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0001 // SPDX-License-Identifier: GPL-2.0 0002 /* Copyright (c) 2021 Facebook */ 0003 0004 #include <linux/bpf.h> 0005 #include <bpf/bpf_helpers.h> 0006 0007 int a[4]; 0008 const volatile int off = 4000; 0009 0010 SEC("raw_tp/sys_enter") 0011 int good_prog(const void *ctx) 0012 { 0013 a[0] = (int)(long)ctx; 0014 return a[1]; 0015 } 0016 0017 SEC("raw_tp/sys_enter") 0018 int bad_prog(const void *ctx) 0019 { 0020 /* out of bounds access */ 0021 return a[off]; 0022 } 0023 0024 char _license[] SEC("license") = "GPL";
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