[PATCH 1/3] hfs: Unmap the page in the "fail_page" label

From: Fabio M. De Francesco
Date: Tue Aug 09 2022 - 11:20:32 EST


Several paths within hfs_btree_open() jump to the "fail_page" label
where put_page() is called while the page is still mapped.

Call kunmap() to unmap the page soon before put_page().

Reviewed-by: Ira Weiny <ira.weiny@xxxxxxxxx>
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@xxxxxxxxx>
---
fs/hfs/btree.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/fs/hfs/btree.c b/fs/hfs/btree.c
index 19017d296173..56c6782436e9 100644
--- a/fs/hfs/btree.c
+++ b/fs/hfs/btree.c
@@ -124,6 +124,7 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id, btree_keycmp ke
return tree;

fail_page:
+ kunmap(page);
put_page(page);
free_inode:
tree->inode->i_mapping->a_ops = &hfs_aops;
--
2.37.1