From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5BD17C433F5 for ; Mon, 28 Mar 2022 04:46:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238070AbiC1Erz (ORCPT ); Mon, 28 Mar 2022 00:47:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34810 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238076AbiC1Erv (ORCPT ); Mon, 28 Mar 2022 00:47:51 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id B4CE732069 for ; Sun, 27 Mar 2022 21:46:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1648442769; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=2Qwd4fEDrN/ygaJDceNIaQ4+d0af14IcvLg/VsDrFZk=; b=ZhUw5ycFzRnaiAuEuQwZbYPN0M1jScDGw5XVM8NVzJ5xVqhpOYn1n/rr7wsdtJQjexQaWi J4hMUuaEqttWLB8kDRhj3oCkjfp86gT/h/j8qe/jUjS2PFrYAobnvXt1muwju9SX5SKnig mhNTv5Ew3ziR8qOGRu01QmpI2FecDb0= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-634-DOePw2xVMJic5HtNWfH1xw-1; Mon, 28 Mar 2022 00:46:06 -0400 X-MC-Unique: DOePw2xVMJic5HtNWfH1xw-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id E6C881C05AFB; Mon, 28 Mar 2022 04:46:05 +0000 (UTC) Received: from T590 (ovpn-8-16.pek2.redhat.com [10.72.8.16]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 5AF67C3598C; Mon, 28 Mar 2022 04:46:01 +0000 (UTC) Date: Mon, 28 Mar 2022 12:45:55 +0800 From: Ming Lei To: Mike Galbraith Cc: LKML , Jens Axboe , Christoph Hellwig Subject: Re: LTP zram tests triggers might_sleep splat - bisects to 0a9a25ca7843 ("block: let blkcg_gq grab request queue's refcnt") Message-ID: References: <00f2171be8b25fdeb5c64c1f880dea32763a2722.camel@gmx.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <00f2171be8b25fdeb5c64c1f880dea32763a2722.camel@gmx.de> X-Scanned-By: MIMEDefang 2.85 on 10.11.54.8 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 28, 2022 at 06:21:51AM +0200, Mike Galbraith wrote: > Splat bisected cleanly, verified with a revert afterward. > > (note: "Preemption disabled at:" address tracking looked to be pretty > broken during bisection, so...) It can be fixed by: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/commit/?h=for-5.18/block&id=d578c770c85233af592e54537f93f3831bde7e9a Thanks, Ming