LXR linux/tools/testing/selftests/bpf/progs/test_snprintf

   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";
  21