[PATCH 3/3] ksmbd: fix n.data memory leak in ksmbd_vfs_set_dos_attrib_xattr

[liuqiangneo]

From: Qiang Liu <liuqiang@xxxxxxxxxx>

Free ndr buffer data when ndr_encode_dos_attr() returns error
to avoid memory leak.

Signed-off-by: Qiang Liu <liuqiang@xxxxxxxxxx>
---
 fs/smb/server/vfs.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/smb/server/vfs.c b/fs/smb/server/vfs.c
index 60b4210d5ab8..18d5412081de 100644
--- a/fs/smb/server/vfs.c
+++ b/fs/smb/server/vfs.c
@@ -1568,8 +1568,10 @@ int ksmbd_vfs_set_dos_attrib_xattr(struct mnt_idmap *idmap,
 	int err;
 
 	err = ndr_encode_dos_attr(&n, da);
-	if (err)
+	if (err) {
+		kfree(n.data);
 		return err;
+	}
 
 	err = ksmbd_vfs_setxattr(idmap, path, XATTR_NAME_DOS_ATTRIBUTE,
 				 (void *)n.data, n.offset, 0, get_write);
-- 
2.43.0