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[dmidecode] [PATCH] dmidecode: Only scan /dev/mem for entry point on x86
From: |
Jean Delvare |
Subject: |
[dmidecode] [PATCH] dmidecode: Only scan /dev/mem for entry point on x86 |
Date: |
Wed, 26 Jun 2019 12:55:59 +0200 |
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 should fix support request #109697:
https://savannah.nongnu.org/support/?109697
---
dmidecode.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
--- dmidecode.orig/dmidecode.c 2019-04-19 10:01:22.394992483 +0200
+++ dmidecode/dmidecode.c 2019-06-26 11:20:28.965060297 +0200
@@ -2,7 +2,7 @@
* DMI Decode
*
* Copyright (C) 2000-2002 Alan Cox <address@hidden>
- * Copyright (C) 2002-2018 Jean Delvare <address@hidden>
+ * Copyright (C) 2002-2019 Jean Delvare <address@hidden>
*
* 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))
--
Jean Delvare
SUSE L3 Support
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