Assert that vma bounds are sane

e6adf0e7 · Austin Clements · 49def062 · e6adf0e7
--- a/kernel/vm.cc
+++ b/kernel/vm.cc
@@ -172,6 +172,8 @@ vma::vma(vmap *vmap, uptr start, uptr end, enum vmatype vtype, vmnode *vmn) :
 #endif
    vma_start(start), vma_end(end), va_type(vtype), n(vmn)
 {
+  assert(PGOFFSET(start) == 0);
+  assert(PGOFFSET(end) == 0);
  if (n)
    n->incref();
 }