tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3
4SRC_TREE=../../../../
5
6test_run()
7{
8 sysctl -w net.core.bpf_jit_enable=$1 2>&1 > /dev/null
9 sysctl -w net.core.bpf_jit_harden=$2 2>&1 > /dev/null
10
11 echo "[ JIT enabled:$1 hardened:$2 ]"
12 dmesg -C
13 if [ -f ${SRC_TREE}/lib/test_bpf.ko ]; then
14 insmod ${SRC_TREE}/lib/test_bpf.ko 2> /dev/null
15 if [ $? -ne 0 ]; then
16 rc=1
17 fi
18 else
19 # Use modprobe dry run to check for missing test_bpf module
20 if ! /sbin/modprobe -q -n test_bpf; then
21 echo "test_bpf: [SKIP]"
22 elif /sbin/modprobe -q test_bpf; then
23 echo "test_bpf: ok"
24 else
25 echo "test_bpf: [FAIL]"
26 rc=1
27 fi
28 fi
29 rmmod test_bpf 2> /dev/null
30 dmesg | grep FAIL
31}
32
33test_save()
34{
35 JE=`sysctl -n net.core.bpf_jit_enable`
36 JH=`sysctl -n net.core.bpf_jit_harden`
37}
38
39test_restore()
40{
41 sysctl -w net.core.bpf_jit_enable=$JE 2>&1 > /dev/null
42 sysctl -w net.core.bpf_jit_harden=$JH 2>&1 > /dev/null
43}
44
45rc=0
46test_save
47test_run 0 0
48test_run 1 0
49test_run 1 1
50test_run 1 2
51test_restore
52exit $rc