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=-8.7 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=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 18FC7C433E9 for ; Sat, 20 Feb 2021 14:26:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CB68164EE1 for ; Sat, 20 Feb 2021 14:26:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229802AbhBTOZw (ORCPT ); Sat, 20 Feb 2021 09:25:52 -0500 Received: from mail-io1-f71.google.com ([209.85.166.71]:57076 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229490AbhBTOZv (ORCPT ); Sat, 20 Feb 2021 09:25:51 -0500 Received: by mail-io1-f71.google.com with SMTP id e12so5967327ioc.23 for ; Sat, 20 Feb 2021 06:25:35 -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=a91c5n0ii9aP4HgGhtETSQKNnFL6/0EJudj3NNorr2s=; b=T/cfPaA62I4tIuRvknufWyYlqCPvOONEEwz7B6pEqjsJoc6DshDA87N14fINr1smTs 1skq0Al5ByaUWjpSY/8coGvBg+3R/oqPkr5cXGl/CBk8+GG7WxghrMciUQmk0NqM/jcT 9f9tunE4PlMaiLI4xYhysi4JXOEsodc6EQenI7EKrpmk4GKI+2ty5UNYOoDZlgOzqDe2 Hmtsfhi6MhZDrbG2iUzhEJQXyq/PSGxk9QtVDIA77EvSN1RqIFZJdf9DimWzHO9NphFR ydB2l5ox1Rx51ZT9kjxRGRkwVDr3YPwhVdAGwlZP+3qPrlifWaz04Bw/Mn4NGoTY0uK+ VGYQ== X-Gm-Message-State: AOAM530+VnvHMgkMGOuEcxunbaR+nngaZ1hNSRXToKF4Y1K0nCe4Q3j2 Ey6ex6R2atMMIpK7ChfTwdBQFRpvrJcvisXbXDh8Yog8aKHl X-Google-Smtp-Source: ABdhPJzz69vvOCX7SlZs7Bo/yLxkFUPjMwgpwbS5nX6FYFVGDvIQKzX7XItkxnV3ANQ5J6ZDJomv1AjEFTW3v8kMnhJqI7gu0FpH MIME-Version: 1.0 X-Received: by 2002:a6b:8b83:: with SMTP id n125mr1787866iod.35.1613831110168; Sat, 20 Feb 2021 06:25:10 -0800 (PST) Date: Sat, 20 Feb 2021 06:25:10 -0800 In-Reply-To: <0000000000001fb73f05bb767334@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000000ca18b05bbc556d6@google.com> Subject: Re: WARNING in iov_iter_revert (2) From: syzbot To: gregkh@linuxfoundation.org, jirislaby@kernel.org, linux-kernel@vger.kernel.org, snovitoll@gmail.com, syzkaller-bugs@googlegroups.com, torvalds@linux-foundation.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this issue to: commit 9bb48c82aced07698a2d08ee0f1475a6c4f6b266 Author: Linus Torvalds Date: Tue Jan 19 19:41:16 2021 +0000 tty: implement write_iter bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1009a9f2d00000 start commit: dcc0b490 Merge tag 'powerpc-5.11-8' of git://git.kernel.or.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=1209a9f2d00000 console output: https://syzkaller.appspot.com/x/log.txt?x=1409a9f2d00000 kernel config: https://syzkaller.appspot.com/x/.config?x=1106b4b91e8dfab8 dashboard link: https://syzkaller.appspot.com/bug?extid=3d2c27c2b7dc2a94814d syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1346ac60d00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=123eae4cd00000 Reported-by: syzbot+3d2c27c2b7dc2a94814d@syzkaller.appspotmail.com Fixes: 9bb48c82aced ("tty: implement write_iter") For information about bisection process see: https://goo.gl/tpsmEJ#bisection