When scanning extents, we didn't set num_bytes when visiting a tree
block extent. On the corrupted filesystem I was trying to fix, this
caused an extent to have its size guessed as zero, so we'd compute end
as start-1, which caused us to hit insert_state's BUG_ON(end<start).
Signed-off-by: Alexandre Oliva <oliva@xxxxxxx>
---
cmds-check.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/cmds-check.c b/cmds-check.c
index 0165fba..e563354 100644
--- a/cmds-check.c
+++ b/cmds-check.c
@@ -5208,9 +5208,10 @@ static int process_extent_item(struct btrfs_root *root,
ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
refs = btrfs_extent_refs(eb, ei);
- if (btrfs_extent_flags(eb, ei) & BTRFS_EXTENT_FLAG_TREE_BLOCK)
+ if (btrfs_extent_flags(eb, ei) & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
metadata = 1;
- else
+ num_bytes = root->leafsize;
+ } else
metadata = 0;
add_extent_rec(extent_cache, NULL, 0, key.objectid, num_bytes,
--
Alexandre Oliva, freedom fighter http://FSFLA.org/~lxoliva/
You must be the change you wish to see in the world. -- Gandhi
Be Free! -- http://FSFLA.org/ FSF Latin America board member
Free Software Evangelist|Red Hat Brasil GNU Toolchain Engineer
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
