From bcf1bd3bdee9787ace5e8b96c80a093f13fa64c7 Mon Sep 17 00:00:00 2001
From: Josh Holtrop <jholtrop@gmail.com>
Date: Sat, 21 Oct 2023 20:46:27 -0400
Subject: [PATCH] HELLO: Zero HULK BSS region after mapping it

---
 src/hello/hello.d | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/hello/hello.d b/src/hello/hello.d
index 64f958a..b67cb82 100644
--- a/src/hello/hello.d
+++ b/src/hello/hello.d
@@ -419,6 +419,8 @@ private bool map_hulk(PageTable * pt_base)
     {
         return false;
     }
+    /* Zero BSS region. */
+    memset64(cast(void *)bootinfo().bss_phys, 0u, hulk_bss_size() / 8);
     /* Map HULK stack. */
     virt = hulk_virt_stack_top() - hulk_stack_size();
     if (!map4kregion(virt, bootinfo().stack_phys, hulk_stack_size(), pt_base))