Commit a42cbec9 authored by Liu Bo's avatar Liu Bo Committed by David Sterba

Btrfs: add error handling for extent buffer in print tree

Somehow we missed btrfs_print_tree when last time we
updated error handling for read_extent_block().

This keeps us from getting a NULL pointer panic when
btrfs_print_tree's read_extent_block() fails.
Signed-off-by: default avatarLiu Bo <bo.li.liu@oracle.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent a43f7f82
...@@ -356,6 +356,13 @@ void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *c) ...@@ -356,6 +356,13 @@ void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *c)
struct extent_buffer *next = read_tree_block(root, struct extent_buffer *next = read_tree_block(root,
btrfs_node_blockptr(c, i), btrfs_node_blockptr(c, i),
btrfs_node_ptr_generation(c, i)); btrfs_node_ptr_generation(c, i));
if (IS_ERR(next)) {
continue;
} else if (!extent_buffer_uptodate(next)) {
free_extent_buffer(next);
continue;
}
if (btrfs_is_leaf(next) && if (btrfs_is_leaf(next) &&
level != 1) level != 1)
BUG(); BUG();
......
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