linux-kernel - [PATCH] orangefs: fix memory leak of string 'new' on exit path

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Message-Id: <20161202151806.23937-1-colin.king@canonical.com>
Date:   Fri,  2 Dec 2016 15:18:06 +0000
From:   Colin King <colin.king@...onical.com>
To:     Mike Marshall <hubcap@...ibond.com>
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH] orangefs: fix memory leak of string 'new' on exit path

From: Colin Ian King <colin.king@...onical.com>

allocates string 'new' is not free'd on the exit path when
cdm_element_count <= 0. Fix this by kfree'ing it.

Fixes CoverityScan CID#1375923 "Resource Leak"

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 fs/orangefs/orangefs-debugfs.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/orangefs/orangefs-debugfs.c b/fs/orangefs/orangefs-debugfs.c
index 38887cc..b5dbc9c 100644
--- a/fs/orangefs/orangefs-debugfs.c
+++ b/fs/orangefs/orangefs-debugfs.c
@@ -671,8 +671,10 @@ int orangefs_prepare_debugfs_help_string(int at_boot)
 		 */
 		cdm_element_count =
 			orangefs_prepare_cdm_array(client_debug_array_string);
-		if (cdm_element_count <= 0)
+		if (cdm_element_count <= 0) {
+			kfree(new);
 			goto out;
+		}
 
 		for (i = 0; i < cdm_element_count; i++) {
 			strlcat(new, "\t", string_size);
-- 
2.10.2