File 0003-modules-Don-t-allocate-space-for-non-allocable-secti.patch of Package grub2

From 8cbecdb50b7c80e54a678ad81ed4b3ecfed5ed55 Mon Sep 17 00:00:00 2001
From: Peter Jones <pjones@redhat.com>
Date: Wed, 9 Oct 2024 09:16:38 +0100
Subject: [PATCH 03/13] modules: Don't allocate space for non-allocable
 sections

Currently when loading GRUB modules we allocate space for all sections
including those without SHF_ALLOC set. We then copy the sections that
/do/ have SHF_ALLOC set into the allocated memory leaving some of our
allocation untouched forever. Additionally, on platforms with GOT fixups
and trampolines we currently compute alignment round-ups for the
sections and sections with sh_size = 0. This patch removes the extra
space from the allocation computation and makes the allocation
computation loop skip empty sections as the loading loop does.

Signed-off-by: Peter Jones <pjones@redhat.com>
Signed-off-by: Jan Setje-Eilers <jan.setjeeilers@oracle.com>
Signed-off-by: Mate Kukri <mate.kukri@canonical.com>
Reviewed-By: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
---
 grub-core/kern/dl.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/grub-core/kern/dl.c b/grub-core/kern/dl.c
index 73a5b9e0f2..6af0310729 100644
--- a/grub-core/kern/dl.c
+++ b/grub-core/kern/dl.c
@@ -241,6 +241,9 @@ grub_dl_load_segments (grub_dl_t mod, const Elf_Ehdr *e)
        i < e->e_shnum;
        i++, s = (const Elf_Shdr *)((const char *) s + e->e_shentsize))
     {
+      if (s->sh_size == 0 || !(s->sh_flags & SHF_ALLOC))
+	continue;
+
       tsize = ALIGN_UP (tsize, s->sh_addralign) + s->sh_size;
       if (talign < s->sh_addralign)
 	talign = s->sh_addralign;
-- 
2.49.0