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- dmidecode-07-only-decode-one-dmi-table.patch: Only decode one

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DMI table.
  https://savannah.nongnu.org/bugs/?50022

OBS-URL: https://build.opensuse.org/package/show/Base:System/dmidecode?expand=0&rev=36
This commit is contained in:
Jean Delvare 2017-01-20 12:21:06 +00:00 committed by Git OBS Bridge
parent 925fc78f0a
commit 9c372773ea
3 changed files with 78 additions and 1 deletions
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68
dmidecode-07-only-decode-one-dmi-table.patch Normal file
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@ -0,0 +1,68 @@
From: Jean Delvare <jdelvare@suse.de>
Date: Fri, 20 Jan 2017 10:57:12 +0100
Subject: Only decode one DMI table
Git-commit: 12fbde92a26da61eda9f2ff0ba3c316779163f10
References: https://savannah.nongnu.org/bugs/?50022
Since version 3.0.0 of the SMBIOS specification, there can be
multiple entry points in memory, pointing to one or two DMI tables.
If both a 32-bit ("_SM_") entry point and a 64-bit ("_SM3_") entry
point are present, the specification requires that the latter points
to a table which is a super-set of the table pointed to by the
former. Therefore it makes no sense to decode both.
Per specification, look for a 64-bit ("_SM3_") entry point first, and
if we can't find any, look for a 32-bit ("_SM_" or "_DMI_") entry
point.
This fixes bug #50022:
https://savannah.nongnu.org/bugs/?50022
---
dmidecode.c | 19 ++++++++++++++-----
1 file changed, 14 insertions(+), 5 deletions(-)
--- a/dmidecode.c
+++ b/dmidecode.c
@@ -4903,28 +4903,37 @@ memory_scan:
goto exit_free;
}
- for (fp = 0; fp <= 0xFFF0; fp += 16)
+ /* Look for a 64-bit entry point first */
+ for (fp = 0; fp <= 0xFFE0; fp += 16)
{
- if (memcmp(buf + fp, "_SM3_", 5) == 0 && fp <= 0xFFE0)
+ if (memcmp(buf + fp, "_SM3_", 5) == 0)
{
if (smbios3_decode(buf + fp, opt.devmem, 0))
{
found++;
- fp += 16;
+ goto done;
}
}
- else if (memcmp(buf + fp, "_SM_", 4) == 0 && fp <= 0xFFE0)
+ }
+
+ /* If none found, look for a 32-bit entry point */
+ for (fp = 0; fp <= 0xFFF0; fp += 16)
+ {
+ if (memcmp(buf + fp, "_SM_", 4) == 0 && fp <= 0xFFE0)
{
if (smbios_decode(buf + fp, opt.devmem, 0))
{
found++;
- fp += 16;
+ goto done;
}
}
else if (memcmp(buf + fp, "_DMI_", 5) == 0)
{
if (legacy_decode(buf + fp, opt.devmem, 0))
+ {
found++;
+ goto done;
+ }
}
}

7
dmidecode.changes
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@ -1,3 +1,10 @@
-------------------------------------------------------------------
Fri Jan 20 13:18:38 CET 2017 - jdelvare@suse.de
- dmidecode-07-only-decode-one-dmi-table.patch: Only decode one
DMI table.
https://savannah.nongnu.org/bugs/?50022
-------------------------------------------------------------------
Tue May 3 14:10:41 UTC 2016 - jdelvare@suse.de

4
dmidecode.spec
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@ -1,7 +1,7 @@
#
# spec file for package dmidecode
#
# Copyright (c) 2016 SUSE LINUX GmbH, Nuernberg, Germany.
# Copyright (c) 2017 SUSE LINUX Products GmbH, Nuernberg, Germany.
#
# All modifications and additions to the file contributed by third parties
# remain the property of their copyright owners, unless otherwise agreed
@ -34,6 +34,7 @@ Patch3: dmidecode-03-let-read_file-return-the-actual-data-size.patch
Patch4: dmidecode-04-use-read_file-to-read-the-dmi-table-from-sysfs.patch
Patch5: dmidecode-05-use-dword-for-structure-table-maximum-size-in-smbios3.patch
Patch6: dmidecode-06-hide-irrelevant-fixup-message.patch
Patch7: dmidecode-07-only-decode-one-dmi-table.patch
Provides: pmtools:%{_sbindir}/dmidecode
Obsoletes: pmtools < 20071117
BuildRoot: %{_tmppath}/%{name}-%{version}-build
@ -62,6 +63,7 @@ the BIOS told it to.
%patch4 -p1
%patch5 -p1
%patch6 -p1
%patch7 -p1
%build
make CFLAGS="%{optflags}" %{?_smp_mflags}