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From b535cf94fca7b3cda4905c26f6b5921e15abbc9f Mon Sep 17 00:00:00 2001
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From: Jean Delvare <jdelvare@suse.de>
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Date: Mon, 26 Aug 2019 14:20:15 +0200
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Subject: [PATCH 05/11] dmidecode: Only scan /dev/mem for entry point on x86
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x86 is the only architecture which can have a DMI entry point scanned
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from /dev/mem. Do not attempt it on other architectures, because not
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only it can't work, but it can even cause the system to reboot.
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This fixes support request #109697:
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https://savannah.nongnu.org/support/?109697
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---
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dmidecode.c | 8 +++++---
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1 file changed, 5 insertions(+), 3 deletions(-)
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diff --git a/dmidecode.c b/dmidecode.c
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index 21bfd65274c4..9c1e9c4b0498 100644
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--- a/dmidecode.c
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+++ b/dmidecode.c
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@@ -2,7 +2,7 @@
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* DMI Decode
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*
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* Copyright (C) 2000-2002 Alan Cox <alan@redhat.com>
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- * Copyright (C) 2002-2018 Jean Delvare <jdelvare@suse.de>
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+ * Copyright (C) 2002-2019 Jean Delvare <jdelvare@suse.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@@ -5538,7 +5538,7 @@ int main(int argc, char * const argv[])
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off_t fp;
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size_t size;
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int efi;
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- u8 *buf;
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+ u8 *buf = NULL;
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/*
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* We don't want stdout and stderr to be mixed up if both are
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@@ -5642,7 +5642,7 @@ int main(int argc, char * const argv[])
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printf("Failed to get SMBIOS data from sysfs.\n");
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}
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- /* Next try EFI (ia64, Intel-based Mac) */
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+ /* Next try EFI (ia64, Intel-based Mac, arm64) */
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efi = address_from_efi(&fp);
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switch (efi)
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{
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@@ -5675,6 +5675,7 @@ int main(int argc, char * const argv[])
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goto done;
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memory_scan:
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+#if defined __i386__ || defined __x86_64__
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if (!(opt.flags & FLAG_QUIET))
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printf("Scanning %s for entry point.\n", opt.devmem);
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/* Fallback to memory scan (x86, x86_64) */
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@@ -5717,6 +5718,7 @@ int main(int argc, char * const argv[])
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}
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}
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}
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+#endif
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done:
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if (!found && !(opt.flags & FLAG_QUIET))
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--
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2.17.1
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