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=-0.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,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 82243C4360F for ; Wed, 3 Apr 2019 01:12:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5B80720830 for ; Wed, 3 Apr 2019 01:12:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726711AbfDCBMC (ORCPT ); Tue, 2 Apr 2019 21:12:02 -0400 Received: from mail-io1-f71.google.com ([209.85.166.71]:34969 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726607AbfDCBMB (ORCPT ); Tue, 2 Apr 2019 21:12:01 -0400 Received: by mail-io1-f71.google.com with SMTP id k2so12513794ioj.2 for ; Tue, 02 Apr 2019 18:12:01 -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=FCwTOgxmFo0oDnVVeiPUacD8o954VtUYEUxjzO+xRdQ=; b=Piq3KtAMrvzje6fsIs2pNHkQNneFEEoh6sKYjLGaHvAlxW6t62kR5YezhFYbw4Ptfh J3zwt/x26vK+LDJUVzvPk7FqSor1bnpOSmkTI5GtSYIWGQoQY8sz+E82AtufymiwLDAH d+1ziMN8lNd1dKAbKOR3dLvF+TswNfnPIO/SkvjJpsLuiSfFIdY33bMUWLh0KUev3HB4 JTysvxaQTHhPCHiEMyhqhovdb2zQ7w09owxhoANTvKEST/lPxrwQuxPFvzeGqzF7OlA9 LZcK5podjJPVH78RuGKC3kNYaDPC81iF8ZOeQQ+3gR2dTxa9Sf/BmEIHRWJNvJCHzRHY DP/Q== X-Gm-Message-State: APjAAAWGGhNIh1bLf7dPuzR3C7J0FVrKAm0oQ7+kaN+N9/Pr2h7Q/hQu d0te5VPynRw9Pcne1icoah1GjbX0PYAt4HIg3dooJUCStG0J X-Google-Smtp-Source: APXvYqyEYEQc//7zZL4I714pLlYM3XCXZ2FL5XBSds3ESVs+UJrU1EpRdxctocNVsnf9ftQ/f4rh+DY/lqoe1ED2uQoE08Vp3VwD MIME-Version: 1.0 X-Received: by 2002:a6b:ec0d:: with SMTP id c13mr1625952ioh.23.1554253921072; Tue, 02 Apr 2019 18:12:01 -0700 (PDT) Date: Tue, 02 Apr 2019 18:12:01 -0700 In-Reply-To: <000000000000e02450058593df62@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000db3c59058595f0ac@google.com> Subject: Re: BUG: using __this_cpu_read() in preemptible code in ip6_finish_output From: syzbot To: alexander.h.duyck@intel.com, amritha.nambiar@intel.com, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, ecree@solarflare.com, fw@strlen.de, idosch@mellanox.com, jiri@mellanox.com, kafai@fb.com, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, lirongqing@baidu.com, netdev@vger.kernel.org, petrm@mellanox.com, sd@queasysnail.net, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, yhs@fb.com, yoshfuji@linux-ipv6.org Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org syzbot has bisected this bug to: commit 97cdcf37b57e3f204be3000b9eab9686f38b4356 Author: Florian Westphal Date: Mon Apr 1 14:42:13 2019 +0000 net: place xmit recursion in softnet data bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11c04b0f200000 start commit: e1427237 macsec: add noinline tag to avoid a frame size wa.. git tree: net-next final crash: https://syzkaller.appspot.com/x/report.txt?x=13c04b0f200000 console output: https://syzkaller.appspot.com/x/log.txt?x=15c04b0f200000 kernel config: https://syzkaller.appspot.com/x/.config?x=8e9bc94c16d346a6 dashboard link: https://syzkaller.appspot.com/bug?extid=51471b4aae195285a4a3 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=156ffb07200000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14412673200000 Reported-by: syzbot+51471b4aae195285a4a3@syzkaller.appspotmail.com Fixes: 97cdcf37b57e ("net: place xmit recursion in softnet data") For information about bisection process see: https://goo.gl/tpsmEJ#bisection