From 3a31a48e1bda8d8799695a878a872fd30d5c3e45 Mon Sep 17 00:00:00 2001
From: Luca Boccassi <bluca@debian.org>
Date: Fri, 12 May 2023 00:49:57 +0100
Subject: [PATCH] efi: support passing empty cmdline to mangle_stub_cmdline()

Just return instead of crashing

(cherry picked from commit e715d82de6694d82a17921b5ccbcf47398604068)

Related: RHEL-16952
---
 src/boot/efi/util.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/boot/efi/util.c b/src/boot/efi/util.c
index bd821a5afb..b8befb4b0c 100644
--- a/src/boot/efi/util.c
+++ b/src/boot/efi/util.c
@@ -272,6 +272,9 @@ char16_t *xstr8_to_path(const char *str8) {
 }
 
 void mangle_stub_cmdline(char16_t *cmdline) {
+        if (!cmdline)
+                return;
+
         for (; *cmdline != '\0'; cmdline++)
                 /* Convert ASCII control characters to spaces. */
                 if (*cmdline <= 0x1F)