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https://gitee.com/bianbu-linux/linux-6.6
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1cd0e7715c
Add a new selftest to check the PTR_UNTRUSTED condition. Below is the result, #160 ptr_untrusted:OK Signed-off-by: Yafang Shao <laoar.shao@gmail.com> Link: https://lore.kernel.org/r/20230713025642.27477-5-laoar.shao@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
29 lines
549 B
C
29 lines
549 B
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (C) 2023 Yafang Shao <laoar.shao@gmail.com> */
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#include "vmlinux.h"
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#include <bpf/bpf_tracing.h>
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char tp_name[128];
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SEC("lsm/bpf")
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int BPF_PROG(lsm_run, int cmd, union bpf_attr *attr, unsigned int size)
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{
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switch (cmd) {
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case BPF_RAW_TRACEPOINT_OPEN:
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bpf_probe_read_user_str(tp_name, sizeof(tp_name) - 1,
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(void *)attr->raw_tracepoint.name);
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break;
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default:
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break;
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}
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return 0;
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}
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SEC("raw_tracepoint")
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int BPF_PROG(raw_tp_run)
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{
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return 0;
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}
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char _license[] SEC("license") = "GPL";
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