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Date:      Sat, 13 Sep 1997 09:18:53 +0100 (BST)
From:      Scot Elliott <scot@poptart.org>
To:        freebsd-isp@freebsd.org
Subject:   Kernel panics when the root directory is executed
Message-ID:  <Pine.BSF.3.91.970913090731.3617B-100000@homer.duff-beer.com>

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I've been wondering why my maching hangs when I'm typing frantically and 
I discovered why the other day...  sometimes when I try to do a cd .., 
the cd bit gets missed and I end up typing just .., which tries to 
execute that directory.  But it only does it if I've got ~/bin in my 
path.  If I type 'which ..' I get ~/bin/.. as the result.  This also 
happens if I just execute '/', ie. the root directory.  The panic that 
the kernel throws is:

panic: ufs_lock : recursive lock not excepted, pid: ...


This is quite scary, because we have users on this machine with no root 
access, but they're able to halt our machine whenever they want to.  I 
guess this would be very scary for an ISP offering shell accounts.

My setup is:

FreeBSD Billy.poptart.org 2.2-STABLE FreeBSD 2.2-STABLE #0: Sat Aug  2 00:17:32
BST 1997     scot@Billy.poptart.org:/usr/src/sys/compile/IDE  i386  

The shell in question is bash v2.00.0(0)-release

Any ideas?  Is this fixed in a later release of the OS?


Thanks in advance.
Scot

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Scot Elliott		scot@poptart.org	Tel: +44 (0)181 9322042
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