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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B70A7C433F5 for ; Sat, 12 Feb 2022 03:25:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231192AbiBLDYT (ORCPT ); Fri, 11 Feb 2022 22:24:19 -0500 Received: from gmail-smtp-in.l.google.com ([23.128.96.19]:48014 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229541AbiBLDYS (ORCPT ); Fri, 11 Feb 2022 22:24:18 -0500 Received: from mail-io1-f71.google.com (mail-io1-f71.google.com [209.85.166.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EE0862CC97 for ; Fri, 11 Feb 2022 19:24:15 -0800 (PST) Received: by mail-io1-f71.google.com with SMTP id y124-20020a6bc882000000b0060fbfe14d03so7750345iof.2 for ; Fri, 11 Feb 2022 19:24:15 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=HIaZdliGeUGHxPX/pnldMtfHMd66z97/0dotF/EKdqA=; b=a4gCzg3JnZPOEBllanKVspWGhnLrMX2XsZ8gh5tNAqLQAevh4f7feBGvxJm0gNoVKw gd3BrlCq21JqfcpLap4AvYxTCbiNBpXpifJEC5NEf+L5nXpYBuVRz2xhYxAVs4n3/zVu Gxvhp03t/p1K5jfWeNwzU/dDA/vDOjRYYU3Iri+J/2YNxp8gmwrTd53WQSXY94VDf6/F 7/4c/vTZ9c+l293as8mC51Gt/zr6YmPsho8ZGeKTYQwD8+r1ja/CZF4e6moi+iEFaPeG ZqL7O3cPx2RVOdBPyURkaviPW0I1wadlIihrnrMyQlkoY/eSnIGd5Tqj4XhmJnCH/xzB Vafg== X-Gm-Message-State: AOAM531Q657cdWHcQvFhuVNg+xvK3FkMl6pb2t8pKD15ZyXds64bXvHg H9hOCN+MJ/2qUiCJq9ipJMShsJFJLdtJSdn6h/9/t/h3z7x+ X-Google-Smtp-Source: ABdhPJxCfK7Iy7cDY5K320ofBfU6awjoOFIusgr1bupoMTBw316F8wBt29XqX3iJC5RJtJdQr8Xai18AjbafKuofTwhgsZBaceQV MIME-Version: 1.0 X-Received: by 2002:a05:6e02:160a:: with SMTP id t10mr2564156ilu.65.1644636255275; Fri, 11 Feb 2022 19:24:15 -0800 (PST) Date: Fri, 11 Feb 2022 19:24:15 -0800 In-Reply-To: <000000000000c560bd05ad3c5187@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c7d07705d7c9b7a4@google.com> Subject: Re: [syzbot] WARNING in rtnl_dellink From: syzbot To: andriin@fb.com, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, edumazet@google.com, fw@strlen.de, harshit.m.mogalapalli@oracle.com, hawk@kernel.org, jiri@mellanox.com, john.fastabend@gmail.com, kafai@fb.com, kpsingh@chromium.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, roopa@cumulusnetworks.com, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, yajun.deng@linux.dev, yhs@fb.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot suspects this issue was fixed by commit: commit f123cffdd8fe8ea6c7fded4b88516a42798797d0 Author: Harshit Mogalapalli Date: Mon Nov 29 17:53:27 2021 +0000 net: netlink: af_netlink: Prevent empty skb by adding a check on len. bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=107b5472700000 start commit: cd02217a5d81 Merge tag 'for-linus' of git://git.kernel.org.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=a0437fdd630bee11 dashboard link: https://syzkaller.appspot.com/bug?extid=b3b5c64f4880403edd36 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=116f8172900000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1145d1b1900000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: net: netlink: af_netlink: Prevent empty skb by adding a check on len. For information about bisection process see: https://goo.gl/tpsmEJ#bisection