From: Li Zefan <lizf@cn.fujitsu.com>
Date: Thu, 7 May 2009 07:11:15 +0000 (+0800)
Subject: tracing/events: fix concurrent access to ftrace_events list, fix
X-Git-Tag: v2.6.31-rc1~401^2~64
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d94fc523f3c35bd8013f04827e94756cbc0212f4;p=pandora-kernel.git

tracing/events: fix concurrent access to ftrace_events list, fix

In filter_add_subsystem_pred() we should release event_mutex before
calling filter_free_subsystem_preds(), since both functions hold
event_mutex.

[ Impact: fix deadlock when writing invalid pred into subsystem filter ]

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: tzanussi@gmail.com
Cc: a.p.zijlstra@chello.nl
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
LKML-Reference: <4A028993.7020509@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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