takehaya

srv6_bpf.o:	file format ELF64-BPF


Disassembly of section xdp_prog:

0000000000000000 srv6_handler:
; {
       0:	r6 = r1
;     void *data_end = (void *)(long)xdp->data_end;

takehaya

toor@router-01:~$ sudo ./vinbero
2021/01/04 19:20:37 program srv6_handler: load program: permission denied: func#0 @0
btf_vmlinux is malformed
Unrecognized arg#0 type PTR
0: R1=ctx(id=0,off=0,imm=0) R10=fp0
; int srv6_handler(struct xdp_md *xdp)
0: (bf) r6 = r1
1: R1=ctx(id=0,off=0,imm=0) R6_w=ctx(id=0,off=0,imm=0) R10=fp0
; void *data_end = (void *)(long)xdp->data_end;
1: (61) r2 = *(u32 *)(r6 +4)

takehaya

srv6_bpf.o:	file format ELF64-BPF


Disassembly of section xdp_prog:

0000000000000000 srv6_handler:
; {
       0:	r6 = r1
;     void *data_end = (void *)(long)xdp->data_end;

takehaya

2021/01/04 18:43:09 program srv6_handler: load program: permission denied: func#0 @0
btf_vmlinux is malformed
Unrecognized arg#0 type PTR
0: R1=ctx(id=0,off=0,imm=0) R10=fp0
; int srv6_handler(struct xdp_md *xdp)
0: (bf) r6 = r1
1: R1=ctx(id=0,off=0,imm=0) R6_w=ctx(id=0,off=0,imm=0) R10=fp0
; void *data_end = (void *)(long)xdp->data_end;
1: (61) r2 = *(u32 *)(r6 +4)
2: R1=ctx(id=0,off=0,imm=0) R2_w=pkt_end(id=0,off=0,imm=0) R6_w=ctx(id=0,off=0,imm=0) R10=fp0

takehaya

自作パソコンをした

構成

• 【CPU】AMD Ryzen 9 5900X
• 【CPUクーラー】NZXT KRAKEN Z73 RL-KRZ73-01
• 【マザーボード】ASRock X570 Taichi
• 【ビデオカード】MSI GeForce RTX 3070 GAMING X TRIO [PCIExp 8GB]
• 【SSD】WESTERN DIGITAL WD Blue SN550 NVMe WDS100T2B0C
• 【ケース】COOLER MASTER MasterBox TD500 Mesh White MCB-D500D-WGNN-S01
• 【電源】玄人志向 KRPW-GK750W/90+ メモリーは余ってたやつを使った

takehaya

#!/bin/bash

# this network example
# A(.1)  --172.27.1.0/24--  (.2)B(.2)  --172.27.2.0/24-- C(.1)


set -eu

if [[ $(id -u) -ne 0 ]] ; then
    echo "Please run with sudo"

takehaya

thinkpad x1 extreme linux install

これはlinux入れるときにtry without installですら固まるという話があり、それが腹立つのでメモ。

GUIのインストーラーでクッソ固まるときに見るやつ

• https://phst.hateblo.jp/entry/2020/02/12/000000

grab2でのカーネルパラメータを入れる

よくスプラッシュをけせみたいなことが書いてるがそんなことはない。

takehaya

#/bin/zsh
git filter-branch -f --env-filter '
OLD_EMAIL=""
CORRECT_NAME="takehaya"
CORRECT_EMAIL="[email protected]"
if [ "$GIT_COMMITTER_EMAIL" = "$OLD_EMAIL" ]
then
    export GIT_COMMITTER_NAME="$CORRECT_NAME"
    export GIT_COMMITTER_EMAIL="$CORRECT_EMAIL"
fi

takehaya

# -*- mode: ruby -*-
Vagrant.configure("2") do |config|
    # config.vm.box = "bento/ubuntu-19.10"
    config.vm.box = "bento/ubuntu-18.04"
    config.vm.provider "virtualbox" do |vb|
      vb.memory = "4096"
      vb.cpus = 4
    end

    config.vm.synced_folder ".", "/home/vagrant/workspace"

takehaya

#/bin/sh

# install dependencies for building iproute2
sudo apt update
DEBIAN_FRONTEND=noninteractive sudo apt upgrade -y
sudo apt install -y bison flex clang gcc llvm libelf-dev bc libssl-dev tmux trace-cmd

# update iproute2
sudo apt install -y pkg-config bison flex make gcc
cd /tmp