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Date:	Mon, 25 Jun 2012 09:34:16 +0200
From:	marco atzeri <marco DOT atzeri AT gmail DOT com>
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To:	cygwin AT cygwin DOT com
Subject:	Re: crash on latest cygwin snapshot
References:	<4FE786DA DOT 2050208 AT gmail DOT com> <20120625043110 DOT GA28607 AT ednor DOT casa DOT cgf DOT cx>
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On 6/25/2012 6:31 AM, Christopher Faylor wrote:
> On Sun, Jun 24, 2012 at 11:30:02PM +0200, marco atzeri wrote:
>> Cgf, Corinna,
>>
>> while building latest atlas  I hit a bug that is crashing all the
>> running cygwin process.
>> It crashes on 20120619 snapshot and also latest cvs source.
>> No issue on 20120611 snapshot.
>>
>> The binary to replicate and a extract of the strace's is at
>> http://matzeri.altervista.org/works/atlas/
>>
>> on W7/64 just run this command
>> ---------------------------------------------------------------------
>>   ./xprobe_comp -v 2 -o atlconf.txt -O 9 -A 25 -Si nof77 0 -V 448  -Fa
>> ic '-fno-common' -Fa sm '-fno-common' -Fa dm '-fno-common' -Fa sk
>> '-fno-common' -Fa dk '-fno-common' -Fa xc '-fno-common' -Fa gc
>> '-fno-common' -Fa if '-fno-common' -b 32 -d b .
>> ----------------------------------------------------------------------
>>
>> no stackdump is generated.
>
> I think I need a better test case.

I was afraid of that.
xprobe_comp is a sytem/processor probe and it is really
resource consuming during its normal run.

I tried to strace but it produces an enormous amount of data

$ ls -sh1  xprobe_comp.strace*
330M xprobe_comp.strace_fail
761M xprobe_comp.strace_good

and there is no guarantee that the root cause is traced.
>
> No matter what DLL I use, if I put the above in a shell script (adding a
> '\' to the end of each line) and execute it, I get the below output and
> my process table fills up /usr/bin/sh processes.
>
> If I reduce my PATH to just /usr/bin, the xprobe_comp sits there and I
> get lots and lots of /usr/bin/sh processes showing up in ps output and
> eventually I have to power-cycle my system to recover.
>
> cgf
>
> The script:
>
> #!/bin/sh
> ./xprobe_comp -v 2 -o atlconf.txt -O 9 -A 25 -Si nof77 0 -V 448  -Fa \
> ic '-fno-common' -Fa sm '-fno-common' -Fa dm '-fno-common' -Fa sk \
> '-fno-common' -Fa dk '-fno-common' -Fa xc '-fno-common' -Fa gc \
> '-fno-common' -Fa if '-fno-common' -b 32 -d b .
>
> The output:
>
> User Override Compilers:
>     'none' : 'none' '-fno-common'
>     'none' : 'none' '-fno-common'
>     'none' : 'none' '-fno-common'
>     'none' : 'none' '-fno-common'
>     'none' : 'none' '-fno-common'
>     'none' : 'none' '-fno-common'
>     'none' : 'none' '-fno-common'
>     'none' : 'none' '-fno-common'

for what I see on my log, it crash after that
and before of:

>
> sh: -c: line 0: syntax error near unexpected token `('
> sh: -c: line 0: `find $HOME/local /cygdrive/c/Program\ Files\ (x86)/PC\ Connectivity\ Solution /cygdrive/c/Program\
>   Files\ (x86)/NVIDIA\ Corporation/PhysX/Common /cygdrive/c/Program\ Files/Common\ Files/Microsoft\ Shared/Windows\
> Live /cygdrive/c/Program\ Files\ (x86)/Common\ Files/Microsoft\ Shared/Windows\ Live /usr/bin /usr/local/bin /cygdr
> ive/c/Windows/system32 /cygdrive/c/Windows /cygdrive/c/Windows/System32/Wbem /cygdrive/c/Windows/System32/WindowsPo
> werShell/v1.0 /cygdrive/c/Program\ Files\ (x86)/Windows\ Live/Shared /cygdrive/c/Program\ Files/WIDCOMM/Bluetooth\
> Software /cygdrive/c/Program\ Files/WIDCOMM/Bluetooth\ Software/syswow64 /cygdrive/c/Program\ Files\ (x86)/software
> .jessies.org/terminator/Resources/terminator/bin -name '*gcc*' -exec ./xisgcc '{}' \; > /tmp/t4580.0 2>&1'
>
> ierr=256 in command='find $HOME/local /cygdrive/c/Program\ Files\ (x86)/PC\ Connectivity\ Solution /cygdrive/c/Prog
> ram\ Files\ (x86)/NVIDIA\ Corporation/PhysX/Common /cygdrive/c/Program\ Files/Common\ Files/Microsoft\ Shared/Windo
> ws\ Live /cygdrive/c/Program\ Files\ (x86)/Common\ Files/Microsoft\ Shared/Windows\ Live /usr/bin /usr/local/bin /c
> ygdrive/c/Windows/system32 /cygdrive/c/Windows /cygdrive/c/Windows/System32/Wbem /cygdrive/c/Windows/System32/Windo
> wsPowerShell/v1.0 /cygdrive/c/Program\ Files\ (x86)/Windows\ Live/Shared /cygdrive/c/Program\ Files/WIDCOMM/Bluetoo
> th\ Software /cygdrive/c/Program\ Files/WIDCOMM/Bluetooth\ Software/syswow64 /cygdrive/c/Program\ Files\ (x86)/soft
> ware.jessies.org/terminator/Resources/terminator/bin -name '*gcc*' -exec ./xisgcc '{}' \;'!
>
> OUTPUT:
> =======
> cat: /tmp/t4580.0: No such file or directory
>

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