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 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 BC568C433C1 for ; Mon, 29 Mar 2021 11:28:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 856F46193A for ; Mon, 29 Mar 2021 11:28:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231796AbhC2L2K (ORCPT ); Mon, 29 Mar 2021 07:28:10 -0400 Received: from mail-io1-f69.google.com ([209.85.166.69]:56007 "EHLO mail-io1-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231620AbhC2L2I (ORCPT ); Mon, 29 Mar 2021 07:28:08 -0400 Received: by mail-io1-f69.google.com with SMTP id e15so10582864ioe.22 for ; Mon, 29 Mar 2021 04:28:07 -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=rQvHuQoW7fvtp2Ftp9kpJnXrU1a0vQLohh1FTEc0jDU=; b=EjqMjm2YogwZnGfxYQ8yZG8M8ehSWOQUvVb65zdc1hJo7k4klp/i85IQHUpCMMxC6W ETz6xCA8axaD+lAXyDamU1axondFw02q2LhqmLhCUGHqLCepjG0b79lrSNQop15o4EyS 9FUtHrsHTlXBSr4axOBDdYyzaLB336YQdSby7S14HwczudbYVV43GAnV4ZqX/hanmvcN ODdhyDq4ce7wrchctSggN1X5/zFGKWFRWShEJnCesbzAHQL/9SbEKxZ35BzeYGqAlBdd n4+bN34B3gvusEBmYTc1MNSeyaKBsleeTKTunhEDz1VB8jVgXsrNzS3s6v0RN/ZsYU9t zJNQ== X-Gm-Message-State: AOAM531sAHX1D5xC/TW93j/ckeffLY7xp8q6wKBGDUHTgKqCCFCI0u1x rThnLNcU1x78e893gBk0OxDGumAAYzqUQ19QyKxDjVT378mz X-Google-Smtp-Source: ABdhPJyVGPg1iqr/7NbcMuFQoOzNXIrVaBElCoeGpE0yyT3Q1rRFN8O0BxysKrgcUI8F0NUDr3gsxqYBJV5vkbJE8UoNcZEn92PU MIME-Version: 1.0 X-Received: by 2002:a05:6638:381c:: with SMTP id i28mr22892618jav.60.1617017285612; Mon, 29 Mar 2021 04:28:05 -0700 (PDT) Date: Mon, 29 Mar 2021 04:28:05 -0700 In-Reply-To: <000000000000cefea605bea7e8c3@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e7989c05beab2c46@google.com> Subject: Re: [syzbot] general protection fault in io_commit_cqring (2) From: syzbot To: alobakin@pm.me, asml.silence@gmail.com, axboe@kernel.dk, davem@davemloft.net, gnault@redhat.com, gregkh@linuxfoundation.org, io-uring@vger.kernel.org, kuba@kernel.org, linmiaohe@huawei.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, rafael@kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org syzbot has bisected this issue to: commit f9d6725bf44a5b9412b5da07e3467100fe2af236 Author: Alexander Lobakin Date: Sat Feb 13 14:11:50 2021 +0000 skbuff: use __build_skb_around() in __alloc_skb() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11934b3ad00000 start commit: 81b1d39f Merge tag '5.12-rc4-smb3' of git://git.samba.org/.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=13934b3ad00000 console output: https://syzkaller.appspot.com/x/log.txt?x=15934b3ad00000 kernel config: https://syzkaller.appspot.com/x/.config?x=daeff30c2474a60f dashboard link: https://syzkaller.appspot.com/bug?extid=0e905eb8228070c457a0 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10e0ed06d00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1144754ed00000 Reported-by: syzbot+0e905eb8228070c457a0@syzkaller.appspotmail.com Fixes: f9d6725bf44a ("skbuff: use __build_skb_around() in __alloc_skb()") For information about bisection process see: https://goo.gl/tpsmEJ#bisection