Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Subject: Re: unknown NMI on AMD Rome
To:     Peter Zijlstra <peterz@infradead.org>, Jiri Olsa <jolsa@redhat.com>
Cc:     Borislav Petkov <bp@alien8.de>,
        Tom Lendacky <thomas.lendacky@amd.com>, x86@kernel.org,
        lkml <linux-kernel@vger.kernel.org>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Stanislav Kozina <skozina@redhat.com>,
        Michael Petlan <mpetlan@redhat.com>,
        Pierre Amadio <pamadio@redhat.com>, onatalen@redhat.com,
        darcari@redhat.com
References: <YFDSSxftYw9tCGC6@krava>
 <YFEMpo6GxxJS9Wvl@hirez.programming.kicks-ass.net>
From:   Kim Phillips <kim.phillips@amd.com>
Message-ID: <36397980-f897-147f-df55-f37805d869c9@amd.com>
Date:   Tue, 16 Mar 2021 15:02:38 -0500
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101
 Thunderbird/78.7.1
In-Reply-To: <YFEMpo6GxxJS9Wvl@hirez.programming.kicks-ass.net>
Content-Type: text/plain; charset=windows-1252
Content-Language: en-US
Content-Transfer-Encoding: 7bit
MIME-Version: 1.0
X-MS-Exchange-MessageSentRepresentingType: 1
Received: from [IPv6:2603:8080:1540:87c:9f48:efb1:7c44:6c23] (2603:8080:1540:87c:9f48:efb1:7c44:6c23) by SA9PR11CA0013.namprd11.prod.outlook.com (2603:10b6:806:6e::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3955.18 via Frontend Transport; Tue, 16 Mar 2021 20:02:40 +0000
X-MS-PublicTrafficType: Email
X-MS-Office365-Filtering-HT: Tenant
X-MS-Office365-Filtering-Correlation-Id: 601d08bd-4097-44a0-83b9-08d8e8b674ab
X-MS-TrafficTypeDiagnostic: BN6PR12MB1585:
X-MS-Exchange-Transport-Forked: True
X-Microsoft-Antispam-PRVS: <BN6PR12MB1585828A3DF823E3A0750A65876B9@BN6PR12MB1585.namprd12.prod.outlook.com>
X-MS-Oob-TLC-OOBClassifiers: OLM:7219;
X-MS-Exchange-SenderADCheck: 1
X-Microsoft-Antispam: BCL:0;
X-Microsoft-Antispam-Message-Info: 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
X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:BN8PR12MB3505.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(4636009)(376002)(396003)(346002)(39850400004)(366004)(136003)(31686004)(316002)(66946007)(5660300002)(66476007)(52116002)(66556008)(16526019)(8676002)(2616005)(110136005)(54906003)(44832011)(8936002)(966005)(4326008)(2906002)(53546011)(36756003)(86362001)(31696002)(6486002)(83380400001)(7416002)(478600001)(186003)(45980500001)(43620500001)(43740500002);DIR:OUT;SFP:1101;
X-MS-Exchange-AntiSpam-MessageData: =?Windows-1252?Q?jxaFS61nma/3op8Y+Dlt5oK11nwTCgY71+6jSJ7YOPoCNrwhkO+meDUD?=
 =?Windows-1252?Q?x1OAcmMfKxHGlHjTPJMDrtEsrPdulHFwKTfh1CXRChow/TZW48nCTBJR?=
 =?Windows-1252?Q?yhWWq7+QzSRHsf8QZMLMO4vn+M/7f9+1hnlT89hjqaKGe29TlteVpScL?=
 =?Windows-1252?Q?WAzwEISi2d9/Z5FboF7bs4Ru5BS7fAB/zc5po7lUwNtRi8EBQ0BrwqHY?=
 =?Windows-1252?Q?JFH8ls5Mm4ObBWvYLxblTG5UTohGndvZV6CzCmblARW8sHi4Au1GvDqq?=
 =?Windows-1252?Q?EiDoLMMfUyxulJPYEncnBPkhO0/lgn6yv69Qx3CmdfJN3e/EZqGy0LT9?=
 =?Windows-1252?Q?9P8Y47PD+OLhC+nPCX38vwskiuSazlqaljAyQEymfhdXc8GgKdCU2dRa?=
 =?Windows-1252?Q?H5hxrFWh+4YcmX1mLv0IOG1nXBbXB0js6j0lKj0SfPxgOQZ460yB8Ter?=
 =?Windows-1252?Q?JzEKDiGwjlG0SMEqo5lSN7XD6Ci8M5nfbYMX6cSF0yMwYXRSAC6dzrg3?=
 =?Windows-1252?Q?wJzqffbVhjQAkLUj+L4PM4C02w7mywa9blt4fbYhF3VM7gMcwcvDr6Df?=
 =?Windows-1252?Q?2n6VosjGDomHf+p7v/Gie90oyyvu45xlFfuYiaKkYdyVG7yYdsDMXTmq?=
 =?Windows-1252?Q?nOpfBGI4OIK3BC8uTd5va3HN1GDVjjZEyBPmHm7m4ixhFde/MC1qOacZ?=
 =?Windows-1252?Q?ESenWDGAwCm5QzWg1J+u2A9/2nw6QsVWCDqveI29j1zqV+S1ETUrbhCA?=
 =?Windows-1252?Q?uvjNTQiY5DrkNwVPgmeMk1L57CK/ajh7ykoYcVfCCyKQVvvGHkOKkT+X?=
 =?Windows-1252?Q?5G6udPX8kQAVr1BHwCXVuGrASUka4UDgD/dLZrZ5KqKNCz6PmG2ie1xF?=
 =?Windows-1252?Q?6XJLqDU91k1qKGJwNVuyKBQ4w4+ztrXoU89cybdV7iPto44SqhZ21h6M?=
 =?Windows-1252?Q?TOFfsYl8yUv5BPCTQEctG65MTZ4nDdcMOFep4D0ePNhjeac1BIuuk1y2?=
 =?Windows-1252?Q?86ZqLaBCnew81bORBgqiFETtAOCe8UPqYRGDjcDrTlrFPguhgk+wi1eD?=
 =?Windows-1252?Q?+JflK/HqpWHyt9oTWttYUID+DAsfLVXQj86M48uBNX/OgsYtjmyzgLeP?=
 =?Windows-1252?Q?pFnyoCAu40XjWhgWu3RLxMz8T/yGM8rYmffHTnh6JqeNv+0+SA6ohz9l?=
 =?Windows-1252?Q?7YhbnOw0PJKNdPovoCB1jWF7woPW5BJdYoWV9vA4CtHtWY45gL2yEQrp?=
 =?Windows-1252?Q?l6oZNR8sPQ1ZA1gIO2z0iLY9CKCgKaVOTxfv4joXmUw2gKYJgjc+LdKZ?=
 =?Windows-1252?Q?8gu0T23YFugbz8352ZB/578/Jm74IMNQjze0rf/b+q8yaeoKbdCNXXRD?=
 =?Windows-1252?Q?uit57yNFzzDldV+lCETVHKYcqAqOaZj67pGLGX3NsHei5cdZLZg4W6q1?=
 =?Windows-1252?Q?mx2huYRk26Y2SjPPum/DSsni5/ptpDIHEmuZNfkKXT7hZjFMQMtjJQzK?=
 =?Windows-1252?Q?N7CN4m7U?=
X-OriginatorOrg: amd.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 601d08bd-4097-44a0-83b9-08d8e8b674ab
X-MS-Exchange-CrossTenant-AuthSource: BN8PR12MB3505.namprd12.prod.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Mar 2021 20:02:41.3623
 (UTC)
X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted
X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d
X-MS-Exchange-CrossTenant-MailboxType: HOSTED
X-MS-Exchange-CrossTenant-UserPrincipalName: VQDNp4weKZk5B/BxN2JMwyzfi3sas4o2tlfKjjeQ4elyS/4iXW851T1Z5jDaP9QMiwE3y9VxXKi8AqjaP3mR6w==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR12MB1585
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On 3/16/21 2:53 PM, Peter Zijlstra wrote:
> On Tue, Mar 16, 2021 at 04:45:02PM +0100, Jiri Olsa wrote:
>> hi,
>> when running 'perf top' on AMD Rome (/proc/cpuinfo below)
>> with fedora 33 kernel 5.10.22-200.fc33.x86_64
>>
>> we got unknown NMI messages:
>>
>> [  226.700160] Uhhuh. NMI received for unknown reason 3d on CPU 90.
>> [  226.700162] Do you have a strange power saving mode enabled?
>> [  226.700163] Dazed and confused, but trying to continue
>> [  226.769565] Uhhuh. NMI received for unknown reason 3d on CPU 84.
>> [  226.769566] Do you have a strange power saving mode enabled?
>> [  226.769567] Dazed and confused, but trying to continue
>> [  226.769771] Uhhuh. NMI received for unknown reason 2d on CPU 24.
>> [  226.769773] Do you have a strange power saving mode enabled?
>> [  226.769774] Dazed and confused, but trying to continue
>> [  226.812844] Uhhuh. NMI received for unknown reason 2d on CPU 23.
>> [  226.812846] Do you have a strange power saving mode enabled?
>> [  226.812847] Dazed and confused, but trying to continue
>> [  226.893783] Uhhuh. NMI received for unknown reason 2d on CPU 27.
>> [  226.893785] Do you have a strange power saving mode enabled?
>> [  226.893786] Dazed and confused, but trying to continue
>> [  226.900139] Uhhuh. NMI received for unknown reason 2d on CPU 40.
>> [  226.900141] Do you have a strange power saving mode enabled?
>> [  226.900143] Dazed and confused, but trying to continue
>> [  226.908763] Uhhuh. NMI received for unknown reason 3d on CPU 120.
>> [  226.908765] Do you have a strange power saving mode enabled?
>> [  226.908766] Dazed and confused, but trying to continue
>> [  227.751296] Uhhuh. NMI received for unknown reason 2d on CPU 83.
>> [  227.751298] Do you have a strange power saving mode enabled?
>> [  227.751299] Dazed and confused, but trying to continue
>> [  227.752937] Uhhuh. NMI received for unknown reason 3d on CPU 23.
>>
>> also when discussing ths with Borislav, he managed to reproduce easily
>> on his AMD Rome machine
>>
>> any idea?
> 
> Kim is the AMD point person for this I think..

Since perf top invokes precision and therefore IBS,
this looks like it's hitting erratum #1215:

https://developer.amd.com/wp-content/resources/56323-PUB_0.78.pdf

Kim