From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Date: Fri, 3 Jan 2014 11:42:18 +0000 (+0900)
Subject: drm/i915: Fix refcount leak and possible NULL pointerdereference.
X-Git-Tag: v3.14-rc1~47^2~16^2~32
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3ec2f427e6f82b9b8f9b18dd2c758b864385df39;p=pandora-kernel.git

drm/i915: Fix refcount leak and possible NULL pointerdereference.

Since get_pid_task() grabs a reference on the task_struct, we have to drop the
refcount after reading that task's comm name. Use pid_task() with RCU instead.

Also, avoid directly reading like pid_task()->comm because
pid_task() will return NULL if the task have already exit()ed.

This patch fixes both problems.

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

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