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From: Kamil Dudka <kdudka@redhat.com>
To: zsh-workers@zsh.org
Subject: 'cd' built-in crashed zsh on a broken file system
Date: Tue, 20 Jan 2015 13:35:14 +0100	[thread overview]
Message-ID: <1874234.7FAblKt7ne@kdudka.brq.redhat.com> (raw)

The following bug report describes a crash of the 'cd' built-in of zsh:

https://bugzilla.redhat.com/1183238

The root cause was probably an inconsistent state of the sshfs file system 
after resume from suspend-to-ram.  However, the segmentation fault suggests 
there might be some insufficient error handling in zsh code.

unmeta() was called with NULL as pwd at the following line:

http://sourceforge.net/p/zsh/code/ci/638bfa93/tree/Src/builtin.c#l807

It is not clear to me why pwd was NULL after the return from cd_new_pwd()
and I was not able to trigger the bug myself to debug it further.  The full 
backtrace is available here:

https://bugzilla.redhat.com/attachment.cgi?id=981010

Kamil


             reply	other threads:[~2015-01-20 12:35 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-20 12:35 Kamil Dudka [this message]
2015-01-20 18:28 ` Bart Schaefer
2015-01-20 20:34   ` Peter Stephenson
2015-01-20 21:57     ` Bart Schaefer
2015-01-23 13:31     ` Kamil Dudka
2015-01-24 19:09     ` Mikael Magnusson
2015-01-24 21:56       ` Mikael Magnusson
2015-01-25  3:54       ` Bart Schaefer
2015-01-25 17:54       ` Peter Stephenson

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