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https://gitee.com/bianbu-linux/linux-6.6
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d2284d6825
Add selftests for nested_strust to check whehter PTR_UNTRUSTED is cleared as expected, the result as follows: #141/1 nested_trust/test_read_cpumask:OK #141/2 nested_trust/test_skb_field:OK <<<< #141/3 nested_trust/test_invalid_nested_user_cpus:OK #141/4 nested_trust/test_invalid_nested_offset:OK #141/5 nested_trust/test_invalid_skb_field:OK <<<< #141 nested_trust:OK The #141/2 and #141/5 are newly added. Signed-off-by: Yafang Shao <laoar.shao@gmail.com> Link: https://lore.kernel.org/r/20230713025642.27477-3-laoar.shao@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
34 lines
775 B
C
34 lines
775 B
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2023 Meta Platforms, Inc. and affiliates. */
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#include <vmlinux.h>
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#include <bpf/bpf_tracing.h>
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#include <bpf/bpf_helpers.h>
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#include "bpf_misc.h"
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#include "nested_trust_common.h"
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char _license[] SEC("license") = "GPL";
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struct {
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__uint(type, BPF_MAP_TYPE_SK_STORAGE);
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__uint(map_flags, BPF_F_NO_PREALLOC);
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__type(key, int);
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__type(value, u64);
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} sk_storage_map SEC(".maps");
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SEC("tp_btf/task_newtask")
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__success
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int BPF_PROG(test_read_cpumask, struct task_struct *task, u64 clone_flags)
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{
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bpf_cpumask_test_cpu(0, task->cpus_ptr);
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return 0;
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}
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SEC("tp_btf/tcp_probe")
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__success
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int BPF_PROG(test_skb_field, struct sock *sk, struct sk_buff *skb)
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{
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bpf_sk_storage_get(&sk_storage_map, skb->sk, 0, 0);
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return 0;
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}
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