From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id EE38C46BE5; Tue, 22 Jul 2025 14:01:51 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 7C95B40685; Tue, 22 Jul 2025 14:01:12 +0200 (CEST) Received: from mx0b-0016f401.pphosted.com (mx0b-0016f401.pphosted.com [67.231.156.173]) by mails.dpdk.org (Postfix) with ESMTP id 746004067D for ; Tue, 22 Jul 2025 14:01:11 +0200 (CEST) Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 56M72629010873; Tue, 22 Jul 2025 05:01:10 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=pfpt0220; bh=J 0OKrcg7d1Ljahf089tMgNuat3ruvBtaiRh7alnR/Xs=; b=NA+HoFFtzc/x39e+j jEvZZdL/3X3WlTDBgpZgTdjeOkebGGu4UDPrb2LC2H78p69VLrfzRO9DggW9PWr0 I18A0Hu0cCNioDTDz7gce/ZQWq6cbuLoJkKYyA5J4QrbHrg1nloKe7+CjBb3OxgM jMSr0IcPM5TVIy87rUj1VznHWOfzceTUs0qMkFpCgmNP5izLZO986ekySnPQ6eeW 33XqIMvLTPZs8/IfdkmHmGaekDtFUMfsKXifg7EIScZFBAeT1WXKqsfyn3/3VqmD i7SH57Q0bNCqiwdKgmS/FQoMiEFSuOoj7NqicVlaHDAA5gvwrUJKJ8KSskOvsEAe 7M8eg== Received: from dc5-exch05.marvell.com ([199.233.59.128]) by mx0b-0016f401.pphosted.com (PPS) with ESMTPS id 481y91sbev-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 22 Jul 2025 05:01:10 -0700 (PDT) Received: from DC5-EXCH05.marvell.com (10.69.176.209) by DC5-EXCH05.marvell.com (10.69.176.209) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.4; Tue, 22 Jul 2025 05:01:09 -0700 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH05.marvell.com (10.69.176.209) with Microsoft SMTP Server id 15.2.1544.4 via Frontend Transport; Tue, 22 Jul 2025 05:01:09 -0700 Received: from cavium-optiplex-3070-BM15.. (unknown [10.28.34.39]) by maili.marvell.com (Postfix) with ESMTP id 1F8B43F7045; Tue, 22 Jul 2025 05:01:06 -0700 (PDT) From: Tomasz Duszynski To: CC: , , , , , Subject: [PATCH v8 8/8] lib/pmu: fix out-of-bound access Date: Tue, 22 Jul 2025 14:00:41 +0200 Message-ID: <20250722120041.2718227-9-tduszynski@marvell.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250722120041.2718227-1-tduszynski@marvell.com> References: <20250627154107.3405768-1-tduszynski@marvell.com> <20250722120041.2718227-1-tduszynski@marvell.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNzIyMDA5OCBTYWx0ZWRfXzVgBifJlX9hr N1WXGtUCo6LPLZoMhmFbTuwI8j45/BOMQgH4F3d06kelbE7bA2xSnhUO7FS5JKQTU8/aaXvPmJ5 VYiNDX2nYDf1HB+8w+NsIEJoZ5KLJ+aGtwgs2J3pV9xw5oycxNgedASp+dzbedLrX7zfCOPWcAB pMAr9GF966dokcwpWiv90svEjcTIOaXRnZ6+TcU8KppJ4NMy9m/ZIpad82tPvUNbw4Dq8s4hOZN fwczkRNuU/0KgX+BVWp5TaJ6NKabm3rPH4f2lA4o+bigJmTNJ2wI3iMTxJzjmraFUcnHQJP8nC7 dYwsCYclfbxevnE4M7RLNVdlj1mpNu4lKbF3XkTwxoVovQrBF4/m+ARl8aaI9hODN38sulR0R2I nElBJ6QmoygXbUXABcvnbqrYpwa/mDDb89H+z4rVB9zoqn8BYQDzQSdz5zI0pXVVaD5dWQkp X-Proofpoint-ORIG-GUID: 2VUm2MEx9SJdziI-H6ZfKHWSNBgyyAE_ X-Proofpoint-GUID: 2VUm2MEx9SJdziI-H6ZfKHWSNBgyyAE_ X-Authority-Analysis: v=2.4 cv=RfGQC0tv c=1 sm=1 tr=0 ts=687f7d86 cx=c_pps a=rEv8fa4AjpPjGxpoe8rlIQ==:117 a=rEv8fa4AjpPjGxpoe8rlIQ==:17 a=Wb1JkmetP80A:10 a=M5GUcnROAAAA:8 a=rsDlWQ7q-kAZFu0dnB0A:9 a=OBjm3rFKGHvpk9ecZwUJ:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-07-22_02,2025-07-21_02,2025-03-28_01 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Make sure that out-of-bound access does not happen by saving one byte in buffer for NUL terminator. Fixes: a8926a65ad1d ("pmu: support Arm") Fixes: 960c43184c4d ("pmu: introduce library for reading PMU events") Cc: tduszynski@marvell.com Signed-off-by: Tomasz Duszynski --- lib/pmu/pmu.c | 2 +- lib/pmu/pmu_arm64.c | 3 ++- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/lib/pmu/pmu.c b/lib/pmu/pmu.c index 742829cf9d..8960faa7d0 100644 --- a/lib/pmu/pmu.c +++ b/lib/pmu/pmu.c @@ -126,7 +126,7 @@ get_event_config(const char *name, uint64_t config[3]) if (fp == NULL) return -errno; - ret = fread(buf, 1, sizeof(buf), fp); + ret = fread(buf, 1, sizeof(buf) - 1, fp); if (ret == 0) { fclose(fp); diff --git a/lib/pmu/pmu_arm64.c b/lib/pmu/pmu_arm64.c index 2c40b5f702..f3a817b42f 100644 --- a/lib/pmu/pmu_arm64.c +++ b/lib/pmu/pmu_arm64.c @@ -24,12 +24,13 @@ read_attr_int(const char *path, int *val) if (fd == -1) return -errno; - ret = read(fd, buf, sizeof(buf)); + ret = read(fd, buf, sizeof(buf) - 1); if (ret == -1) { close(fd); return -errno; } + buf[ret] = '\0'; *val = strtol(buf, NULL, 10); close(fd); -- 2.34.1