hfs: fix coverity-found null deref (46a39c1c) · Commits · 戴 / test

Fix potential null deref introduced by commit http://bugzilla.kernel.org/show_bug.cgi?id=9748 Signed-off-by:

Eric Sandeen <sandeen@redhat.com> Cc: Roman Zippel <zippel@linux-m68k.org> Reported-by:

fs/hfs/btree.c

+4 −3

Original line number	Diff line number	Diff line
		@@ -61,7 +61,7 @@ struct hfs_btree hfs_btree_open(struct super_block sb, u32 id, btree_keycmp ke
		mapping = tree->inode->i_mapping;
		page = read_mapping_page(mapping, 0, NULL);
		if (IS_ERR(page))
		goto free_tree;
		goto free_inode;

		/* Load the header */
		head = (struct hfs_btree_header_rec *)(kmap(page) + sizeof(struct hfs_bnode_desc));
		@@ -101,9 +101,10 @@ struct hfs_btree hfs_btree_open(struct super_block sb, u32 id, btree_keycmp ke

		fail_page:
		page_cache_release(page);
		free_tree:
		free_inode:
		tree->inode->i_mapping->a_ops = &hfs_aops;
		iput(tree->inode);
		free_tree:
		kfree(tree);
		return NULL;
		}