From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932696AbbJMQrH (ORCPT ); Tue, 13 Oct 2015 12:47:07 -0400 Received: from mx1.redhat.com ([209.132.183.28]:47598 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932449AbbJMQrC (ORCPT ); Tue, 13 Oct 2015 12:47:02 -0400 From: Jeff Moyer To: Raghavendra K T Cc: , , , , , Subject: Re: [PATCH] block-mq:Fix the null memory access while setting tags cpumask References: <1444713927-16261-1-git-send-email-raghavendra.kt@linux.vnet.ibm.com> X-PGP-KeyID: 1F78E1B4 X-PGP-CertKey: F6FE 280D 8293 F72C 65FD 5A58 1FF8 A7CA 1F78 E1B4 X-PCLoadLetter: What the f**k does that mean? Date: Tue, 13 Oct 2015 12:47:00 -0400 In-Reply-To: <1444713927-16261-1-git-send-email-raghavendra.kt@linux.vnet.ibm.com> (Raghavendra K. T.'s message of "Tue, 13 Oct 2015 10:55:27 +0530") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Raghavendra K T writes: > In nr_hw_queues >1 cases when certain number of cpus are onlined/or > offlined, that results change in request_queue map in block-mq layer, > we see the kernel dumping like: What version is that patch against? This problem should be fixed by the patch set from Akinobu Mita. I tested cpu hot-plugging on my system with an nvme device, and it is fixed there on mainline. Cheers, Jeff