how to crash bash in two easy ways
bashbug called sendmail, a link to exim4 which silently ignored the following (which is a bug in its own right) so I'll post this manually instead. I found two one-liners which crash bash. Configuration Information [Automatically generated, do not change]: Machine: x86_64 OS: linux-gnu Compiler: gcc Compilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='x86_64' - DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='x86_64-pc-linux-gnu' - DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' - DSHELL -DHAVE_CONFIG_H -I. -I../bash -I../bash/include -I../bash/ lib -g -O2 -Wall uname output: Linux Rackspace-PBR 2.6.31-19-generic #56-Ubuntu SMP Thu Jan 28 02:39:34 UTC 2010 x86_64 GNU/Linux Machine Type: x86_64-pc-linux-gnu Bash Version: 4.0 Patch Level: 33 Release Status: release Description: I was looking for the simplest way to clear the entire aliases array and found a crash bug instead. I Checked a few other cases and found a second case that crashes bash as well. Bash dies with a segmentation fault anytime I type in either "BASH_ALIASES=" or "BASH_CMDS=" Repeat-By: Type "B A S H _ A L I A S E S =" (without spaces) and then enter, at the command line. Or, "B A S H _ C M D S =" (without spaces) for a fun variant. Fix: My fix is sending you guys this 'bashbug' crash report. Then re-sending it so it really got to you all. Feel free to follow up if you have any questions. -pbr
Re: how to crash bash in two easy ways
On Feb 22, 10:00 am, Chet Ramey wrote: > On 2/22/10 5:30 AM, pbr wrote: > > > Bash dies with a segmentation fault anytime I type in either > > "BASH_ALIASES=" or "BASH_CMDS=" > > This was fixed in bash-4.1. > > Chet > -- > ``The lyf so short, the craft so long to lerne.'' - Chaucer > ``Ars longa, vita brevis'' - Hippocrates > Chet Ramey, ITS, CWRU c...@case.edu http://cnswww.cns.cwru.edu/~chet/ Awesome... now to figure out why it hasn't yet been updated in Ubuntu 9.10... THANKS Chet, and Christopher, for your quick replies. Kind regards, -pbr http://reiber.org
