我正在分析在 IIS 7.5、Windows 2008 R2 64 中的 64 位 ASP.NET v4.0 AppPool 下运行的挂起 ASP.NET MVC 网站问题。我已通过 taskmgr 进行转储，并在 WinDBG x64 上进行分析Windows 7 64 位。
运行 !analyze -v 时，我看到错误 WRONG_SYMBOLS 和 BUGCHECK_STR: APPLICATION_FAULT_WRONG_SYMBOLS。这阻碍了我的调试，因为我无法检查一些需要调查死锁的线程。
详细信息
我的符号服务器是SRV*D:\DOWNLOADEDSYMBOLS*http://msdl.microsoft.com/download/symbols
我已删除此本地文件夹并允许从 m$ 下载所有符号。
我已经使用 .loadby sos clr 加载了 sos
!analyze -v 的输出:
*******************************************************************************
* *
* Exception Analysis *
* *
*******************************************************************************
FAULTING_IP:
+0
00000000`00000000 ?? ???
EXCEPTION_RECORD: ffffffffffffffff -- (.exr 0xffffffffffffffff)
ExceptionAddress: 0000000000000000
ExceptionCode: 80000003 (Break instruction exception)
ExceptionFlags: 00000000
NumberParameters: 0
FAULTING_THREAD: 0000000000000544
DEFAULT_BUCKET_ID: WRONG_SYMBOLS
PROCESS_NAME: w3wp.exe
ERROR_CODE: (NTSTATUS) 0x80000003 - {EXCEPTION} Breakpoint A breakpoint has been reached.
EXCEPTION_CODE: (HRESULT) 0x80000003 (2147483651) - One or more arguments are invalid
NTGLOBALFLAG: 0
APPLICATION_VERIFIER_FLAGS: 0
APP: w3wp.exe
MANAGED_STACK: !dumpstack -EE
OS Thread Id: 0x944 (15)
Current frame:
Child-SP RetAddr Caller, Callee
PRIMARY_PROBLEM_CLASS: WRONG_SYMBOLS
BUGCHECK_STR: APPLICATION_FAULT_WRONG_SYMBOLS
LAST_CONTROL_TRANSFER: from 000007fefd8910dc to 000000007712135a
STACK_TEXT:
00000000`000afac8 000007fe`fd8910dc : 00000000`00000000 00000000`00000000 000007fe`f9921630 000007fe`fadb7f66 : ntdll!NtWaitForSingleObject+0xa
00000000`000afad0 000007fe`f99241bc : 00000000`00000000 00000000`ffaf6de0 00000000`00000000 00000000`00000128 : KERNELBASE!WaitForSingleObjectEx+0x79
00000000`000afb70 00000000`ffaf3c60 : 00000000`fffffffe 00000000`00415f90 00000000`ffaf4588 000007fe`f9920000 : w3wphost!AppHostInitialize+0x278
00000000`000afbd0 00000000`ffaf11f1 : 00000000`00000000 00000000`ffaf1351 00000000`00000000 000003fd`deed0e35 : w3wp!wmain+0x470
00000000`000afd60 00000000`76e6652d : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : w3wp!PerfStopProvider+0x19b
00000000`000afda0 00000000`770fc521 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : kernel32!BaseThreadInitThunk+0xd
00000000`000afdd0 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : ntdll!RtlUserThreadStart+0x1d
STACK_COMMAND: ~0s; .ecxr ; kb
FOLLOWUP_IP:
w3wphost!AppHostInitialize+278
000007fe`f99241bc f605e1b4000003 test byte ptr [w3wphost!g_dwDebugFlags (000007fe`f992f6a4)],3
SYMBOL_STACK_INDEX: 2
SYMBOL_NAME: w3wphost!AppHostInitialize+278
FOLLOWUP_NAME: MachineOwner
MODULE_NAME: w3wphost
IMAGE_NAME: w3wphost.dll
DEBUG_FLR_IMAGE_TIMESTAMP: 4ce7c9ef
FAILURE_BUCKET_ID: WRONG_SYMBOLS_80000003_w3wphost.dll!AppHostInitialize
BUCKET_ID: X64_APPLICATION_FAULT_WRONG_SYMBOLS_w3wphost!AppHostInitialize+278
WATSON_STAGEONE_URL: http://watson.microsoft.com/StageOne/w3wp_exe/7_5_7601_17514/4ce7afa2/unknown/0_0_0_0/bbbbbbb4/80000003/00000000.htm?Retriage=1
Followup: MachineOwner
---------
来自.chain的输出:
Extension DLL search Path:
C:\Program Files (x86)\Windows Kits\8.0\Debuggers\x64\WINXP;C:\Program Files (x86)\Windows Kits\8.0\Debuggers\x64\winext;C:\Program Files (x86)\Windows Kits\8.0\Debuggers\x64\winext\arcade;C:\Program Files (x86)\Windows Kits\8.0\Debuggers\x64\pri;C:\Program Files (x86)\Windows Kits\8.0\Debuggers\x64;C:\Program Files (x86)\Windows Kits\8.0\Debuggers\x64\winext\arcade;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn\;C:\Program Files\Microsoft SQL Server\100\Tools\Binn\;C:\Program Files\Microsoft SQL Server\100\DTS\Binn\;C:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn\VSShell\Common7\IDE\;C:\Program Files (x86)\Microsoft SQL Server\100\DTS\Binn\;C:\Program Files (x86)\Intel\Services\IPT\;C:\Program Files\Intel\WiFi\bin\;C:\Program Files\Common Files\Intel\WirelessCommon\;C:\Program Files (x86)\Microsoft Team Foundation Server 2012 Power Tools\;C:\Program Files (x86)\Microsoft Team Foundation Server 2012 Power Tools\Best Practices Analyzer\;C:\Program Files (x86)\Microsoft SQL Server\110\Tools\Binn\;C:\Program Files\Microsoft SQL Server\110\Tools\Binn\;C:\Program Files\Microsoft SQL Server\110\DTS\Binn\;C:\Program Files (x86)\Microsoft SQL Server\110\Tools\Binn\ManagementStudio\;C:\Program Files (x86)\Microsoft SQL Server\110\DTS\Binn\;C:\Program Files\Microsoft\Web Platform Installer\;C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0\;C:\Program Files (x86)\Windows Kits\8.0\Windows Performance Toolkit\
Extension DLL chain:
D:\DOWNLOADEDSYMBOLS\sos_AMD64_AMD64_4.0.30319.18034.dll\50B5A78395e000\sos_AMD64_AMD64_4.0.30319.18034.dll: image 4.0.30319.18034, API 1.0.0, built Wed Nov 28 18:45:59 2012
[path: D:\DOWNLOADEDSYMBOLS\sos_AMD64_AMD64_4.0.30319.18034.dll\50B5A78395e000\sos_AMD64_AMD64_4.0.30319.18034.dll]
sosex: image 4.5.0.0, API 1.0.0, built Thu Oct 04 03:57:55 2012
[path: C:\Program Files (x86)\Windows Kits\8.0\Debuggers\x64\sosex.dll]
D:DOWNLOADEDSYMBOLS\sos_AMD64_AMD64_4.0.30319.18034.dll\50B5A78395e000\sos_AMD64_AMD64_4.0.30319.18034.dll: image 4.0.30319.18034, API 1.0.0, built Wed Nov 28 18:45:59 2012
[path: D:\DOWNLOADEDSYMBOLS\sos_AMD64_AMD64_4.0.30319.18034.dll\50B5A78395e000\sos_AMD64_AMD64_4.0.30319.18034.dll]
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\sos: image 4.0.30319.18034, API 1.0.0, built Wed Nov 28 18:45:59 2012
[path: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\sos.dll]
dbghelp: image 6.2.9200.20512, API 6.2.6, built Fri Sep 07 17:45:49 2012
[path: C:\Program Files (x86)\Windows Kits\8.0\Debuggers\x64\dbghelp.dll]
ext: image 6.2.9200.20522, API 1.0.0, built Fri Sep 21 20:17:05 2012
[path: C:\Program Files (x86)\Windows Kits\8.0\Debuggers\x64\winext\ext.dll]
exts: image 6.2.9200.16384, API 1.0.0, built Thu Jul 26 14:15:20 2012
[path: C:\Program Files (x86)\Windows Kits\8.0\Debuggers\x64\WINXP\exts.dll]
uext: image 6.2.9200.16384, API 1.0.0, built Thu Jul 26 14:15:09 2012
[path: C:\Program Files (x86)\Windows Kits\8.0\Debuggers\x64\winext\uext.dll]
ntsdexts: image 6.2.9200.16384, API 1.0.0, built Thu Jul 26 14:16:01 2012
[path: C:\Program Files (x86)\Windows Kits\8.0\Debuggers\x64\WINXP\ntsdexts.dll]
.reload 的输出，带有 !sym 噪声
DBGHELP: ntdll - public symbols
d:\downloadedsymbols\ntdll.pdb\15EB43E23B12409C84E3CC7635BAF5A32\ntdll.pdb
..............................................................
DBGHELP: KERNELBASE - public symbols
d:\downloadedsymbols\kernelbase.pdb\91C72371DD43448192B7B46F5ED10AA02\kernelbase.pdb
死锁分析
主题列表
!threads 的输出:
ID OSID ThreadOBJ State GC Mode GC Alloc Context Domain Lock Count Apt Exception
7 1 7a8 0000000001f92a50 28220 Preemptive 0000000000000000:0000000000000000 000000000119ee70 0 Ukn
13 2 1764 0000000001fa9fb0 2b220 Preemptive 0000000102D5DCC8:0000000102D5F7E8 000000000119ee70 0 MTA (Finalizer)
15 3 944 0000000001ffa010 102a220 Preemptive 0000000000000000:0000000000000000 000000000119ee70 0 MTA (Threadpool Worker)
16 4 bb0 0000000002006ec0 21220 Preemptive 0000000000000000:0000000000000000 000000000119ee70 0 Ukn
6 15 1018 00000000086704d0 20220 Preemptive 0000000000000000:0000000000000000 000000000119ee70 0 Ukn
35 16 12e4 00000000098fc820 202b220 Preemptive 000000010400E5A0:00000001040102B0 0000000002005e90 1 MTA
...等
!dlk 的输出:
*DEADLOCK DETECTED*
CLR thread 0x15 holds the lock on SyncBlock 0000000009913cf8 OBJ:00000000ffe31898
[System.Collections.Generic.Dictionary``2[[System.String, mscorlib],[System.Resources.ResourceLocator, mscorlib]]]
...and is waiting for the lock on SyncBlock 0000000009913ca8 OBJ:00000000ffe318e8[System.Resources.ResourceReader]
CLR thread 0x16 holds the lock on SyncBlock 0000000009913ca8 OBJ:00000000ffe318e8[System.Resources.ResourceReader]
...and is waiting for the lock on SyncBlock 0000000009913cf8 OBJ:00000000ffe31898
[System.Collections.Generic.Dictionary``2[[System.String, mscorlib],[System.Resources.ResourceLocator, mscorlib]]]
CLR Thread 0x15 is waiting at System.Resources.ResourceReader.AllocateStringForNameIndex(Int32, Int32 ByRef)(+0x17 IL,+0xc9 Native)
CLR Thread 0x16 is waiting at System.Resources.RuntimeResourceSet.GetObject(System.String, Boolean, Boolean)(+0xee IL,+0x375 Native)
线程 15 的分析
~6s 的输出:
ntdll!ZwDelayExecution+0xa:
00000000`771213aa c3 ret
..然后从!clrstack输出:
OS Thread Id: 0x1018 (6)
Child SP IP Call Site
GetFrameContext failed: 1
0000000000000000 0000000000000000 <unknown>
线程 16 的分析
~35s 的输出:
ntdll!NtWaitForMultipleObjects+0xa:
00000000`771218ca c3 ret
!clrstack 的输出:
OS Thread Id: 0x12e4 (35)
Child SP IP Call Site
000000000cc9e188 00000000771218ca [HelperMethodFrame_1OBJ: 000000000cc9e188] System.Threading.WaitHandle.WaitMultiple(System.Threading.WaitHandle[], Int32, Boolean, Boolean)
000000000cc9e2c0 000007fef65e562c System.Threading.WaitHandle.WaitAny(System.Threading.WaitHandle[], Int32, Boolean)
000000000cc9e320 000007fef5670d06 System.Net.TimerThread.ThreadProc()
000000000cc9e3f0 000007fef65a0a05 System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
000000000cc9e550 000007fef65a0769 System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
000000000cc9e580 000007fef65a0727 System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)
000000000cc9e5d0 000007fef65b3e81 System.Threading.ThreadHelper.ThreadStart()
000000000cc9e8e8 000007fef9ec07f3 [GCFrame: 000000000cc9e8e8]
000000000cc9ec18 000007fef9ec07f3 [DebuggerU2MCatchHandlerFrame: 000000000cc9ec18]
000000000cc9edf8 000007fef9ec07f3 [ContextTransitionFrame: 000000000cc9edf8]
000000000cc9efe8 000007fef9ec07f3 [DebuggerU2MCatchHandlerFrame: 000000000cc9efe8]
最佳答案
忽略该错误。 !analyze -v 仅对故障转储有用(当然，我相信您可以将一些参数传递给它以用于除故障转储之外的其他操作)。它报告的是“崩溃”的原因是遇到了调试点。这是正确的，因为当您转储进程时，它会向该进程注入(inject)一个线程并导致命中断点，然后转储该进程的内存。因此，分析告诉您“崩溃”的原因是遇到了断点。可以安全地忽略它。当您查看所有线程时，您应该能够看到它们。其他一切都应该正常工作。
关于asp.net - WinDBG w3wp.exe x64 挂起转储 WRONG_SYMBOLS，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/15938363/