1 files changed, 35 insertions, 18 deletions

diff --git a/fs/xfs/libxfs/xfs_ialloc.c b/fs/xfs/libxfs/xfs_ialloc.c
index 7ee292aecbeb..32af8326ad76 100644
--- a/fs/xfs/libxfs/xfs_ialloc.c
+++ b/fs/xfs/libxfs/xfs_ialloc.c
@@ -95,6 +95,33 @@ xfs_inobt_btrec_to_irec(
 	irec->ir_free = be64_to_cpu(rec->inobt.ir_free);
 }
 
+/* Simple checks for inode records. */
+xfs_failaddr_t
+xfs_inobt_check_irec(
+	struct xfs_btree_cur			*cur,
+	const struct xfs_inobt_rec_incore	*irec)
+{
+	uint64_t			realfree;
+
+	if (!xfs_verify_agino(cur->bc_ag.pag, irec->ir_startino))
+		return __this_address;
+	if (irec->ir_count < XFS_INODES_PER_HOLEMASK_BIT ||
+	    irec->ir_count > XFS_INODES_PER_CHUNK)
+		return __this_address;
+	if (irec->ir_freecount > XFS_INODES_PER_CHUNK)
+		return __this_address;
+
+	/* if there are no holes, return the first available offset */
+	if (!xfs_inobt_issparse(irec->ir_holemask))
+		realfree = irec->ir_free;
+	else
+		realfree = irec->ir_free & xfs_inobt_irec_to_allocmask(irec);
+	if (hweight64(realfree) != irec->ir_freecount)
+		return __this_address;
+
+	return NULL;
+}
+
 /*
  * Get the data from the pointed-to record.
  */
@@ -106,38 +133,25 @@ xfs_inobt_get_rec(
 {
 	struct xfs_mount		*mp = cur->bc_mp;
 	union xfs_btree_rec		*rec;
+	xfs_failaddr_t			fa;
 	int				error;
-	uint64_t			realfree;
 
 	error = xfs_btree_get_rec(cur, &rec, stat);
 	if (error || *stat == 0)
 		return error;
 
 	xfs_inobt_btrec_to_irec(mp, rec, irec);
-
-	if (!xfs_verify_agino(cur->bc_ag.pag, irec->ir_startino))
-		goto out_bad_rec;
-	if (irec->ir_count < XFS_INODES_PER_HOLEMASK_BIT ||
-	    irec->ir_count > XFS_INODES_PER_CHUNK)
-		goto out_bad_rec;
-	if (irec->ir_freecount > XFS_INODES_PER_CHUNK)
-		goto out_bad_rec;
-
-	/* if there are no holes, return the first available offset */
-	if (!xfs_inobt_issparse(irec->ir_holemask))
-		realfree = irec->ir_free;
-	else
-		realfree = irec->ir_free & xfs_inobt_irec_to_allocmask(irec);
-	if (hweight64(realfree) != irec->ir_freecount)
+	fa = xfs_inobt_check_irec(cur, irec);
+	if (fa)
 		goto out_bad_rec;
 
 	return 0;
 
 out_bad_rec:
 	xfs_warn(mp,
-		"%s Inode BTree record corruption in AG %d detected!",
+		"%s Inode BTree record corruption in AG %d detected at %pS!",
 		cur->bc_btnum == XFS_BTNUM_INO ? "Used" : "Free",
-		cur->bc_ag.pag->pag_agno);
+		cur->bc_ag.pag->pag_agno, fa);
 	xfs_warn(mp,
 "start inode 0x%x, count 0x%x, free 0x%x freemask 0x%llx, holemask 0x%x",
 		irec->ir_startino, irec->ir_count, irec->ir_freecount,
@@ -2690,6 +2704,9 @@ xfs_ialloc_count_inodes_rec(
 	struct xfs_ialloc_count_inodes	*ci = priv;
 
 	xfs_inobt_btrec_to_irec(cur->bc_mp, rec, &irec);
+	if (xfs_inobt_check_irec(cur, &irec) != NULL)
+		return -EFSCORRUPTED;
+
 	ci->count += irec.ir_count;
 	ci->freecount += irec.ir_freecount;