Closed Issue: INVALID_POINTER_READ_CODE_c0000005_casablanca110.dll!ILT [13]

It appears to be a race condition because this call was done after casablanca110.dll is unloaded. I was trying to detect memory leak using umdh command so I simply added a breakpoint to FreeLibrary. I was running my unit test using SDK's unittestpp's TestRunner.exe. So on the last FreeLibrary where TestRunner says everything is done (a bit after that) I reached this exception. I loaded back the DLL to see which API it was. If I run the test without breakpoint there is no exception. All my modules are unloaded already (no stack touching my own code)

FAULTING_IP:
casablanca110!ILT+26725(?completion_callbackwinhttp_clientdetailsclienthttpwebCAXPEAX_KK0KZ)+0
000007fe`d58a786a ?? ???

EXCEPTION_RECORD: ffffffffffffffff -- (.exr 0xffffffffffffffff)
ExceptionAddress: 000007fed58a786a (casablanca110!ILT+26725(?completion_callbackwinhttp_clientdetailsclienthttpwebCAXPEAX_KK0KZ))
ExceptionCode: c0000005 (Access violation)
ExceptionFlags: 00000000
NumberParameters: 2
Parameter[0]: 0000000000000008
Parameter[1]: 000007fed58a786a
Attempt to execute non-executable address 000007fed58a786a

FAULTING_THREAD: 0000000000000c90

PROCESS_NAME: TestRunner.exe

ERROR_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%08lx referenced memory at 0x%08lx. The memory could not be %s.

EXCEPTION_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%08lx referenced memory at 0x%08lx. The memory could not be %s.

EXCEPTION_PARAMETER1: 0000000000000008

EXCEPTION_PARAMETER2: 000007fed58a786a

WRITE_ADDRESS: 000007fed58a786a

FOLLOWUP_IP:
casablanca110!ILT+26725(?completion_callbackwinhttp_clientdetailsclienthttpwebCAXPEAX_KK0KZ)+0
000007fe`d58a786a ?? ???

MOD_LIST: <ANALYSIS/>

NTGLOBALFLAG: 92300000

APPLICATION_VERIFIER_FLAGS: 0

BUGCHECK_STR: APPLICATION_FAULT_INVALID_POINTER_READ_SOFTWARE_NX_FAULT_CODE

PRIMARY_PROBLEM_CLASS: INVALID_POINTER_READ_CODE

DEFAULT_BUCKET_ID: INVALID_POINTER_READ_CODE

LAST_CONTROL_TRANSFER: from 000007fef93a49fb to 000007fed58a786a

STACK_TEXT:
00000000`0527f798 000007fe`f93a49fb : 00000000`05bc0c80 00000000`05bc0c80 00000000`01a00000 00000000`00000007 : casablanca110!ILT+26725(?completion_callbackwinhttp_clientdetailsclienthttpwebCAXPEAX_KK0KZ)
00000000`0527f7a0 000007fe`f93a48eb : 00000000`00000000 00000000`0628ff10 00000000`00000000 00000000`06021f80 : WINHTTP!HTTP_REQUEST_HANDLE_OBJECT::_SafeAppCallback+0x14f
00000000`0527f830 000007fe`f93a488c : 00000000`00000000 00000000`05e65cc0 00000000`00000000 00000000`06021f80 : WINHTTP!HTTP_REQUEST_HANDLE_OBJECT::_ControlledAppCallback+0x5d
00000000`0527f860 000007fe`f9396ec7 : 00000000`00000000 00000000`00000007 00000000`026fdf70 00000000`76f6699f : WINHTTP!HTTP_REQUEST_HANDLE_OBJECT::IndicateCompletionStatusCommon+0x6e
00000000`0527f8a0 000007fe`f93adbc3 : 00000000`06042f50 00000000`00000007 00000000`00000000 000007fe`f93914c7 : WINHTTP!HTTP_USER_REQUEST::_IndicateIoCompletion+0x12e
00000000`0527f8f0 000007fe`f93adafb : 00000000`06042f50 00000000`00000007 00000000`00000000 00000000`00000007 : WINHTTP!HTTP_USER_REQUEST::_OnAsyncQueryDataAvailable+0xc7
00000000`0527f920 000007fe`f9397012 : 00000000`00000000 00000000`05d9bea8 00000000`00000000 00000000`0527fb98 : WINHTTP!HTTP_USER_REQUEST::OnReadData+0x82
00000000`0527f970 000007fe`f9391b40 : 00000000`00000007 00000000`00000000 80000000`00000000 00000000`029d2fc0 : WINHTTP!WEBIO_REQUEST::OnIoComplete+0x184
00000000`0527f9d0 00000000`76f62484 : 00000000`029d2f10 00000000`029d2f10 00000000`00000000 00000000`029d2fc0 : WINHTTP!HTTP_THREAD_POOL::_WorkItemCallback+0xfd
00000000`0527fa30 00000000`76f66bd2 : 00000000`770545e8 00000000`06132f98 00000000`770545c0 00000000`77054610 : ntdll!TppWorkpExecuteCallback+0xa4
00000000`0527fa90 00000000`76d4652d : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : ntdll!TppWorkerThread+0x6c9
00000000`0527fd90 00000000`76f7c521 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : kernel32!BaseThreadInitThunk+0xd
00000000`0527fdc0 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : ntdll!RtlUserThreadStart+0x1d


SYMBOL_STACK_INDEX: 0

SYMBOL_NAME: casablanca110!ILT+26725

FOLLOWUP_NAME: MachineOwner

MODULE_NAME: casablanca110

IMAGE_NAME: casablanca110.dll

DEBUG_FLR_IMAGE_TIMESTAMP: 51930804

STACK_COMMAND: ~15s ; kb

FAILURE_BUCKET_ID: INVALID_POINTER_READ_CODE_c0000005_casablanca110.dll!ILT

BUCKET_ID: X64_APPLICATION_FAULT_INVALID_POINTER_READ_SOFTWARE_NX_FAULT_CODE_casablanca110!ILT+26725

Followup: MachineOwner
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