.net 高级调试学习（3）异常查看

发布时间：2023-09-06 02:04责任编辑：沈小雨关键词：暂无标签

还是 .net 高级调试学习（2）中的源代码，

运行调试程序到输出异常，windbg自动中断后，

1、执行.loadby sos clr

2、执行!printexception ,（PS ：缩写!pe）看到如下：

Exception object: 0000000002557cb8Exception type: ??System.ArgumentExceptionMessage: ?????????Obj cannot be nullInnerException: ??<none>StackTrace (generated): ???SP ??????????????IP ??????????????Function ???000000000025E8D0 000007FE909C0CB5 03ObjTypes!Advanced.NET.Debugging.Chapter3.ObjTypes.ThrowException(Advanced.NET.Debugging.Chapter3.ObjTypes)+0x95 ???000000000025E930 000007FE909C065B 03ObjTypes!Advanced.NET.Debugging.Chapter3.ObjTypes.Main(System.String[])+0x1dbStackTraceString: <none>HResult: 80070057

3, 执行!DumpObj 0000000002557cb8 查看具体异常内容

Name: ???????System.ArgumentExceptionMethodTable: 000007feef11ba28EEClass: ????000007feeeb179f8Size: ???????168(0xa8) bytesFile: ???????C:\windows\Microsoft.Net\assembly\GAC_64\mscorlib\v4.0_4.0.0.0__b77a5c561934e089\mscorlib.dllFields: ?????????????MT ???Field ??Offset ????????????????Type VT ????Attr ???????????Value Name000007feef108548 ?4000262 ???????8 ???????System.String ?0 instance 0000000002559bf8 _className000007feef128d58 ?4000263 ??????10 ...ection.MethodBase ?0 instance 0000000000000000 _exceptionMethod000007feef108548 ?4000264 ??????18 ???????System.String ?0 instance 0000000000000000 _exceptionMethodString000007feef108548 ?4000265 ??????20 ???????System.String ?0 instance 0000000002557d60 _message000007feef11f9e0 ?4000266 ??????28 ...tions.IDictionary ?0 instance 0000000000000000 _data000007feef108778 ?4000267 ??????30 ????System.Exception ?0 instance 0000000000000000 _innerException000007feef108548 ?4000268 ??????38 ???????System.String ?0 instance 0000000000000000 _helpURL000007feef108b28 ?4000269 ??????40 ???????System.Object ?0 instance 0000000002557e20 _stackTrace000007feef108b28 ?400026a ??????48 ???????System.Object ?0 instance 0000000002557e98 _watsonBuckets000007feef108548 ?400026b ??????50 ???????System.String ?0 instance 0000000000000000 _stackTraceString000007feef108548 ?400026c ??????58 ???????System.String ?0 instance 0000000000000000 _remoteStackTraceString000007feef10af70 ?400026d ??????88 ????????System.Int32 ?1 instance ???????????????0 _remoteStackIndex000007feef108b28 ?400026e ??????60 ???????System.Object ?0 instance 0000000000000000 _dynamicMethods000007feef10af70 ?400026f ??????8c ????????System.Int32 ?1 instance ?????-2147024809 _HResult000007feef108548 ?4000270 ??????68 ???????System.String ?0 instance 0000000000000000 _source000007feef1298a0 ?4000271 ??????78 ???????System.IntPtr ?1 instance ???????????????0 _xptrs000007feef10af70 ?4000272 ??????90 ????????System.Int32 ?1 instance ??????-532462766 _xcode000007feef0d44d0 ?4000273 ??????80 ??????System.UIntPtr ?1 instance ???????????????0 _ipForWatsonBuckets000007feef0fa808 ?4000274 ??????70 ...ializationManager ?0 instance 0000000002557da0 _safeSerializationManager000007feef108b28 ?4000261 ??????a8 ???????System.Object ?0 ??shared ??????????static s_EDILock ????????????????????????????????>> Domain:Value ?00000000000c7840:NotInit ?<<000007feef108548 ?400038a ??????98 ???????System.String ?0 instance 0000000000000000 m_paramName

3、也可以使用 !threads 查看所有线程的异常，显示如下：

ThreadCount: ?????2UnstartedThread: ?0BackgroundThread: 1PendingThread: ???0DeadThread: ??????0Hosted Runtime: ??no ???????????????????????????????????????????????????????????????????????????????????????????????????????Lock ????????ID OSID ThreadOBJ ??????????State GC Mode ????GC Alloc Context ?????????????????Domain ??????????Count Apt Exception ??0 ???1 2064 000000000011a090 ???2a020 Preemptive ?0000000002562C68:0000000002563FD0 00000000000c7840 0 ????MTA System.ArgumentException 0000000002557cb8 ??2 ???2 1240 000000000011e0c0 ???2b220 Preemptive ?0000000000000000:0000000000000000 00000000000c7840 0 ????MTA (Finalizer)

书中使用的是kb 命令，查看托管和非托管的调用栈

 # RetAddr ??????????: Args to Child ??????????????????????????????????????????????????????????: Call Site00 000007fe`f0171f09 : 00000000`00000001 00000000`0025e5e8 00000000`02557cb8 00000000`0025e6b8 : KERNELBASE!RaiseException+0x3901 000007fe`f0171d10 : 00000000`02556138 ffffffff`fffffffe 00000000`00000000 00000000`00000000 : clr!RaiseTheExceptionInternalOnly+0x2f002 000007fe`909c0cb5 : 00000000`70000195 000007fe`908b40c0 00000000`0025eb38 00000000`0025ea00 : clr!IL_Throw+0x11103 000007fe`909c065b : 00000000`02556cd8 00000000`00000000 00000000`02556b4c 00000000`00000000 : 0x000007fe`909c0cb504 000007fe`f0024073 : 00000000`02553470 000007fe`908b40c0 00000000`00000000 00000000`00000000 : 0x000007fe`909c065b05 000007fe`f0023f25 : 00000000`0025ed08 000007fe`f00b38f1 00000000`00000000 00000000`00000000 : clr!CallDescrWorkerInternal+0x8306 000007fe`f0024506 : 00000000`00000001 00000000`0025ec80 00000000`0025ec50 00000000`0025ebc8 : clr!CallDescrWorkerWithHandler+0x4e07 000007fe`f01158e1 : 00000000`0025eb50 00000000`00000000 00000000`00000000 00000000`00000001 : clr!MethodDescCallSite::CallTargetWorker+0xf808 000007fe`f0115a7a : 00000000`00000001 00000000`00000000 00000000`00000000 00000000`02553470 : clr!RunMain+0x1e709 000007fe`f0115971 : 00000000`00000000 00000000`02551508 00000000`00000000 00000000`00c09a10 : clr!Assembly::ExecuteMainMethod+0xb60a 000007fe`f0115be3 : 00000000`0025f6c8 00000000`01140000 00000000`00000000 00000000`00000000 : clr!SystemDomain::ExecuteMainMethod+0x5ea0b 000007fe`f0115bba : 00000000`01140000 00000000`0025f820 00000000`00000000 000007fe`f0e94998 : clr!ExecuteEXE+0x3f0c 000007fe`f012805c : ffffffff`ffffffff 00000000`00000000 00000000`00000000 00000000`00000000 : clr!_CorExeMainInternal+0xb20d 000007fe`f0e37fd5 : 00000000`00000000 000007fe`00000091 00000000`00000000 00000000`0025f788 : clr!CorExeMain+0x140e 000007fe`f0ed5b21 : 00000000`00000000 000007fe`f0128048 00000000`00000000 00000000`00000000 : mscoreei!CorExeMain+0xe00f 00000000`76e159cd : 000007fe`f0e30000 00000000`00000000 00000000`00000000 00000000`00000000 : MSCOREE!CorExeMain_Exported+0x5710 00000000`7704a561 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : KERNEL32!BaseThreadInitThunk+0xd11 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : ntdll!RtlUserThreadStart+0x1d

说红色行的Args to Child 的第一个参数就是异常的指针，但是这里明显不是，而是上一行的红色才是，不知是不是.net2和.net4的差异问题，于是我用.net2编译的程序来调试，输出如下：

0:000> !pec0000005 Exception in C:\Windows\Microsoft.NET\Framework64\v2.0.50727\sos.pe debugger extension. ?????PC: 000007fe`e281f8e4 ?VA: 00000000`00000000 ?R/W: 0 ?Parameter: 00000000`000000000:000> !peException object: 00000000025dc6c0Exception type: System.ArgumentExceptionMessage: Obj cannot be nullInnerException: <none>StackTrace (generated): ???SP ??????????????IP ??????????????Function ???000000000020E9D0 000007FE8DFA0A9F 03ObjTypes!Advanced.NET.Debugging.Chapter3.ObjTypes.ThrowException(Advanced.NET.Debugging.Chapter3.ObjTypes)+0x8f ???000000000020EA10 000007FE8DFA0345 03ObjTypes!Advanced.NET.Debugging.Chapter3.ObjTypes.Main(System.String[])+0x225StackTraceString: <none>HResult: 800700570:000> kb # RetAddr ??????????: Args to Child ??????????????????????????????????????????????????????????: Call Site00 000007fe`ed6a436f : 00000000`002adce0 00000000`002adce0 00000000`0020e780 00000000`002adce0 : KERNELBASE!RaiseException+0x3901 000007fe`edc808a0 : 00000000`025dc6c0 00000000`00000000 00000000`00000000 00000000`00000001 : mscorwks!RaiseTheExceptionInternalOnly+0x2ff02 000007fe`8dfa0a9e : 00000000`70000195 000007fe`8de43528 00000000`00000001 00000000`00000000 : mscorwks!JIT_Throw+0x13003 000007fe`8dfa0344 : 00000000`025daef8 00000000`00000000 00000000`025dae34 00000000`00000000 : 0x000007fe`8dfa0a9e04 000007fe`ed838f32 : 00000000`025d94c8 00000000`00000000 000007fe`8de43c70 000007fe`ed70f7b9 : 0x000007fe`8dfa034405 000007fe`ed6c6683 : 00000000`00000002 00000000`00000016 000007fe`ed5f7690 00000000`00000000 : mscorwks!CallDescrWorker+0x8206 000007fe`edc18d31 : 00000000`0020ec88 00000000`00000000 00000000`0020ee90 00000000`00000008 : mscorwks!CallDescrWorkerWithHandler+0xd307 000007fe`ed783d6f : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`0020f0f0 : mscorwks!MethodDesc::CallDescr+0x2b108 000007fe`ed7a7e24 : 00000000`00280000 00000000`00000000 00000000`0000001e 00000000`00000000 : mscorwks!ClassLoader::RunMain+0x22b09 000007fe`edd061ad : 00000000`0020f6e0 00000000`00000000 00000000`003939e8 00000000`00000200 : mscorwks!Assembly::ExecuteMainMethod+0xbc0a 000007fe`ed7b52e7 : 00000000`00000000 00000000`00000000 00000000`00000000 000007fe`ed7cf566 : mscorwks!SystemDomain::ExecuteMainMethod+0x47d0b 000007fe`ed797d9c : ffffffff`fffffffe 00000000`0020d7f0 0000077c`00000000 00000000`00000000 : mscorwks!ExecuteEXE+0x470c 000007fe`f0e37fd5 : ffffffff`ffffffff 00000000`002adce0 00000000`00000000 00000000`0020f9a8 : mscorwks!_CorExeMain+0xac0d 000007fe`f0ed5b21 : 00000000`00000000 000007fe`ed797cf0 00000000`00000000 00000000`00000000 : mscoreei!CorExeMain+0xe00e 00000000`76e159cd : 000007fe`f0e30000 00000000`00000000 00000000`00000000 00000000`00000000 : MSCOREE!CorExeMain_Exported+0x570f 00000000`7704a561 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : KERNEL32!BaseThreadInitThunk+0xd10 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : ntdll!RtlUserThreadStart+0x1d

发现这个是和书上说的是一致的，所以.net2 和net4程序还是有很大差异的。

也可以通过.!dumpstackobjects (缩写!dso) 查看本线程调用栈所有对象实例

OS Thread Id: 0x2064 (0)RSP/REG ?????????Object ??????????Name000000000025E630 0000000002557cb8 System.ArgumentException000000000025E6A8 0000000002557cb8 System.ArgumentException000000000025E708 0000000002556cd8 Advanced.NET.Debugging.Chapter3.ObjTypes000000000025E710 0000000002557cb8 System.ArgumentException000000000025E720 0000000002556138 System.Byte[]000000000025E740 0000000002557cb8 System.ArgumentException000000000025E750 0000000002557cb8 System.ArgumentException000000000025E830 0000000002556cd8 Advanced.NET.Debugging.Chapter3.ObjTypes000000000025E838 0000000002557cb8 System.ArgumentException000000000025E8F0 0000000002553470 System.String[]000000000025E8F8 0000000002557d60 System.String ???Obj cannot be null000000000025E900 0000000002557cb8 System.ArgumentException000000000025E910 0000000002553470 System.String[]000000000025E930 0000000002556cd8 Advanced.NET.Debugging.Chapter3.ObjTypes000000000025E950 0000000002557bb8 System.Int32000000000025E958 00000000025535c0 System.String ???Greater {0}000000000025E960 0000000002556cd8 Advanced.NET.Debugging.Chapter3.ObjTypes000000000025E968 0000000002557bb8 System.Int32000000000025E970 00000000025535c0 System.String ???Greater {0}000000000025E978 0000000002557b88 Advanced.NET.Debugging.Chapter3.Comparer`1[[System.Int32, mscorlib]]000000000025E980 0000000002556cd8 Advanced.NET.Debugging.Chapter3.ObjTypes000000000025E988 0000000002557b88 Advanced.NET.Debugging.Chapter3.Comparer`1[[System.Int32, mscorlib]]000000000025E990 0000000002556cd8 Advanced.NET.Debugging.Chapter3.ObjTypes000000000025EA20 0000000002553470 System.String[]000000000025EB08 0000000002553470 System.String[]000000000025EBC8 0000000002553470 System.String[]000000000025ED98 0000000002553470 System.String[]000000000025EDC0 0000000002551508 System.AppDomain000000000025EEA8 0000000002551508 System.AppDomain000000000025F078 0000000002551508 System.AppDomain000000000025F370 0000000002551440 System.SharedStatics

.net 高级调试学习（3）异常查看

原文地址：https://www.cnblogs.com/karl-F/p/9314066.html

.net 高级调试学习（3）异常查看

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