From: Oleg Nesterov <oleg@redhat.com>
Date: Wed, 10 Dec 2014 23:55:25 +0000 (-0800)
Subject: exit: pidns: alloc_pid() leaks pid_namespace if child_reaper is exiting
X-Git-Tag: omap-for-v3.19/fixes-rc1~142^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=24c037ebf5723d4d9ab0996433cee4f96c292a4d;p=pandora-kernel.git

exit: pidns: alloc_pid() leaks pid_namespace if child_reaper is exiting

alloc_pid() does get_pid_ns() beforehand but forgets to put_pid_ns() if it
fails because disable_pid_allocation() was called by the exiting
child_reaper.

We could simply move get_pid_ns() down to successful return, but this fix
tries to be as trivial as possible.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Aaron Tomlin <atomlin@redhat.com>
Cc: Pavel Emelyanov <xemul@parallels.com>
Cc: Serge Hallyn <serge.hallyn@ubuntu.com>
Cc: Sterling Alexander <stalexan@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

Reading git-diff-tree failed