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Date: Fri, 24 Sep 2010 11:31:08 -0500
From: Heath Kehoe <hkehoe AT budcat DOT com>
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To: cygwin AT cygwin DOT com
Subject: Re: strange crashes on invocation
References: <4C9B8AC6 DOT 9080808 AT budcat DOT com> <4C9BB392 DOT 9070802 AT budcat DOT com> <4C9BE120 DOT 1080701 AT budcat DOT com> <20100924091712 DOT GA18898 AT calimero DOT vinschen DOT de>
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On 9/24/2010 4:17 AM, Corinna Vinschen wrote:
>
> Can you revert to the latest from CVS and try again with this patch applied:
>
> Index: autoload.cc
> ===================================================================
> RCS file: /cvs/src/src/winsup/cygwin/autoload.cc,v
> retrieving revision 1.174
> diff -u -p -r1.174 autoload.cc
> --- autoload.cc	23 Sep 2010 20:18:16 -0000	1.174
> +++ autoload.cc	24 Sep 2010 09:15:40 -0000
> @@ -233,7 +233,7 @@ std_dll_init ()
>   	  dll->handle = h;
>   	}
>         else if (!(func->decoration&  1))
> -	api_fatal ("could not load %W, %E", dll->name);
> +	api_fatal ("could not load %W, %E", dll_path);
>         else
>   	dll->handle = INVALID_HANDLE_VALUE;
>       }
>
> If the error occurs again, what is the path printed in the error
> message?  Is it sane?  Does the directory correspond to your local
> X:\Windows\System32 directory?
>

Done. The crash came back and here's the result:

       1 [main] bclanc 2544! C:\budcat\tools\bin\bclanc.exe: *** fatal 
error - could not load C:\Windows\system32\ws2_32.dll, Win32 error 998
Stack trace:
Frame     Function  Args
00289F34  6102740B  (00289F34, 00000000, 00000000, 00000000)
0028A224  6102740B  (6117AC40, 00008000, 00000000, 6117C997)
0028B254  61004B2B  (6117C084, 0028B270, 00000000, 00000000)
0028B4A4  6100136E  (61053A4A, 00000168, 00000002, 00000002)

The path is correct. I have no explanation why changing from a filename 
to a pathname (and LoadLibrary to LoadLibraryW) would make any 
difference, unless there's a race condition, say if LoadLibrary[W] is a 
bit faster when you give it a full path. That's just speculation, of 
course. But the intermittent nature of this crash (1 in 500ish 
invocations) would also seem to point to a race condition of some kind.

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