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Message-ID: <alpine.DEB.1.10.0901142056470.22004@gandalf.stny.rr.com>
Date: Wed, 14 Jan 2009 20:57:53 -0500 (EST)
From: Steven Rostedt <rostedt@...dmis.org>
To: LKML <linux-kernel@...r.kernel.org>
cc: Ingo Molnar <mingo@...e.hu>,
Frédéric Weisbecker <fweisbec@...il.com>,
Li Zefan <lizf@...fujitsu.com>,
Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] tracing/ftrace: add missing unlock in
register_stat_tracer()
Ingo,
The following patch is in:
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace.git
branch: tip/devel
Li Zefan (1):
tracing/ftrace: add missing unlock in register_stat_tracer()
----
kernel/trace/trace_stat.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
---------------------------
commit 6af81ac4701bf80dde4b723f28a777daefdf512c
Author: Li Zefan <lizf@...fujitsu.com>
Date: Thu Jan 15 09:30:52 2009 +0800
tracing/ftrace: add missing unlock in register_stat_tracer()
We should unlock all_stat_sessions_mutex before returning failure.
Signed-off-by: Li Zefan <lizf@...fujitsu.com>
Signed-off-by: Steven Rostedt <srostedt@...hat.com>
diff --git a/kernel/trace/trace_stat.c b/kernel/trace/trace_stat.c
index cb29282..8669f3c 100644
--- a/kernel/trace/trace_stat.c
+++ b/kernel/trace/trace_stat.c
@@ -73,8 +73,10 @@ int register_stat_tracer(struct tracer_stat *trace)
/* Already registered? */
mutex_lock(&all_stat_sessions_mutex);
list_for_each_entry_safe(node, tmp, &all_stat_sessions, session_list) {
- if (node->ts == trace)
+ if (node->ts == trace) {
+ mutex_unlock(all_stat_sessions_mutex);
return -EINVAL;
+ }
}
mutex_unlock(&all_stat_sessions_mutex);
--
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