460403 - "ASSERTION: null monitor: 'mMonitor'" when shutting down Thunderbird with Lightning

Status: RESOLVED WORKSFORME

(Calendar :: General, defect)

Description

[Gary Kwong [:gkw] [:nth10sd] (NOT official MoCo now)]

###!!! ASSERTION: null monitor: 'mMonitor', file ../../dist/include/xpcom/nsAutoLock.h, line 310

nsAutoMonitor::~nsAutoMonitor()+0x00000049 [/Users/skywalker/objdir-tb/mozilla/dist/ShredderDebug.app/Contents/MacOS/./libxpcom_core.dylib +0x00051DA9]
NS_InvokeByIndex_P+0x0000784F [/Users/skywalker/objdir-tb/mozilla/dist/ShredderDebug.app/Contents/MacOS/./libxpcom_core.dylib +0x000A98E1]
nsXPCOMCycleCollectionParticipant::nsXPCOMCycleCollectionParticipant()+0x00003664 [/Users/skywalker/objdir-tb/mozilla/dist/ShredderDebug.app/Contents/MacOS/components/libxpconnect.dylib +0x0004504E]
nsXPCOMCycleCollectionParticipant::nsXPCOMCycleCollectionParticipant()+0x00002D2B [/Users/skywalker/objdir-tb/mozilla/dist/ShredderDebug.app/Contents/MacOS/components/libxpconnect.dylib +0x00044715]
nsTArray_base::GetAutoArrayBuffer()+0x00002484 [/Users/skywalker/objdir-tb/mozilla/dist/ShredderDebug.app/Contents/MacOS/components/libxpconnect.dylib +0x000409B4]
nsTArray_base::GetAutoArrayBuffer()+0x00002609 [/Users/skywalker/objdir-tb/mozilla/dist/ShredderDebug.app/Contents/MacOS/components/libxpconnect.dylib +0x00040B39]
nsTArray_base::GetAutoArrayBuffer()+0x000018B7 [/Users/skywalker/objdir-tb/mozilla/dist/ShredderDebug.app/Contents/MacOS/components/libxpconnect.dylib +0x0003FDE7]
NS_RegisterMemoryReporter(nsIMemoryReporter*)+0x00000862 [/Users/skywalker/objdir-tb/mozilla/dist/ShredderDebug.app/Contents/MacOS/./libxpcom_core.dylib +0x000A1D24]
operator new(unsigned long, void*)+0x000083D8 [/Users/skywalker/objdir-tb/mozilla/dist/ShredderDebug.app/Contents/MacOS/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103}/components/libcalbasecomps.dylib +0x000164FC]
operator new(unsigned long, void*)+0x0000733D [/Users/skywalker/objdir-tb/mozilla/dist/ShredderDebug.app/Contents/MacOS/extensions/{e2fda1a4-762b-4020-b5ad-a41df1933103}/components/libcalbasecomps.dylib +0x00015461]
__cxa_finalize+0x000000F1 [/usr/lib/libSystem.B.dylib +0x00029FDC]
exit+0x00000021 [/usr/lib/libSystem.B.dylib +0x00029ED0]
start+0x0000010A [/Users/skywalker/objdir-tb/mozilla/dist/ShredderDebug.app/Contents/MacOS/./thunderbird-bin +0x00001086]
start+0x00000029 [/Users/skywalker/objdir-tb/mozilla/dist/ShredderDebug.app/Contents/MacOS/./thunderbird-bin +0x00000FA5]


This assertion gets hit when shutting down Thunderbird, contributing to extra noise on shutdown. It didn't show prior to the landing of Calendar on comm-central, though it could be core changes that caused this bug.

I compiled debug Thunderbird on Mac with Lightning enabled. 10.5.5.

Comment 1

[Gary Kwong [:gkw] [:nth10sd] (NOT official MoCo now)]

This occurs not with a fresh profile, but rather a profile from nightlies from last week _without_ Lightning.

Disabling Lightning on this build makes the assertion go away.

Comment 2

[Dan Mosedale (:dmosedale, :dmose)]

Since we're not aware of any bad concrete consequences here, this bug currently won't block.  That said, it would be interested in knowing if it still happens, given some recent fixes that have gone in.

Comment 3

[Gary Kwong [:gkw] [:nth10sd] (NOT official MoCo now)]

No longer occurs. WFM.