From: Oleg Nesterov <oleg@redhat.com>
Date: Fri, 29 Jul 2011 01:26:32 +0000 (-0700)
Subject: proc_fork_connector: a lockless ->real_parent usage is not safe
X-Git-Tag: v3.1-rc1~24^2~34
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9e8f90dfe58eb19140bc66655170c7aef9eadbf2;p=pandora-kernel.git

proc_fork_connector: a lockless ->real_parent usage is not safe

proc_fork_connector() uses ->real_parent lockless.  This is not safe if
copy_process() was called with CLONE_THREAD or CLONE_PARENT, in this case
the parent != current can go away at any moment.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Vladimir Zapolskiy <vzapolskiy@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Evgeniy Polyakov <zbr@ioremap.net>
Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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