ext4: fix possible memory leak in ext4_remount()

'orig_data' is malloced in ext4_remount() and should be freed before leaving from the error handling cases, otherwise it will cause memory leak. Signed-off-by: Wei Yongjun <[email protected]> Signed-off-by: "Theodore Ts'o" <[email protected]> Reviewed-by: Lukas Czerner <[email protected]> Cc: [email protected]
cluon · Mar 2, 2013 · 3e36a16 · 3e36a16
1 parent df05c1b
commit 3e36a16
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
@@ -4543,6 +4543,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
 			if (!old_opts.s_qf_names[i]) {
 				for (j = 0; j < i; j++)
 					kfree(old_opts.s_qf_names[j]);
+				kfree(orig_data);
 				return -ENOMEM;
 			}
 		} else