From eef0dd4fa4205a47ab3f8c4608936f7128f1c10c Mon Sep 17 00:00:00 2001
From: Marc Hartmayer <mhartmay@linux.ibm.com>
Date: Mon, 15 Nov 2021 10:58:44 +0100
Subject: [PATCH] zdump: df_elf: add missing endianness check
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

A s390x ELF file must use big-endian encoding.

Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
---
 zdump/df_elf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/zdump/df_elf.c b/zdump/df_elf.c
index 7d02a608..1b88a328 100644
--- a/zdump/df_elf.c
+++ b/zdump/df_elf.c
@@ -48,7 +48,7 @@ bool ehdr_is_vmcore(const Elf64_Ehdr *ehdr)
 
 bool ehdr_is_s390x(const Elf64_Ehdr *ehdr)
 {
-	return ehdr->e_machine == EM_S390 &&
+	return ehdr->e_machine == EM_S390 && ehdr->e_ident[EI_DATA] == ELFDATA2MSB &&
 	       ehdr->e_ident[EI_CLASS] == ELFCLASS64;
 }