Crash Dump Analysis

Crash Dump Analysis Patterns (Part 148)

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Whereas Stack Trace Collection pattern covers all thread stack traces from a memory dump Stack Trace Set pattern covers only unique non-duplicated thread stack traces differing for example, in stack frame modules and function names. In user process memory dumps it is !uniqstack WinDbg command (don’t forget that command has optional parameters, for example, -v to simulate verbose ~*kv output):

0:000> ~ . 0 Id: f00.f04 Suspend: 0 Teb: 7efdd000 Unfrozen 1 Id: f00.f18 Suspend: 1 Teb: 7efda000 Unfrozen 2 Id: f00.f1c Suspend: 1 Teb: 7efd7000 Unfrozen

0:000> ~*kc

. 0 Id: f00.f04 Suspend: 0 Teb: 7efdd000 Unfrozen

ntdll!NtWaitForMultipleObjects KERNELBASE!WaitForMultipleObjectsEx kernel32!WaitForMultipleObjectsExImplementation kernel32!WaitForMultipleObjects kernel32!WerpReportFaultInternal kernel32!WerpReportFault kernel32!BasepReportFault kernel32!UnhandledExceptionFilter ntdll!__RtlUserThreadStart ntdll!_EH4_CallFilterFunc ntdll!_except_handler4 ntdll!ExecuteHandler2 ntdll!ExecuteHandler ntdll!KiUserExceptionDispatcher KERNELBASE!DebugBreak ApplicationK!main ApplicationK!__tmainCRTStartup kernel32!BaseThreadInitThunk ntdll!__RtlUserThreadStart ntdll!_RtlUserThreadStart

1 Id: f00.f18 Suspend: 1 Teb: 7efda000 Unfrozen

ntdll!NtDelayExecution KERNELBASE!SleepEx KERNELBASE!Sleep kernel32!WerpReportFault kernel32!BasepReportFault kernel32!UnhandledExceptionFilter ntdll!__RtlUserThreadStart ntdll!_EH4_CallFilterFunc ntdll!_except_handler4 ntdll!ExecuteHandler2 ntdll!ExecuteHandler ntdll!KiUserExceptionDispatcher ApplicationK!thread_two ApplicationK!_callthreadstart ApplicationK!_threadstart kernel32!BaseThreadInitThunk ntdll!__RtlUserThreadStart ntdll!_RtlUserThreadStart

2 Id: f00.f1c Suspend: 1 Teb: 7efd7000 Unfrozen

0:000> !uniqstack Processing 3 threads, please wait

. 0 Id: f00.f04 Suspend: 0 Teb: 7efdd000 Unfrozen Start: ApplicationK!mainCRTStartup (013a137c) Priority: 0 Priority class: 32 Affinity: 3 ChildEBP RetAddr 0037f1a4 770d0bdd ntdll!NtWaitForMultipleObjects+0x15 0037f240 7529162d KERNELBASE!WaitForMultipleObjectsEx+0x100 0037f288 75291921 kernel32!WaitForMultipleObjectsExImplementation+0xe0 0037f2a4 752b9b2d kernel32!WaitForMultipleObjects+0x18 0037f310 752b9bca kernel32!WerpReportFaultInternal+0x186 0037f324 752b98f8 kernel32!WerpReportFault+0x70 0037f334 752b9875 kernel32!BasepReportFault+0x20 0037f3c0 77b10df7 kernel32!UnhandledExceptionFilter+0x1af 0037f3c8 77b10cd4 ntdll!__RtlUserThreadStart+0x62 0037f3dc 77b10b71 ntdll!_EH4_CallFilterFunc+0x12 0037f404 77ae6ac9 ntdll!_except_handler4+0x8e 0037f428 77ae6a9b ntdll!ExecuteHandler2+0x26 0037f4d8 77ab010f ntdll!ExecuteHandler+0x24 0037f4d8 770d280c ntdll!KiUserExceptionDispatcher+0xf 0037f824 013a1035 KERNELBASE!DebugBreak+0x2 0037f828 013a1325 ApplicationK!main+0x25 0037f870 75293677 ApplicationK!__tmainCRTStartup+0xfb 0037f87c 77ad9f02 kernel32!BaseThreadInitThunk+0xe 0037f8bc 77ad9ed5 ntdll!__RtlUserThreadStart+0x70 0037f8d4 00000000 ntdll!_RtlUserThreadStart+0x1b

. 1 Id: f00.f18 Suspend: 1 Teb: 7efda000 Unfrozen Start: ApplicationK!_threadstart (013a10d1) Priority: 0 Priority class: 32 Affinity: 3 ChildEBP RetAddr 0080f9ac 770d31bb ntdll!NtDelayExecution+0x15 0080fa14 770d3a8b KERNELBASE!SleepEx+0x65 0080fa24 752d28dd KERNELBASE!Sleep+0xf 0080fa38 752b98f8 kernel32!WerpReportFault+0x3f 0080fa48 752b9875 kernel32!BasepReportFault+0x20 0080fad4 77b10df7 kernel32!UnhandledExceptionFilter+0x1af 0080fadc 77b10cd4 ntdll!__RtlUserThreadStart+0x62 0080faf0 77b10b71 ntdll!_EH4_CallFilterFunc+0x12 0080fb18 77ae6ac9 ntdll!_except_handler4+0x8e 0080fb3c 77ae6a9b ntdll!ExecuteHandler2+0x26 0080fbec 77ab010f ntdll!ExecuteHandler+0x24 0080fbec 013a1000 ntdll!KiUserExceptionDispatcher+0xf 0080ff38 013a10ab ApplicationK!thread_two 0080ff70 013a1147 ApplicationK!_callthreadstart+0x1b 0080ff78 75293677 ApplicationK!_threadstart+0x76 0080ff84 77ad9f02 kernel32!BaseThreadInitThunk+0xe 0080ffc4 77ad9ed5 ntdll!__RtlUserThreadStart+0x70 0080ffdc 00000000 ntdll!_RtlUserThreadStart+0x1b

Total threads: 3 Duplicate callstacks: 1(windbg thread #s follow): 2

Generally, any property can be chosen to form such a set from a collection of stack traces.

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This entry was posted on Wednesday, September 7th, 2011 at 3:49 pm and is filed under Crash Dump Analysis, Crash Dump Patterns, Debugging, Stack Trace Collection, WinDbg Tips and Tricks. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

Crash Dump Analysis Patterns (Part 148)

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