VFS: AF_UNIX sockets should call mknod on the top layer only

AF_UNIX sockets should call mknod on the top layer only and should not attempt to modify the lower layer in a layered filesystem such as overlayfs. Signed-off-by: David Howells <[email protected]> Signed-off-by: Al Viro <[email protected]>
wentasah · Apr 15, 2015 · ee8ac4d · ee8ac4d
1 parent aa4d861
commit ee8ac4d
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
@@ -839,7 +839,7 @@ static int unix_mknod(const char *sun_path, umode_t mode, struct path *res)
 	 */
 	err = security_path_mknod(&path, dentry, mode, 0);
 	if (!err) {
-		err = vfs_mknod(path.dentry->d_inode, dentry, mode, 0);
+		err = vfs_mknod(d_inode(path.dentry), dentry, mode, 0);
 		if (!err) {
 			res->mnt = mntget(path.mnt);
 			res->dentry = dget(dentry);