[PATCH] Btrfs: fix memory leak in btrfs_parse_early_options()

Ilya Dryomov
2011-01-17T19:39:15Z

strsep() modifies the string pointer, therefore freeing it instead of
original one results in a small memory leak. Fixes kmemleak warning.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
---
fs/btrfs/super.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 883c6fa..291b630 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -277,7 +277,7 @@ static int btrfs_parse_early_options(const char *options, fmode_t flags,
struct btrfs_fs_devices **fs_devices)
{
substring_t args[MAX_OPT_ARGS];
- char *opts, *p;
+ char *opts, *opts_orig, *p;
int error = 0;
int intarg;

@@ -288,7 +288,7 @@ static int btrfs_parse_early_options(const char *options, fmode_t flags,
* strsep changes the string, duplicate it because parse_options
* gets called twice
*/
- opts = kstrdup(options, GFP_KERNEL);
+ opts = opts_orig = kstrdup(options, GFP_KERNEL);
if (!opts)
return -ENOMEM;

@@ -326,7 +326,7 @@ static int btrfs_parse_early_options(const char *options, fmode_t flags,
}

out_free_opts:
- kfree(opts);
+ kfree(opts_orig);
out:
/*
* If no subvolume name is specified we use the default one. Allocate
--
1.7.2.3