cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

test_snprintf_single.c (414B)

      1// SPDX-License-Identifier: GPL-2.0
      2/* Copyright (c) 2021 Google LLC. */
      3
      4#include <linux/bpf.h>
      5#include <bpf/bpf_helpers.h>
      6
      7/* The format string is filled from the userspace such that loading fails */
      8const char fmt[10];
      9
     10SEC("raw_tp/sys_enter")
     11int handler(const void *ctx)
     12{
     13	unsigned long long arg = 42;
     14
     15	bpf_snprintf(NULL, 0, fmt, &arg, sizeof(arg));
     16
     17	return 0;
     18}
     19
     20char _license[] SEC("license") = "GPL";