diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c
index 59b43a0..50830c7 100644
--- a/fs/proc/kcore.c
+++ b/fs/proc/kcore.c
@@ -408,6 +408,13 @@ static int __init proc_kcore_init(void)
 	if (proc_root_kcore)
 		proc_root_kcore->size =
 				(size_t)high_memory - PAGE_OFFSET + PAGE_SIZE;
+	printk(KERN_INFO "#######high memory %lu, size_t %llu\n",
+	       (unsigned long long)high_memory, (size_t)high_memory);
+	if (proc_root_kcore)
+		printk(KERN_INFO "#######kcore size %lu, "
+		       "PAGE_OFFSET %lu, PAGE_SIZE %lu\n",
+		       proc_root_kcore->size,
+		       PAGE_OFFSET, PAGE_SIZE);
 	return 0;
 }
 module_init(proc_kcore_init);