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=-2.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 665C1C432BE for ; Mon, 2 Aug 2021 18:23:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4D1A760724 for ; Mon, 2 Aug 2021 18:23:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230253AbhHBSXN (ORCPT ); Mon, 2 Aug 2021 14:23:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51356 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230194AbhHBSXK (ORCPT ); Mon, 2 Aug 2021 14:23:10 -0400 Received: from mail-ua1-x92d.google.com (mail-ua1-x92d.google.com [IPv6:2607:f8b0:4864:20::92d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3B59AC061760; Mon, 2 Aug 2021 11:23:01 -0700 (PDT) Received: by mail-ua1-x92d.google.com with SMTP id t25so5436222uar.13; Mon, 02 Aug 2021 11:23:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=6ApN7kLqibhyq1qI7/ZsZatouw7YTs2JP48UHp8aQ/A=; b=lsUKFilECheVKjSF1JXecXfsKOXJnDixp3QcQmPbn5tKCVnyKquYeKSCqr9duESTs1 eQKJveOEWYkZ2y42vAPA3JWEFqGchWZCl6XIv0ixEyewqTy7BKCWtqqODu5T9cwyLEZa +cZKYYgeQwvBYkB3DTM9w9Uy+QOrrSLjlrqiwkZCYHiq5/YniokYTzaRXXfA+WQj/HvI 5wEEct/cFVaQHmdVxPLkrXsGnOQwkxcH7fBoAE2TRomWXFF6i3xKFOcKMkerwzTG9a6Z dm3qOSrsFhGvIWhB+qgz428NcKQLvI2QxTn8Pl0bTbraBd2B3lj5vboE+g2HQOq/iCh6 3oTw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=6ApN7kLqibhyq1qI7/ZsZatouw7YTs2JP48UHp8aQ/A=; b=fe0NvzOUPQKKya1S0dc4ZdQRbeeU6lNXQCx0jpw/Pw4mQPTaDUJYkZJ3FJy/wRjljL /SrxXLQs8hEE6KHrkxJ6xz4nH46Lg01TPyWlrTjv1cDQR4Rh2KjAt1wj9BakR73aW1v8 MgvDTzFCNehl8iz1O2cfr3ARm6cu34jGRW80H86CzRWZ8LAKZXgYm8kpg/e2/4RdzJei gW7+O+YXPzboQhVyOckSWt2Ay1zNFhjkiwJddCNG2yFAZlk0JcSCo+B6JP+2HFsNNcR1 Zw9saTjzI/neF0WT3Bt7dmGCn4eIhI5kLKf0u4sp1EnMP+I0j5N5exsPP03ScNQYxCWO m4LQ== X-Gm-Message-State: AOAM531dXqsNKeSN6P+PWMZR2szNSi2ESKTMaw3OeBS5ji/J7OgEGBt3 wT4qponuHw/zGjYHijGgFIeDA23c4vGMwVmUN6E= X-Google-Smtp-Source: ABdhPJxOGW9lt2I4UeiOBWzfIUEg64BUWAC2wuJshjV0PXtCqkZkrJ/D3hYer3ZuXL4h9KAqQ9EEcAaYjSF9+V0eGOQ= X-Received: by 2002:ab0:7187:: with SMTP id l7mr11832750uao.13.1627928580293; Mon, 02 Aug 2021 11:23:00 -0700 (PDT) MIME-Version: 1.0 References: <8057650.rSI8SBESIY@natalenko.name> <98103103-c517-59d2-a4d6-9b0758cbdfc1@kernel.dk> In-Reply-To: From: jim.cromie@gmail.com Date: Mon, 2 Aug 2021 12:22:34 -0600 Message-ID: Subject: Re: 5.14.0-rc1 KASAN use after free To: Paolo Valente Cc: Jens Axboe , Oleksandr Natalenko , LKML , linux-block@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Aug 2, 2021 at 8:21 AM Paolo Valente wro= te: > > > > > Il giorno 23 lug 2021, alle ore 15:08, jim.cromie@gmail.com ha scritto: > > > > On Sun, Jul 18, 2021 at 5:58 PM Jens Axboe wrote: > >> > >> On 7/18/21 3:08 PM, Oleksandr Natalenko wrote: > >>> + Paolo, Jens et al. > >>> > >>> On =C4=8Dtvrtek 15. =C4=8Dervence 2021 16:32:29 CEST jim.cromie@gmail= .com wrote: > >>>> hi all, > >>>> > >>>> I noticed this report this morning, from 3 days ago, > >>>> about 10 minutes after boot. > >>>> Its easiest to ignore it, and I dont want to make a fuss, > >>>> but it looks useful to someone > >>>> > >>>> > >>>> [ 33.663464] Bluetooth: RFCOMM ver 1.11 > >>>> [ 646.343628] > >>>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D [ > >>>> 646.343649] BUG: KASAN: use-after-free in bfq_get_queue+0x47d/0x900 = [ > >>>> 646.343680] Read of size 8 at addr ffff88810d864a00 by task > >>>> journal-offline/1639 > >> > >> There are only a few commits between 5.13 and master in this area, see > >> attached. I'd just start reverting from the top, one by one, and see > >> which one is causing the issue. Jim, would that be feasible? > >> > > > > oops, didn't see this earlier. > > It hasnt happened since, I can try to recreate mid-next-week > > > > Still nothing? > Nada. up to an hour ago, I was still running that installed kernel. I just rebooted to it and ran a virtme session on it (because of a possible 9p related trigger) no sign of kasan err. Im gonna boot rc4 built in the same build-dir, I dont think Ive messed with the config, but its a long-shot anyway to reproduce, since same kernel image didnt do it 2nd time. > Thanks, > Paolo > > > > >> -- > >> Jens Axboe >