为什么 WinDBG 在转储中显示不匹配的 FileVersion？

Question

TL;DR

为什么 WinDBG lmv显示两个版本信息字段（当我知道没有其他工具这样做时）以及在哪些情况下这些字段会有所不同？

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背景：我有我们应用程序的实时转储（来自死锁）。符号已正确加载，我能够将死锁追溯到 Microsoft 的 pdm.dll（用于我们的 vbscript 引擎的“进程调试管理器”）。

然后我想检查在生产站点的会话中加载了该 DLL 的哪个版本：

0:000> lmv m pdm
start    end        module name
51860000 518b8000   pdm      # (pdb symbols)          d:\symcache\pdm.pdb\7BE601EDE9234816B72B49DA4A25DF042\pdm.pdb
    Loaded symbol image file: pdm.dll
    Image path: C:\Program Files (x86)\Common Files\Microsoft Shared\VS7DEBUG\pdm.dll
    Image name: pdm.dll
    Timestamp:        Tue Jul 29 16:46:11 2008 (488F2D33)
    CheckSum:         000663E0
    ImageSize:        00058000
??  File version:     9.0.30729.1
??  Product version:  9.0.30729.1
    File flags:       0 (Mask 3F)
    File OS:          4 Unknown Win32
    File type:        2.0 Dll
    File date:        00000000.00000000
    Translations:     0409.04b0
    CompanyName:      Microsoft Corporation
    ProductName:      Microsoft® Visual Studio .NET
    InternalName:     pdm.dll
    OriginalFilename: pdm.dll
??  ProductVersion:   7.10.3077
??  FileVersion:      7.10.3077
    FileDescription:  Process Debug Manager
    LegalCopyright:   Copyright© Microsoft Corporation.  All rights reserved.

如您所见，文件和产品版本显示了两次，但它们在转储中不匹配！

当我在我的机器上交叉检查（显然，查看时间戳和校验和！）运行 iexplore 进程的相同文件时：

0:043> lmv m pdm
start    end        module name
3efa0000 3eff8000   pdm        (pdb symbols)          c:\windows\symbols\martin-cache\pdm.pdb\415D0A165EB24613BC01CE516512062C2\pdm.pdb
    Loaded symbol image file: C:\Program Files (x86)\Internet Explorer\pdm.dll
    Image path: C:\Program Files (x86)\Internet Explorer\pdm.dll
    Image name: pdm.dll
    Timestamp:        Tue Jul 29 16:46:11 2008 (488F2D33)
    CheckSum:         000663E0
    ImageSize:        00058000
    File version:     9.0.30729.1
    Product version:  9.0.30729.1
    File flags:       0 (Mask 3F)
    File OS:          4 Unknown Win32
    File type:        2.0 Dll
    File date:        00000000.00000000
    Translations:     0409.04b0
    CompanyName:      Microsoft Corporation
    ProductName:      Microsoft® Visual Studio® 2008
    InternalName:     pdm.dll
    OriginalFilename: pdm.dll
    ProductVersion:   9.0.30729.1
    FileVersion:      9.0.30729.1 built by: SP
    FileDescription:  Process Debug Manager
    LegalCopyright:   © Microsoft Corporation. All rights reserved.

版本信息匹配。

Answer 1

lmv 显示资源文件中定义的字符串，

我不知道为什么两组文件/产品版本名称相同，除了一些空格。

0:041> lmv m kernel32
start    end        module name
753e0000 754f0000   kernel32   (deferred)             
    Image path: C:\Windows\SysWOW64\kernel32.dll
    Image name: kernel32.dll
    Timestamp:        Fri Aug 02 03:53:25 2013 (51FB1115)
    CheckSum:         00111A9F
    ImageSize:        00110000
    File version:     6.1.7601.18229
    Product version:  6.1.7601.18229
    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:     kernel32
    OriginalFilename: kernel32
    ProductVersion:   6.1.7601.18229
    FileVersion:      6.1.7601.18229 (win7sp1_gdr.130801-1533)

在您的情况下，您有两个不同的 dll，请查看图像文件路径。

Image path: C:\Program Files (x86)\Common Files\Microsoft Shared\VS7DEBUG\

和

Image path: C:\Program Files (x86)\Internet Explorer

它们在资源部分必须有不同的字符串，winDbg 只能显示它。 由于时间戳相同，因此可能已被篡改。