From: Darrick J. Wong <djwong@xxxxxxxxxx>
If we can't read the AGF header, we never actually set a value for
freelen and usedlen. These two variables are used to make the worst
case estimate of btree size, so it's safe to set them to the AG size as
a fallback.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
fs/xfs/scrub/repair.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/fs/xfs/scrub/repair.c b/fs/xfs/scrub/repair.c
index 25e86c71e7b9..61bc43418a2a 100644
--- a/fs/xfs/scrub/repair.c
+++ b/fs/xfs/scrub/repair.c
@@ -207,7 +207,11 @@ xrep_calc_ag_resblks(
/* Now grab the block counters from the AGF. */
error = xfs_alloc_read_agf(mp, NULL, sm->sm_agno, 0, &bp);
- if (!error) {
+ if (error) {
+ aglen = xfs_ag_block_count(mp, sm->sm_agno);
+ freelen = aglen;
+ usedlen = aglen;
+ } else {
struct xfs_agf *agf = bp->b_addr;
aglen = be32_to_cpu(agf->agf_length);
