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 */ 8 const char fmt[10]; 9 10 SEC("raw_tp/sys_enter") 11 int 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 20 char _license[] SEC("license") = "GPL"; 21