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| author | Liu Bo <bo.li.liu@oracle.com> | 2016-09-14 17:23:39 -0700 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2016-09-26 18:04:01 +0200 |
| commit | a42cbec9c662ced87f1d0f22a1c114de4cf6e352 (patch) | |
| tree | dff3e55af355e9ce4e28e7a28ec3ad5f1e6dd2e5 /fs/btrfs/print-tree.c | |
| parent | a43f7f82064220082eba7075c5a844d773fdef1b (diff) | |
| download | linux-stable-a42cbec9c662ced87f1d0f22a1c114de4cf6e352.tar.gz linux-stable-a42cbec9c662ced87f1d0f22a1c114de4cf6e352.tar.bz2 linux-stable-a42cbec9c662ced87f1d0f22a1c114de4cf6e352.zip | |
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: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/print-tree.c')
| -rw-r--r-- | fs/btrfs/print-tree.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/btrfs/print-tree.c b/fs/btrfs/print-tree.c index 147dc6ca5de1..aaeee45d917d 100644 --- a/fs/btrfs/print-tree.c +++ b/fs/btrfs/print-tree.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, btrfs_node_blockptr(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) && level != 1) BUG(); |