[PATCH] fs/affs: fix potential memory leak in option parsing

[Chengguang Xu]

When specifying option 'prefix' multiple times,
current option parsing will cause memory leak.
Hence, call kfree for previous one in this case.

Signed-off-by: Chengguang Xu <cgxu...@gmx.com>
---
 fs/affs/super.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/affs/super.c b/fs/affs/super.c
index e602619..d1ad11a 100644
--- a/fs/affs/super.c
+++ b/fs/affs/super.c
@@ -241,6 +241,7 @@ enum {
                        affs_set_opt(*mount_opts, SF_NO_TRUNCATE);
                        break;
                case Opt_prefix:
+                       kfree(*prefix);
                        *prefix = match_strdup(&args[0]);
                        if (!*prefix)
                                return 0;
-- 
1.8.3.1