From: Lucas Nussbaum <lucas@...>
Date: 2005-07-21T21:45:55+09:00
Subject: Re: [BUG] Segmentation fault with a threads/forks script

On Thu, Jul 21, 2005 at 09:28:29PM +0900, Lucas Nussbaum <lucas@lucas-nussbaum.net> wrote:
> Hi,
> 
> I experience a reproducable crash (each time) with prunner.rb at
> http://blop.info/bazaar/prunner.rb. The script starts several commands
> at the same time. When running with a large number of commands, it
> exits with :
> 
> ./prunner.rb:51: [BUG] Segmentation fault
> ruby 1.8.2 (2005-04-11) [i386-linux]
> 
> Aborted
> 
> To reproduce, create a large file with one command per line.
> for i in $(seq 1 2000); do echo hostname done > cmds
> Then run prunner.rb like this :
> cat cmds |head -n 1500 |./prunner.rb
> 1500 can be increased if it doesn't crash for you.
> 
> Of course, I expect it to go wrong at some time, but it could probably
> do this in a cleaner way.
> 
> Can somebody confirm the bug ? Or better, fix it ? :-)

With Ubuntu Breezy's ruby 1.9 package (version 1.9.0+20050623-2), it
crashes with :

*** glibc detected *** free(): invalid pointer: 0x08a9db38 ***
Aborted
-- 
| Lucas Nussbaum
| lucas@lucas-nussbaum.net   http://www.lucas-nussbaum.net/ |
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