From 171d73b2f89f57d6696d0aaf42fd5ff8ae19801f Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Thu, 25 Feb 2010 20:38:35 +0000 Subject: [PATCH] Btrfs: kfree correct pointer during mount option parsing commit da495ecc0fb096b383754952a1c152147bc95b52 upstream. We kstrdup the options string, but then strsep screws with the pointer, so when we kfree() it, we're not giving it the right pointer. Tested-by: Andy Lutomirski Signed-off-by: Chris Mason Signed-off-by: Greg Kroah-Hartman --- fs/btrfs/super.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 8a1ea6e64575a..f8b4521de9075 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -128,7 +128,7 @@ int btrfs_parse_options(struct btrfs_root *root, char *options) { struct btrfs_fs_info *info = root->fs_info; substring_t args[MAX_OPT_ARGS]; - char *p, *num; + char *p, *num, *orig; int intarg; int ret = 0; @@ -143,6 +143,7 @@ int btrfs_parse_options(struct btrfs_root *root, char *options) if (!options) return -ENOMEM; + orig = options; while ((p = strsep(&options, ",")) != NULL) { int token; @@ -280,7 +281,7 @@ int btrfs_parse_options(struct btrfs_root *root, char *options) } } out: - kfree(options); + kfree(orig); return ret; } -- 2.47.2