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1// SPDX-License-Identifier: GPL-2.02/* Copyright (c) 2023 Meta Platforms, Inc. and affiliates. */3 4#include <vmlinux.h>5#include <bpf/bpf_tracing.h>6#include <bpf/bpf_helpers.h>7#include "bpf_misc.h"8 9#include "nested_trust_common.h"10 11char _license[] SEC("license") = "GPL";12 13struct {14 __uint(type, BPF_MAP_TYPE_SK_STORAGE);15 __uint(map_flags, BPF_F_NO_PREALLOC);16 __type(key, int);17 __type(value, u64);18} sk_storage_map SEC(".maps");19 20/* Prototype for all of the program trace events below:21 *22 * TRACE_EVENT(task_newtask,23 * TP_PROTO(struct task_struct *p, u64 clone_flags)24 */25 26SEC("tp_btf/task_newtask")27__failure __msg("R2 must be")28int BPF_PROG(test_invalid_nested_user_cpus, struct task_struct *task, u64 clone_flags)29{30 bpf_cpumask_test_cpu(0, task->user_cpus_ptr);31 return 0;32}33 34/* Although R2 is of type sk_buff but sock_common is expected, we will hit untrusted ptr first. */35SEC("tp_btf/tcp_probe")36__failure __msg("R2 type=untrusted_ptr_ expected=ptr_, trusted_ptr_, rcu_ptr_")37int BPF_PROG(test_invalid_skb_field, struct sock *sk, struct sk_buff *skb)38{39 bpf_sk_storage_get(&sk_storage_map, skb->next, 0, 0);40 return 0;41}42