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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Mon, 15 Apr 2019 11:12:19 +0100 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x3FACIKY42663954 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 15 Apr 2019 10:12:18 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0506152050; Mon, 15 Apr 2019 10:12:18 +0000 (GMT) Received: from localhost.localdomain.com (unknown [9.145.161.180]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTP id AE8325205A; Mon, 15 Apr 2019 10:12:16 +0000 (GMT) From: Anju T Sudhakar To: mpe@ellerman.id.au Subject: [PATCH v4 3/5] powerpc/perf: Add privileged access check for thread_imc Date: Mon, 15 Apr 2019 15:42:02 +0530 X-Mailer: git-send-email 2.17.2 In-Reply-To: <20190415101204.15125-1-anju@linux.vnet.ibm.com> References: <20190415101204.15125-1-anju@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 19041510-0012-0000-0000-0000030EE988 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19041510-0013-0000-0000-000021471D67 Message-Id: <20190415101204.15125-4-anju@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-04-15_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-1904150072 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: maddy@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, anju@linux.vnet.ibm.com Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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 51f1d3eaaa6d..7fe258e17dfe 100644 --- a/arch/powerpc/perf/imc-pmu.c +++ b/arch/powerpc/perf/imc-pmu.c @@ -859,6 +859,9 @@ 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;