--- a/mm/truncate.c	2016-07-25 02:14:17.124949750 +0200
+++ b/mm/truncate.c	2016-10-24 13:07:15.193441985 +0200
@@ -605,6 +605,7 @@
 					/*
 					 * Zap the rest of the file in one hit.
 					 */
+printk(KERN_ERR "PAX: end: %lx index: %lx\n", end, index);
 					unmap_mapping_range(mapping,
 					   (loff_t)index << PAGE_SHIFT,
 					   (loff_t)(1 + end - index)