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=-11.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,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 EDABCC433E6 for ; Wed, 13 Jan 2021 19:42:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9B0A923343 for ; Wed, 13 Jan 2021 19:42:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728731AbhAMTmU (ORCPT ); Wed, 13 Jan 2021 14:42:20 -0500 Received: from mail.kernel.org ([198.145.29.99]:57298 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725997AbhAMTmU (ORCPT ); Wed, 13 Jan 2021 14:42:20 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 039932333E; Wed, 13 Jan 2021 19:41:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1610566899; bh=sy/xsRZ83xiC/bL9POsUHJU6O60B9nJN8f53pZkC3j8=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=RQdescFN6Al7JIrl0cC169kus1nRHAeqjjMcihWqKyhOWe4FcMcybEL3KBfpOW5pa VuOyQ5ZppPqNZ8h70TT6bU8T7WBlw8QAf5Zg9ZDXPcTFvtYYV6KhULWxmUPkDuUC2M EfZ6wPGrpg9p/asXLv+urJirjTQ+4yYzHGuu8G3JJVJAOWW9mXm7V0BIu2r4OROB9w XODONcNKfBzaeI8Ugj70p8V5ueAxUAdL1nkoLcdOXs3P55lRTQ74npAjWLcJjEYMNe aBxfb8t5t1ppTgMD+/wjICmWggCc2mfHDKIWFSJBEOe/sgxHCIsE9/1dILR1JKhTDV EaRIfboOn0bvg== Date: Wed, 13 Jan 2021 11:41:36 -0800 From: Jakub Kicinski To: syzbot Cc: andrii@kernel.org, andriin@fb.com, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, edumazet@google.com, f.fainelli@gmail.com, hawk@kernel.org, john.fastabend@gmail.com, kafai@fb.com, kpsingh@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, roopa@cumulusnetworks.com, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, yhs@fb.com Subject: Re: kernel BUG at net/core/dev.c:NUM! Message-ID: <20210113114136.4b23f753@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com> In-Reply-To: <000000000000f9191905b8c59562@google.com> References: <000000000000f9191905b8c59562@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Wed, 13 Jan 2021 02:27:27 -0800 syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: c49243e8 Merge branch 'net-fix-issues-around-register_netd.. > git tree: net > console output: https://syzkaller.appspot.com/x/log.txt?x=11da7ba8d00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=bacfc914704718d3 > dashboard link: https://syzkaller.appspot.com/bug?extid=2393580080a2da190f04 > compiler: gcc (GCC) 10.1.0-syz 20200507 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13704c3f500000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=160cc357500000 #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/kuba/linux.git sit-fix