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

Thu Feb 9 03:54:00 GMT 2006

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.
>
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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