Я подключил WinDbg к работающему процессу, и у него произошел сбой (у меня есть отдельный вопрос относительно этого случая). После сбоя программы WinDbg остановился и позволил мне отладить программу. Я взял аварийный дамп для дальнейшего исследования с помощью команды ".dump /ma".
Программа была скомпилирована как «Любой процессор», и я использовал WinDbg x64, чтобы получить дамп. Теперь я снова открываю WinDbg x64 на том же компьютере и открываю дамп сбоя. Вот что он говорит:
Loading Dump File [C:\crashdump.dmp]
User Mini Dump File with Full Memory: Only application data is available
Symbol search path is: SRV*c:\symbols*http://msdl.microsoft.com/download/symbols
Executable search path is:
Windows 7 Version 7601 (Service Pack 1) MP (8 procs) Free x64
Product: WinNt, suite: SingleUserTS
Machine Name:
Debug session time: Mon Aug 15 10:24:57.000 2011 (UTC + 1:00)
System Uptime: 17 days 0:54:39.021
Process Uptime: 12 days 14:01:31.000
................................................................
...............................................................
This dump file has an exception of interest stored in it.
The stored exception information can be accessed via .ecxr.
(1be0.b78): Access violation - code c0000005 (first/second chance not available)
*** WARNING: symbols timestamp is wrong 0x4dd2333e 0x4da4281c for clr.dll
clr!WKS::gc_heap::find_first_object+0x92:
000007fe`ea129a1d f70100000080 test dword ptr [rcx],80000000h ds:00000000`00003d80=????????
Затем я пытаюсь загрузить SOS с помощью ".load sos clr", и это приводит к ошибкам в:
The call to LoadLibrary(sos clr) failed, Win32 error 0n2
"The system cannot find the file specified."
Please check your debugger configuration and/or network access.
Попытка с ".loadby sos clr", и это работает. Теперь я хочу увидеть стек с "! Clrstack" и вставить сюда:
Failed to load data access DLL, 0x80004005
Verify that 1) you have a recent build of the debugger (6.2.14 or newer)
2) the file mscordacwks.dll that matches your version of clr.dll is
in the version directory
3) or, if you are debugging a dump file, verify that the file
mscordacwks_<arch>_<arch>_<version>.dll is on your symbol path.
4) you are debugging on the same architecture as the dump file.
For example, an IA64 dump file must be debugged on an IA64
machine.
You can also run the debugger command .cordll to control the debugger's
load of mscordacwks.dll. .cordll -ve -u -l will do a verbose reload.
If that succeeds, the SOS command should work on retry.
If you are debugging a minidump, you need to make sure that your executable
path is pointing to clr.dll as well.
Я пробовал ".symfix" и ".reload":
0:027> .symfix
0:027> .reload
..................*** WARNING: symbols timestamp is wrong 0x4dd2333e 0x4da4281c for clr.dll
..............................................
...............................................................
Застрял. В то же время, когда процесс работает под WinDgb, я могу приостановить выполнение, загрузить SOS
и успешно выполните команду "! clrstack".
Есть идеи?
Спасибо.
ОБНОВЛЕНИЕ - Выполнены шаги, указанные во втором ответе, по-прежнему не работает.
1) Путь моего символа: SRV * c: \ symbols *http://msdl.microsoft.com/download/symbols;srv*
2) CLR загружено: 4.0.30319. 237 :
0:027> lm v clr
Unknown option 'r'
start end module name
00000000`77b60000 00000000`77d09000 ntdll (pdb symbols) c:\symbols\ntdll.pdb\6192BFDB9F04442995FFCB0BE95172E12\ntdll.pdb
Loaded symbol image file: ntdll.dll
Image path: C:\Windows\System32\ntdll.dll
Image name: ntdll.dll
Timestamp: Sat Nov 20 13:11:21 2010 (4CE7C8F9)
CheckSum: 001B55EA
ImageSize: 001A9000
File version: 6.1.7601.17514
Product version: 6.1.7601.17514
File flags: 0 (Mask 3F)
File OS: 40004 NT Win32
File type: 2.0 Dll
File date: 00000000.00000000
Translations: 0409.04b0
CompanyName: Microsoft Corporation
ProductName: Microsoft® Windows® Operating System
InternalName: ntdll.dll
OriginalFilename: ntdll.dll
ProductVersion: 6.1.7601.17514
FileVersion: 6.1.7601.17514 (win7sp1_rtm.101119-1850)
FileDescription: NT Layer DLL
LegalCopyright: © Microsoft Corporation. All rights reserved.
000007fe`e9fb0000 000007fe`ea915000 clr # (pdb symbols) c:\symbols\clr.pdb\1A7EA01DA29549DAB2B0BD012A6C5BA12\clr.pdb
Loaded symbol image file: clr.dll
Image path: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\clr.dll
Image name: clr.dll
Timestamp: Tue May 17 09:35:10 2011 (4DD2333E)
CheckSum: 00967144
ImageSize: 00965000
File version: 4.0.30319.237
Product version: 4.0.30319.237
File flags: 8 (Mask 3F) Private
File OS: 4 Unknown Win32
File type: 2.0 Dll
File date: 00000000.00000000
Translations: 0409.04b0
CompanyName: Microsoft Corporation
ProductName: Microsoft® .NET Framework
InternalName: clr.dll
OriginalFilename: clr.dll
ProductVersion: 4.0.30319.235
FileVersion: 4.0.30319.235 (RTMGDR.030319-2300)
PrivateBuild: DDBLD240
FileDescription: Microsoft .NET Runtime Common Language Runtime - WorkStation
LegalCopyright: © Microsoft Corporation. All rights reserved.
Comments: Flavor=Retail
3) «C: \ Windows \ Microsoft.NET \ Framework64 \ v4.0.30319 \ mscordacwks.dll» имеет версию 4.0.30319. 239
4) Я обнаружил, что когда я загружаю дамп в WinDbg, он загружает правильный «mscordacwks.dll» из Интернета, таким образом, в папке «C: \ symbols \ mscordacwks_AMD64_AMD64_4.0.30319.237.dll \ 4DD2333E965000» у меня файл "mscordacwks_AMD64_AMD64_4.0.30319.237.dll".
5)
0:027> .cordll -ve -u -l
CLR DLL status: No load attempts
6)
0:027> !sym noisy
noisy mode - symbol prompts on
0:027> .restart
Loading Dump File [C:\crashdump.dmp]
User Mini Dump File with Full Memory: Only application data is available
DBGHELP: Symbol Search Path: srv*;srv*c:\symbols*http://msdl.microsoft.com/download/symbols
DBGHELP: Symbol Search Path: cache*;SRV*http://msdl.microsoft.com/download/symbols;srv*c:\symbols*http://msdl.microsoft.com/download/symbols
DBGHELP: Symbol Search Path: cache*;SRV*http://msdl.microsoft.com/download/symbols;srv*c:\symbols*http://msdl.microsoft.com/download/symbols
Symbol search path is: srv*;SRV*c:\symbols*http://msdl.microsoft.com/download/symbols
Executable search path is:
Windows 7 Version 7601 (Service Pack 1) MP (8 procs) Free x64
Product: WinNt, suite: SingleUserTS
Machine Name:
Debug session time: Mon Aug 15 10:24:57.000 2011 (UTC + 1:00)
System Uptime: 17 days 0:54:39.021
Process Uptime: 12 days 14:01:31.000
................................................................
...............................................................
DBGHELP: ntdll - public symbols
C:\Program Files\Debugging Tools for Windows (x64)\sym\ntdll.pdb\6192BFDB9F04442995FFCB0BE95172E12\ntdll.pdb
DBGHELP: Symbol Search Path: cache*;SRV*http://msdl.microsoft.com/download/symbols;srv*c:\symbols*http://msdl.microsoft.com/download/symbols
DBGHELP: Symbol Search Path: cache*;SRV*http://msdl.microsoft.com/download/symbols;srv*c:\symbols*http://msdl.microsoft.com/download/symbols
This dump file has an exception of interest stored in it.
The stored exception information can be accessed via .ecxr.
(1be0.b78): Access violation - code c0000005 (first/second chance not available)
*** WARNING: symbols timestamp is wrong 0x4dd2333e 0x4da4281c for clr.dll
DBGHELP: clr - public symbols
C:\Program Files\Debugging Tools for Windows (x64)\sym\clr.pdb\1A7EA01DA29549DAB2B0BD012A6C5BA12\clr.pdb
clr!WKS::gc_heap::find_first_object+0x92:
000007fe`ea129a1d f70100000080 test dword ptr [rcx],80000000h ds:00000000`00003d80=????????
7)
0:027> !clrstack
SYMSRV: C:\Program Files\Debugging Tools for Windows (x64)\sym\mscordacwks_AMD64_AMD64_4.0.30319.237.dll\4DD2333E965000\mscordacwks_AMD64_AMD64_4.0.30319.237.dll not found
SYMSRV: mscordacwks_AMD64_AMD64_4.0.30319.237.dll from http://msdl.microsoft.com/download/symbols: 502892 bytes - copied
DBGHELP: C:\Program Files\Debugging Tools for Windows (x64)\sym\mscordacwks_AMD64_AMD64_4.0.30319.237.dll\4DD2333E965000\mscordacwks_AMD64_AMD64_4.0.30319.237.dll cached to C:\Program Files\Debugging Tools for Windows (x64)\sym\mscordacwks_AMD64_AMD64_4.0.30319.237.dll\4DD233F317b000\mscordacwks_AMD64_AMD64_4.0.30319.237.dll
DBGHELP: C:\Program Files\Debugging Tools for Windows (x64)\sym\mscordacwks_AMD64_AMD64_4.0.30319.237.dll\4DD233F317b000\mscordacwks_AMD64_AMD64_4.0.30319.237.dll - OK
Failed to load data access DLL, 0x80004005
Verify that 1) you have a recent build of the debugger (6.2.14 or newer)
2) the file mscordacwks.dll that matches your version of clr.dll is
in the version directory
3) or, if you are debugging a dump file, verify that the file
mscordacwks_<arch>_<arch>_<version>.dll is on your symbol path.
4) you are debugging on the same architecture as the dump file.
For example, an IA64 dump file must be debugged on an IA64
machine.
You can also run the debugger command .cordll to control the debugger's
load of mscordacwks.dll. .cordll -ve -u -l will do a verbose reload.
If that succeeds, the SOS command should work on retry.
If you are debugging a minidump, you need to make sure that your executable
path is pointing to clr.dll as well.