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@xxxxxxxxxx>
---
fs/btrfs/print-tree.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/fs/btrfs/print-tree.c b/fs/btrfs/print-tree.c
index 147dc6c..aaeee45 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();
--
2.5.5
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