564961 - firefox Crash [@ md_UnlockAndPostNotifies ]

Status: RESOLVED DUPLICATE of bug 563847

(Core Graveyard :: Plug-ins, defect)

Description

[chris hofmann]

#18 in 3.6.4 crash data from 2010 05 09

signature has been around for awhile but its higher than expected frequency in 3.6.4

              md_UnlockAndPostNotifies crashes
                         pct.
all     349466  52      0.000148798
3.6.3   241771  29      0.000119948
3.6.4   19742   17      0.000861108
3.5.9   32345   3       9.275e-05
3.0.15  449     2       0.00445434
3.0.19  10645   1       9.39408e-05

os breakdown
md_UnlockAndPostNotifiesTotal 52
Win5.1  0.62
Win6.0  0.12
Win6.1  0.27

flash versions around at time of crash
  24 10.0.45.2
  17 [blank]
   9 10.0.32.18
   1 10.0.2.54
   1 10.0.12.36


http://crash-stats.mozilla.com/report/index/cf6c9783-d1e2-4b44-bdd2-86fb62100510

Frame  	Module  	Signature [Expand]  	Source
0 	nspr4.dll 	md_UnlockAndPostNotifies 	nsprpub/pr/src/md/windows/w95cv.c:144
1 	nspr4.dll 	_PR_MD_UNLOCK 	nsprpub/pr/src/md/windows/w95cv.c:342
2 	nspr4.dll 	PR_Unlock 	nsprpub/pr/src/threads/combined/prulock.c:347
3 	xul.dll 	mozilla::Mutex::Unlock 	obj-firefox/dist/include/mozilla/Mutex.h:112
4 	mozcrt19.dll 	_CallSettingFrame 	lowhelpr.asm:71
5 	mozcrt19.dll 	__FrameUnwindToState 	frame.cpp:1145

more at

http://crash-stats.mozilla.com/report/list?version=Firefox%3A3.6.4&signature=md_UnlockAndPostNotifies

Comment 1

[Benjamin Smedberg]

This is basically a dup of bug 563847

>	nspr4.dll!md_UnlockAndPostNotifies(lock=0x026ee064, waitThred=0x00000000, waitCV=0x00000000)  Line 124	C
 	nspr4.dll!_PR_MD_UNLOCK(lock=0x026ee064)  Line 342	C
 	nspr4.dll!PR_Unlock(lock=0x026ee048)  Line 347	C
 	xul.dll!mozilla::Mutex::Unlock()  Line 112	C++
 	mozcrt19.dll!_CallSettingFrame(funclet=0x00f3fcb0, pRN=0x00000103, dwInCode=0x4fd972a8)  Line 73	Asm
 	mozcrt19.dll!__FrameUnwindToState(pRN=0x00f3fcb0, pDC=0x00f3f568, pFuncInfo=0x65c87750, targetState=0xffffffff)  Line 1149	C++
 	mozcrt19.dll!__InternalCxxFrameHandler(pExcept=0x00f3f4c8, pRN=0x00f3fcb0, pContext=0x00f3f574, pDC=0x00f3f568, pFuncInfo=0x65c87750, CatchDepth=0x00000000, pMarkerRN=0x00000000, recursive=0x00)  Line 479	C++
 	mozcrt19.dll!__CxxFrameHandler3(pExcept=0x00f3fcb0, pRN=0x00f3f574, pContext=0x00f3f568, pDC=0x00f3fcb0)  Line 311	C++
 	ntdll.dll!ExecuteHandler2@20() 	
 	ntdll.dll!ExecuteHandler@20() 	
 	ntdll.dll!@_EH4_GlobalUnwind@4() 	
 	ntdll.dll!__except_handler4() 	
 	ntdll.dll!ExecuteHandler2@20() 	
 	ntdll.dll!ExecuteHandler@20() 	
 	ntdll.dll!_KiUserExceptionDispatcher@8() 	
 	xul.dll!nsTArray<nsFtpProtocolHandler::timerStruct *>::IndexOf<void *,nsDefaultComparator<nsFtpProtocolHandler::timerStruct *,void *> >(item=0x00514a00, start=0x6591795a, comp={...})  Line 391	C++
 	xul.dll!nsTArray<txStylesheetCompiler *>::RemoveElement<txStylesheetCompiler *,nsDefaultComparator<txStylesheetCompiler *,txStylesheetCompiler *> >(item=0x00514a00, comp={...})  Line 685	C++
 	xul.dll!mozilla::plugins::ChildAsyncCall::RemoveFromAsyncList()  Line 69	C++
 	xul.dll!mozilla::plugins::PluginInstanceChild::FlashThrottleAsyncMsg::Run()  Line 1371	C++