From: Ahmed S. Darwish <darwish.07@gmail.com>
Date: Thu, 20 Mar 2008 00:00:51 +0000 (-0700)
Subject: smack: do not dereference NULL ipc object
X-Git-Tag: v2.6.25-rc7~84
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1d252fb870aa9cd227c4beb1a226ecd434f57f28;p=pandora-kernel.git

smack: do not dereference NULL ipc object

In the SYSV ipc msgctl(),semctl(),shmctl() family, if the user passed *_INFO
as the desired operation, no specific object is meant to be controlled and
only system-wide information is returned.  This leads to a NULL IPC object in
the LSM hooks if the _INFO flag is given.

Avoid dereferencing this NULL pointer in Smack ipc *ctl() methods.

Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com>
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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