read_tree_block() has the possibility of returning NULL. So, the code in which it is checked whether the return value is NULL is added.
Signed-off-by: Tsutomu Itoh <[email protected]> --- fs/btrfs/print-tree.c | 1 + fs/btrfs/relocation.c | 2 +- 2 files changed, 2 insertions(+), 1 deletions(-) diff --git a/fs/btrfs/print-tree.c b/fs/btrfs/print-tree.c index f38e452..9ea50b9 100644 --- a/fs/btrfs/print-tree.c +++ b/fs/btrfs/print-tree.c @@ -330,6 +330,7 @@ void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *c) btrfs_node_blockptr(c, i), btrfs_level_size(root, level - 1), btrfs_node_ptr_generation(c, i)); + BUG_ON(!next); if (btrfs_is_leaf(next) && level != 1) BUG(); diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 8c1aae2..88221a8 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -1884,7 +1884,7 @@ int walk_down_reloc_tree(struct btrfs_root *root, struct btrfs_path *path, bytenr = btrfs_node_blockptr(eb, path->slots[i]); blocksize = btrfs_level_size(root, i - 1); eb = read_tree_block(root, bytenr, blocksize, ptr_gen); - BUG_ON(btrfs_header_level(eb) != i - 1); + BUG_ON(!eb || btrfs_header_level(eb) != i - 1); path->nodes[i - 1] = eb; path->slots[i - 1] = 0; } -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
