X-Git-Url: http://git.cascardo.eti.br/?a=blobdiff_plain;f=fs%2Fbtrfs%2Fdisk-io.c;h=474209f50844a546c2d9572a603f4dc3549e7692;hb=053ab70f0604224c7893b43f9d9d5efa283580d6;hp=edda47162752b249ccb051e94f5fb8d7bd246be9;hpb=35bbb97fc898aeb874cb7c8b746f091caa359994;p=cascardo%2Flinux.git

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index edda47162752..474209f50844 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -613,6 +613,19 @@ static noinline int check_leaf(struct btrfs_root *root,
 	return 0;
 }
 
+static int check_node(struct btrfs_root *root, struct extent_buffer *node)
+{
+	unsigned long nr = btrfs_header_nritems(node);
+
+	if (nr == 0 || nr > BTRFS_NODEPTRS_PER_BLOCK(root)) {
+		btrfs_crit(root->fs_info,
+			   "corrupt node: block %llu root %llu nritems %lu",
+			   node->start, root->objectid, nr);
+		return -EIO;
+	}
+	return 0;
+}
+
 static int btree_readpage_end_io_hook(struct btrfs_io_bio *io_bio,
 				      u64 phy_offset, struct page *page,
 				      u64 start, u64 end, int mirror)
@@ -683,6 +696,9 @@ static int btree_readpage_end_io_hook(struct btrfs_io_bio *io_bio,
 		ret = -EIO;
 	}
 
+	if (found_level > 0 && check_node(root, eb))
+		ret = -EIO;
+
 	if (!ret)
 		set_extent_buffer_uptodate(eb);
 err: