Hanging at GetModuleFileName in inside_kernel function

[Peter Rehley]

On Feb 23, 2006, at 6:27 PM, Christopher Faylor wrote:

> On Thu, Feb 23, 2006 at 03:43:25PM -0800, Peter Rehley wrote:
>> On Feb 23, 2006, at 10:13 AM, Dave Korn wrote:
>>
>>> On 23 February 2006 16:20, Peter Rehley wrote:
>>>
>>>> Yeah, I saw that change, and I tried yesterdays snapshot but it  
>>>> still
>>>> hung.  I also did some more googling and found that someone  
>>>> submitted
>>>> a patch a few years ago.  The patch checked to see if it was inside
>>>> the ntdll.dll by looking at the handle.
>>>> http://www.cygwin.com/ml/cygwin-patches/2003-q2/msg00004.html
>>>>
>>>> I found this google too.
>>>> http://blogs.msdn.com/oldnewthing/archive/2004/01/28/63880.aspx
>>>>
>>>> I'm going to try that patch today and see what happens.   
>>>> Christopher
>>>> didn't apply it because it was a bandage and didn't really fix the
>>>> bigger problem.
>>
>> I tried putting the patch in place, and it stopped hanging at the
>> place I reported.  I had print statements to verify that it went
>> through the section.  However, the program still hung at some point.
>> I tracked down a couple of other GMFN calls that used non-null
>> handles and tried using the technique that the patch had.
>
> Does the latest snapshot behave any differently?  It has a temporary
> patch which stops cygwin from suspending (for long) when the  
> current IP
> is in the cygwin DLL itself.

It seems like an improvement.  It didn't hang, but after about 4000  
iterations of the test script it got a segmentation fault.  It ran  
for 12 hours with another configure script in a separate window or  
about 11 hours and 45 minutes longer than before.  This is with the  
20060227 snapshot.

Attached is the stackdump.

Peter

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