我的程序在客户电脑上偶尔会死机，保存了死机时的DUMP文件，但是看不出问题，哪位大神指导一下？
0:000> !analyze -v
- *
- Exception Analysis *
- * *******************************************************************************
*** ERROR: Symbol file could not be found. Defaulted to export symbols for user32.dll -
GetUrlPageData2 (WinHttp) failed: 12030.
FAULTING_IP:
+755fd8c74230000
00000000 ?? ???
EXCEPTION_RECORD: ffffffff -- (.exr 0xffffffffffffffff)
ExceptionAddress: 00000000
ExceptionCode: 80000003 (Break instruction exception)
ExceptionFlags: 00000000
NumberParameters: 0
CONTEXT: 00000000 -- (.cxr 0x0;r)
eax=000000bc ebx=006a2130 ecx=00000064 edx=00008b6d esi=000001d0 edi=00000000
eip=7c92e514 esp=0012ed30 ebp=0012ed94 iopl=0 nv up ei pl zr na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00000246
ntdll!KiFastSystemCallRet:
7c92e514 c3 ret
FAULTING_THREAD: 00000dd8
DEFAULT_BUCKET_ID: STATUS_BREAKPOINT
PROCESS_NAME: MAWin.exe
ERROR_CODE: (NTSTATUS) 0x80000003 - {
EXCEPTION_CODE: (NTSTATUS) 0x80000003 (2147483651) - {
NTGLOBALFLAG: 0
APPLICATION_VERIFIER_FLAGS: 0
APP: mawin.exe
ANALYSIS_VERSION: 6.3.9600.17029 (debuggers(dbg).140219-1702) x86fre
PRIMARY_PROBLEM_CLASS: STATUS_BREAKPOINT
BUGCHECK_STR: APPLICATION_FAULT_STATUS_BREAKPOINT
LAST_CONTROL_TRANSFER: from 7c92df5a to 7c92e514
STACK_TEXT:
0012ed2c 7c92df5a 7c8025db 000001d0 00000000 ntdll!KiFastSystemCallRet
0012ed30 7c8025db 000001d0 00000000 00000000 ntdll!NtWaitForSingleObject+0xc
0012ed94 7c802542 000001d0 ffffffff 00000000 kernel32!WaitForSingleObjectEx+0xa8
0012eda8 7c831fe0 000001d0 ffffffff 007ccea4 kernel32!WaitForSingleObject+0x12
0012edbc 0057abd7 000001d0 0012eddc 0012ee00 kernel32!GetOverlappedResult+0x30
0012ee10 00499f60 006a2130 00000000 00000001 MAWin!ThxComm32.WriteBuffer+0xdf
0012ee34 0049a36f 012c6a98 012c6ab2 000000ff MAWin!TPxComm32.SendComm+0x120
0012ee90 0049a858 00000000 00000000 ffffffff MAWin!TPxComm32.SendCommEx+0x353
0012eea8 00425302 0012fe38 0066f530 012cc004 MAWin!TPxComm32.GasOff+0x1c
0012fd78 00410fa4 012dd238 012dd238 012cc004 MAWin!TSampleForm.Start+0x390e
0012fd8c 0066f542 0012fdc0 0066f428 0012fe54 MAWin!TMainForm.AutoTimerTimer+0x54
0012fdb8 006c6372 00000113 00000001 00000000 MAWin!Extctrls.TTimer.Timer+0x12
0012fdd0 77d18734 000b0202 00000113 00000001 MAWin!Classes._17260+0x16
WARNING: Stack unwind information not available. Following frames may be wrong.
0012fdfc 77d18816 01190e0e 000b0202 00000113 user32!GetDC+0x6d
0012fe64 77d189cd 00000000 01190e0e 000b0202 user32!GetDC+0x14f
0012fec4 77d196c7 0012fef4 00000001 0012ff40 user32!GetWindowLongW+0x127
0012fed4 00669c20 0012fef4 0012ff00 00000000 user32!DispatchMessageA+0xf
0012ff40 00405b7b 00000000 00753034 00142442 MAWin!Forms.TApplication.ProcessMessage+0x88
0012ff88 006ef70b 00400000 00000000 00142442 MAWin!WinMain+0x113
0012ffc0 7c81776f 00091378 7c93005d 7ffd9000 MAWin!_startup+0x14f
0012fff0 00000000 004019f0 00000000 78746341 kernel32!BaseProcessStart+0x23
STACK_COMMAND: ~0s; .ecxr ; kb
FOLLOWUP_IP:
MAWin!ThxComm32.WriteBuffer+df
0057abd7 85c0 test eax,eax
SYMBOL_STACK_INDEX: 5
SYMBOL_NAME: mawin!ThxComm32.WriteBuffer+df
FOLLOWUP_NAME: MachineOwner
MODULE_NAME: MAWin
IMAGE_NAME: MAWin.exe
DEBUG_FLR_IMAGE_TIMESTAMP: 537ef3ed
FAILURE_BUCKET_ID: STATUS_BREAKPOINT_80000003_MAWin.exe!ThxComm32.WriteBuffer
BUCKET_ID: APPLICATION_FAULT_STATUS_BREAKPOINT_mawin!ThxComm32.WriteBuffer+df
ANALYSIS_SOURCE: UM
FAILURE_ID_HASH_STRING: um:status_breakpoint_80000003_mawin.exe!thxcomm32.writebuffer
FAILURE_ID_HASH: {c0136087-fa5c-54f2-9419-a16689e0d97a}
Followup: MachineOwner
可以看出来是死在WriteBuffer函数上，但是看不出为什么会死
分析了一下堆栈的状态
0:000> ~*kb
. 0 Id: e38.dd8 Suspend: 0 Teb: 7ffdf000 Unfrozen
ChildEBP RetAddr Args to Child
0012ed2c 7c92df5a 7c8025db 000001d0 00000000 ntdll!KiFastSystemCallRet
0012ed30 7c8025db 000001d0 00000000 00000000 ntdll!NtWaitForSingleObject+0xc
0012ed94 7c802542 000001d0 ffffffff 00000000 kernel32!WaitForSingleObjectEx+0xa8
0012eda8 7c831fe0 000001d0 ffffffff 007ccea4 kernel32!WaitForSingleObject+0x12
0012edbc 0057abd7 000001d0 0012eddc 0012ee00 kernel32!GetOverlappedResult+0x30
0012ee10 00499f60 006a2130 00000000 00000001 MAWin!ThxComm32.WriteBuffer+0xdf
0012ee34 0049a36f 012c6a98 012c6ab2 000000ff MAWin!TPxComm32.SendComm+0x120
0012ee90 0049a858 00000000 00000000 ffffffff MAWin!TPxComm32.SendCommEx+0x353
0012eea8 00425302 0012fe38 0066f530 012cc004 MAWin!TPxComm32.GasOff+0x1c
0012fd78 00410fa4 012dd238 012dd238 012cc004 MAWin!TSampleForm.Start+0x390e
0012fd8c 0066f542 0012fdc0 0066f428 0012fe54 MAWin!TMainForm.AutoTimerTimer+0x54
0012fdb8 006c6372 00000113 00000001 00000000 MAWin!Extctrls.TTimer.Timer+0x12
0012fdd0 77d18734 000b0202 00000113 00000001 MAWin!Classes._17260+0x16
WARNING: Stack unwind information not available. Following frames may be wrong.
0012fdfc 77d18816 01190e0e 000b0202 00000113 user32!GetDC+0x6d
0012fe64 77d189cd 00000000 01190e0e 000b0202 user32!GetDC+0x14f
0012fec4 77d196c7 0012fef4 00000001 0012ff40 user32!GetWindowLongW+0x127
0012fed4 00669c20 0012fef4 0012ff00 00000000 user32!DispatchMessageA+0xf
0012ff40 00405b7b 00000000 00753034 00142442 MAWin!Forms.TApplication.ProcessMessage+0x88
0012ff88 006ef70b 00400000 00000000 00142442 MAWin!WinMain+0x113
0012ffc0 7c81776f 00091378 7c93005d 7ffd9000 MAWin!_startup+0x14f
0012fff0 00000000 004019f0 00000000 78746341 kernel32!BaseProcessStart+0x23
1 Id: e38.69c Suspend: 0 Teb: 7ffdd000 Unfrozen
ChildEBP RetAddr Args to Child
020ffe74 7c92d21a 7c8023f1 00000000 020ffea8 ntdll!KiFastSystemCallRet
020ffe78 7c8023f1 00000000 020ffea8 020fff6c ntdll!ZwDelayExecution+0xc
020ffed0 7c802455 00000001 00000000 020fff18 kernel32!SleepEx+0x61
020ffee0 0049ecdc 00000001 0613b2ff 1f1b611a kernel32!Sleep+0xf
020fff18 00574931 020fff78 0057493b 020fff70 MAWin!TCommThread.Execute+0xec
020fff70 006c4e67 020fff84 006c4e71 020fffa0 MAWin!Exceptionlog.HookedThreadExecute+0xd1
020fffa0 006e35be 020fffdc 006e31b8 020fffb4 MAWin!Classes._17119+0x37
020fffb4 7c80b729 01239fa0 00000208 0012fbd0 MAWin!System._16726+0x2a
020fffec 00000000 006e3594 01239fa0 00000000 kernel32!BaseThreadStart+0x37
更看不出问题了。。。
哪位大神指导一下？？小女子不胜感激
