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 X-Spam-Level: X-Spam-Status: No, score=-6.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7F9C6C432BE for ; Wed, 1 Sep 2021 01:35:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 60DA161027 for ; Wed, 1 Sep 2021 01:35:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241477AbhIABgy (ORCPT ); Tue, 31 Aug 2021 21:36:54 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:29514 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241192AbhIABgx (ORCPT ); Tue, 31 Aug 2021 21:36:53 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1630460157; 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=ig4axNJNT0Dq5sJr3sZt7gc+PdhIceOOKtmcIYoEfDI=; b=f08bM1BxGRDY0hYU1vql+ik1ZkWmFsM2v58gR5bekMtIQjDIFXSVtZdTl/ZQaQxR4Vaeqq tGg8/7jV61eHuTTUiDpoqZ93BfTvwFZkO6tZ9Q5eEy4bo78Ovkdt3ugelFlPzD2u4FscK8 GsNtci13yChmZMzDpkbkPG54mJoND0I= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-299-xK9uHLSNOXmXZ24bQc0QJg-1; Tue, 31 Aug 2021 21:35:56 -0400 X-MC-Unique: xK9uHLSNOXmXZ24bQc0QJg-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 172801853028; Wed, 1 Sep 2021 01:35:55 +0000 (UTC) Received: from T590 (ovpn-8-17.pek2.redhat.com [10.72.8.17]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 25B3C27CA8; Wed, 1 Sep 2021 01:35:49 +0000 (UTC) Date: Wed, 1 Sep 2021 09:35:44 +0800 From: Ming Lei To: Martin Svec Cc: linux-block@vger.kernel.org Subject: Re: NULL pointer dereference in blk_mq_put_rq_ref (LTS kernel 5.10.56) Message-ID: References: <1706c570-6c07-4eb7-219f-de3366e54077@zoner.cz> <996b8008-f7ec-4752-e207-669fe88021df@zoner.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <996b8008-f7ec-4752-e207-669fe88021df@zoner.cz> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Tue, Aug 31, 2021 at 12:30:57PM +0200, Martin Svec wrote: > Hello Ming, > > thanks a lot. I don't see the patches in 5.10 stable queue yet, is it safe to apply them on top of > 5.10.60 LTS kernel? Yeah, both are fix on 2e315dc07df0 ("blk-mq: grab rq->refcount before calling ->fn in blk_mq_tagset_busy_iter") which is in 5.10.60 stable tree, so safe to apply them. Thanks, Ming