diff --git a/executer/kernel/mcctrl/syscall.c b/executer/kernel/mcctrl/syscall.c
index fb0e0cc4..195f7f99 100644
--- a/executer/kernel/mcctrl/syscall.c
+++ b/executer/kernel/mcctrl/syscall.c
@@ -851,7 +851,8 @@ static int rus_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 		else
 		error = vm_insert_pfn(vma, rva+(pix*PAGE_SIZE), pfn+pix);
 		if (error) {
-#ifdef POSTK_DEBUG_TEMP_FIX_11 /* rus_vm_fault() multi-thread fix */
+#if 1 /* POSTK_DEBUG_TEMP_FIX_11 */ /* rus_vm_fault() multi-thread fix */
+			printk("%s: vm_insert_pfn returned %d\n", __FUNCTION__, error);
 			if (error == -EBUSY) {
 				error = 0;
 			} else {