From: Li Zefan <lizf@cn.fujitsu.com>
Date: Thu, 9 Dec 2010 07:47:56 +0000 (+0800)
Subject: tracing: Fix preempt count leak
X-Git-Tag: v2.6.37.1~172
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=397435355c1704173b300025e657c5a32ebab210;p=pandora-kernel.git

tracing: Fix preempt count leak

commit 1dbd1951f39e13da579ffe879cce19586d0462de upstream.

While running my ftrace stress test, this showed up:

BUG: sleeping function called from invalid context at mm/mmap.c:233
...
note: cat[3293] exited with preempt_count 1

The bug was introduced by commit 91e86e560d0b3ce4c5fc64fd2bbb99f856a30a4e
("tracing: Fix recursive user stack trace")

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
LKML-Reference: <4D0089AC.1020802@cn.fujitsu.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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