1 files changed, 2 insertions, 0 deletions
diff --git a/kalloc.c b/kalloc.c
index c943e5e..cfbbae4 100644
--- a/kalloc.c
+++ b/kalloc.c
@@ -27,6 +27,8 @@ void
 kinit()
 {
   initlock(&kmem.lock, "kmem");
+  if(PHYSTOP > RAMDISK)
+    panic("kinit");
   freerange(end, (void*)PHYSTOP);
 }