While performing normal mode check if the code comes across an invalid extent format it will just BUG() and exit without printing any useful information for debugging. Improve the situation by outputting the key/leaf bytenr/slot which will enable to quickly inspect the tree and see what the corruption is.
Signed-off-by: Nikolay Borisov <[email protected]> --- cmds-check.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/cmds-check.c b/cmds-check.c index a93ac2c88a38..371516709ed8 100644 --- a/cmds-check.c +++ b/cmds-check.c @@ -8362,7 +8362,12 @@ static int process_extent_item(struct btrfs_root *root, if (item_size < sizeof(*ei)) { #ifdef BTRFS_COMPAT_EXTENT_TREE_V0 struct btrfs_extent_item_v0 *ei0; - BUG_ON(item_size != sizeof(*ei0)); + if (item_size != sizeof(*ei0)) { + error("invalid extent item format: ITEM[%llu %u %llu] leaf: %llu slot: %d", + key.objectid, key.type, key.offset, + btrfs_header_bytenr(eb), slot); + BUG(); + } ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0); refs = btrfs_extent_refs_v0(eb, ei0); #else -- 2.7.4 -- 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
