我试图追查从转储一个NullReferenceException。 该NullReferenceException异常是不是崩溃的异常,而崩溃的例外是包含一个InnerException这是一个NullReferenceException异常TargetInvocationException。
我使用WinDBG的与SOS,我用命令analyze -v
,这给我的NullReferenceException的调用堆栈:
EXCEPTION_OBJECT: !pe f6cb150
Exception object: 000000000f6cb150
Exception type: System.NullReferenceException
Message: Object reference not set to an instance of an object.
InnerException: <none>
StackTrace (generated):
SP IP Function
000000002CD9D8C0 000007FF01E7C639 MyDll!DoSomething2()+0xe99
000000002CD9DBE0 000007FF01E7B11D MyDll!DoSomething1()+0x43d
000000002CD9DD20 000007FF01E7AB11 MyDll!WorkerDoWork(System.Object, System.ComponentModel.DoWorkEventArgs)+0x51
000000002CD9DD80 000007FEEA68A0F2 System_ni!System.ComponentModel.BackgroundWorker.WorkerThreadStart(System.Object)+0x62
请注意,我得到与字节偏移方法名,但没有行号。 DoSomething2
是一个大的功能,所以NullReferenceException异常发生的位置不是很明显。
我试图按照苔丝Ferrandez的博客的说明:
.NET异常-追查在代码中发生的异常
但我得到了早期,我试图确定该方法的方法描述卡住DoSomething2
使用ip2md用了doSomething2的IP:7FF01E7C639:
> !ip2md 7FF01E7C639
Failed to request MethodData, not in JIT code range
注意!ip2md命令在TargetInvocationException发生地法的IP成功。
问题 :
我在哪里可以从这里去缩小东西线了doSomething2崩溃? 需要注意的是,我不能重现崩溃,所以我只有这一点(和几个副本)转储。
其他注意事项 :
- .NET 4.0
- WinDbg的版本:6.12.0002.633 AMD64
- 我是新来WinDBG的:让更多的信息,更好的
编辑1
当我没有设置正确的符号,我得到如下:
STACK_TEXT:
00000000`2cd9d8c0 00000000`ffffffff MyDll!Unknown_0xe99+0xe99
00000000`2cd9dbe0 00000000`ffffffff MyDll!Unknown_0x43d+0x43d
00000000`2cd9dd20 00000000`ffffffff MyDll!Unknown_0x51+0x51
00000000`2cd9dd80 00000000`ffffffff system_ni! System.ComponentModel.BackgroundWorker.WorkerThreadStart+0x62
!当我将它设置为指向我的符号服务器,并打开SYM嘈杂的,它似乎正确加载符号:
0:000> ld MyDll
DBGHELP: C:\Program Files\Debugging Tools for Windows (x64)\MyDll.dll - file not found
SYMSRV: c:\symbols\MyDll.dll\4F3D6F4B154000\MyDll.dll not found
SYMSRV: http://msdl.microsoft.com/download/symbols/MyDll.dll/4F3D6F4B154000/MyDll.dll not found
SYMSRV: \\mysymbolserver\store\Mydll.dll\4F3D6F4B154000\file.ptr
SYMSRV: MyDll.dl_ from \\mysymbolserver\store: uncompressed
DBGHELP: c:\symbols\MyDll.dll\4F3D6F4B154000\MyDll.dll - OK
DBGENG: c:\symbols\MyDll.dll\4F3D6F4B154000\MyDll.dll - Mapped image memory
SYMSRV: c:\symbols\MyDll.pdb\8AFC2BE7529A41289FA9FBCEDB6836161\Mydll.pdb not found
SYMSRV: http://msdl.microsoft.com/download/symbols/Mydll.pdb/8AFC2BE7529A41289FA9FBCEDB6836161/MyDll.pdb not found
SYMSRV: \\mysymbolserver\store\MyDll.pdb\8AFC2BE7529A41289FA9FBCEDB6836161\file.ptr
SYMSRV: MyDll.pd_ from \\mysymbolserver\store: uncompressed
DBGHELP: MyDll - private symbols & lines
c:\symbols\MyDll.pdb\8AFC2BE7529A41289FA9FBCEDB6836161\MyDll.pdb
Symbols loaded for MyDll
编辑2
我试着用name2ee如下!
0:000> !name2ee MyDll!MyType.DoSomething2
Module: 000007ff004995b8
Assembly: Autodesk.DataManagement.Client.Framework.Vault.dll
<invalid module token>
所以,没有运气。 但后来我几乎似乎与此得到的地方:
0:000> !name2ee MyDll.dll!MyNamespace.MyType
Module: 000007ff004995b8
Assembly: MyDll.dll
Token: 000000000200008c
MethodTable: 000007ff01b2e258
EEClass: 000007ff01b415e0
Name: MyNamespace.MyType
0:000> !dumpmt -md 7ff01b2e258
EEClass: 000007ff01b415e0
Module: 000007ff004995b8
Name: MyNamspace.MyType
mdToken: 000000000200008c
File: C:\Program Files\MyCompany\MyProduct\Bin\MyDll.dll
BaseSize: 0x30
ComponentSize: 0x0
Slots in VTable: 31
Number of IFaces in IFaceMap: 2
--------------------------------------
MethodDesc Table
Entry MethodDesc JIT Name
000007feeb31a2c0 0000000000000000 NONE 0000000000000000 is not a MethodDesc
000007feeb3689f0 0000000000000000 NONE 0000000000000000 is not a MethodDesc
000007feeb3688c0 0000000000000000 NONE 0000000000000000 is not a MethodDesc
000007feeb353440 0000000000000000 NONE 0000000000000000 is not a MethodDesc
000007ff01b01300 0000000000000000 NONE 0000000000000000 is not a MethodDesc
000007ff01e89140 0000000000000000 NONE 0000000000000000 is not a MethodDesc
000007ff01b9c080 0000000000000000 NONE 0000000000000000 is not a MethodDesc
000007ff01f45f40 0000000000000000 NONE 0000000000000000 is not a MethodDesc
000007ff01a9b358 000007ff01b2e128 NONE MyType.DoSomething3()
000007ff01a9b360 000007ff01b2e130 NONE MyType.DoSomething4()
000007ff01a9b368 000007ff01b2e138 NONE MyType.DoSomething5()
000007ff01e79800 0000000000000000 NONE 0000000000000000 is not a MethodDesc
000007ff020fea80 0000000000000000 NONE 0000000000000000 is not a MethodDesc
000007ff01a9b3b0 000007ff01b2e1b0 NONE MyType.DoSomething6()
000007ff01a9b3b8 000007ff01b2e1b8 NONE MyType.DoSomething7()
000007ff01a9b328 000007ff01b2e0f0 NONE MyType..ctor()
000007ff01b01280 0000000000000000 NONE 0000000000000000 is not a MethodDesc
000007ff01e7a810 0000000000000000 NONE 0000000000000000 is not a MethodDesc
000007ff01e7aac0 0000000000000000 NONE 0000000000000000 is not a MethodDesc
000007ff01e83240 0000000000000000 NONE 0000000000000000 is not a MethodDesc
000007ff01f19520 000007ff01b2e178 JIT MyType.RunWorkerCompleted(System.Object, System.ComponentModel.RunWorkerCompletedEventArgs)
000007ff01e7ace0 0000000000000000 JIT 0000000000000000 is not a MethodDesc
000007ff01e7b7a0 0000000000000000 JIT 0000000000000000 is not a MethodDesc
000007ff01e7b710 0000000000000000 JIT 0000000000000000 is not a MethodDesc
000007ff01e7d2b0 0000000000000000 JIT 0000000000000000 is not a MethodDesc
000007ff01b015f0 0000000000000000 JIT 0000000000000000 is not a MethodDesc
000007ff01b88ce0 0000000000000000 JIT 0000000000000000 is not a MethodDesc
000007ff01a9b3e0 000007ff01b2e200 NONE MyType.DoSomething8()
000007ff01b921e0 0000000000000000 NONE 0000000000000000 is not a MethodDesc
000007ff01b933b0 0000000000000000 NONE 0000000000000000 is not a MethodDesc
000007ff01b93870 0000000000000000 NONE 0000000000000000 is not a MethodDesc
我猜所有缺少的条目(那些上市“不是一个方法描述”)是由于这不是一个完整的小型转储。 那正确吗?