll + 0x1d499e6
[task 2021-08-03T06:13:39.262Z] 06:13:39     INFO -     eip = 0x5af699e6   esp = 0x0024fc7c   ebp = 0x0024fd38
[task 2021-08-03T06:13:39.262Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.262Z] 06:13:39     INFO - 27  xul.dll + 0x3e4be01
[task 2021-08-03T06:13:39.262Z] 06:13:39     INFO -     eip = 0x5d06be01   esp = 0x0024fd40   ebp = 0x0024fd4c
[task 2021-08-03T06:13:39.262Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.262Z] 06:13:39     INFO - 28  firefox.exe!wmain(int, wchar_t**) [nsWindowsWMain.cpp:f077a7402e9c90d3f264c940962f908100f7e967 : 138 + 0x1c3]
[task 2021-08-03T06:13:39.262Z] 06:13:39     INFO -     eip = 0x010d77e9   esp = 0x0024fd54   ebp = 0x0024fee4
[task 2021-08-03T06:13:39.262Z] 06:13:39     INFO -     Found by: previous frame's frame pointer
[task 2021-08-03T06:13:39.262Z] 06:13:39     INFO - 29  firefox.exe!__scrt_common_main_seh() [exe_common.inl : 288 + 0x1c]
[task 2021-08-03T06:13:39.262Z] 06:13:39     INFO -     eip = 0x010e791c   esp = 0x0024feec   ebp = 0x0024ff2c   ebx = 0x7ffd5000
[task 2021-08-03T06:13:39.262Z] 06:13:39     INFO -     esi = 0x6b6af0b0   edi = 0x0040f388
[task 2021-08-03T06:13:39.262Z] 06:13:39     INFO -     Found by: call frame info
[task 2021-08-03T06:13:39.263Z] 06:13:39     INFO - 30  kernel32.dll!BaseThreadInitThunk + 0x12
[task 2021-08-03T06:13:39.263Z] 06:13:39     INFO -     eip = 0x762fef3c   esp = 0x0024ff34   ebp = 0x0024ff38
[task 2021-08-03T06:13:39.263Z] 06:13:39     INFO -     Found by: call frame info
[task 2021-08-03T06:13:39.263Z] 06:13:39     INFO - 31  ntdll.dll!BaseCheckVDMp + 0x8ff
[task 2021-08-03T06:13:39.263Z] 06:13:39     INFO -     eip = 0x77b73618   esp = 0x0024ff40   ebp = 0x0024ff78
[task 2021-08-03T06:13:39.263Z] 06:13:39     INFO -     Found by: call frame info
[task 2021-08-03T06:13:39.263Z] 06:13:39     INFO - 32  ntdll.dll!BaseCheckVDMp + 0x8d2
[task 2021-08-03T06:13:39.263Z] 06:13:39     INFO -     eip = 0x77b735eb   esp = 0x0024ff80   ebp = 0x0024ff90
[task 2021-08-03T06:13:39.263Z] 06:13:39     INFO -     Found by: call frame info
```