grub2/0223-Don-t-assume-that-boot-commands-will-only-return-on-.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Javier Martinez Canillas <javierm@redhat.com>
Date: Tue, 9 Apr 2019 13:12:40 +0200
Subject: [PATCH] Don't assume that boot commands will only return on fail

While it's true that for most loaders the boot command never returns, it
may be the case that it does. For example the GRUB emulator boot command
calls to systemctl kexec which in turn does an asynchonous call to kexec.

So in this case GRUB will wrongly assume that the boot command fails and
print a "Failed to boot both default and fallback entries" even when the
kexec call later succeeds.

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
---
 grub-core/normal/menu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/grub-core/normal/menu.c b/grub-core/normal/menu.c
index 9ea1f411814..14ceb9bb060 100644
--- a/grub-core/normal/menu.c
+++ b/grub-core/normal/menu.c
@@ -302,7 +302,7 @@ grub_menu_execute_entry(grub_menu_entry_t entry, int auto_boot)
     {
       grub_print_error ();
       grub_errno = GRUB_ERR_NONE;
-      return;
+      return grub_errno;
     }
 
   errs_before = grub_err_printed_errors;
@@ -315,7 +315,7 @@ grub_menu_execute_entry(grub_menu_entry_t entry, int auto_boot)
       grub_env_context_open ();
       menu = grub_zalloc (sizeof (*menu));
       if (! menu)
-	return;
+	return grub_errno;
       grub_env_set_menu (menu);
       if (auto_boot)
 	grub_env_set ("timeout", "0");