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 13810C433EF for ; Mon, 9 May 2022 21:54:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230431AbiEIV6E (ORCPT ); Mon, 9 May 2022 17:58:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59204 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231989AbiEIV4a (ORCPT ); Mon, 9 May 2022 17:56:30 -0400 Received: from mail-io1-f70.google.com (mail-io1-f70.google.com [209.85.166.70]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EFB8B2D3F5C for ; Mon, 9 May 2022 14:50:10 -0700 (PDT) Received: by mail-io1-f70.google.com with SMTP id k14-20020a0566022a4e00b0065ae0c238aeso4069593iov.1 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=2+N7ptOjJhzuga3oyytQNEJRjyZu73FeF1KpCDvmpQUvOMYCon8J2En7CS9ECXMs2r xMb8BYzAUUh5IKpjuM+Fn/1FXHGbSrd7yPeXmA89SIDQnzHKNspThKtyDjI8GJUT5bcG nOxE+mpqTJ3UvHgMkwBOuhvn3Mg6LtUqHuzbtpAqxCeT4cLSGDDNM1T18WgSu9OqtQIb dKR66njCBC1SthH+lxFgumtHebS9edSLCBODNKi8K8gWgL05VoMHZbn7910qrZmAi9qK 7IpxBylvoh1fvo8s4ql2NKuIe5zV4QcxbjMdvA/C6NNskna1Y3UB9wL0ra0RIem4kNbz GvWQ== X-Gm-Message-State: AOAM530hx3WXC/H2BrsK7zwiZ9pdzLItoBMvxBVVRJw6/Tpuin2u/yO0 Pa9ZuYMDquc1xN+zeBUlSvchNK3hNweQFIBxVhelv2TZ13YX 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: bpf@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