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 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 45945C432C0 for ; Mon, 2 Dec 2019 15:22:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1FED72073C for ; Mon, 2 Dec 2019 15:22:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727417AbfLBPWE (ORCPT ); Mon, 2 Dec 2019 10:22:04 -0500 Received: from mail-io1-f69.google.com ([209.85.166.69]:33962 "EHLO mail-io1-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727432AbfLBPWC (ORCPT ); Mon, 2 Dec 2019 10:22:02 -0500 Received: by mail-io1-f69.google.com with SMTP id a13so26235665iol.1 for ; Mon, 02 Dec 2019 07:22:01 -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=yoaw0PwFg2A6gDglB5LznPWl+Lud/RfolRLMztLbYOM=; b=Xw64YgYBEmr5YuUwrfHh9xP6B9gOdWBIr/KdMlngOPpWfd9poI8GuC5RUaYhN62INy V6IBfbBhEGM3qn4oVX09cTWWsP2v5H5U2m2b5Cmun7siuYSKZBzFOJIuotnx1mj3BnOF HogJ6CNrBJme3Y2v1+dxhkcbYGsKPJrXmCqU0q/tmsUwuQHRTPs7Fr0+DY4kBic6xVtp GEtb0nHplBaYv9i6Q1aEJGqYgHze12XaP7K+PKV31lGtzD7uTGEPQOhJ2dHgh2JskMfA gBEEfXAy3xXg85iGMq5WH6//AUhIZ7GYo9sW69/1eE7XU03dnhcknnkeHZ7e8lmDql3o iMwg== X-Gm-Message-State: APjAAAW5rsCGgQn6oVWUWbyPzEbCEwNI9qg1kRyfgJY+XJG9euwcM8Vx F3eQFp2B9Vv6j5UQRSBJUVqvyV+Mm+XZbCIKSw76mCNq37zx X-Google-Smtp-Source: APXvYqygl3XRg/RBFqVukkdgwZRNVl2uCNOuiX78gKyVxsKxIvwL0CTDPj2IidIQmxtbhRnxA50TBWTRjZbP0m4y1guFs+uD5e2O MIME-Version: 1.0 X-Received: by 2002:a02:962c:: with SMTP id c41mr29142298jai.74.1575300120660; Mon, 02 Dec 2019 07:22:00 -0800 (PST) Date: Mon, 02 Dec 2019 07:22:00 -0800 In-Reply-To: <000000000000da160a0598b2c704@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000001b5b540598ba2498@google.com> Subject: Re: general protection fault in override_creds From: syzbot To: Anna.Schumaker@Netapp.com, Anna.Schumaker@netapp.com, axboe@kernel.dk, casey@schaufler-ca.com, dhowells@redhat.com, dvyukov@google.com, io-uring@vger.kernel.org, jannh@google.com, keescook@chromium.org, kstewart@linuxfoundation.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, neilb@suse.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, 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 181e448d8709e517c9c7b523fcd209f24eb38ca7 Author: Jens Axboe Date: Mon Nov 25 15:52:30 2019 +0000 io_uring: async workers should inherit the user creds bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10424ceae00000 start commit: b94ae8ad Merge tag 'seccomp-v5.5-rc1' of git://git.kernel... git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=12424ceae00000 console output: https://syzkaller.appspot.com/x/log.txt?x=14424ceae00000 kernel config: https://syzkaller.appspot.com/x/.config?x=ff560c3de405258c dashboard link: https://syzkaller.appspot.com/bug?extid=5320383e16029ba057ff syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12dd682ae00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16290abce00000 Reported-by: syzbot+5320383e16029ba057ff@syzkaller.appspotmail.com Fixes: 181e448d8709 ("io_uring: async workers should inherit the user creds") For information about bisection process see: https://goo.gl/tpsmEJ#bisection