From 1b44a6aecc1193336f228204d2f3ae9f7737e78c Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Fri, 23 Mar 2018 10:06:55 -0700 Subject: [PATCH] xfs: record inode buf errors as a xref error in inobt scrubber During the inode btree scrubs we try to confirm the freemask bits against the inode records. If the inode buffer read fails, this is a cross-referencing error, not a corruption of the inode btree itself. Use the xref_process_error call here. Found via core.version middlebit fuzz in xfs/415. The userspace xfs_scrub program will try to repair outright corruptions in the agi/inobt prior to phase 3 so that the inode scan will proceed. If only a cross-referencing error is noted, the repair program defers the repair attempt until it can check the other space metadata at least once. It is therefore essential that the inobt scrubber can correctly distinguish between corruptions and "unable to cross-reference something else with this inobt". Signed-off-by: Darrick J. Wong Reviewed-by: Brian Foster --- fs/xfs/scrub/ialloc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/xfs/scrub/ialloc.c b/fs/xfs/scrub/ialloc.c index 63ab3f98430d..32e0d1ae0056 100644 --- a/fs/xfs/scrub/ialloc.c +++ b/fs/xfs/scrub/ialloc.c @@ -259,7 +259,8 @@ xfs_scrub_iallocbt_check_freemask( error = xfs_imap_to_bp(mp, bs->cur->bc_tp, &imap, &dip, &bp, 0, 0); - if (!xfs_scrub_btree_process_error(bs->sc, bs->cur, 0, &error)) + if (!xfs_scrub_btree_xref_process_error(bs->sc, bs->cur, 0, + &error)) continue; /* Which inodes are free? */ -- 2.45.2