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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 510D7C433EF for ; Sun, 3 Oct 2021 13:05:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 276BD61A58 for ; Sun, 3 Oct 2021 13:05:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230207AbhJCNG4 (ORCPT ); Sun, 3 Oct 2021 09:06:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49410 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230050AbhJCNG4 (ORCPT ); Sun, 3 Oct 2021 09:06:56 -0400 Received: from mail-il1-x134.google.com (mail-il1-x134.google.com [IPv6:2607:f8b0:4864:20::134]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BA299C0613EC for ; Sun, 3 Oct 2021 06:05:08 -0700 (PDT) Received: by mail-il1-x134.google.com with SMTP id b6so15569602ilv.0 for ; Sun, 03 Oct 2021 06:05:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20210112.gappssmtp.com; s=20210112; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=iQO0zbqGfFg861M8tcJXeO1xQAbguD5zVE5yDhTAq3Y=; b=5rKQzjoR0KmhW35Gf+kkJa4DaXD/gF9O22vc2aZ9HtWQZr/XZCBQtjSsWdG7j49h+B toYUQWK5dPAgLasgyJyRspJytDTJbgywK0JZ0grwlTz07k6Gng1GV1RZDzfmyfbkJ2sl OpH+y8z/048WsxX+nufbj6+DLJd3ngtPbLY2CCfAedmQAleTu2kv+tP/kKG+w4tePXP/ ZTJt8CLYHp2OEalrxO4qHLPHfv+E5eAeSM/9Q02fWup5jtaeXMpSMG+YR5FLmp/cKseZ AUdSBI/nDoN8zkoyacXooLY/+rp4ZpVSUvRA7wxbnWrQRN4lgwLwvsmO1PZOT3JePLcj 5iHw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=iQO0zbqGfFg861M8tcJXeO1xQAbguD5zVE5yDhTAq3Y=; b=gib1srwA7x6FhxotzvVfhefCan7GhC5LGxO4Lxx2PmHA7AsodV/ZvP1FN18RlSlmhj fNoQrhD3pxeCMIJlLBtPU4nttiDGn9U129gPJZTCuQ81KLriGZJQ1fvEGuhmzsjZuEFy OScM2sZrxmcGC3POZPjJZQiKHqItx1iU4/fChw2DLBAKXMeoP9AfxybbZlGQG6gAT26Q vCs8gwmN8fy1ODcEijAf/kY6mykdnA1wcmZTHfVFjcMLt+sNmr3VnAhgN3y7nOIl00Kx y/MBlKAbpzeghUfceRgvTyu+Rhf4iJ3HmrQROH2S2MBdNJZjGBE+foHxgd/XyOFcf1KT /tmg== X-Gm-Message-State: AOAM5304slopHcRxn389IKtwkWtA0XvH9U8V4TPeD4/RwbDd3nGHiozw ZOWSS7rf9Lqs9nG+GF4G5fkktZRNEryy9w== X-Google-Smtp-Source: ABdhPJyTHYN16jg4GJgQQ/fC4998eP2mkmEDPFQPECRwJ5w1/p9Jz0MWmUIjzwPZ24oN0r6ijRDGnw== X-Received: by 2002:a05:6e02:16c6:: with SMTP id 6mr1503168ilx.220.1633266308016; Sun, 03 Oct 2021 06:05:08 -0700 (PDT) Received: from [192.168.1.116] ([66.219.217.159]) by smtp.gmail.com with ESMTPSA id e10sm6999168iov.10.2021.10.03.06.05.07 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 03 Oct 2021 06:05:07 -0700 (PDT) Subject: Re: [syzbot] BUG: unable to handle kernel NULL pointer dereference in kiocb_done To: syzbot , asml.silence@gmail.com, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com References: <00000000000062ec7d05cd6dd2f6@google.com> From: Jens Axboe Message-ID: Date: Sun, 3 Oct 2021 07:05:04 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <00000000000062ec7d05cd6dd2f6@google.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On 10/3/21 1:34 AM, syzbot wrote: > syzbot suspects this issue was fixed by commit: > > commit b8ce1b9d25ccf81e1bbabd45b963ed98b2222df8 > Author: Pavel Begunkov > Date: Tue Aug 31 13:13:11 2021 +0000 > > io_uring: don't submit half-prepared drain request > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17b14b67300000 > start commit: 4ac6d90867a4 Merge tag 'docs-5.15' of git://git.lwn.net/li.. > git tree: upstream > kernel config: https://syzkaller.appspot.com/x/.config?x=3c3a5498e99259cf > dashboard link: https://syzkaller.appspot.com/bug?extid=726f2ce6dbbf2ad8d133 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=124a3b49300000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=142e610b300000 > > If the result looks correct, please mark the issue as fixed by replying with: #syz fix: io_uring: don't submit half-prepared drain request -- Jens Axboe