2: kd> !analyze -v ******************************************************************************* * * * Bugcheck Analysis * * * ******************************************************************************* KMODE_EXCEPTION_NOT_HANDLED (1e) This is a very common bugcheck. Usually the exception address pinpoints the driver/function that caused the problem. Always note this address as well as the link date of the driver/image that contains this address. Arguments: Arg1: c0000005, The exception code that was not handled Arg2: 8ffc58c9, The address that the exception occurred at Arg3: 00000000, Parameter 0 of the exception Arg4: 00000004, Parameter 1 of the exception Debugging Details: ------------------ READ_ADDRESS: 00000004 EXCEPTION_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%08lx referenced memory at 0x%08lx. The memory could not be %s. FAULTING_IP: isstrtc+138c9 8ffc58c9 f6400402 test byte ptr [eax+4],2 EXCEPTION_PARAMETER2: 00000004 BUGCHECK_STR: 0x1E_c0000005_R DEFAULT_BUCKET_ID: WIN8_DRIVER_FAULT PROCESS_NAME: svchost.exe CURRENT_IRQL: 0 DEVICE_OBJECT: 88e93680 DRIVER_OBJECT: 00000000 EXCEPTION_RECORD: 895b3878 -- (.exr 0xffffffff895b3878) ExceptionAddress: 8ffc58c9 (isstrtc+0x000138c9) ExceptionCode: c0000005 (Access violation) ExceptionFlags: 00000000 NumberParameters: 2 Parameter[0]: 00000000 Parameter[1]: 00000004 Attempt to read from address 00000004 TRAP_FRAME: 895b395c -- (.trap 0xffffffff895b395c) ErrCode = 00000000 eax=00000000 ebx=00000000 ecx=00000000 edx=00000000 esi=c0000272 edi=00000000 eip=8ffc58c9 esp=895b39d0 ebp=895b3a00 iopl=0 nv up ei ng nz ac po cy cs=0008 ss=0010 ds=4b10 es=0023 fs=0030 gs=0023 efl=00010293 isstrtc+0x138c9: 8ffc58c9 f6400402 test byte ptr [eax+4],2 ds:4b10:0004=?? Resetting default scope LAST_CONTROL_TRANSFER: from 821dca77 to 8215bc64 STACK_TEXT: 895b3330 821dca77 0000001e c0000005 8ffc58c9 nt!KeBugCheckEx 895b334c 82172022 895b3878 82263f80 895b3440 nt!KiFatalExceptionHandler+0x1a 895b3370 82171ff4 895b3878 82263f80 895b3440 nt!ExecuteHandler2+0x26 895b3430 820dbcef 895b3878 895b3440 00010037 nt!ExecuteHandler+0x24 895b385c 8216db26 895b3878 00000000 895b395c nt!KiDispatchException+0x101 895b38c8 8217036b 00000000 00000000 00000000 nt!KiDispatchTrapException+0x4e 895b38c8 8ffc58c9 00000000 00000000 00000000 nt!KiTrap0E+0x1a7 WARNING: Stack unwind information not available. Following frames may be wrong. 895b3a00 8ffc5f94 00000000 87e84b00 88e977f8 isstrtc+0x138c9 895b3a18 8ffc49ef 88e91728 88e91728 895b3a44 isstrtc+0x13f94 895b3a28 8dba8367 88e91728 af6971d8 88e31f20 isstrtc+0x129ef 895b3a44 8dba843f af6971d8 00000020 87e84b40 portcls!PcDispatchProperty+0xff 895b3a64 8bbb2589 00000040 87e84b40 87e84b00 portcls!PropertyItemPropertyHandler+0x2e 895b3ac8 8bbbced4 00000004 87e84b00 00000028 ks!KspPropertyHandler+0x338 895b3ae4 8dba760a 88e31f20 00000004 af6971d8 ks!KsPropertyHandler+0x1b 895b3b00 8dba738a b643a868 00e977f8 00000004 portcls!PcHandlePropertyWithTable+0x33 895b3b40 8bbb2a0f 8ca6e030 00000002 8ca6e0e8 portcls!DispatchDeviceIoControl+0xae 895b3b90 8dba703c 8ca6e030 88e31f20 88e93680 ks!KsDispatchIrp+0x46 895b3bc0 8dba7299 895b3bdc 8ffe1fc0 8ca6e030 portcls!KsoDispatchIrp+0x37 895b3bc8 8ffe1fc0 8ca6e030 88e31f20 8ca6e030 portcls!PcDispatchIrp+0x27 895b3bdc 820d94f7 8ca6e030 88e31f20 00000103 isstrtc+0x2ffc0 895b3bf4 822fd8bc 88e31fd8 88e31f20 00000003 nt!IofCallDriver+0x3b 895b3c50 822f324d 88e93680 00000000 8201e601 nt!IopSynchronousServiceTail+0x13c 895b3cf8 822f1bfc 00000000 00000000 00000204 nt!IopXxxControlFile+0x3bd 895b3d24 8216cde7 00000bbc 00000000 00000000 nt!NtDeviceIoControlFile+0x2a 895b3d24 7741cb70 00000bbc 00000000 00000000 nt!KiSystemServicePostCall 00b1f50c 7741b65a 75070d2d 00000bbc 00000000 ntdll!KiFastSystemCallRet 00b1f510 75070d2d 00000bbc 00000000 00000000 ntdll!NtDeviceIoControlFile+0xa 00b1f570 76911962 00000bbc 002f0003 00b1f620 KERNELBASE!DeviceIoControl+0x77 00b1f59c 71908d4c 00000bbc 002f0003 00b1f620 KERNEL32!DeviceIoControlImplementation+0x3d 00b1f5d0 71909a37 00b1f620 00000020 01767a10 MMDevAPI!HrIoctl+0x3f 00b1f5f8 7190b9ec 00573468 00b1f620 00000020 MMDevAPI!CKsDeviceTopology::HrIoctl+0x3d 00b1f648 7190b77a 01767a10 00000040 004bf7b4 MMDevAPI!CAudioFormatSupport::SetProposedFormat+0x4a 00b1f6f0 7190b6e6 0057347c 01767a10 00000040 MMDevAPI!CAudioFormatSupport::IsFormatSupported+0x4a 00b1f72c 7190b5f6 00000003 a62a998f 004bf7b0 MMDevAPI!CFormatExaminer::ExaminePart+0x104 00b1f758 7190ac50 00000003 a62a99bf 00518360 MMDevAPI!CFormatExaminer::Examine+0x6d 00b1f7d8 7191785c 004bf12c 00000001 005670c8 MMDevAPI!CEndpointUtility::Search+0x17d 00b1f870 7190afad 004bdd94 00000001 005670c8 MMDevAPI!CEndpointUtility::Search+0x331 00b1f8c0 71919180 005670e0 00b1f90c 00518360 MMDevAPI!CEndpointUtility::FindHostConnector2+0x1c5 00b1f8e0 70eff10a 005670e0 00b1f90c 00000040 MMDevAPI!CEndpointUtility::FindHostConnector+0x1b 00b1f9b4 70efe981 005670e0 00000164 028b5e10 audioendpointbuilder!CAvEndpointBuilder::FindAndCacheHostConnectors+0x1aa 00b1fb0c 70efcb33 0051e918 004bdd90 004a0234 audioendpointbuilder!CAvEndpointBuilder::EndpointRTM+0x771 00b1fbd8 70efc120 0051e918 f0d1aec7 00000000 audioendpointbuilder!CAvEndpointBuilder::SyncEndpoint+0x963 00b1fc20 70f10b1a f0d1a97b 0049af40 00000000 audioendpointbuilder!CAvEndpointBuilder::SyncEndpoints+0x190 00b1fc54 70f0dff9 0149b1c4 00000000 70f0df0c audioendpointbuilder!CAvEndpointBuilder::OnDeviceInterfaceArrival+0xa8 00b1fc60 70f0df0c f0d1a9ab 0049af40 70f0dee0 audioendpointbuilder!VAD_EndpointBuilderAudioInterfaceArrival+0x15 00b1fc84 70f08914 0149b1a8 70ef8670 00576de0 audioendpointbuilder!CAudioEpbService::DeviceArrivalEvent+0x2c 00b1fca4 70ef9549 f0d1a82f 70ef9300 7691179b audioendpointbuilder!DEVICE_EVENT::Invoke+0x102a4 00b1fd00 769117ad 00000000 00b1fd54 774061bb audioendpointbuilder!EventWorkerThread+0x249 00b1fd0c 774061bb 00000000 0fdc0589 00000000 KERNEL32!BaseThreadInitThunk+0xe 00b1fd54 77406189 ffffffff 7742e864 00000000 ntdll!__RtlUserThreadStart+0x2b 00b1fd64 00000000 70ef9300 00000000 00000000 ntdll!_RtlUserThreadStart+0x1b STACK_COMMAND: kb FOLLOWUP_IP: isstrtc+138c9 8ffc58c9 f6400402 test byte ptr [eax+4],2 SYMBOL_STACK_INDEX: 7 SYMBOL_NAME: isstrtc+138c9 FOLLOWUP_NAME: MachineOwner MODULE_NAME: isstrtc IMAGE_NAME: isstrtc.sys DEBUG_FLR_IMAGE_TIMESTAMP: 53db2389 FAILURE_BUCKET_ID: 0x1E_c0000005_R_isstrtc+138c9 BUCKET_ID: 0x1E_c0000005_R_isstrtc+138c9 Followup: MachineOwner