Timing related crash when unloading a DLL?

Posted by fbrereto on Stack Overflow See other posts from Stack Overflow or by fbrereto
Published on 2010-05-28T20:20:19Z Indexed on 2010/05/28 20:22 UTC
Read the original article Hit count: 241

Filed under:

c++

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win32

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race-condition

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dependency-management

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dll-unloading

I know I'm reaching for straws here, but this one is a mystery... any pointers or help would be most welcome, so I'm appealing to those more intelligent than I:

We have a crash exhibited in our release binaries only. The crash takes place as the binary is bringing itself down and terminating sub-libraries upon which it depends. Its ability to be reproduced is dependent on the machine- some are 100% reliable in reproducing the crash, some don't exhibit the issue at all, and some are in between. The crash is deep within one of the sublibraries, and there is a good likelihood the stack is corrupt by the time the rubble can be brought into a debugger (MSVC 2008 SP1) to be examined. Running the binary under the debugger prevents the bug from happening, as does remote debugging, as does (of all things) connecting to the machine via VNC. We have tried to install the Microsoft Driver Development Kit, and doing so also squelches the bug.

What would be the next best place to look? What tools would be best in this circumstance? Does it sound like a race condition, or something else?

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