commit 0d0b8646a66de7f3bf345106f2034a2268799d67
author Al Viro <viro@zeniv.linux.org.uk> Tue Oct 01 23:28:49 2024 -0400
committer Al Viro <viro@zeniv.linux.org.uk> Wed Oct 02 00:05:09 2024 -0400
tree eb15c29de3cab760b53f7885b19c461a7828fb0b
parent 9852d85ec9d492ebef56dc5f229416c925758edc

ufs_rename(): fix bogus argument of folio_release_kmap()

new_dir does *NOT* point into dir_folio - it's an inode, not a pointer
to ufs directory entry.

Fixes: 516b97cf03dd6 "ufs: Convert directory handling to kmap_local"
Acked-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/ufs/namei.c

diff --git a/fs/ufs/namei.c b/fs/ufs/namei.c
index 24bd121..c839097 100644
--- a/fs/ufs/namei.c
+++ b/fs/ufs/namei.c
@@ -307,7 +307,7 @@ static int ufs_rename(struct mnt_idmap *idmap, struct inode *old_dir,
 		if (old_dir != new_dir)
 			ufs_set_link(old_inode, dir_de, dir_folio, new_dir, 0);
 		else
-			folio_release_kmap(dir_folio, new_dir);
+			folio_release_kmap(dir_folio, dir_de);
 		inode_dec_link_count(old_dir);
 	}
 	return 0;