f2fs: check the acl's validity before setting

Before setting the acl, call posix_acl_valid() to check if it is
valid or not.

Signed-off-by: zhangzhen <zhenzhang.zhang@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/fs/f2fs/acl.c b/fs/f2fs/acl.c
index a28571528f24..e93e4ec7d165 100644
--- a/fs/f2fs/acl.c
+++ b/fs/f2fs/acl.c
@@ -203,6 +203,12 @@ static int __f2fs_set_acl(struct inode *inode, int type,
         size_t size = 0;
         int error;
 
+        if (acl) {
+                error = posix_acl_valid(acl);
+                if (error < 0)
+                        return error;
+        }
+
         switch (type) {
         case ACL_TYPE_ACCESS:
                 name_index = F2FS_XATTR_INDEX_POSIX_ACL_ACCESS;