From: Patrick Donnelly <batrick@batbytes.com>
Date: Sun, 12 Jul 2015 22:51:52 +0000 (-0400)
Subject: tty: add missing rcu_read_lock for task_pgrp
X-Git-Tag: omap-for-v4.3/fixes-merge-window~43^2~63
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6719693ca2efb0f04654d05768ee299e87e1694b;p=pandora-kernel.git

tty: add missing rcu_read_lock for task_pgrp

task_pgrp requires an rcu or tasklist lock to be obtained if the returned pid
is to be dereferenced, which kill_pgrp does. Obtain an RCU lock for the
duration of use.

Signed-off-by: Patrick Donnelly <batrick@batbytes.com>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

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