From patchwork Thu Aug 16 18:46:07 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Cody X-Patchwork-Id: 10568045 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3BA035A4 for ; Thu, 16 Aug 2018 18:50:20 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 359602B841 for ; Thu, 16 Aug 2018 18:50:20 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 338162B836; Thu, 16 Aug 2018 18:50:20 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id D15B22B85D for ; Thu, 16 Aug 2018 18:50:19 +0000 (UTC) Received: from localhost ([::1]:57719 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqNLf-000298-6Y for patchwork-qemu-devel@patchwork.kernel.org; Thu, 16 Aug 2018 14:50:19 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38310) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqNHy-0006hw-1W for qemu-devel@nongnu.org; Thu, 16 Aug 2018 14:46:30 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqNHx-0002OD-7j for qemu-devel@nongnu.org; Thu, 16 Aug 2018 14:46:29 -0400 Received: from mx1.redhat.com ([209.132.183.28]:55520) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqNHo-0002IM-8P; Thu, 16 Aug 2018 14:46:21 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 3C3FF30832E0; Thu, 16 Aug 2018 18:46:15 +0000 (UTC) Received: from localhost (ovpn-116-211.phx2.redhat.com [10.3.116.211]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 22B635D6AA; Thu, 16 Aug 2018 18:46:12 +0000 (UTC) From: Jeff Cody To: qemu-devel@nongnu.org Date: Thu, 16 Aug 2018 14:46:07 -0400 Message-Id: <68da830d390658684c0b5688c4c91858c8ea3930.1534444235.git.jcody@redhat.com> In-Reply-To: References: In-Reply-To: References: X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.44]); Thu, 16 Aug 2018 18:46:15 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v2 1/2] block: for jobs, do not clear user_paused until after the resume X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jsnow@redhat.com, qemu-stable@nongnu.org, qemu-block@nongnu.org Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP The function job_cancel_async() will always cause an assert for blockjob user resume. We set job->user_paused to false, and then call job->driver->user_resume(). In the case of blockjobs, this is the block_job_user_resume() function. In that function, we assert that job.user_paused is set to true. Unfortunately, right before calling this function, it has explicitly been set to false. The fix is pretty simple: set job->user_paused to false only after the job user_resume() function has been called. Reviewed-by: John Snow Reviewed-by: Eric Blake Signed-off-by: Jeff Cody --- job.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/job.c b/job.c index fa671b431a..e36ebaafd8 100644 --- a/job.c +++ b/job.c @@ -732,10 +732,10 @@ static void job_cancel_async(Job *job, bool force) { if (job->user_paused) { /* Do not call job_enter here, the caller will handle it. */ - job->user_paused = false; if (job->driver->user_resume) { job->driver->user_resume(job); } + job->user_paused = false; assert(job->pause_count > 0); job->pause_count--; }