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=-9.0 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 403FCC433E1 for ; Mon, 10 Aug 2020 16:04:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 24C122078E for ; Mon, 10 Aug 2020 16:04:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726338AbgHJQEH (ORCPT ); Mon, 10 Aug 2020 12:04:07 -0400 Received: from mail-io1-f70.google.com ([209.85.166.70]:38203 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726406AbgHJQEG (ORCPT ); Mon, 10 Aug 2020 12:04:06 -0400 Received: by mail-io1-f70.google.com with SMTP id e73so1533759iof.5 for ; Mon, 10 Aug 2020 09:04:05 -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=JYunBAF0CO9I6T7+mCBUdOib7oLhSaU/1OgyuSzfO5o=; b=JUwYQXSGi89NcqPYhGldduulGcim/pDYlFOQL+jNnoNf+zyO9ZLMRyr7DnLQuryjHW zibxdEw30kgyWpD04goqAnVe5iGntUqg88rR8X5l2TBVtU4eRq6kHEAn0z43qcTVY7KD bXCXx3a/5jh9HP8iWSSXVczQAIWWQOGF/l4cYMTZe+mgaZTuTQBLvClIHu9NW4z5dxiK Z+nqRkVXc3ECQZ4z8O4Q3z2P/0LFJtuUFh3A4rMX29n8VXB/d1vTEO02EVvWbCxOqm9h WhrJCtxbFZPgufn/c5DYV6839JR49P3BoYKpgnmsfbWcLrUhW03dop1LvsiUjMao4eV+ s4cw== X-Gm-Message-State: AOAM533kLHZn6YodsUyOXmoJuLkpggnVraBkNOfmhyVrSR47LsuR1Y4/ yLkyMnayLDGIcpLu0wly4dbEpy6Fx+j1dMJqiU+ffeqp60ZV X-Google-Smtp-Source: ABdhPJypEi0fFwm9FfdzOt9VyXzPHxfS3H30esVuwqWhNkdWmk6zkV7Hh5f843JOksGNlCV4c68qEFWIGDUNpN78VlBwMuSaIAFL MIME-Version: 1.0 X-Received: by 2002:a05:6e02:546:: with SMTP id i6mr2505029ils.143.1597075445337; Mon, 10 Aug 2020 09:04:05 -0700 (PDT) Date: Mon, 10 Aug 2020 09:04:05 -0700 In-Reply-To: <000000000000391eaf05ac87b74d@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000099566305ac881a16@google.com> Subject: Re: INFO: task hung in io_uring_flush From: syzbot To: axboe@kernel.dk, io-uring@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8" Sender: io-uring-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org syzbot has bisected this issue to: commit f86cd20c9454847a524ddbdcdec32c0380ed7c9b Author: Jens Axboe Date: Wed Jan 29 20:46:44 2020 +0000 io_uring: fix linked command file table usage bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16db4d3a900000 start commit: 9420f1ce Merge tag 'pinctrl-v5.9-1' of git://git.kernel.or.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=15db4d3a900000 console output: https://syzkaller.appspot.com/x/log.txt?x=11db4d3a900000 kernel config: https://syzkaller.appspot.com/x/.config?x=72cf85e4237850c8 dashboard link: https://syzkaller.appspot.com/bug?extid=6338dcebf269a590b668 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=141dde52900000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15b196aa900000 Reported-by: syzbot+6338dcebf269a590b668@syzkaller.appspotmail.com Fixes: f86cd20c9454 ("io_uring: fix linked command file table usage") For information about bisection process see: https://goo.gl/tpsmEJ#bisection