Re: [syzbot] [hfs?] memory leak in __hfs_bnode_create

[Edward Adam Davis]

#syz test

diff --git a/fs/hfsplus/bnode.c b/fs/hfsplus/bnode.c
index f8b5a8ae58ff..cde9f6fbedd7 100644
--- a/fs/hfsplus/bnode.c
+++ b/fs/hfsplus/bnode.c
@@ -604,6 +604,13 @@ struct hfs_bnode *hfs_bnode_find(struct hfs_btree *tree, u32 num)
 
 node_error:
 	set_bit(HFS_BNODE_ERROR, &node->flags);
+	if (test_bit(HFS_BNODE_NEW, &node->flags)) {
+		if (num == HFSPLUS_TREE_HEAD) {
+			hfs_bnode_unhash(node);
+			hfs_bnode_free(node);
+			return ERR_PTR(-EIO);
+		}
+	}
 	clear_bit(HFS_BNODE_NEW, &node->flags);
 	wake_up(&node->lock_wq);
 	hfs_bnode_put(node);