From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752716AbdHTI6Z (ORCPT ); Sun, 20 Aug 2017 04:58:25 -0400 Received: from terminus.zytor.com ([65.50.211.136]:59657 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751549AbdHTI6Y (ORCPT ); Sun, 20 Aug 2017 04:58:24 -0400 Date: Sun, 20 Aug 2017 01:56:12 -0700 From: tip-bot for Alexey Dobriyan Message-ID: Cc: tglx@linutronix.de, linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@kernel.org, adobriyan@gmail.com Reply-To: linux-kernel@vger.kernel.org, tglx@linutronix.de, adobriyan@gmail.com, mingo@kernel.org, hpa@zytor.com In-Reply-To: <20170819095751.GB27864@avx2> References: <20170819095751.GB27864@avx2> To: linux-tip-commits@vger.kernel.org Subject: [tip:irq/urgent] genirq/ipi: Fixup checks against nr_cpu_ids Git-Commit-ID: 8fbbe2d7cc478d1544f41f2271787c993c23a4f6 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 8fbbe2d7cc478d1544f41f2271787c993c23a4f6 Gitweb: http://git.kernel.org/tip/8fbbe2d7cc478d1544f41f2271787c993c23a4f6 Author: Alexey Dobriyan AuthorDate: Sat, 19 Aug 2017 12:57:51 +0300 Committer: Thomas Gleixner CommitDate: Sun, 20 Aug 2017 10:49:05 +0200 genirq/ipi: Fixup checks against nr_cpu_ids Valid CPU ids are [0, nr_cpu_ids-1] inclusive. Fixes: 3b8e29a82dd1 ("genirq: Implement ipi_send_mask/single()") Fixes: f9bce791ae2a ("genirq: Add a new function to get IPI reverse mapping") Signed-off-by: Alexey Dobriyan Signed-off-by: Thomas Gleixner Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/20170819095751.GB27864@avx2 --- kernel/irq/ipi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/irq/ipi.c b/kernel/irq/ipi.c index 1a9abc1..259a22a 100644 --- a/kernel/irq/ipi.c +++ b/kernel/irq/ipi.c @@ -165,7 +165,7 @@ irq_hw_number_t ipi_get_hwirq(unsigned int irq, unsigned int cpu) struct irq_data *data = irq_get_irq_data(irq); struct cpumask *ipimask = data ? irq_data_get_affinity_mask(data) : NULL; - if (!data || !ipimask || cpu > nr_cpu_ids) + if (!data || !ipimask || cpu >= nr_cpu_ids) return INVALID_HWIRQ; if (!cpumask_test_cpu(cpu, ipimask)) @@ -195,7 +195,7 @@ static int ipi_send_verify(struct irq_chip *chip, struct irq_data *data, if (!chip->ipi_send_single && !chip->ipi_send_mask) return -EINVAL; - if (cpu > nr_cpu_ids) + if (cpu >= nr_cpu_ids) return -EINVAL; if (dest) {