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 B856EC433EF for ; Mon, 9 May 2022 21:54:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230521AbiEIV6G (ORCPT ); Mon, 9 May 2022 17:58:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57582 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231980AbiEIV43 (ORCPT ); Mon, 9 May 2022 17:56:29 -0400 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EF6272D3F59 for ; Mon, 9 May 2022 14:50:10 -0700 (PDT) Received: by mail-il1-f197.google.com with SMTP id l8-20020a056e021aa800b002cf778c63caso5333295ilv.10 for ; Mon, 09 May 2022 14:50:10 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=s2rmpyNyFEujAf+EJYBoIEjX5MtLaffn8+X0o9N5fgE=; b=OSsdeIb7E7WRSnQDYIjGioqPTReCevnEOsU+x+rY4+Gq9Zc/ii1C16G0Zss3d6Q8Uz 9tMwWXXxRmuYD4NzgUtOsGB6igDH/assPkYWOEScYgW0wv7mKRx8JvoiR133CxG/C5C1 H1hCo5ofVtFIOWSNyfDDQlpP4B9dErzOq9lcoHq3BqUC/EhxMQ381xpzMkdIQPVn8+63 BB3sh5+A3GUMfj27+vvxUPVTZ7AUxxXKSqOtrBRLZFyAKPqBRnVZEaT0NrbZpeNImx/X 6y0nQys9m6u1YPceXs5rbkcLCpMbbprdT5/65Hq9aluQNA4uXdeCIpRA4IHj41itzr1M P0Gg== X-Gm-Message-State: AOAM531EhjJHurnFsph89lREsRgfcAxU0SjubuAfTn0DzNgTl5bbwdQe e+2htacq9a9pUjV1D+9pZJNeCPo/eGiCchPZvM7hh0pv2emy X-Google-Smtp-Source: ABdhPJwBVtl04Ej8XUy6iLjBCkDUNPExpqGoo3a5jGV8ypU3eIqqfYkoQPwIMtXgmETBrBFu7BHvBe/1eA2T9oXxg64g8WR0pnz3 MIME-Version: 1.0 X-Received: by 2002:a05:6e02:214b:b0:2cf:21fa:cce6 with SMTP id d11-20020a056e02214b00b002cf21facce6mr7280704ilv.160.1652133010262; Mon, 09 May 2022 14:50:10 -0700 (PDT) Date: Mon, 09 May 2022 14:50:10 -0700 In-Reply-To: <00000000000029572505de968021@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000032d06e05de9b3136@google.com> Subject: Re: [syzbot] KASAN: use-after-free Read in bio_poll From: syzbot To: andrii@kernel.org, ast@kernel.org, axboe@kernel.dk, bpf@vger.kernel.org, daniel@iogearbox.net, hch@lst.de, john.fastabend@gmail.com, kafai@fb.com, kpsingh@kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, ming.lei@redhat.com, netdev@vger.kernel.org, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, yhs@fb.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org syzbot has bisected this issue to: commit 0f38d76646157357fcfa02f50575ea044830c494 Author: Christoph Hellwig Date: Tue Oct 12 10:40:45 2021 +0000 blk-mq: cleanup blk_mq_submit_bio bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12506f7ef00000 start commit: c5eb0a61238d Linux 5.18-rc6 git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=11506f7ef00000 console output: https://syzkaller.appspot.com/x/log.txt?x=16506f7ef00000 kernel config: https://syzkaller.appspot.com/x/.config?x=78013caa620443d6 dashboard link: https://syzkaller.appspot.com/bug?extid=99938118dfd9e1b0741a syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1484cbc1f00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10c7026cf00000 Reported-by: syzbot+99938118dfd9e1b0741a@syzkaller.appspotmail.com Fixes: 0f38d7664615 ("blk-mq: cleanup blk_mq_submit_bio") For information about bisection process see: https://goo.gl/tpsmEJ#bisection