From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 63592C282C2 for ; Thu, 7 Feb 2019 07:03:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3A6CF2054F for ; Thu, 7 Feb 2019 07:03:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726936AbfBGHDt (ORCPT ); Thu, 7 Feb 2019 02:03:49 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:41480 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726759AbfBGHDe (ORCPT ); Thu, 7 Feb 2019 02:03:34 -0500 Received: from pps.filterd (m0098393.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x176tqsc008532 for ; Thu, 7 Feb 2019 02:03:33 -0500 Received: from e06smtp07.uk.ibm.com (e06smtp07.uk.ibm.com [195.75.94.103]) by mx0a-001b2d01.pphosted.com with ESMTP id 2qges5jpkf-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 07 Feb 2019 02:03:33 -0500 Received: from localhost by e06smtp07.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 7 Feb 2019 07:03:31 -0000 Received: from b06cxnps4074.portsmouth.uk.ibm.com (9.149.109.196) by e06smtp07.uk.ibm.com (192.168.101.137) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Thu, 7 Feb 2019 07:03:29 -0000 Received: from b06wcsmtp001.portsmouth.uk.ibm.com (b06wcsmtp001.portsmouth.uk.ibm.com [9.149.105.160]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x1773S318782130 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 7 Feb 2019 07:03:28 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 272F1A4062; Thu, 7 Feb 2019 07:03:28 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0E7C1A405F; Thu, 7 Feb 2019 07:03:27 +0000 (GMT) Received: from localhost.localdomain.com (unknown [9.145.146.114]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTP; Thu, 7 Feb 2019 07:03:26 +0000 (GMT) From: Anju T Sudhakar To: mpe@ellerman.id.au Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, maddy@linux.vnet.ibm.com, anju@linux.vnet.ibm.com Subject: [PATCH v3 3/5] powerpc/perf: Add privileged access check for thread_imc Date: Thu, 7 Feb 2019 12:33:10 +0530 X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190207070312.5150-1-anju@linux.vnet.ibm.com> References: <20190207070312.5150-1-anju@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 19020707-0028-0000-0000-00000345990D X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19020707-0029-0000-0000-00002403A84C Message-Id: <20190207070312.5150-4-anju@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-02-07_05:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1902070054 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Madhavan Srinivasan Add code to restrict user access to thread_imc pmu since some event report privilege level information. Fixes: f74c89bd80fb3 ('powerpc/perf: Add thread IMC PMU support') Signed-off-by: Madhavan Srinivasan Signed-off-by: Anju T Sudhakar --- arch/powerpc/perf/imc-pmu.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/powerpc/perf/imc-pmu.c b/arch/powerpc/perf/imc-pmu.c index 3bef46f8417d..5ca80545a849 100644 --- a/arch/powerpc/perf/imc-pmu.c +++ b/arch/powerpc/perf/imc-pmu.c @@ -877,6 +877,9 @@ static int thread_imc_event_init(struct perf_event *event) if (event->attr.type != event->pmu->type) return -ENOENT; + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; + /* Sampling not supported */ if (event->hw.sample_period) return -EINVAL; -- 2.17.1