From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:44052 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965182AbeCGTpJ (ORCPT ); Wed, 7 Mar 2018 14:45:09 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Paolo Valente , Omar Sandoval , Bart Van Assche , Ming Lei , Jens Axboe Subject: [PATCH 4.14 026/110] block: kyber: fix domain token leak during requeue Date: Wed, 7 Mar 2018 11:38:09 -0800 Message-Id: <20180307191043.068755214@linuxfoundation.org> In-Reply-To: <20180307191039.748351103@linuxfoundation.org> References: <20180307191039.748351103@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ming Lei commit ba989a01469d027861e55c8f1121edadef757797 upstream. When requeuing request, the domain token should have been freed before re-inserting the request to io scheduler. Otherwise, the assigned domain token will be leaked, and IO hang can be caused. Cc: Paolo Valente Cc: Omar Sandoval Cc: stable@vger.kernel.org Reviewed-by: Bart Van Assche Signed-off-by: Ming Lei Signed-off-by: Jens Axboe Signed-off-by: Greg Kroah-Hartman --- block/kyber-iosched.c | 1 + 1 file changed, 1 insertion(+) --- a/block/kyber-iosched.c +++ b/block/kyber-iosched.c @@ -814,6 +814,7 @@ static struct elevator_type kyber_sched .limit_depth = kyber_limit_depth, .prepare_request = kyber_prepare_request, .finish_request = kyber_finish_request, + .requeue_request = kyber_finish_request, .completed_request = kyber_completed_request, .dispatch_request = kyber_dispatch_request, .has_work = kyber_has_work,