diff --git a/libxfs/xfs_rmap.c b/libxfs/xfs_rmap.c
index 4657d7d..2a05cdb 100644
--- a/libxfs/xfs_rmap.c
+++ b/libxfs/xfs_rmap.c
@@ -253,6 +253,11 @@
 	if (!is_inode && (is_bmbt || is_unwritten || is_attr))
 		return __this_address;
 
+	/* Check for a valid fork offset, if applicable. */
+	if (is_inode && !is_bmbt &&
+	    !xfs_verify_fileext(mp, irec->rm_offset, irec->rm_blockcount))
+		return __this_address;
+
 	return NULL;
 }