lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20220712204830.kvblayj37s3udt4b@guptapa-desk>
Date:   Tue, 12 Jul 2022 13:48:30 -0700
From:   Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>
To:     Vince Weaver <vincent.weaver@...ne.edu>
Cc:     "Liang, Kan" <kan.liang@...ux.intel.com>,
        linux-kernel@...r.kernel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>
Subject: Re: [perf] unchecked MSR access error: WRMSR to 0x689 in
 intel_pmu_lbr_restore

On Tue, Jul 12, 2022 at 03:39:56PM -0400, Vince Weaver wrote:
>On Mon, 11 Jul 2022, Pawan Gupta wrote:
>
>> Output of below would be helpful:
>>
>> # grep "rtm\|hle" /proc/cpuinfo
>
>no results
>
>> ARCH_CAP
>> # rdmsr 0x10a
>
>rdmsr: CPU 0 cannot read MSR 0x0000010a
>
>> TSX_CTRL
>> # rdmsr 0x122
>
>rdmsr: CPU 0 cannot read MSR 0x00000122
>
>> MCU_OPT_CTRL
>> # rdmsr 0x123
>
>0
>
>> TSX_FORCE_ABORT
>> # rdmsr 0x10f
>
>rdmsr: CPU 0 cannot read MSR 0x0000010f

It appears this CPU does not support TSX feature (or disabling TSX). If
the bug is easy to reproduce, bisecting can help.

Thanks,
Pawan

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ