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=-3.9 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 D194CC433E1 for ; Wed, 19 Aug 2020 00:00:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8551A207FB for ; Wed, 19 Aug 2020 00:00:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="e9e1jYJ1" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727775AbgHSAAZ (ORCPT ); Tue, 18 Aug 2020 20:00:25 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:52660 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726676AbgHSAAY (ORCPT ); Tue, 18 Aug 2020 20:00:24 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1597795223; 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=eOn0ZILfzM23ljxe/i9GUKkqEJ5k7iDa6Ji70/MpTwA=; b=e9e1jYJ1UkR62LiGZYVmUjjxv/4q1nZcncmWKJ/QBfiq8Pbxpjc1mz7vtBOwTEfVeqE2dN PmyOUsAVWjY62MhtZTfsmTGewdevW95NhLV295gTeKDlywu5zeUF8nzNkw9P+8z9s36zFl qvX06oNgykpzd4SZaAUdJTAU9lWJVvY= 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-473-KruE4g-GNOaipWmY0zK3yw-1; Tue, 18 Aug 2020 20:00:21 -0400 X-MC-Unique: KruE4g-GNOaipWmY0zK3yw-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 884581DDFC; Wed, 19 Aug 2020 00:00:20 +0000 (UTC) Received: from T590 (ovpn-12-56.pek2.redhat.com [10.72.12.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 780D4101417D; Wed, 19 Aug 2020 00:00:14 +0000 (UTC) Date: Wed, 19 Aug 2020 08:00:09 +0800 From: Ming Lei To: John Garry Cc: "axboe@kernel.dk" , "linux-block@vger.kernel.org" , Christoph Hellwig Subject: Re: [REPORT] BUG: KASAN: use-after-free in bt_iter+0x80/0xf8 Message-ID: <20200819000009.GB2712797@T590> References: <8376443a-ec1b-0cef-8244-ed584b96fa96@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Tue, Aug 18, 2020 at 07:19:57PM +0100, John Garry wrote: > On 18/08/2020 13:03, John Garry wrote: > > Hi guys, > > > > JFYI, While doing some testing on v5.9-rc1, I stumbled across this: > > I bisected to here (hopefully without mistake): This one is a long-term problem, see the following discussion: https://lore.kernel.org/linux-block/1553492318-1810-1-git-send-email-jianchao.w.wang@oracle.com/ Thanks, Ming