linux-kernel - [tip:tracing/blktrace] blktrace: fix possible memory leak

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Date:	Fri, 20 Mar 2009 10:25:52 GMT
From:	Li Zefan <lizf@...fujitsu.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, acme@...hat.com, hpa@...or.com,
	mingo@...hat.com, lizf@...fujitsu.com, jens.axboe@...cle.com,
	fweisbec@...il.com, rostedt@...dmis.org, tglx@...utronix.de,
	mingo@...e.hu
Subject: [tip:tracing/blktrace] blktrace: fix possible memory leak

Commit-ID:  86d7c7acc6b5ec500f319120f7e72ea62fb6252d
Gitweb:     http://git.kernel.org/tip/86d7c7acc6b5ec500f319120f7e72ea62fb6252d
Author:     Li Zefan <lizf@...fujitsu.com>
AuthorDate: Fri, 20 Mar 2009 09:47:30 +0800
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Fri, 20 Mar 2009 11:20:04 +0100

blktrace: fix possible memory leak

When we failed to create "block" debugfs dir, we should do some
cleanups.

Signed-off-by: Li Zefan <lizf@...fujitsu.com>
Cc: Jens Axboe <jens.axboe@...cle.com>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Steven Rostedt <rostedt@...dmis.org>
Acked-by: Frederic Weisbecker <fweisbec@...il.com>
LKML-Reference: <49C2F5B2.8000800@...fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 kernel/trace/blktrace.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index b171778..fb3bc53 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -432,7 +432,7 @@ int do_blk_trace_setup(struct request_queue *q, char *name, dev_t dev,
 	if (!blk_tree_root) {
 		blk_tree_root = debugfs_create_dir("block", NULL);
 		if (!blk_tree_root)
-			return -ENOMEM;
+			goto err;
 	}
 
 	dir = debugfs_create_dir(buts->name, blk_tree_root);
--
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