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This December starts with easy and obvious patterns that I forgot to write about. Integer division by zero is one of the most frequent exceptions. It is easily recognizable in process crash dumps by the processor instruction that caused this exception type (DIV or IDIV):

FAULTING_IP:
DLL!FindHighestID+278
1b2713c4 f775e4 div dword ptr [ebp-0×1c]

EXCEPTION_RECORD: ffffffff -- (.exr ffffffffffffffff)
ExceptionAddress: 1b2713c4 (DLL!FindHighestID+0x00000278)
ExceptionCode: c0000094 (Integer divide-by-zero)
ExceptionFlags: 00000000
NumberParameters: 0

or

FAULTING_IP:
Application+263d8
004263d8 f7fe idiv eax,esi

EXCEPTION_RECORD: ffffffff -- (.exr 0xffffffffffffffff)
ExceptionAddress: 004263d8 (Application+0x000263d8)
ExceptionCode: c0000094 (Integer divide-by-zero)
ExceptionFlags: 00000000
NumberParameters: 0

ERROR_CODE: (NTSTATUS) 0xc0000094 - {EXCEPTION} Integer division by zero.

- Dmitry Vostokov @ DumpAnalysis.org -

           

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This entry was posted on Monday, December 1st, 2008 at 5:37 pm and is filed under Crash Dump Analysis, Crash Dump Patterns, Debugging. 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.