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authorDarrick J. Wong <darrick.wong@oracle.com>2018-06-03 16:10:12 -0700
committerDarrick J. Wong <darrick.wong@oracle.com>2018-06-04 18:25:05 -0700
commit85ae01098c1a6a8e3ce908f8808f2d8f8effdbe3 (patch)
tree9a5fdf57b2af55ce2025110963db9432ac4f11c7 /fs/xfs/libxfs/xfs_btree.c
parente63a1008ee08334ea6a9c9edb59b1d2763f5b231 (diff)
downloadlinux-85ae01098c1a6a8e3ce908f8808f2d8f8effdbe3.tar.gz
xfs: don't assert when on-disk btree pointers are garbage
Don't ASSERT when we encounter bad on-disk btree pointers in the debug
check functions.  Log the error to leave breadcrumbs and let the upper
layers deal with it.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Diffstat (limited to 'fs/xfs/libxfs/xfs_btree.c')
-rw-r--r--fs/xfs/libxfs/xfs_btree.c23
1 files changed, 16 insertions, 7 deletions
diff --git a/fs/xfs/libxfs/xfs_btree.c b/fs/xfs/libxfs/xfs_btree.c
index 3fcddfeaa662..4f83d7949a21 100644
--- a/fs/xfs/libxfs/xfs_btree.c
+++ b/fs/xfs/libxfs/xfs_btree.c
@@ -246,16 +246,25 @@ xfs_btree_check_ptr(
 	int			level)
 {
 	if (cur->bc_flags & XFS_BTREE_LONG_PTRS) {
-		XFS_WANT_CORRUPTED_RETURN(cur->bc_mp,
-				xfs_btree_check_lptr(cur,
-					be64_to_cpu((&ptr->l)[index]), level));
+		if (xfs_btree_check_lptr(cur, be64_to_cpu((&ptr->l)[index]),
+				level))
+			return 0;
+		xfs_err(cur->bc_mp,
+"Inode %llu fork %d: Corrupt btree %d pointer at level %d index %d.",
+				cur->bc_private.b.ip->i_ino,
+				cur->bc_private.b.whichfork, cur->bc_btnum,
+				level, index);
 	} else {
-		XFS_WANT_CORRUPTED_RETURN(cur->bc_mp,
-				xfs_btree_check_sptr(cur,
-					be32_to_cpu((&ptr->s)[index]), level));
+		if (xfs_btree_check_sptr(cur, be32_to_cpu((&ptr->s)[index]),
+				level))
+			return 0;
+		xfs_err(cur->bc_mp,
+"AG %u: Corrupt btree %d pointer at level %d index %d.",
+				cur->bc_private.a.agno, cur->bc_btnum,
+				level, index);
 	}
 
-	return 0;
+	return -EFSCORRUPTED;
 }
 
 #ifdef DEBUG