Btrfs: fix memory leak in btrfs_parse_early_options()

Don't leak subvol_name string in case multiple subvol= options are given. "The lastest option is effective" behavior (consistent with subvolid= and subvolrootid= options) is preserved. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

Btrfs: fix memory leak in btrfs_parse_early_options()
Don't leak subvol_name string in case multiple subvol= options are given. "The lastest option is effective" behavior (consistent with subvolid= and subvolrootid= options) is preserved. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Ilya Dryomov
1 parent 7fd2ae21a4
Showing 1 changed file with 1 additions and 0 deletions Side-by-side Diff
fs/btrfs/super.c
@@ -448,6 +448,7 @@
 		token = match_token(p, tokens, args);
 		switch (token) {
 		case Opt_subvol:
+			kfree(*subvol_name);
 			*subvol_name = match_strdup(&args[0]);
 			break;
 		case Opt_subvolid:
...	...	@@ -448,6 +448,7 @@
448	448	token = match_token(p, tokens, args);
449	449	switch (token) {
450	450	case Opt_subvol:
	451	+ kfree(*subvol_name);
451	452	*subvol_name = match_strdup(&args[0]);
452	453	break;
453	454	case Opt_subvolid: