392895 - Confusing "access violation writing location", when exiting JAWS with Firefox running

Status: RESOLVED WORKSFORME

(Core :: Disability Access APIs, defect)

Description

[Aaron Leventhal]

1) Launch the JAWS screen reader
2) Run Firefox in Visual Studio
3) Try to exit Firefox

You will get this crash:
First-chance exception at 0x03a24bfa in firefox.exe: 0xC0000005: Access violation writing location 0x8007ef50.

At this stack:
> kernel32.dll!_RaiseException@16()  + 0x53 bytes 
  rpcrt4.dll!_RpcpRaiseException@4()  + 0x21 bytes  
  rpcrt4.dll!_NdrProxySendReceive@8()  + 0x112c bytes 
  rpcrt4.dll!_NdrClientCall2()  + 0x9dc bytes 
  rpcrt4.dll!_ObjectStublessClient@8()  + 0x5d bytes  
  rpcrt4.dll!_ObjectStubless@0()  + 0xf bytes 
  FsDomSrv.dll!058d95b7()   
  [Frames below may be incorrect and/or missing, no symbols loaded for FsDomSrv.dll]  
  FsDomSrv.dll!058c2933()   
  FsDomSrv.dll!058dcb07()   
  FsDomSrv.dll!058dcb4d()   
  FsDomSrv.dll!058dcb3f()   
  ole32.dll!CStdIdentity::ReleaseCtrlUnk()  + 0x46 bytes  
  ole32.dll!CStdMarshal::Disconnect()  + 0x1d6 bytes  
  ole32.dll!CStdMarshal::HandlePendingDisconnect()  + 0x461c bytes  
  ole32.dll!CRemoteUnknown::RemReleaseWorker()  + 0x155 bytes 
  ole32.dll!CRemoteUnknown::RemRelease()  + 0x15 bytes  
  rpcrt4.dll!_Invoke@12()  + 0x30 bytes 
  rpcrt4.dll!_NdrStubCall2@16()  + 0x215 bytes  
  rpcrt4.dll!_CStdStubBuffer_Invoke@12()  + 0x82 bytes  
  ole32.dll!SyncStubInvoke()  + 0x33 bytes  
  ole32.dll!StubInvoke()  + 0x73 bytes  
  ole32.dll!CCtxComChnl::ContextInvoke()  + 0xd2 bytes  
  ole32.dll!MTAInvoke()  + 0x1a bytes 
  ole32.dll!STAInvoke()  + 0x4e bytes 
  ole32.dll!AppInvoke()  + 0x3a0 bytes  
  ole32.dll!ComInvokeWithLockAndIPID()  + 0x23d bytes 
  ole32.dll!ComInvoke()  + 0x5a bytes 
  ole32.dll!ThreadDispatch()  + 0x1a bytes  
  ole32.dll!ThreadWndProc()  + 0x93 bytes 
  user32.dll!_InternalCallWinProc@20()  + 0x28 bytes  
  user32.dll!_UserCallWinProcCheckWow@32()  + 0xb7 bytes  
  user32.dll!_DispatchMessageWorker@8()  + 0xdc bytes 
  user32.dll!_DispatchMessageW@4()  + 0xf bytes 
  gkwidget.dll!nsAppShell::ProcessNextNativeEvent(int mayWait=0x00000001)  Line 149 C++
  gkwidget.dll!nsBaseAppShell::DoProcessNextNativeEvent(int mayWait=0x00000001)  Line 137 + 0x11 bytes  C++
  gkwidget.dll!nsBaseAppShell::OnProcessNextEvent(nsIThreadInternal * thr=0x00d8ff70, int mayWait=0x00000001, unsigned int recursionDepth=0x00000000)  Line 247 + 0xf bytes C++
  xpcom_core.dll!nsThread::ProcessNextEvent(int mayWait=0x00000001, int * result=0x0012fa00)  Line 480  C++
  xpcom_core.dll!NS_ProcessNextEvent_P(nsIThread * thread=0x00d8ff70, int mayWait=0x00000001)  Line 227 + 0x16 bytes  C++
  gkwidget.dll!nsBaseAppShell::Run()  Line 154 + 0xc bytes  C++
  tkitcmps.dll!nsAppStartup::Run()  Line 170 + 0x1c bytes C++
  xul.dll!XRE_main(int argc=0x00000004, char * * argv=0x00d8af30, const nsXREAppData * aAppData=0x00d8b398)  Line 3060 + 0x25 bytes C++
  firefox.exe!main(int argc=0x00000004, char * * argv=0x00d8af30)  Line 153 + 0x12 bytes  C++
  firefox.exe!__tmainCRTStartup()  Line 586 + 0x19 bytes  C
  firefox.exe!mainCRTStartup()  Line 403  C
  kernel32.dll!_BaseProcessStart@4()  + 0x23 bytes

Comment 1

[Aaron Leventhal]

Step 3 was wrong, it should say:
3. Exit JAWS (Insert+F4)

Comment 2

[Aaron Leventhal]

Before the access violation I get:
"First-chance exception at 0x7c812a5b (kernel32.dll) in firefox.exe: 0x80010108: The object invoked has disconnected from its clients."

The exception's code matches RPC_E_DISCONNECTED. I haven't found anything useful about it by searching the net.

This only happens when you run in the debugger. Therefore, not a blocker.

Comment 3

[Damon Sicore (:damons)]

Per comment #2, -'ing.

Comment 4

[David Bolter [:davidb] (NeedInfo me for attention)]

Mass un-assigning bugs assigned to Aaron.

Comment 5

[Trevor Saunders (:tbsaunde)]

Is thisstill a problem?

Comment 6

[alexander :surkov (:asurkov)]

I've never seen a problem and can't see it on trunk.