---

yaml --- r: 211586 b: refs/heads/master c: ee52716 h: refs/heads/master v: v3
git-mirror · Oct 14, 2010 · 2221057 · 2221057
1 parent a401da9
commit 2221057
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Showing 2 changed files with 10 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 40de9a7cebc4e0b23cd6863c84c2279f0ccadebb
+refs/heads/master: ee52716245877b821f5ddbb3ace85b73084fb450
diff --git a/trunk/fs/hfsplus/btree.c b/trunk/fs/hfsplus/btree.c
@@ -39,10 +39,16 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id)
 		goto free_tree;
 	tree->inode = inode;
 
+	if (!HFSPLUS_I(tree->inode)->first_blocks) {
+		printk(KERN_ERR
+		       "hfs: invalid btree extent records (0 size).\n");
+		goto free_inode;
+	}
+
 	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));
@@ -89,8 +95,9 @@ struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id)
  fail_page:
 	tree->inode->i_mapping->a_ops = &hfsplus_aops;
 	page_cache_release(page);
- free_tree:
+ free_inode:
 	iput(tree->inode);
+ free_tree:
 	kfree(tree);
 	return NULL;
 }