cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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test_log_buf.c (407B)

      1// SPDX-License-Identifier: GPL-2.0
      2/* Copyright (c) 2021 Facebook */
      3
      4#include <linux/bpf.h>
      5#include <bpf/bpf_helpers.h>
      6
      7int a[4];
      8const volatile int off = 4000;
      9
     10SEC("raw_tp/sys_enter")
     11int good_prog(const void *ctx)
     12{
     13	a[0] = (int)(long)ctx;
     14	return a[1];
     15}
     16
     17SEC("raw_tp/sys_enter")
     18int bad_prog(const void *ctx)
     19{
     20	/* out of bounds access */
     21	return a[off];
     22}
     23
     24char _license[] SEC("license") = "GPL";