From e12ec26e19e02281d3e7258c3aabb88a5cf5ec1d Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Mon, 26 Aug 2019 14:20:15 +0200 Subject: [PATCH 05/11] dmidecode: Only scan /dev/mem for entry point on x86 x86 is the only architecture which can have a DMI entry point scanned from /dev/mem. Do not attempt it on other architectures, because not only it can't work, but it can even cause the system to reboot. This fixes support request #109697: https://savannah.nongnu.org/support/?109697 --- dmidecode.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/dmidecode.c b/dmidecode.c index 21bfd65274c4..9c1e9c4b0498 100644 --- a/dmidecode.c +++ b/dmidecode.c @@ -2,7 +2,7 @@ * DMI Decode * * Copyright (C) 2000-2002 Alan Cox - * Copyright (C) 2002-2018 Jean Delvare + * Copyright (C) 2002-2019 Jean Delvare * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -5538,7 +5538,7 @@ int main(int argc, char * const argv[]) off_t fp; size_t size; int efi; - u8 *buf; + u8 *buf = NULL; /* * We don't want stdout and stderr to be mixed up if both are @@ -5642,7 +5642,7 @@ int main(int argc, char * const argv[]) printf("Failed to get SMBIOS data from sysfs.\n"); } - /* Next try EFI (ia64, Intel-based Mac) */ + /* Next try EFI (ia64, Intel-based Mac, arm64) */ efi = address_from_efi(&fp); switch (efi) { @@ -5675,6 +5675,7 @@ int main(int argc, char * const argv[]) goto done; memory_scan: +#if defined __i386__ || defined __x86_64__ if (!(opt.flags & FLAG_QUIET)) printf("Scanning %s for entry point.\n", opt.devmem); /* Fallback to memory scan (x86, x86_64) */ @@ -5717,6 +5718,7 @@ int main(int argc, char * const argv[]) } } } +#endif done: if (!found && !(opt.flags & FLAG_QUIET)) -- 2.17.1