WinDbg 的本机 32 位应用程序的小型转储在 64 位 Windows 上崩溃，不会加载系统 DLL 的符号
我从我们的一个应用程序崩溃中获得了一个小型转储文件。 它是一个 32 位本机应用程序，在 64 位 Windows 上运行。
如果我将小型转储文件加载到 WinDbg 中，WinDbg 将不会加载系统 DLL 的符号。 我已经正确配置了符号路径：
_NT_SYMBOL_PATH=SRV*C:\WebSymbols*http://msdl.microsoft.com/download/symbols
...因为 WinDbg 正确加载了在 32 位 Windows 上创建的小型转储的符号。 它只是不会加载 SysWOW64 目录中的 DLL 符号。
我在 32 位 Windows 2003 上尝试过 32 位 WinDbg（来自调试工具 6.9），在 64 位 Windows 2008 上尝试过 64 位 WinDbg（也来自调试工具 6.9）。两者都无法加载符号。 这是来自 32 位 WinDbg：
0:014> !sym noisy noisy mode - symbol prompts on 0:014> .reload .................................................................................... Loading unloaded module list .. SYMSRV: C:\WebSymbols\ntdll.dll\48E714D0170000\ntdll.dll not found SYMSRV: http://msdl.microsoft.com/download/symbols/ntdll.dll/48E714D0170000/ntdll.dll not found DBGENG: C:\Windows\SysWOW64\ntdll.dll - Couldn't map image from disk. Unable to load image C:\Windows\SysWOW64\ntdll.dll, Win32 error 0n2 DBGENG: ntdll.dll - Partial symbol image load missing image info DBGHELP: Module is not fully loaded into memory. DBGHELP: Searching for symbols using debugger-provided data. SYMSRV: C:\WebSymbols\wntdll.pdb\6686D0C5D0554E14953396093DA218A92\wntdll.pdb not found SYMSRV: http://msdl.microsoft.com/download/symbols/wntdll.pdb/6686D0C5D0554E14953396093DA218A92/wntdll.pdb not found DBGHELP: wntdll.pdb - file not found *** WARNING: Unable to verify timestamp for ntdll.dll *** ERROR: Module load completed but symbols could not be loaded for ntdll.dll DBGHELP: ntdll - no symbols loaded SYMSRV: C:\WebSymbols\kernel32.dll\48E7156Cf0000\kernel32.dll not found SYMSRV: http://msdl.microsoft.com/download/symbols/kernel32.dll/48E7156Cf0000/kernel32.dll not found DBGENG: C:\Windows\SysWOW64\kernel32.dll - Couldn't map image from disk. Unable to load image C:\Windows\SysWOW64\kernel32.dll, Win32 error 0n2 DBGENG: kernel32.dll - Partial symbol image load missing image info DBGHELP: Module is not fully loaded into memory. DBGHELP: Searching for symbols using debugger-provided data. SYMSRV: C:\WebSymbols\wkernel32.pdb\B0C3B36CC7EF4F3E9C168E186A5A6FEB2\wkernel32.pdb not found SYMSRV: http://msdl.microsoft.com/download/symbols/wkernel32.pdb/B0C3B36CC7EF4F3E9C168E186A5A6FEB2/wkernel32.pdb not found DBGHELP: wkernel32.pdb - file not found *** WARNING: Unable to verify timestamp for kernel32.dll *** ERROR: Module load completed but symbols could not be loaded for kernel32.dll DBGHELP: kernel32 - no symbols loaded SYMSRV: C:\WebSymbols\KERNELBASE.dll\48E7156D5a000\KERNELBASE.dll not found SYMSRV: http://msdl.microsoft.com/download/symbols/KERNELBASE.dll/48E7156D5a000/KERNELBASE.dll not found DBGENG: C:\Windows\SysWOW64\KERNELBASE.dll - Couldn't map image from disk. DBGENG: KERNELBASE.dll - Partial symbol image load missing image info DBGHELP: Module is not fully loaded into memory. DBGHELP: Searching for symbols using debugger-provided data. SYMSRV: C:\WebSymbols\wkernelbase.pdb\A8683F0C515F469B833E3FA562E0DB251\wkernelbase.pdb not found SYMSRV: http://msdl.microsoft.com/download/symbols/wkernelbase.pdb/A8683F0C515F469B833E3FA562E0DB251/wkernelbase.pdb not found DBGHELP: wkernelbase.pdb - file not found *** WARNING: Unable to verify timestamp for KERNELBASE.dll *** ERROR: Module load completed but symbols could not be loaded for KERNELBASE.dll DBGHELP: KERNELBASE - no symbols loaded
有什么想法吗？ 这些符号在 Microsoft 的符号服务器上不可用吗？
I've got a minidump file from a crash in one of our apps. It's a 32-bit native app, and it was running on 64-bit Windows.
If I load the minidump file into WinDbg, WinDbg won't load the symbols for the system DLLs. I've got my symbol paths configured correctly:
_NT_SYMBOL_PATH=SRV*C:\WebSymbols*http://msdl.microsoft.com/download/symbols
...because WinDbg correctly loads symbols for minidumps created on 32-bit Windows. It just won't load symbols for DLLs in the SysWOW64 directory.
I've tried 32-bit WinDbg (from Debugging Tools 6.9) on 32-bit Windows 2003, and 64-bit WinDbg (also from Debugging Tools 6.9) on 64-bit Windows 2008. Both fail to load the symbols. This is from the 32-bit WinDbg:
0:014> !sym noisy noisy mode - symbol prompts on 0:014> .reload .................................................................................... Loading unloaded module list .. SYMSRV: C:\WebSymbols\ntdll.dll\48E714D0170000\ntdll.dll not found SYMSRV: http://msdl.microsoft.com/download/symbols/ntdll.dll/48E714D0170000/ntdll.dll not found DBGENG: C:\Windows\SysWOW64\ntdll.dll - Couldn't map image from disk. Unable to load image C:\Windows\SysWOW64\ntdll.dll, Win32 error 0n2 DBGENG: ntdll.dll - Partial symbol image load missing image info DBGHELP: Module is not fully loaded into memory. DBGHELP: Searching for symbols using debugger-provided data. SYMSRV: C:\WebSymbols\wntdll.pdb\6686D0C5D0554E14953396093DA218A92\wntdll.pdb not found SYMSRV: http://msdl.microsoft.com/download/symbols/wntdll.pdb/6686D0C5D0554E14953396093DA218A92/wntdll.pdb not found DBGHELP: wntdll.pdb - file not found *** WARNING: Unable to verify timestamp for ntdll.dll *** ERROR: Module load completed but symbols could not be loaded for ntdll.dll DBGHELP: ntdll - no symbols loaded SYMSRV: C:\WebSymbols\kernel32.dll\48E7156Cf0000\kernel32.dll not found SYMSRV: http://msdl.microsoft.com/download/symbols/kernel32.dll/48E7156Cf0000/kernel32.dll not found DBGENG: C:\Windows\SysWOW64\kernel32.dll - Couldn't map image from disk. Unable to load image C:\Windows\SysWOW64\kernel32.dll, Win32 error 0n2 DBGENG: kernel32.dll - Partial symbol image load missing image info DBGHELP: Module is not fully loaded into memory. DBGHELP: Searching for symbols using debugger-provided data. SYMSRV: C:\WebSymbols\wkernel32.pdb\B0C3B36CC7EF4F3E9C168E186A5A6FEB2\wkernel32.pdb not found SYMSRV: http://msdl.microsoft.com/download/symbols/wkernel32.pdb/B0C3B36CC7EF4F3E9C168E186A5A6FEB2/wkernel32.pdb not found DBGHELP: wkernel32.pdb - file not found *** WARNING: Unable to verify timestamp for kernel32.dll *** ERROR: Module load completed but symbols could not be loaded for kernel32.dll DBGHELP: kernel32 - no symbols loaded SYMSRV: C:\WebSymbols\KERNELBASE.dll\48E7156D5a000\KERNELBASE.dll not found SYMSRV: http://msdl.microsoft.com/download/symbols/KERNELBASE.dll/48E7156D5a000/KERNELBASE.dll not found DBGENG: C:\Windows\SysWOW64\KERNELBASE.dll - Couldn't map image from disk. DBGENG: KERNELBASE.dll - Partial symbol image load missing image info DBGHELP: Module is not fully loaded into memory. DBGHELP: Searching for symbols using debugger-provided data. SYMSRV: C:\WebSymbols\wkernelbase.pdb\A8683F0C515F469B833E3FA562E0DB251\wkernelbase.pdb not found SYMSRV: http://msdl.microsoft.com/download/symbols/wkernelbase.pdb/A8683F0C515F469B833E3FA562E0DB251/wkernelbase.pdb not found DBGHELP: wkernelbase.pdb - file not found *** WARNING: Unable to verify timestamp for KERNELBASE.dll *** ERROR: Module load completed but symbols could not be loaded for KERNELBASE.dll DBGHELP: KERNELBASE - no symbols loaded
Any ideas? Are the symbols just not available on Microsoft's symbol server?
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请考虑此处提到的解决方法，其中将 syswo64\ntdll.dll 复制到 Syswow64\ntdll32.dll
https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=98781&wa=wsignin1.0
对我有用。
Consider the workaround mentionned here where syswo64\ntdll.dll is copied to Syswow64\ntdll32.dll
https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=98781&wa=wsignin1.0
Works for me.
您是否在 32 位或 64 位系统上以及使用 32 位或 64 位版本的 WinDBG 进行调试？ 您通常必须在从中获取转储的同一体系结构包上进行调试：
http://www.microsoft.com/whdc/devtools/debugging/installx86。 mspx
另外，请查看这篇文章，其中他正在调试在 64 位平台上运行的 32 位应用程序：
< a href="http://blogs.msdn.com/alejacma/archive/2008/07/18/How-to-use-Windbg-to-debug-a-dump-of-a-32bit-.NET-app -running-on-a-x64-machine.aspx" rel="noreferrer">http://blogs.msdn.com/alejacma/archive/2008/07/18/How-to-use-Windbg-to-debug -a-dump-of-a-32bit-.NET-app-running-on-a-x64-machine.aspx
Are you debugging on a 32-bit or 64-bit system, and with the 32 or 64-bit version of WinDBG? You typically have to debug on the same architecture package you took the dump from:
http://www.microsoft.com/whdc/devtools/debugging/installx86.mspx
Also, take a look at this article where he is debugging a 32-bit app running on a 64-bit platform:
http://blogs.msdn.com/alejacma/archive/2008/07/18/How-to-use-Windbg-to-debug-a-dump-of-a-32bit-.NET-app-running-on-a-x64-machine.aspx