From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:56580 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753313AbdHTTBL (ORCPT ); Sun, 20 Aug 2017 15:01:11 -0400 Subject: Patch "genirq/ipi: Fixup checks against nr_cpu_ids" has been added to the 4.12-stable tree To: adobriyan@gmail.com, gregkh@linuxfoundation.org, tglx@linutronix.de Cc: , From: Date: Sun, 20 Aug 2017 12:01:12 -0700 Message-ID: <15032556720154@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled genirq/ipi: Fixup checks against nr_cpu_ids to the 4.12-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: genirq-ipi-fixup-checks-against-nr_cpu_ids.patch and it can be found in the queue-4.12 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 8fbbe2d7cc478d1544f41f2271787c993c23a4f6 Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Sat, 19 Aug 2017 12:57:51 +0300 Subject: genirq/ipi: Fixup checks against nr_cpu_ids From: Alexey Dobriyan commit 8fbbe2d7cc478d1544f41f2271787c993c23a4f6 upstream. 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 Link: http://lkml.kernel.org/r/20170819095751.GB27864@avx2 Signed-off-by: Greg Kroah-Hartman --- kernel/irq/ipi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/kernel/irq/ipi.c +++ b/kernel/irq/ipi.c @@ -165,7 +165,7 @@ irq_hw_number_t ipi_get_hwirq(unsigned i 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_ch 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) { Patches currently in stable-queue which might be from adobriyan@gmail.com are queue-4.12/genirq-ipi-fixup-checks-against-nr_cpu_ids.patch