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=-4.0 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, 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 D4A8AC433E4 for ; Thu, 16 Jul 2020 05:00:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A891320787 for ; Thu, 16 Jul 2020 05:00:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726230AbgGPFAN (ORCPT ); Thu, 16 Jul 2020 01:00:13 -0400 Received: from mail-il1-f197.google.com ([209.85.166.197]:37005 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725935AbgGPFAG (ORCPT ); Thu, 16 Jul 2020 01:00:06 -0400 Received: by mail-il1-f197.google.com with SMTP id x23so2901136ilk.4 for ; Wed, 15 Jul 2020 22:00:06 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=cE1hhRVuLf2gZer2Ucpnx9HKI06D31CoZ/RNlVo8Pe0=; b=Qc+CXZhldrBbmPciQDqGTsV0u0Ky3eickEkhndbU1KQniRyBHslWI0PR/lwHnOy2o9 n4Gl2ACdyEA/kumuU6mKAOsigtzKiths75fVYbDOxtKW+wbHrpz1HatHYhYk14+Zo7pm z2VW8FFP2+epLTCkpK4IplW2c4PyH+4qEk/AYEy07AewiqjC8FHoCWrJbk4N542wYT3P ksRB6JlnTFtAW9NAP+rW4kyL+mAlJR5Aw5IQbS2DN1d/vN4SFR0FnD3aNMtWJwjUiGft rP9qxg0RI98rbuzAP8hKrocU+ttlj0qBT4E9VB/osbMVHPCbCKMHy2OYByi0kGBe9VOc +s5A== X-Gm-Message-State: AOAM530zYD8fUO+Q1pkvCCR8OKRouou7sK75tmamiYbxlqTGFhJem1h/ ZP8fHRNzQCVc7ZOIL3NYF4kh1FKO8zZp070i93TFffbynV0l X-Google-Smtp-Source: ABdhPJwrtEU1PwKJDwMkynoxse8GDaDxlNH/e4aaSkK3f5Z72MwWHALTn6uAryXSscOV5ZuIi1/gjdhbEGKyVnlXGRdUASMWb0gi MIME-Version: 1.0 X-Received: by 2002:a6b:7c02:: with SMTP id m2mr2790747iok.49.1594875605629; Wed, 15 Jul 2020 22:00:05 -0700 (PDT) Date: Wed, 15 Jul 2020 22:00:05 -0700 In-Reply-To: <00000000000029663005aa23cff4@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000ef406d05aa87e9ba@google.com> Subject: Re: WARNING in submit_bio_checks From: syzbot To: andriin@fb.com, ast@kernel.org, axboe@kernel.dk, bkkarthik@pesu.pes.edu, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, ebiggers@kernel.org, hch@infradead.org, john.fastabend@gmail.com, kafai@fb.com, kpsingh@chromium.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, mcgrof@kernel.org, netdev@vger.kernel.org, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk, yhs@fb.com Content-Type: text/plain; charset="UTF-8" Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org syzbot has bisected this issue to: commit 449325b52b7a6208f65ed67d3484fd7b7184477b Author: Alexei Starovoitov Date: Tue May 22 02:22:29 2018 +0000 umh: introduce fork_usermode_blob() helper bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10fc4b00900000 start commit: 9e50b94b Add linux-next specific files for 20200703 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=12fc4b00900000 console output: https://syzkaller.appspot.com/x/log.txt?x=14fc4b00900000 kernel config: https://syzkaller.appspot.com/x/.config?x=f99cc0faa1476ed6 dashboard link: https://syzkaller.appspot.com/bug?extid=4c50ac32e5b10e4133e1 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1111fb6d100000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1218fa1f100000 Reported-by: syzbot+4c50ac32e5b10e4133e1@syzkaller.appspotmail.com Fixes: 449325b52b7a ("umh: introduce fork_usermode_blob() helper") For information about bisection process see: https://goo.gl/tpsmEJ#bisection