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=-5.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 EDC1DC432C0 for ; Mon, 18 Nov 2019 02:14:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CCAAE206B6 for ; Mon, 18 Nov 2019 02:14:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726464AbfKRCOC (ORCPT ); Sun, 17 Nov 2019 21:14:02 -0500 Received: from mail-il1-f198.google.com ([209.85.166.198]:46204 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726316AbfKRCOC (ORCPT ); Sun, 17 Nov 2019 21:14:02 -0500 Received: by mail-il1-f198.google.com with SMTP id i74so15065088ild.13 for ; Sun, 17 Nov 2019 18:14:01 -0800 (PST) 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=0hJK8rPWOFUddMB0lJimGQDZPQJFXDrAgb0buhY0TvU=; b=DiDh5/YbTnZ0yaPsiMRC1v6sPcBkSYzjW6THiOGzso6VPeoypYd028EQehMXbV0QEO EXQTCgndkkNqDABgDHTQW7S0H1ALCWze1GIPKRjzjbGtqVCkWEN2ruwVoeufs1/LHDzY 8AKjl8WTp0zw0j/K9ijnj3dA+ITj3oztprYE9D3PbWjM1oDyUMIY4r43H7OFOkDPem/M 1el2hz/ankMgz7eYNK52ye2qYsk6Pw6SFHODmcpAniQoo6bOqQ/mUBMj8Ja/HlOiUAZi hnPnwnpPtiIv+ZpZSTn3KavyNTjeS1DFktJwE5NqDVbstz3XU5KyRTvjVq0C3zsf2kaR NkEg== X-Gm-Message-State: APjAAAVa2XUwcM7i9D5m9qZxdDOMitzsm0jjZeYyAOCbfzg+TyhpQ6ml hNpX0aHC8zYoGEqgknXxF7DThptQb7h26MPJJ2h/RxSFh2Pz X-Google-Smtp-Source: APXvYqwZhRrNpOcp3K1jSna3NVMQ3Y9eKDGXT7VjA9/ZYXXiCNJMlXd57obKMz7tPT7gqZ5PakMzS/X78yIoSTTNHjwPUi2z8UDS MIME-Version: 1.0 X-Received: by 2002:a92:660e:: with SMTP id a14mr13677440ilc.235.1574043241343; Sun, 17 Nov 2019 18:14:01 -0800 (PST) Date: Sun, 17 Nov 2019 18:14:01 -0800 In-Reply-To: <00000000000044cbf80576baaecd@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000042f41905979580cc@google.com> Subject: Re: possible deadlock in path_openat From: syzbot To: amir73il@gmail.com, ast@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-unionfs@vger.kernel.org, miklos@szeredi.hu, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this bug to: commit 8e54cadab447dae779f80f79c87cbeaea9594f60 Author: Al Viro Date: Sun Nov 27 01:05:42 2016 +0000 fix default_file_splice_read() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=108f4416e00000 start commit: 6d906f99 Merge tag 'arm64-fixes' of git://git.kernel.org/p.. git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=128f4416e00000 console output: https://syzkaller.appspot.com/x/log.txt?x=148f4416e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=856fc6d0fbbeede9 dashboard link: https://syzkaller.appspot.com/bug?extid=a55ccfc8a853d3cff213 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=101767b7200000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13c15013200000 Reported-by: syzbot+a55ccfc8a853d3cff213@syzkaller.appspotmail.com Fixes: 8e54cadab447 ("fix default_file_splice_read()") For information about bisection process see: https://goo.gl/tpsmEJ#bisection