From: Marc Ballarin <Ballarin.Marc@gmx.de>
To: linux-kernel@vger.kernel.org
Subject: Re: Interesting race condition...
Date: Sat, 24 Jul 2004 13:40:59 +0000 (UTC) [thread overview]
Message-ID: <loom.20040724T152713-574@post.gmane.org> (raw)
In-Reply-To: <200407240313.19053.rob@landley.net>
Rob Landley <rob <at> landley.net> writes:
> Oh I can't reproduce it either. (Maybe if I set some kind of loop and left
> it running for a few days...)
I could reproduce it on an otherwise idle system (2 GHz Athlon, kernel 2.6.7).
On a loaded system the bug did not occur, which certainly indicates a race
condition.
Using the following Bash script, the bug appeared 23 times in 122,221
iterations:
while [ 1 ];do
ps ax | grep hack >> TEST
done
The bug *seems* to be in bash, since an equivalent script in tcsh had no
problems:
while ( 1 )
ps ax | grep hack >> TEST2
end
This issue has the potential to break a lot of shell scripts in an almost
undebugable way. Should someone file a bug report via 'bashbug'?
Marc
next prev parent reply other threads:[~2004-07-24 13:50 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-23 3:04 Rob Landley
2004-07-23 7:33 ` Barry K. Nathan
2004-07-23 7:56 ` Hugo Mills
2004-07-24 8:13 ` Rob Landley
2004-07-24 13:40 ` Marc Ballarin [this message]
2004-07-26 16:04 ` David Weinehall
2004-07-26 17:20 ` Marc Ballarin
2004-07-23 10:01 ` P. Benie
2004-07-24 8:17 ` Rob Landley
2004-07-24 9:08 ` P. Benie
2004-07-27 20:40 ` Bill Davidsen
2004-07-28 8:00 ` Paul Jackson
2004-08-04 20:03 ` Robert White
2004-08-04 20:42 ` Roger Luethi
2004-07-28 8:05 ` Paul Jackson
2004-07-28 11:54 ` Marc Ballarin
2004-07-28 16:46 ` Rob Landley
2004-07-28 16:42 ` Rob Landley
2004-07-28 17:08 ` Tristan Wibberley
2004-07-29 23:56 ` Roger Luethi
2004-07-30 0:18 ` Jesper Juhl
2004-07-30 0:22 ` Jesper Juhl
2004-07-30 8:27 ` Marc Ballarin
2004-07-30 8:38 ` Roger Luethi
2004-08-20 10:15 ` Lee Revell
2004-08-20 12:51 ` Marc Ballarin
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