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    November 01

    VS2003 在push edi 的时候AV

    上个月做一个case的时候，需要激活vs2003的unmanaged debugging. 激活后用f5调试，程序还没有起来，vs2003 IDE就crash了 :(
     
    当时比较忙，一直留到今天才来仔细观察这个问题. windbg上去后，看到crash的信息如下:
     
    (9ec.dfc): Access violation - code c0000005 (first chance)
    First chance exceptions are reported before any exception handling.
    This exception may be expected and handled.
    好，不就是熟悉的AV么，看看EIP:
     
    0:018> u eip
    AcSpecfc!NS_NatDbgDM::JumpBuffer:
    7150b698 57               push    edi
    恩，push居然都会AV,没天理阿。仔细想想，有两种可能:
    1) IP地址不可读写
    2) ESP不可读写
     
    可是:
     
    0:018> !address eip
        714d0000 : 7150b000 - 00005000
                        Type     01000000 MEM_IMAGE
                        Protect  00000004 PAGE_READWRITE
                        State    00001000 MEM_COMMIT
                        Usage    RegionUsageImage
                        FullPath C:\WINDOWS\AppPatch\AcSpecfc.dll
    0:018> !address esp
        104d0000 : 105cb000 - 00005000
                        Type     00020000 MEM_PRIVATE
                        Protect  00000004 PAGE_READWRITE
                        State    00001000 MEM_COMMIT
                        Usage    RegionUsageStack
                        Pid.Tid  9ec.dfc
    傻了吧。有人知道怎么做么？(提示，该问题在打了win2k3 sp1前不会发生)
     
     
     
     
     
    ==================
    解决方法,对vs2003 IDE进程取消"data execution prevention"保护。关于data execution prevention:
     
     
    不过vs2003居然触发DEP,可以考虑file一个bug了
     
    data execution prevention
     
    1:13 PM | Blog it

    Comments (13)

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    Picture of Anonymous
    jww wrote:
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    Sept. 23
    Picture of Anonymous
    ssqt wrote:
    June 5
    No namewrote:
    May 12
    No namewrote:
    Apr. 13
    No namewrote:
    Jan. 17
    Picture of Anonymous
    天涯歌女 wrote:
    我承认我只看到了AV
    其他一概无视
    Nov. 10
    Picture of Anonymous
    -小培- wrote:
    牛，现在dswl都是ee。
    Nov. 2
    Picture of Anonymous
    putaoefu wrote:
    跟vs2003/unmanaged c++都没太大关系
    跟AcSpecfc.dll关系比较大。因为这个module的memory image缺少了Execute bit，问题就在于为什么会缺少。考虑到AcSpecfc.dll的特殊性，问题可能是由于compatible mode feature 导致的
    Nov. 2
    Picture of Anonymous
    TerrenceYang wrote:
    还想问问看是不是unmanaged c++ coding的时候出错的?
    还是VS.NET 2003 本身的问题?
    Nov. 2
    Picture of Anonymous
    TerrenceYang wrote:
    "GCC的在线重用:

    　　研究发现gcc在堆栈区里放置了可执行的代码作为在线重用之用。然而，关闭这个功能并不产生任何问题，只有部分功能似乎不能使用。"

    给一个引用的引用 http://www.blogercn.com/user1/51/archives/2005/10152.shtml

    可能有相似之处?
    Nov. 2
    Picture of Anonymous
    潇抒 wrote:
    AV,ESP..... 啥意思啦 :(
    Nov. 2
    Picture of Anonymous
    SQUARE_方伟 wrote:
    你写的东西向来不懂
    Nov. 1
    Picture of Anonymous
    Johnonhop wrote:
    (y)
    Nov. 1

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