From: Jiri Slaby <jslaby@suse.cz>
Date: Sat, 14 Nov 2009 16:37:04 +0000 (+0100)
Subject: rlimits: do security check under task_lock
X-Git-Tag: v2.6.36-rc1~300^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=86f162f4c75ceb6daf43165469eeeca1bc3d4639;p=pandora-kernel.git

rlimits: do security check under task_lock

Do security_task_setrlimit under task_lock. Other tasks may change
limits under our hands while we are checking limits inside the
function. From now on, they can't.

Note that all the security work is done under a spinlock here now.
Security hooks count with that, they are called from interrupt context
(like security_task_kill) and with spinlocks already held (e.g.
capable->security_capable).

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: James Morris <jmorris@namei.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
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