5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Namjae Jeon <linkinjeon@xxxxxxxxxx>
[ Upstream commit 48b47f0caaa8a9f05ed803cb4f335fa3a7bfc622 ]
Uninitialized rd.delegated_inode can be used in vfs_rename().
Fix this by setting rd.delegated_inode to NULL to avoid the uninitialized
read.
Fixes: 74d7970febf7 ("ksmbd: fix racy issue from using ->d_parent and ->d_name")
Reported-by: Coverity Scan <scan-admin@xxxxxxxxxxxx>
Signed-off-by: Namjae Jeon <linkinjeon@xxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/ksmbd/vfs.c | 1 +
1 file changed, 1 insertion(+)
--- a/fs/ksmbd/vfs.c
+++ b/fs/ksmbd/vfs.c
@@ -743,6 +743,7 @@ retry:
rd.new_dir = new_path.dentry->d_inode,
rd.new_dentry = new_dentry,
rd.flags = flags,
+ rd.delegated_inode = NULL,
err = vfs_rename(&rd);
if (err)
ksmbd_debug(VFS, "vfs_rename failed err %d\n", err);
