When btrfs check detects a freespace tree extent which ends beyond the
blockgroup containing it a misleading error messages is printed. For
example if we have the following extent in the freespace tree:
item 5 key (30408704 FREE_SPACE_INFO 1073741824) itemoff 16259 itemsize 8
free space info extent count 3 flags 0
item 6 key (30425088 FREE_SPACE_EXTENT 49152) itemoff 16259 itemsize 0
free space extent
item 7 key (30507008 FREE_SPACE_EXTENT 65536) itemoff 16259 itemsize 0
free space extent
item 8 key (30654464 FREE_SPACE_EXTENT 14524648038063310901) itemoff 16259 itemsize 0
Clearly the last extent is corrupted so we should print something
along the lines of:
free space extent ends at 14524648038063310901, beyond end of block group 30408704-1104150528
Instead currently this is printed:
free space extent ends at 30654464, beyond end of block group 30408704-1104150528
So instead of printing the actual erroneous end, we print the beginning
of the extent. Fix this by printing the actual corrupted end.
Signed-off-by: Nikolay Borisov <nborisov@xxxxxxxx>
---
free-space-tree.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/free-space-tree.c b/free-space-tree.c
index 69a4eca8a74f..747f8778e610 100644
--- a/free-space-tree.c
+++ b/free-space-tree.c
@@ -276,7 +276,7 @@ static int load_free_space_extents(struct btrfs_fs_info *fs_info,
if (key.objectid + key.offset > end) {
fprintf(stderr,
"free space extent ends at %llu, beyond end of block group %llu-%llu\n",
- key.objectid, start, end);
+ key.objectid+key.offset, start, end);
(*errors)++;
break;
}
--
2.7.4
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