From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751449AbdIPSbG (ORCPT ); Sat, 16 Sep 2017 14:31:06 -0400 Received: from terminus.zytor.com ([65.50.211.136]:50007 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751297AbdIPSbD (ORCPT ); Sat, 16 Sep 2017 14:31:03 -0400 Date: Sat, 16 Sep 2017 11:24:57 -0700 From: tip-bot for Thomas Gleixner Message-ID: Cc: tony.luck@intel.com, bp@alien8.de, lenb@kernel.org, marc.zyngier@arm.com, joro@8bytes.org, rostedt@goodmis.org, yu.c.chen@intel.com, jgross@suse.com, kys@microsoft.com, peterz@infradead.org, mingo@kernel.org, hch@lst.de, boris.ostrovsky@oracle.com, pbonzini@redhat.com, linux-kernel@vger.kernel.org, dan.j.williams@intel.com, rjw@rjwysocki.net, akataria@vmware.com, hpa@zytor.com, rui.zhang@intel.com, arjan@linux.intel.com, tglx@linutronix.de Reply-To: hch@lst.de, mingo@kernel.org, peterz@infradead.org, kys@microsoft.com, boris.ostrovsky@oracle.com, pbonzini@redhat.com, linux-kernel@vger.kernel.org, dan.j.williams@intel.com, akataria@vmware.com, rjw@rjwysocki.net, rui.zhang@intel.com, arjan@linux.intel.com, hpa@zytor.com, tglx@linutronix.de, tony.luck@intel.com, lenb@kernel.org, bp@alien8.de, marc.zyngier@arm.com, rostedt@goodmis.org, yu.c.chen@intel.com, joro@8bytes.org, jgross@suse.com In-Reply-To: <20170913213152.272283444@linutronix.de> References: <20170913213152.272283444@linutronix.de> To: linux-tip-commits@vger.kernel.org Subject: [tip:irq/urgent] genirq: Fix cpumask check in __irq_startup_managed() Git-Commit-ID: 9cb067ef8a10bb13112e4d1c0ea996ec96527422 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: 9cb067ef8a10bb13112e4d1c0ea996ec96527422 Gitweb: http://git.kernel.org/tip/9cb067ef8a10bb13112e4d1c0ea996ec96527422 Author: Thomas Gleixner AuthorDate: Wed, 13 Sep 2017 23:29:03 +0200 Committer: Thomas Gleixner CommitDate: Sat, 16 Sep 2017 20:20:56 +0200 genirq: Fix cpumask check in __irq_startup_managed() The result of cpumask_any_and() is invalid when result greater or equal nr_cpu_ids. The current check is checking for greater only. Fix it. Fixes: 761ea388e8c4 ("genirq: Handle managed irqs gracefully in irq_startup()") Signed-off-by: Thomas Gleixner Cc: Boris Ostrovsky Cc: Juergen Gross Cc: Tony Luck Cc: Chen Yu Cc: Marc Zyngier Cc: Alok Kataria Cc: Joerg Roedel Cc: "Rafael J. Wysocki" Cc: Steven Rostedt Cc: Christoph Hellwig Cc: Peter Zijlstra Cc: Borislav Petkov Cc: stable@vger.kernel.org Cc: Paolo Bonzini Cc: Rui Zhang Cc: "K. Y. Srinivasan" Cc: Arjan van de Ven Cc: Dan Williams Cc: Len Brown Link: http://lkml.kernel.org/r/20170913213152.272283444@linutronix.de --- kernel/irq/chip.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index f51b7b6..6fc89fd 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -202,7 +202,7 @@ __irq_startup_managed(struct irq_desc *desc, struct cpumask *aff, bool force) irqd_clr_managed_shutdown(d); - if (cpumask_any_and(aff, cpu_online_mask) > nr_cpu_ids) { + if (cpumask_any_and(aff, cpu_online_mask) >= nr_cpu_ids) { /* * Catch code which fiddles with enable_irq() on a managed * and potentially shutdown IRQ. Chained interrupt