once more unto the breech - still hanging, but I have a little more info.

[Peter Rehley]

On Jan 11, 2006, at 2:19 PM, Peter Rehley wrote:

>
> On Jan 10, 2006, at 6:23 PM, Christopher Faylor wrote:
>
>>
<snip>
>> <obligatory-often-ignored-request>
>> So, please try a snapshot and report problems.  Please indicate  
>> whether
>> the problem is a regression from 1.5.18 or previous snapshots and  
>> please
>> respond to this message when reporting a problem.  Don't start a new
>> thread.  Please always provide cygcheck output even if you think  
>> you've
>> already done it recently.  Please provide exact details to  
>> duplicate a
>> problem - a simple program indicating the problem is ideal.
>> </obligatory-often-ignored-request>
>
> It's a rather difficult bug to reproduce, but I'm still seeing the  
> hang up with the test_configure script.  I seem to be getting it  
> about once every 2000 iterations of the program.  The thread where  
> I mentioned this problem is http://cygwin.com/ml/cygwin/2005-11/ 
> msg00000.html
>
> The script can be restarted by using the process.exe program  
> (http://www.beyondlogic.org/solutions/processutil/processutil.htm)  
> using the restart option.
>
> When I run the test_configure script, after about 2000 iterations  
> it will hang.  If I do a ps -ef I can see several running sh  
> commands from the script. I pick the one that doesn't have any  
> children and cat /proc/<pid>/cmdline and it show <defunct>.  Then I  
> cat the winpid and use the process program to restart.  This causes  
> things to start running again.
>
> Occasionally I will see that there is a child process (i.e. sort,  
> not another sh)  If I try to cat the cmdline the cat process seems  
> to hang;  I can only kill cat with the task manager.  However, I  
> can still cat the winpid and when I do the process restart, things  
> start running again.  This behavior is fairly new.  I have noted  
> that it was the 12/22/2005 snapshot.  But I didn't try the 12/21,  
> 12/20 or 12/19 snapshots.
>
> The machine is a windows 2000 with sp4.  Dual processor at 933Mhz.
>

I tried the 20060206 snapshot, and managed to get an strace log when  
it hung and after I resumed it.  I couldn't get gdb to attach to the  
hung process though so I couldn't get any gdb information.

Also in the snapshot I noticed new behavior.  When I ran the test  
script and did a build (bash conf) in another window, the test script  
segfaulted.  I have the stackdump of that sh.exe plus the addr2line  
output.  In the 20060205 snapshot this didn't occur.

Peter

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