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=-0.4 required=3.0 tests=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 B8E18C43215 for ; Wed, 13 Nov 2019 19:29:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 236BA206D7 for ; Wed, 13 Nov 2019 19:29:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727241AbfKMT3D (ORCPT ); Wed, 13 Nov 2019 14:29:03 -0500 Received: from mail-il1-f200.google.com ([209.85.166.200]:56664 "EHLO mail-il1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727238AbfKMT3D (ORCPT ); Wed, 13 Nov 2019 14:29:03 -0500 Received: by mail-il1-f200.google.com with SMTP id e5so2727442ile.23 for ; Wed, 13 Nov 2019 11:29:01 -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=Vq9AmQFAWjANpkLSXn1UHJxF9GMEPoT07hbuuO8TH2k=; b=Wp9f3oko9LDAavgQ6pqyKL+Ih2g6krjI7ZiWNPtokYcIPQYCaLX1z6KKY37quRNdbR H2d3SFNXuWmBABot8rgmIXOxzF9sqSz3yjeFmaJ/I5lhUieIvq/edddBDvsiQSNo2+ml bXdodFedc0uYcoW8nfT/dL2umvhLEwpSMK5SR+zrb74Zb1aFJMT8q4bvoH2h9vC2661Y vOXGtyoMZanpXC3Z0wLL+HaJ9InOdfNPDYbos2rwNuEjWFBmWnF7aAAJQ32OksSwFmOU ylRdVj5esBocYTw4L822QBJLixf2/I5IHLyMCu1V6WeSM3iAINyR1i7nIfMDeJ6MmJr8 qHeA== X-Gm-Message-State: APjAAAVDiTu+ajSPj5lWJYQcx/lq+RrqQH7ZP75bWJv1hW+U0g01XNpb GnLOjyVOEXs/PrzR4iwXN0GRIuP6DmNe+qwiPBumtmu/npDx X-Google-Smtp-Source: APXvYqxYJ6dFAWRGXWIFkalwkp6O7/N3QafXX2n/eN0sV1s7imfVqRwzdni678vR3BjKeJq+wc64m4DR6PP6wl4S1UDWQ9YBHiIf MIME-Version: 1.0 X-Received: by 2002:a02:58c8:: with SMTP id f191mr4260216jab.94.1573673340590; Wed, 13 Nov 2019 11:29:00 -0800 (PST) Date: Wed, 13 Nov 2019 11:29:00 -0800 In-Reply-To: <000000000000af7e9805973c6356@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000075646805973f60b5@google.com> Subject: Re: general protection fault in io_commit_cqring From: syzbot To: axboe@kernel.dk, io-uring@vger.kernel.org, linux-block@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"; format=flowed; delsp=yes Sender: io-uring-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org syzbot has bisected this bug to: commit 1d7bb1d50fb4dc141c7431cc21fdd24ffcc83c76 Author: Jens Axboe Date: Wed Nov 6 18:31:17 2019 +0000 io_uring: add support for backlogged CQ ring bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16a49802e00000 start commit: 4e8f108c Add linux-next specific files for 20191113 git tree: linux-next final crash: https://syzkaller.appspot.com/x/report.txt?x=15a49802e00000 console output: https://syzkaller.appspot.com/x/log.txt?x=11a49802e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=ace1bcdd76242fd2 dashboard link: https://syzkaller.appspot.com/bug?extid=21147d79607d724bd6f3 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1649e706e00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11397f72e00000 Reported-by: syzbot+21147d79607d724bd6f3@syzkaller.appspotmail.com Fixes: 1d7bb1d50fb4 ("io_uring: add support for backlogged CQ ring") For information about bisection process see: https://goo.gl/tpsmEJ#bisection