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5aa5bd14c5
Add a start of a test suite for kernel selftests. This moves test_verifier and test_maps over to tools/testing/selftests/bpf/ along with various code improvements and also adds a script for invoking test_bpf module. The test suite can simply be run via selftest framework, f.e.: # cd tools/testing/selftests/bpf/ # make # make run_tests Both test_verifier and test_maps were kind of misplaced in samples/bpf/ directory and we were looking into adding them to selftests for a while now, so it can be picked up by kbuild bot et al and hopefully also get more exposure and thus new test case additions. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2765 lines
79 KiB
C
2765 lines
79 KiB
C
/*
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* Testsuite for eBPF verifier
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*
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* Copyright (c) 2014 PLUMgrid, http://plumgrid.com
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#include <stddef.h>
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#include <stdbool.h>
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#include <sched.h>
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#include <sys/resource.h>
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#include <linux/unistd.h>
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#include <linux/filter.h>
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#include <linux/bpf_perf_event.h>
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#include <linux/bpf.h>
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#include "../../../include/linux/filter.h"
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#include "bpf_sys.h"
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#ifndef ARRAY_SIZE
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# define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
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#endif
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#define MAX_INSNS 512
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#define MAX_FIXUPS 8
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struct bpf_test {
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const char *descr;
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struct bpf_insn insns[MAX_INSNS];
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int fixup_map1[MAX_FIXUPS];
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int fixup_map2[MAX_FIXUPS];
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int fixup_prog[MAX_FIXUPS];
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const char *errstr;
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const char *errstr_unpriv;
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enum {
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UNDEF,
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ACCEPT,
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REJECT
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} result, result_unpriv;
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enum bpf_prog_type prog_type;
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};
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/* Note we want this to be 64 bit aligned so that the end of our array is
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* actually the end of the structure.
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*/
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#define MAX_ENTRIES 11
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struct test_val {
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unsigned int index;
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int foo[MAX_ENTRIES];
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};
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static struct bpf_test tests[] = {
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{
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"add+sub+mul",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_1, 1),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 2),
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BPF_MOV64_IMM(BPF_REG_2, 3),
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BPF_ALU64_REG(BPF_SUB, BPF_REG_1, BPF_REG_2),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -1),
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BPF_ALU64_IMM(BPF_MUL, BPF_REG_1, 3),
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BPF_MOV64_REG(BPF_REG_0, BPF_REG_1),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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},
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{
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"unreachable",
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.insns = {
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BPF_EXIT_INSN(),
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BPF_EXIT_INSN(),
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},
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.errstr = "unreachable",
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.result = REJECT,
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},
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{
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"unreachable2",
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.insns = {
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BPF_JMP_IMM(BPF_JA, 0, 0, 1),
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BPF_JMP_IMM(BPF_JA, 0, 0, 0),
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BPF_EXIT_INSN(),
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},
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.errstr = "unreachable",
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.result = REJECT,
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},
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{
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"out of range jump",
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.insns = {
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BPF_JMP_IMM(BPF_JA, 0, 0, 1),
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BPF_EXIT_INSN(),
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},
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.errstr = "jump out of range",
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.result = REJECT,
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},
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{
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"out of range jump2",
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.insns = {
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BPF_JMP_IMM(BPF_JA, 0, 0, -2),
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BPF_EXIT_INSN(),
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},
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.errstr = "jump out of range",
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.result = REJECT,
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},
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{
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"test1 ld_imm64",
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.insns = {
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 1),
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BPF_LD_IMM64(BPF_REG_0, 0),
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BPF_LD_IMM64(BPF_REG_0, 0),
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BPF_LD_IMM64(BPF_REG_0, 1),
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BPF_LD_IMM64(BPF_REG_0, 1),
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BPF_MOV64_IMM(BPF_REG_0, 2),
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BPF_EXIT_INSN(),
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},
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.errstr = "invalid BPF_LD_IMM insn",
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.errstr_unpriv = "R1 pointer comparison",
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.result = REJECT,
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},
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{
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"test2 ld_imm64",
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.insns = {
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 1),
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BPF_LD_IMM64(BPF_REG_0, 0),
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BPF_LD_IMM64(BPF_REG_0, 0),
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BPF_LD_IMM64(BPF_REG_0, 1),
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BPF_LD_IMM64(BPF_REG_0, 1),
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BPF_EXIT_INSN(),
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},
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.errstr = "invalid BPF_LD_IMM insn",
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.errstr_unpriv = "R1 pointer comparison",
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.result = REJECT,
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},
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{
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"test3 ld_imm64",
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.insns = {
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 1),
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BPF_RAW_INSN(BPF_LD | BPF_IMM | BPF_DW, 0, 0, 0, 0),
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BPF_LD_IMM64(BPF_REG_0, 0),
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BPF_LD_IMM64(BPF_REG_0, 0),
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BPF_LD_IMM64(BPF_REG_0, 1),
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BPF_LD_IMM64(BPF_REG_0, 1),
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BPF_EXIT_INSN(),
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},
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.errstr = "invalid bpf_ld_imm64 insn",
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.result = REJECT,
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},
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{
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"test4 ld_imm64",
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.insns = {
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BPF_RAW_INSN(BPF_LD | BPF_IMM | BPF_DW, 0, 0, 0, 0),
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BPF_EXIT_INSN(),
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},
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.errstr = "invalid bpf_ld_imm64 insn",
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.result = REJECT,
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},
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{
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"test5 ld_imm64",
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.insns = {
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BPF_RAW_INSN(BPF_LD | BPF_IMM | BPF_DW, 0, 0, 0, 0),
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},
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.errstr = "invalid bpf_ld_imm64 insn",
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.result = REJECT,
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},
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{
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"no bpf_exit",
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.insns = {
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BPF_ALU64_REG(BPF_MOV, BPF_REG_0, BPF_REG_2),
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},
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.errstr = "jump out of range",
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.result = REJECT,
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},
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{
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"loop (back-edge)",
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.insns = {
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BPF_JMP_IMM(BPF_JA, 0, 0, -1),
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BPF_EXIT_INSN(),
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},
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.errstr = "back-edge",
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.result = REJECT,
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},
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{
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"loop2 (back-edge)",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
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BPF_MOV64_REG(BPF_REG_2, BPF_REG_0),
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BPF_MOV64_REG(BPF_REG_3, BPF_REG_0),
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BPF_JMP_IMM(BPF_JA, 0, 0, -4),
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BPF_EXIT_INSN(),
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},
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.errstr = "back-edge",
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.result = REJECT,
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},
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{
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"conditional loop",
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.insns = {
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
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BPF_MOV64_REG(BPF_REG_2, BPF_REG_0),
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BPF_MOV64_REG(BPF_REG_3, BPF_REG_0),
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, -3),
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BPF_EXIT_INSN(),
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},
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.errstr = "back-edge",
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.result = REJECT,
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},
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{
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"read uninitialized register",
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.insns = {
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BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
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BPF_EXIT_INSN(),
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},
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.errstr = "R2 !read_ok",
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.result = REJECT,
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},
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{
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"read invalid register",
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.insns = {
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BPF_MOV64_REG(BPF_REG_0, -1),
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BPF_EXIT_INSN(),
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},
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.errstr = "R15 is invalid",
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.result = REJECT,
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},
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{
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"program doesn't init R0 before exit",
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.insns = {
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BPF_ALU64_REG(BPF_MOV, BPF_REG_2, BPF_REG_1),
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BPF_EXIT_INSN(),
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},
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.errstr = "R0 !read_ok",
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.result = REJECT,
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},
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{
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"program doesn't init R0 before exit in all branches",
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.insns = {
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BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 2),
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BPF_MOV64_IMM(BPF_REG_0, 1),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 2),
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BPF_EXIT_INSN(),
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},
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.errstr = "R0 !read_ok",
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.errstr_unpriv = "R1 pointer comparison",
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.result = REJECT,
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},
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{
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"stack out of bounds",
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.insns = {
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BPF_ST_MEM(BPF_DW, BPF_REG_10, 8, 0),
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BPF_EXIT_INSN(),
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},
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.errstr = "invalid stack",
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.result = REJECT,
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},
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{
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"invalid call insn1",
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.insns = {
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BPF_RAW_INSN(BPF_JMP | BPF_CALL | BPF_X, 0, 0, 0, 0),
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BPF_EXIT_INSN(),
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},
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.errstr = "BPF_CALL uses reserved",
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.result = REJECT,
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},
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{
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"invalid call insn2",
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.insns = {
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 1, 0),
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BPF_EXIT_INSN(),
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},
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.errstr = "BPF_CALL uses reserved",
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.result = REJECT,
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},
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{
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"invalid function call",
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.insns = {
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, 1234567),
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BPF_EXIT_INSN(),
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},
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.errstr = "invalid func 1234567",
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.result = REJECT,
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},
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{
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"uninitialized stack1",
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.insns = {
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BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
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BPF_LD_MAP_FD(BPF_REG_1, 0),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
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BPF_FUNC_map_lookup_elem),
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BPF_EXIT_INSN(),
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},
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.fixup_map1 = { 2 },
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.errstr = "invalid indirect read from stack",
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.result = REJECT,
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},
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{
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"uninitialized stack2",
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.insns = {
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BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
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BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_2, -8),
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BPF_EXIT_INSN(),
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},
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.errstr = "invalid read from stack",
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.result = REJECT,
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},
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{
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"invalid argument register",
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.insns = {
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
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BPF_FUNC_get_cgroup_classid),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
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BPF_FUNC_get_cgroup_classid),
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BPF_EXIT_INSN(),
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},
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.errstr = "R1 !read_ok",
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.result = REJECT,
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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},
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{
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"non-invalid argument register",
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.insns = {
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BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_1),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
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BPF_FUNC_get_cgroup_classid),
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BPF_ALU64_REG(BPF_MOV, BPF_REG_1, BPF_REG_6),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
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BPF_FUNC_get_cgroup_classid),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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},
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{
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"check valid spill/fill",
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.insns = {
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/* spill R1(ctx) into stack */
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BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_1, -8),
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/* fill it back into R2 */
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BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_10, -8),
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/* should be able to access R0 = *(R2 + 8) */
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/* BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_2, 8), */
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BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
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BPF_EXIT_INSN(),
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},
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.errstr_unpriv = "R0 leaks addr",
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.result = ACCEPT,
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.result_unpriv = REJECT,
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},
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{
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"check valid spill/fill, skb mark",
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.insns = {
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BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_1),
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BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_6, -8),
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BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_10, -8),
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BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0,
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offsetof(struct __sk_buff, mark)),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.result_unpriv = ACCEPT,
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},
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{
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"check corrupted spill/fill",
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.insns = {
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/* spill R1(ctx) into stack */
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BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_1, -8),
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/* mess up with R1 pointer on stack */
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BPF_ST_MEM(BPF_B, BPF_REG_10, -7, 0x23),
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/* fill back into R0 should fail */
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BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_10, -8),
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BPF_EXIT_INSN(),
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},
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.errstr_unpriv = "attempt to corrupt spilled",
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.errstr = "corrupted spill",
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.result = REJECT,
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},
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{
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"invalid src register in STX",
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.insns = {
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BPF_STX_MEM(BPF_B, BPF_REG_10, -1, -1),
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BPF_EXIT_INSN(),
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},
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.errstr = "R15 is invalid",
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.result = REJECT,
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},
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{
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"invalid dst register in STX",
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.insns = {
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BPF_STX_MEM(BPF_B, 14, BPF_REG_10, -1),
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BPF_EXIT_INSN(),
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},
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.errstr = "R14 is invalid",
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.result = REJECT,
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},
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{
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"invalid dst register in ST",
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.insns = {
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BPF_ST_MEM(BPF_B, 14, -1, -1),
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BPF_EXIT_INSN(),
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},
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.errstr = "R14 is invalid",
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.result = REJECT,
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},
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{
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"invalid src register in LDX",
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.insns = {
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BPF_LDX_MEM(BPF_B, BPF_REG_0, 12, 0),
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BPF_EXIT_INSN(),
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},
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.errstr = "R12 is invalid",
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.result = REJECT,
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},
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{
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"invalid dst register in LDX",
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.insns = {
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BPF_LDX_MEM(BPF_B, 11, BPF_REG_1, 0),
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BPF_EXIT_INSN(),
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},
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.errstr = "R11 is invalid",
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.result = REJECT,
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},
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{
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"junk insn",
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.insns = {
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BPF_RAW_INSN(0, 0, 0, 0, 0),
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BPF_EXIT_INSN(),
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},
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.errstr = "invalid BPF_LD_IMM",
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.result = REJECT,
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},
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{
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"junk insn2",
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.insns = {
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BPF_RAW_INSN(1, 0, 0, 0, 0),
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BPF_EXIT_INSN(),
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},
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.errstr = "BPF_LDX uses reserved fields",
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.result = REJECT,
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},
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{
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"junk insn3",
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.insns = {
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BPF_RAW_INSN(-1, 0, 0, 0, 0),
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BPF_EXIT_INSN(),
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},
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.errstr = "invalid BPF_ALU opcode f0",
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.result = REJECT,
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},
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{
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"junk insn4",
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|
.insns = {
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BPF_RAW_INSN(-1, -1, -1, -1, -1),
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BPF_EXIT_INSN(),
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},
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.errstr = "invalid BPF_ALU opcode f0",
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.result = REJECT,
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},
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{
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"junk insn5",
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.insns = {
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BPF_RAW_INSN(0x7f, -1, -1, -1, -1),
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BPF_EXIT_INSN(),
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},
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.errstr = "BPF_ALU uses reserved fields",
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.result = REJECT,
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},
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{
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|
"misaligned read from stack",
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|
.insns = {
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BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
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BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_2, -4),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr = "misaligned access",
|
|
.result = REJECT,
|
|
},
|
|
{
|
|
"invalid map_fd for function call",
|
|
.insns = {
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_delete_elem),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr = "fd 0 is not pointing to valid bpf_map",
|
|
.result = REJECT,
|
|
},
|
|
{
|
|
"don't check return value before access",
|
|
.insns = {
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map1 = { 3 },
|
|
.errstr = "R0 invalid mem access 'map_value_or_null'",
|
|
.result = REJECT,
|
|
},
|
|
{
|
|
"access memory with incorrect alignment",
|
|
.insns = {
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_0, 4, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map1 = { 3 },
|
|
.errstr = "misaligned access",
|
|
.result = REJECT,
|
|
},
|
|
{
|
|
"sometimes access memory with incorrect alignment",
|
|
.insns = {
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 0),
|
|
BPF_EXIT_INSN(),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 1),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map1 = { 3 },
|
|
.errstr = "R0 invalid mem access",
|
|
.errstr_unpriv = "R0 leaks addr",
|
|
.result = REJECT,
|
|
},
|
|
{
|
|
"jump test 1",
|
|
.insns = {
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_1, -8),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 1),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_2, -8, 0),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 1, 1),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_2, -16, 1),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 2, 1),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_2, -8, 2),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 3, 1),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_2, -16, 3),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 4, 1),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_2, -8, 4),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 5, 1),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_2, -32, 5),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr_unpriv = "R1 pointer comparison",
|
|
.result_unpriv = REJECT,
|
|
.result = ACCEPT,
|
|
},
|
|
{
|
|
"jump test 2",
|
|
.insns = {
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 2),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_2, -8, 0),
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 14),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 1, 2),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_2, -16, 0),
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 11),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 2, 2),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_2, -32, 0),
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 8),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 3, 2),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_2, -40, 0),
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 5),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 4, 2),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_2, -48, 0),
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 2),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 5, 1),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_2, -56, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr_unpriv = "R1 pointer comparison",
|
|
.result_unpriv = REJECT,
|
|
.result = ACCEPT,
|
|
},
|
|
{
|
|
"jump test 3",
|
|
.insns = {
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 3),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_2, -8, 0),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 19),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 1, 3),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_2, -16, 0),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -16),
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 15),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 2, 3),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_2, -32, 0),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -32),
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 11),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 3, 3),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_2, -40, 0),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -40),
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 7),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 4, 3),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_2, -48, 0),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -48),
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 3),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 5, 0),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_2, -56, 0),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -56),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_delete_elem),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map1 = { 24 },
|
|
.errstr_unpriv = "R1 pointer comparison",
|
|
.result_unpriv = REJECT,
|
|
.result = ACCEPT,
|
|
},
|
|
{
|
|
"jump test 4",
|
|
.insns = {
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 1),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 2),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 3),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 4),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 1),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 2),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 3),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 4),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 1),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 2),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 3),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 4),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 1),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 2),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 3),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 4),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 1),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 2),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 3),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 4),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 1),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 2),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 3),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 4),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 1),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 2),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 3),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 4),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 1),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 2),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 3),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 4),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 1),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 2),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 3),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 4),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 0),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 0),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 0),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, BPF_REG_10, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr_unpriv = "R1 pointer comparison",
|
|
.result_unpriv = REJECT,
|
|
.result = ACCEPT,
|
|
},
|
|
{
|
|
"jump test 5",
|
|
.insns = {
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_2),
|
|
BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 2),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_3, -8),
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 2),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_2, -8),
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 2),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_3, -8),
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 2),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_2, -8),
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 2),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_3, -8),
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 2),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_2, -8),
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 2),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_3, -8),
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 2),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_2, -8),
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 2),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_3, -8),
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 2),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_2, -8),
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr_unpriv = "R1 pointer comparison",
|
|
.result_unpriv = REJECT,
|
|
.result = ACCEPT,
|
|
},
|
|
{
|
|
"access skb fields ok",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
|
|
offsetof(struct __sk_buff, len)),
|
|
BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 1),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
|
|
offsetof(struct __sk_buff, mark)),
|
|
BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 1),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
|
|
offsetof(struct __sk_buff, pkt_type)),
|
|
BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 1),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
|
|
offsetof(struct __sk_buff, queue_mapping)),
|
|
BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 0),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
|
|
offsetof(struct __sk_buff, protocol)),
|
|
BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 0),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
|
|
offsetof(struct __sk_buff, vlan_present)),
|
|
BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 0),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
|
|
offsetof(struct __sk_buff, vlan_tci)),
|
|
BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = ACCEPT,
|
|
},
|
|
{
|
|
"access skb fields bad1",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, -4),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr = "invalid bpf_context access",
|
|
.result = REJECT,
|
|
},
|
|
{
|
|
"access skb fields bad2",
|
|
.insns = {
|
|
BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 9),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
|
|
BPF_EXIT_INSN(),
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
|
|
offsetof(struct __sk_buff, pkt_type)),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map1 = { 4 },
|
|
.errstr = "different pointers",
|
|
.errstr_unpriv = "R1 pointer comparison",
|
|
.result = REJECT,
|
|
},
|
|
{
|
|
"access skb fields bad3",
|
|
.insns = {
|
|
BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 2),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
|
|
offsetof(struct __sk_buff, pkt_type)),
|
|
BPF_EXIT_INSN(),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
|
|
BPF_EXIT_INSN(),
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, -12),
|
|
},
|
|
.fixup_map1 = { 6 },
|
|
.errstr = "different pointers",
|
|
.errstr_unpriv = "R1 pointer comparison",
|
|
.result = REJECT,
|
|
},
|
|
{
|
|
"access skb fields bad4",
|
|
.insns = {
|
|
BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 3),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_1,
|
|
offsetof(struct __sk_buff, len)),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
|
|
BPF_EXIT_INSN(),
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
|
|
BPF_JMP_IMM(BPF_JA, 0, 0, -13),
|
|
},
|
|
.fixup_map1 = { 7 },
|
|
.errstr = "different pointers",
|
|
.errstr_unpriv = "R1 pointer comparison",
|
|
.result = REJECT,
|
|
},
|
|
{
|
|
"check skb->mark is not writeable by sockets",
|
|
.insns = {
|
|
BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_1,
|
|
offsetof(struct __sk_buff, mark)),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr = "invalid bpf_context access",
|
|
.errstr_unpriv = "R1 leaks addr",
|
|
.result = REJECT,
|
|
},
|
|
{
|
|
"check skb->tc_index is not writeable by sockets",
|
|
.insns = {
|
|
BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_1,
|
|
offsetof(struct __sk_buff, tc_index)),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr = "invalid bpf_context access",
|
|
.errstr_unpriv = "R1 leaks addr",
|
|
.result = REJECT,
|
|
},
|
|
{
|
|
"check non-u32 access to cb",
|
|
.insns = {
|
|
BPF_STX_MEM(BPF_H, BPF_REG_1, BPF_REG_1,
|
|
offsetof(struct __sk_buff, cb[0])),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr = "invalid bpf_context access",
|
|
.errstr_unpriv = "R1 leaks addr",
|
|
.result = REJECT,
|
|
},
|
|
{
|
|
"check out of range skb->cb access",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
|
|
offsetof(struct __sk_buff, cb[0]) + 256),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr = "invalid bpf_context access",
|
|
.errstr_unpriv = "",
|
|
.result = REJECT,
|
|
.prog_type = BPF_PROG_TYPE_SCHED_ACT,
|
|
},
|
|
{
|
|
"write skb fields from socket prog",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
|
|
offsetof(struct __sk_buff, cb[4])),
|
|
BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 1),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
|
|
offsetof(struct __sk_buff, mark)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
|
|
offsetof(struct __sk_buff, tc_index)),
|
|
BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 1),
|
|
BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_1,
|
|
offsetof(struct __sk_buff, cb[0])),
|
|
BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_1,
|
|
offsetof(struct __sk_buff, cb[2])),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = ACCEPT,
|
|
.errstr_unpriv = "R1 leaks addr",
|
|
.result_unpriv = REJECT,
|
|
},
|
|
{
|
|
"write skb fields from tc_cls_act prog",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
|
|
offsetof(struct __sk_buff, cb[0])),
|
|
BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_0,
|
|
offsetof(struct __sk_buff, mark)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
|
|
offsetof(struct __sk_buff, tc_index)),
|
|
BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_0,
|
|
offsetof(struct __sk_buff, tc_index)),
|
|
BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_0,
|
|
offsetof(struct __sk_buff, cb[3])),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr_unpriv = "",
|
|
.result_unpriv = REJECT,
|
|
.result = ACCEPT,
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"PTR_TO_STACK store/load",
|
|
.insns = {
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -10),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_1, 2, 0xfaceb00c),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 2),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = ACCEPT,
|
|
},
|
|
{
|
|
"PTR_TO_STACK store/load - bad alignment on off",
|
|
.insns = {
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_1, 2, 0xfaceb00c),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 2),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "misaligned access off -6 size 8",
|
|
},
|
|
{
|
|
"PTR_TO_STACK store/load - bad alignment on reg",
|
|
.insns = {
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -10),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_1, 8, 0xfaceb00c),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 8),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "misaligned access off -2 size 8",
|
|
},
|
|
{
|
|
"PTR_TO_STACK store/load - out of bounds low",
|
|
.insns = {
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -80000),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_1, 8, 0xfaceb00c),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 8),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "invalid stack off=-79992 size=8",
|
|
},
|
|
{
|
|
"PTR_TO_STACK store/load - out of bounds high",
|
|
.insns = {
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_1, 8, 0xfaceb00c),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 8),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "invalid stack off=0 size=8",
|
|
},
|
|
{
|
|
"unpriv: return pointer",
|
|
.insns = {
|
|
BPF_MOV64_REG(BPF_REG_0, BPF_REG_10),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = ACCEPT,
|
|
.result_unpriv = REJECT,
|
|
.errstr_unpriv = "R0 leaks addr",
|
|
},
|
|
{
|
|
"unpriv: add const to pointer",
|
|
.insns = {
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = ACCEPT,
|
|
.result_unpriv = REJECT,
|
|
.errstr_unpriv = "R1 pointer arithmetic",
|
|
},
|
|
{
|
|
"unpriv: add pointer to pointer",
|
|
.insns = {
|
|
BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_10),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = ACCEPT,
|
|
.result_unpriv = REJECT,
|
|
.errstr_unpriv = "R1 pointer arithmetic",
|
|
},
|
|
{
|
|
"unpriv: neg pointer",
|
|
.insns = {
|
|
BPF_ALU64_IMM(BPF_NEG, BPF_REG_1, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = ACCEPT,
|
|
.result_unpriv = REJECT,
|
|
.errstr_unpriv = "R1 pointer arithmetic",
|
|
},
|
|
{
|
|
"unpriv: cmp pointer with const",
|
|
.insns = {
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = ACCEPT,
|
|
.result_unpriv = REJECT,
|
|
.errstr_unpriv = "R1 pointer comparison",
|
|
},
|
|
{
|
|
"unpriv: cmp pointer with pointer",
|
|
.insns = {
|
|
BPF_JMP_REG(BPF_JEQ, BPF_REG_1, BPF_REG_10, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = ACCEPT,
|
|
.result_unpriv = REJECT,
|
|
.errstr_unpriv = "R10 pointer comparison",
|
|
},
|
|
{
|
|
"unpriv: check that printk is disallowed",
|
|
.insns = {
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8),
|
|
BPF_MOV64_IMM(BPF_REG_2, 8),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_1),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_trace_printk),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr_unpriv = "unknown func 6",
|
|
.result_unpriv = REJECT,
|
|
.result = ACCEPT,
|
|
},
|
|
{
|
|
"unpriv: pass pointer to helper function",
|
|
.insns = {
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_2),
|
|
BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_update_elem),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map1 = { 3 },
|
|
.errstr_unpriv = "R4 leaks addr",
|
|
.result_unpriv = REJECT,
|
|
.result = ACCEPT,
|
|
},
|
|
{
|
|
"unpriv: indirectly pass pointer on stack to helper function",
|
|
.insns = {
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_10, -8),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map1 = { 3 },
|
|
.errstr = "invalid indirect read from stack off -8+0 size 8",
|
|
.result = REJECT,
|
|
},
|
|
{
|
|
"unpriv: mangle pointer on stack 1",
|
|
.insns = {
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_10, -8),
|
|
BPF_ST_MEM(BPF_W, BPF_REG_10, -8, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr_unpriv = "attempt to corrupt spilled",
|
|
.result_unpriv = REJECT,
|
|
.result = ACCEPT,
|
|
},
|
|
{
|
|
"unpriv: mangle pointer on stack 2",
|
|
.insns = {
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_10, -8),
|
|
BPF_ST_MEM(BPF_B, BPF_REG_10, -1, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr_unpriv = "attempt to corrupt spilled",
|
|
.result_unpriv = REJECT,
|
|
.result = ACCEPT,
|
|
},
|
|
{
|
|
"unpriv: read pointer from stack in small chunks",
|
|
.insns = {
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_10, -8),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_10, -8),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr = "invalid size",
|
|
.result = REJECT,
|
|
},
|
|
{
|
|
"unpriv: write pointer into ctx",
|
|
.insns = {
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr_unpriv = "R1 leaks addr",
|
|
.result_unpriv = REJECT,
|
|
.errstr = "invalid bpf_context access",
|
|
.result = REJECT,
|
|
},
|
|
{
|
|
"unpriv: spill/fill of ctx",
|
|
.insns = {
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 0),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_6, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = ACCEPT,
|
|
},
|
|
{
|
|
"unpriv: spill/fill of ctx 2",
|
|
.insns = {
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 0),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_6, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_get_hash_recalc),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = ACCEPT,
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"unpriv: spill/fill of ctx 3",
|
|
.insns = {
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 0),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_10, 0),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_6, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_get_hash_recalc),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "R1 type=fp expected=ctx",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"unpriv: spill/fill of ctx 4",
|
|
.insns = {
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 1),
|
|
BPF_RAW_INSN(BPF_STX | BPF_XADD | BPF_DW, BPF_REG_10,
|
|
BPF_REG_0, -8, 0),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_6, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_get_hash_recalc),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "R1 type=inv expected=ctx",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"unpriv: spill/fill of different pointers stx",
|
|
.insns = {
|
|
BPF_MOV64_IMM(BPF_REG_3, 42),
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 3),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -16),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_2, 0),
|
|
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 1),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 0),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_6, 0),
|
|
BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_3,
|
|
offsetof(struct __sk_buff, mark)),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "same insn cannot be used with different pointers",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"unpriv: spill/fill of different pointers ldx",
|
|
.insns = {
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 3),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2,
|
|
-(__s32)offsetof(struct bpf_perf_event_data,
|
|
sample_period) - 8),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_2, 0),
|
|
BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 1),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 0),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_6, 0),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1,
|
|
offsetof(struct bpf_perf_event_data,
|
|
sample_period)),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "same insn cannot be used with different pointers",
|
|
.prog_type = BPF_PROG_TYPE_PERF_EVENT,
|
|
},
|
|
{
|
|
"unpriv: write pointer into map elem value",
|
|
.insns = {
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_0, BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map1 = { 3 },
|
|
.errstr_unpriv = "R0 leaks addr",
|
|
.result_unpriv = REJECT,
|
|
.result = ACCEPT,
|
|
},
|
|
{
|
|
"unpriv: partial copy of pointer",
|
|
.insns = {
|
|
BPF_MOV32_REG(BPF_REG_1, BPF_REG_10),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr_unpriv = "R10 partial copy",
|
|
.result_unpriv = REJECT,
|
|
.result = ACCEPT,
|
|
},
|
|
{
|
|
"unpriv: pass pointer to tail_call",
|
|
.insns = {
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_1),
|
|
BPF_LD_MAP_FD(BPF_REG_2, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_tail_call),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_prog = { 1 },
|
|
.errstr_unpriv = "R3 leaks addr into helper",
|
|
.result_unpriv = REJECT,
|
|
.result = ACCEPT,
|
|
},
|
|
{
|
|
"unpriv: cmp map pointer with zero",
|
|
.insns = {
|
|
BPF_MOV64_IMM(BPF_REG_1, 0),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map1 = { 1 },
|
|
.errstr_unpriv = "R1 pointer comparison",
|
|
.result_unpriv = REJECT,
|
|
.result = ACCEPT,
|
|
},
|
|
{
|
|
"unpriv: write into frame pointer",
|
|
.insns = {
|
|
BPF_MOV64_REG(BPF_REG_10, BPF_REG_1),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr = "frame pointer is read only",
|
|
.result = REJECT,
|
|
},
|
|
{
|
|
"unpriv: spill/fill frame pointer",
|
|
.insns = {
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_10, 0),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_10, BPF_REG_6, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr = "frame pointer is read only",
|
|
.result = REJECT,
|
|
},
|
|
{
|
|
"unpriv: cmp of frame pointer",
|
|
.insns = {
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_10, 0, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr_unpriv = "R10 pointer comparison",
|
|
.result_unpriv = REJECT,
|
|
.result = ACCEPT,
|
|
},
|
|
{
|
|
"unpriv: cmp of stack pointer",
|
|
.insns = {
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_2, 0, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr_unpriv = "R2 pointer comparison",
|
|
.result_unpriv = REJECT,
|
|
.result = ACCEPT,
|
|
},
|
|
{
|
|
"unpriv: obfuscate stack pointer",
|
|
.insns = {
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr_unpriv = "R2 pointer arithmetic",
|
|
.result_unpriv = REJECT,
|
|
.result = ACCEPT,
|
|
},
|
|
{
|
|
"raw_stack: no skb_load_bytes",
|
|
.insns = {
|
|
BPF_MOV64_IMM(BPF_REG_2, 4),
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
|
|
BPF_MOV64_IMM(BPF_REG_4, 8),
|
|
/* Call to skb_load_bytes() omitted. */
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "invalid read from stack off -8+0 size 8",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"raw_stack: skb_load_bytes, negative len",
|
|
.insns = {
|
|
BPF_MOV64_IMM(BPF_REG_2, 4),
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
|
|
BPF_MOV64_IMM(BPF_REG_4, -8),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_skb_load_bytes),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "invalid stack type R3",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"raw_stack: skb_load_bytes, negative len 2",
|
|
.insns = {
|
|
BPF_MOV64_IMM(BPF_REG_2, 4),
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
|
|
BPF_MOV64_IMM(BPF_REG_4, ~0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_skb_load_bytes),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "invalid stack type R3",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"raw_stack: skb_load_bytes, zero len",
|
|
.insns = {
|
|
BPF_MOV64_IMM(BPF_REG_2, 4),
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
|
|
BPF_MOV64_IMM(BPF_REG_4, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_skb_load_bytes),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "invalid stack type R3",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"raw_stack: skb_load_bytes, no init",
|
|
.insns = {
|
|
BPF_MOV64_IMM(BPF_REG_2, 4),
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
|
|
BPF_MOV64_IMM(BPF_REG_4, 8),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_skb_load_bytes),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = ACCEPT,
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"raw_stack: skb_load_bytes, init",
|
|
.insns = {
|
|
BPF_MOV64_IMM(BPF_REG_2, 4),
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_6, 0, 0xcafe),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
|
|
BPF_MOV64_IMM(BPF_REG_4, 8),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_skb_load_bytes),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = ACCEPT,
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"raw_stack: skb_load_bytes, spilled regs around bounds",
|
|
.insns = {
|
|
BPF_MOV64_IMM(BPF_REG_2, 4),
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -16),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, -8),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 8),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
|
|
BPF_MOV64_IMM(BPF_REG_4, 8),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_skb_load_bytes),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, -8),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_6, 8),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0,
|
|
offsetof(struct __sk_buff, mark)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_2,
|
|
offsetof(struct __sk_buff, priority)),
|
|
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_2),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = ACCEPT,
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"raw_stack: skb_load_bytes, spilled regs corruption",
|
|
.insns = {
|
|
BPF_MOV64_IMM(BPF_REG_2, 4),
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 0),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
|
|
BPF_MOV64_IMM(BPF_REG_4, 8),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_skb_load_bytes),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0,
|
|
offsetof(struct __sk_buff, mark)),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "R0 invalid mem access 'inv'",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"raw_stack: skb_load_bytes, spilled regs corruption 2",
|
|
.insns = {
|
|
BPF_MOV64_IMM(BPF_REG_2, 4),
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -16),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, -8),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 0),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 8),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
|
|
BPF_MOV64_IMM(BPF_REG_4, 8),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_skb_load_bytes),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, -8),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_6, 8),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_3, BPF_REG_6, 0),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0,
|
|
offsetof(struct __sk_buff, mark)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_2,
|
|
offsetof(struct __sk_buff, priority)),
|
|
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_2),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_3,
|
|
offsetof(struct __sk_buff, pkt_type)),
|
|
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_3),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "R3 invalid mem access 'inv'",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"raw_stack: skb_load_bytes, spilled regs + data",
|
|
.insns = {
|
|
BPF_MOV64_IMM(BPF_REG_2, 4),
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -16),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, -8),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 0),
|
|
BPF_STX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 8),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
|
|
BPF_MOV64_IMM(BPF_REG_4, 8),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_skb_load_bytes),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, -8),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_6, 8),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_3, BPF_REG_6, 0),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0,
|
|
offsetof(struct __sk_buff, mark)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_2,
|
|
offsetof(struct __sk_buff, priority)),
|
|
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_2),
|
|
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_3),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = ACCEPT,
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"raw_stack: skb_load_bytes, invalid access 1",
|
|
.insns = {
|
|
BPF_MOV64_IMM(BPF_REG_2, 4),
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -513),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
|
|
BPF_MOV64_IMM(BPF_REG_4, 8),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_skb_load_bytes),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "invalid stack type R3 off=-513 access_size=8",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"raw_stack: skb_load_bytes, invalid access 2",
|
|
.insns = {
|
|
BPF_MOV64_IMM(BPF_REG_2, 4),
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -1),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
|
|
BPF_MOV64_IMM(BPF_REG_4, 8),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_skb_load_bytes),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "invalid stack type R3 off=-1 access_size=8",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"raw_stack: skb_load_bytes, invalid access 3",
|
|
.insns = {
|
|
BPF_MOV64_IMM(BPF_REG_2, 4),
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 0xffffffff),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
|
|
BPF_MOV64_IMM(BPF_REG_4, 0xffffffff),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_skb_load_bytes),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "invalid stack type R3 off=-1 access_size=-1",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"raw_stack: skb_load_bytes, invalid access 4",
|
|
.insns = {
|
|
BPF_MOV64_IMM(BPF_REG_2, 4),
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -1),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
|
|
BPF_MOV64_IMM(BPF_REG_4, 0x7fffffff),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_skb_load_bytes),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "invalid stack type R3 off=-1 access_size=2147483647",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"raw_stack: skb_load_bytes, invalid access 5",
|
|
.insns = {
|
|
BPF_MOV64_IMM(BPF_REG_2, 4),
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -512),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
|
|
BPF_MOV64_IMM(BPF_REG_4, 0x7fffffff),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_skb_load_bytes),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "invalid stack type R3 off=-512 access_size=2147483647",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"raw_stack: skb_load_bytes, invalid access 6",
|
|
.insns = {
|
|
BPF_MOV64_IMM(BPF_REG_2, 4),
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -512),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
|
|
BPF_MOV64_IMM(BPF_REG_4, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_skb_load_bytes),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "invalid stack type R3 off=-512 access_size=0",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"raw_stack: skb_load_bytes, large access",
|
|
.insns = {
|
|
BPF_MOV64_IMM(BPF_REG_2, 4),
|
|
BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -512),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
|
|
BPF_MOV64_IMM(BPF_REG_4, 512),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_skb_load_bytes),
|
|
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = ACCEPT,
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"direct packet access: test1",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
|
|
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = ACCEPT,
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"direct packet access: test2",
|
|
.insns = {
|
|
BPF_MOV64_IMM(BPF_REG_0, 1),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_MOV64_REG(BPF_REG_5, BPF_REG_3),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_5, 14),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_5, BPF_REG_4, 15),
|
|
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_3, 7),
|
|
BPF_LDX_MEM(BPF_B, BPF_REG_4, BPF_REG_3, 12),
|
|
BPF_ALU64_IMM(BPF_MUL, BPF_REG_4, 14),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_ALU64_REG(BPF_ADD, BPF_REG_3, BPF_REG_4),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_1),
|
|
BPF_ALU64_IMM(BPF_LSH, BPF_REG_2, 48),
|
|
BPF_ALU64_IMM(BPF_RSH, BPF_REG_2, 48),
|
|
BPF_ALU64_REG(BPF_ADD, BPF_REG_3, BPF_REG_2),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_3),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 8),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_2, BPF_REG_1, 1),
|
|
BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_3, 4),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = ACCEPT,
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"direct packet access: test3",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr = "invalid bpf_context access off=76",
|
|
.result = REJECT,
|
|
.prog_type = BPF_PROG_TYPE_SOCKET_FILTER,
|
|
},
|
|
{
|
|
"direct packet access: test4 (write)",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
|
|
BPF_STX_MEM(BPF_B, BPF_REG_2, BPF_REG_2, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = ACCEPT,
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"direct packet access: test5 (pkt_end >= reg, good access)",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
|
|
BPF_JMP_REG(BPF_JGE, BPF_REG_3, BPF_REG_0, 2),
|
|
BPF_MOV64_IMM(BPF_REG_0, 1),
|
|
BPF_EXIT_INSN(),
|
|
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = ACCEPT,
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"direct packet access: test6 (pkt_end >= reg, bad access)",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
|
|
BPF_JMP_REG(BPF_JGE, BPF_REG_3, BPF_REG_0, 3),
|
|
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 1),
|
|
BPF_EXIT_INSN(),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr = "invalid access to packet",
|
|
.result = REJECT,
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"direct packet access: test7 (pkt_end >= reg, both accesses)",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
|
|
BPF_JMP_REG(BPF_JGE, BPF_REG_3, BPF_REG_0, 3),
|
|
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 1),
|
|
BPF_EXIT_INSN(),
|
|
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr = "invalid access to packet",
|
|
.result = REJECT,
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"direct packet access: test8 (double test, variant 1)",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
|
|
BPF_JMP_REG(BPF_JGE, BPF_REG_3, BPF_REG_0, 4),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
|
|
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 1),
|
|
BPF_EXIT_INSN(),
|
|
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = ACCEPT,
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"direct packet access: test9 (double test, variant 2)",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
|
|
BPF_JMP_REG(BPF_JGE, BPF_REG_3, BPF_REG_0, 2),
|
|
BPF_MOV64_IMM(BPF_REG_0, 1),
|
|
BPF_EXIT_INSN(),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
|
|
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
|
|
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = ACCEPT,
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"direct packet access: test10 (write invalid)",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 2),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
BPF_STX_MEM(BPF_B, BPF_REG_2, BPF_REG_2, 0),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.errstr = "invalid access to packet",
|
|
.result = REJECT,
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"helper access to packet: test1, valid packet_ptr range",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
|
offsetof(struct xdp_md, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
|
offsetof(struct xdp_md, data_end)),
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_3, 5),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_2),
|
|
BPF_MOV64_IMM(BPF_REG_4, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_update_elem),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map1 = { 5 },
|
|
.result_unpriv = ACCEPT,
|
|
.result = ACCEPT,
|
|
.prog_type = BPF_PROG_TYPE_XDP,
|
|
},
|
|
{
|
|
"helper access to packet: test2, unchecked packet_ptr",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
|
offsetof(struct xdp_md, data)),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map1 = { 1 },
|
|
.result = REJECT,
|
|
.errstr = "invalid access to packet",
|
|
.prog_type = BPF_PROG_TYPE_XDP,
|
|
},
|
|
{
|
|
"helper access to packet: test3, variable add",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
|
offsetof(struct xdp_md, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
|
offsetof(struct xdp_md, data_end)),
|
|
BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 8),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 10),
|
|
BPF_LDX_MEM(BPF_B, BPF_REG_5, BPF_REG_2, 0),
|
|
BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
|
|
BPF_ALU64_REG(BPF_ADD, BPF_REG_4, BPF_REG_5),
|
|
BPF_MOV64_REG(BPF_REG_5, BPF_REG_4),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_5, 8),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_5, BPF_REG_3, 4),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_4),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map1 = { 11 },
|
|
.result = ACCEPT,
|
|
.prog_type = BPF_PROG_TYPE_XDP,
|
|
},
|
|
{
|
|
"helper access to packet: test4, packet_ptr with bad range",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
|
offsetof(struct xdp_md, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
|
offsetof(struct xdp_md, data_end)),
|
|
BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 4),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 2),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map1 = { 7 },
|
|
.result = REJECT,
|
|
.errstr = "invalid access to packet",
|
|
.prog_type = BPF_PROG_TYPE_XDP,
|
|
},
|
|
{
|
|
"helper access to packet: test5, packet_ptr with too short range",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
|
offsetof(struct xdp_md, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
|
offsetof(struct xdp_md, data_end)),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 1),
|
|
BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 7),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 3),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map1 = { 6 },
|
|
.result = REJECT,
|
|
.errstr = "invalid access to packet",
|
|
.prog_type = BPF_PROG_TYPE_XDP,
|
|
},
|
|
{
|
|
"helper access to packet: test6, cls valid packet_ptr range",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_3, 5),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_2),
|
|
BPF_MOV64_IMM(BPF_REG_4, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_update_elem),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map1 = { 5 },
|
|
.result = ACCEPT,
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"helper access to packet: test7, cls unchecked packet_ptr",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map1 = { 1 },
|
|
.result = REJECT,
|
|
.errstr = "invalid access to packet",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"helper access to packet: test8, cls variable add",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 8),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 10),
|
|
BPF_LDX_MEM(BPF_B, BPF_REG_5, BPF_REG_2, 0),
|
|
BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
|
|
BPF_ALU64_REG(BPF_ADD, BPF_REG_4, BPF_REG_5),
|
|
BPF_MOV64_REG(BPF_REG_5, BPF_REG_4),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_5, 8),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_5, BPF_REG_3, 4),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_4),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map1 = { 11 },
|
|
.result = ACCEPT,
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"helper access to packet: test9, cls packet_ptr with bad range",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 4),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 2),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map1 = { 7 },
|
|
.result = REJECT,
|
|
.errstr = "invalid access to packet",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"helper access to packet: test10, cls packet_ptr with too short range",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 1),
|
|
BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 7),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 3),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map1 = { 6 },
|
|
.result = REJECT,
|
|
.errstr = "invalid access to packet",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"helper access to packet: test11, cls unsuitable helper 1",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_3, 7),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_3, BPF_REG_7, 4),
|
|
BPF_MOV64_IMM(BPF_REG_2, 0),
|
|
BPF_MOV64_IMM(BPF_REG_4, 42),
|
|
BPF_MOV64_IMM(BPF_REG_5, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_skb_store_bytes),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "helper access to the packet",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"helper access to packet: test12, cls unsuitable helper 2",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 8),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_6, BPF_REG_7, 3),
|
|
BPF_MOV64_IMM(BPF_REG_2, 0),
|
|
BPF_MOV64_IMM(BPF_REG_4, 4),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_skb_load_bytes),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "helper access to the packet",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"helper access to packet: test13, cls helper ok",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
|
BPF_MOV64_IMM(BPF_REG_2, 4),
|
|
BPF_MOV64_IMM(BPF_REG_3, 0),
|
|
BPF_MOV64_IMM(BPF_REG_4, 0),
|
|
BPF_MOV64_IMM(BPF_REG_5, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_csum_diff),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = ACCEPT,
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"helper access to packet: test14, cls helper fail sub",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
|
|
BPF_ALU64_IMM(BPF_SUB, BPF_REG_1, 4),
|
|
BPF_MOV64_IMM(BPF_REG_2, 4),
|
|
BPF_MOV64_IMM(BPF_REG_3, 0),
|
|
BPF_MOV64_IMM(BPF_REG_4, 0),
|
|
BPF_MOV64_IMM(BPF_REG_5, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_csum_diff),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "type=inv expected=fp",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"helper access to packet: test15, cls helper fail range 1",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
|
BPF_MOV64_IMM(BPF_REG_2, 8),
|
|
BPF_MOV64_IMM(BPF_REG_3, 0),
|
|
BPF_MOV64_IMM(BPF_REG_4, 0),
|
|
BPF_MOV64_IMM(BPF_REG_5, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_csum_diff),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "invalid access to packet",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"helper access to packet: test16, cls helper fail range 2",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
|
BPF_MOV64_IMM(BPF_REG_2, -9),
|
|
BPF_MOV64_IMM(BPF_REG_3, 0),
|
|
BPF_MOV64_IMM(BPF_REG_4, 0),
|
|
BPF_MOV64_IMM(BPF_REG_5, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_csum_diff),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "invalid access to packet",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"helper access to packet: test17, cls helper fail range 3",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
|
BPF_MOV64_IMM(BPF_REG_2, ~0),
|
|
BPF_MOV64_IMM(BPF_REG_3, 0),
|
|
BPF_MOV64_IMM(BPF_REG_4, 0),
|
|
BPF_MOV64_IMM(BPF_REG_5, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_csum_diff),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "invalid access to packet",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"helper access to packet: test18, cls helper fail range zero",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
|
BPF_MOV64_IMM(BPF_REG_2, 0),
|
|
BPF_MOV64_IMM(BPF_REG_3, 0),
|
|
BPF_MOV64_IMM(BPF_REG_4, 0),
|
|
BPF_MOV64_IMM(BPF_REG_5, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_csum_diff),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "invalid access to packet",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"helper access to packet: test19, pkt end as input",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_7),
|
|
BPF_MOV64_IMM(BPF_REG_2, 4),
|
|
BPF_MOV64_IMM(BPF_REG_3, 0),
|
|
BPF_MOV64_IMM(BPF_REG_4, 0),
|
|
BPF_MOV64_IMM(BPF_REG_5, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_csum_diff),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "R1 type=pkt_end expected=fp",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"helper access to packet: test20, wrong reg",
|
|
.insns = {
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data)),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
|
offsetof(struct __sk_buff, data_end)),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
|
|
BPF_MOV64_IMM(BPF_REG_2, 4),
|
|
BPF_MOV64_IMM(BPF_REG_3, 0),
|
|
BPF_MOV64_IMM(BPF_REG_4, 0),
|
|
BPF_MOV64_IMM(BPF_REG_5, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_csum_diff),
|
|
BPF_MOV64_IMM(BPF_REG_0, 0),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.result = REJECT,
|
|
.errstr = "invalid access to packet",
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
|
},
|
|
{
|
|
"valid map access into an array with a constant",
|
|
.insns = {
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_0, 0,
|
|
offsetof(struct test_val, foo)),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map2 = { 3 },
|
|
.errstr_unpriv = "R0 leaks addr",
|
|
.result_unpriv = REJECT,
|
|
.result = ACCEPT,
|
|
},
|
|
{
|
|
"valid map access into an array with a register",
|
|
.insns = {
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4),
|
|
BPF_MOV64_IMM(BPF_REG_1, 4),
|
|
BPF_ALU64_IMM(BPF_LSH, BPF_REG_1, 2),
|
|
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_0, 0,
|
|
offsetof(struct test_val, foo)),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map2 = { 3 },
|
|
.errstr_unpriv = "R0 pointer arithmetic prohibited",
|
|
.result_unpriv = REJECT,
|
|
.result = ACCEPT,
|
|
},
|
|
{
|
|
"valid map access into an array with a variable",
|
|
.insns = {
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 5),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0),
|
|
BPF_JMP_IMM(BPF_JGE, BPF_REG_1, MAX_ENTRIES, 3),
|
|
BPF_ALU64_IMM(BPF_LSH, BPF_REG_1, 2),
|
|
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_0, 0,
|
|
offsetof(struct test_val, foo)),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map2 = { 3 },
|
|
.errstr_unpriv = "R0 pointer arithmetic prohibited",
|
|
.result_unpriv = REJECT,
|
|
.result = ACCEPT,
|
|
},
|
|
{
|
|
"valid map access into an array with a signed variable",
|
|
.insns = {
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 9),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0),
|
|
BPF_JMP_IMM(BPF_JSGT, BPF_REG_1, 0xffffffff, 1),
|
|
BPF_MOV32_IMM(BPF_REG_1, 0),
|
|
BPF_MOV32_IMM(BPF_REG_2, MAX_ENTRIES),
|
|
BPF_JMP_REG(BPF_JSGT, BPF_REG_2, BPF_REG_1, 1),
|
|
BPF_MOV32_IMM(BPF_REG_1, 0),
|
|
BPF_ALU32_IMM(BPF_LSH, BPF_REG_1, 2),
|
|
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_0, 0,
|
|
offsetof(struct test_val, foo)),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map2 = { 3 },
|
|
.errstr_unpriv = "R0 pointer arithmetic prohibited",
|
|
.result_unpriv = REJECT,
|
|
.result = ACCEPT,
|
|
},
|
|
{
|
|
"invalid map access into an array with a constant",
|
|
.insns = {
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_0, (MAX_ENTRIES + 1) << 2,
|
|
offsetof(struct test_val, foo)),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map2 = { 3 },
|
|
.errstr = "invalid access to map value, value_size=48 off=48 size=8",
|
|
.result = REJECT,
|
|
},
|
|
{
|
|
"invalid map access into an array with a register",
|
|
.insns = {
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4),
|
|
BPF_MOV64_IMM(BPF_REG_1, MAX_ENTRIES + 1),
|
|
BPF_ALU64_IMM(BPF_LSH, BPF_REG_1, 2),
|
|
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_0, 0,
|
|
offsetof(struct test_val, foo)),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map2 = { 3 },
|
|
.errstr_unpriv = "R0 pointer arithmetic prohibited",
|
|
.errstr = "R0 min value is outside of the array range",
|
|
.result_unpriv = REJECT,
|
|
.result = REJECT,
|
|
},
|
|
{
|
|
"invalid map access into an array with a variable",
|
|
.insns = {
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0),
|
|
BPF_ALU64_IMM(BPF_LSH, BPF_REG_1, 2),
|
|
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_0, 0,
|
|
offsetof(struct test_val, foo)),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map2 = { 3 },
|
|
.errstr_unpriv = "R0 pointer arithmetic prohibited",
|
|
.errstr = "R0 min value is negative, either use unsigned index or do a if (index >=0) check.",
|
|
.result_unpriv = REJECT,
|
|
.result = REJECT,
|
|
},
|
|
{
|
|
"invalid map access into an array with no floor check",
|
|
.insns = {
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 7),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0),
|
|
BPF_MOV32_IMM(BPF_REG_2, MAX_ENTRIES),
|
|
BPF_JMP_REG(BPF_JSGT, BPF_REG_2, BPF_REG_1, 1),
|
|
BPF_MOV32_IMM(BPF_REG_1, 0),
|
|
BPF_ALU32_IMM(BPF_LSH, BPF_REG_1, 2),
|
|
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_0, 0,
|
|
offsetof(struct test_val, foo)),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map2 = { 3 },
|
|
.errstr_unpriv = "R0 pointer arithmetic prohibited",
|
|
.errstr = "R0 min value is negative, either use unsigned index or do a if (index >=0) check.",
|
|
.result_unpriv = REJECT,
|
|
.result = REJECT,
|
|
},
|
|
{
|
|
"invalid map access into an array with a invalid max check",
|
|
.insns = {
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 7),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0),
|
|
BPF_MOV32_IMM(BPF_REG_2, MAX_ENTRIES + 1),
|
|
BPF_JMP_REG(BPF_JGT, BPF_REG_2, BPF_REG_1, 1),
|
|
BPF_MOV32_IMM(BPF_REG_1, 0),
|
|
BPF_ALU32_IMM(BPF_LSH, BPF_REG_1, 2),
|
|
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_0, 0,
|
|
offsetof(struct test_val, foo)),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map2 = { 3 },
|
|
.errstr_unpriv = "R0 pointer arithmetic prohibited",
|
|
.errstr = "invalid access to map value, value_size=48 off=44 size=8",
|
|
.result_unpriv = REJECT,
|
|
.result = REJECT,
|
|
},
|
|
{
|
|
"invalid map access into an array with a invalid max check",
|
|
.insns = {
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 10),
|
|
BPF_MOV64_REG(BPF_REG_8, BPF_REG_0),
|
|
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
|
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
|
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
|
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
|
BPF_FUNC_map_lookup_elem),
|
|
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2),
|
|
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_8),
|
|
BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0,
|
|
offsetof(struct test_val, foo)),
|
|
BPF_EXIT_INSN(),
|
|
},
|
|
.fixup_map2 = { 3, 11 },
|
|
.errstr_unpriv = "R0 pointer arithmetic prohibited",
|
|
.errstr = "R0 min value is negative, either use unsigned index or do a if (index >=0) check.",
|
|
.result_unpriv = REJECT,
|
|
.result = REJECT,
|
|
},
|
|
};
|
|
|
|
static int probe_filter_length(const struct bpf_insn *fp)
|
|
{
|
|
int len;
|
|
|
|
for (len = MAX_INSNS - 1; len > 0; --len)
|
|
if (fp[len].code != 0 || fp[len].imm != 0)
|
|
break;
|
|
return len + 1;
|
|
}
|
|
|
|
static int create_map(uint32_t size_value, uint32_t max_elem)
|
|
{
|
|
int fd;
|
|
|
|
fd = bpf_map_create(BPF_MAP_TYPE_HASH, sizeof(long long),
|
|
size_value, max_elem, BPF_F_NO_PREALLOC);
|
|
if (fd < 0)
|
|
printf("Failed to create hash map '%s'!\n", strerror(errno));
|
|
|
|
return fd;
|
|
}
|
|
|
|
static int create_prog_array(void)
|
|
{
|
|
int fd;
|
|
|
|
fd = bpf_map_create(BPF_MAP_TYPE_PROG_ARRAY, sizeof(int),
|
|
sizeof(int), 4, 0);
|
|
if (fd < 0)
|
|
printf("Failed to create prog array '%s'!\n", strerror(errno));
|
|
|
|
return fd;
|
|
}
|
|
|
|
static char bpf_vlog[32768];
|
|
|
|
static void do_test_fixup(struct bpf_test *test, struct bpf_insn *prog,
|
|
int *fd_f1, int *fd_f2, int *fd_f3)
|
|
{
|
|
int *fixup_map1 = test->fixup_map1;
|
|
int *fixup_map2 = test->fixup_map2;
|
|
int *fixup_prog = test->fixup_prog;
|
|
|
|
/* Allocating HTs with 1 elem is fine here, since we only test
|
|
* for verifier and not do a runtime lookup, so the only thing
|
|
* that really matters is value size in this case.
|
|
*/
|
|
if (*fixup_map1) {
|
|
*fd_f1 = create_map(sizeof(long long), 1);
|
|
do {
|
|
prog[*fixup_map1].imm = *fd_f1;
|
|
fixup_map1++;
|
|
} while (*fixup_map1);
|
|
}
|
|
|
|
if (*fixup_map2) {
|
|
*fd_f2 = create_map(sizeof(struct test_val), 1);
|
|
do {
|
|
prog[*fixup_map2].imm = *fd_f2;
|
|
fixup_map2++;
|
|
} while (*fixup_map2);
|
|
}
|
|
|
|
if (*fixup_prog) {
|
|
*fd_f3 = create_prog_array();
|
|
do {
|
|
prog[*fixup_prog].imm = *fd_f3;
|
|
fixup_prog++;
|
|
} while (*fixup_prog);
|
|
}
|
|
}
|
|
|
|
static void do_test_single(struct bpf_test *test, bool unpriv,
|
|
int *passes, int *errors)
|
|
{
|
|
struct bpf_insn *prog = test->insns;
|
|
int prog_len = probe_filter_length(prog);
|
|
int prog_type = test->prog_type;
|
|
int fd_f1 = -1, fd_f2 = -1, fd_f3 = -1;
|
|
int fd_prog, expected_ret;
|
|
const char *expected_err;
|
|
|
|
do_test_fixup(test, prog, &fd_f1, &fd_f2, &fd_f3);
|
|
|
|
fd_prog = bpf_prog_load(prog_type ? : BPF_PROG_TYPE_SOCKET_FILTER,
|
|
prog, prog_len * sizeof(struct bpf_insn),
|
|
"GPL", bpf_vlog, sizeof(bpf_vlog));
|
|
|
|
expected_ret = unpriv && test->result_unpriv != UNDEF ?
|
|
test->result_unpriv : test->result;
|
|
expected_err = unpriv && test->errstr_unpriv ?
|
|
test->errstr_unpriv : test->errstr;
|
|
if (expected_ret == ACCEPT) {
|
|
if (fd_prog < 0) {
|
|
printf("FAIL\nFailed to load prog '%s'!\n",
|
|
strerror(errno));
|
|
goto fail_log;
|
|
}
|
|
} else {
|
|
if (fd_prog >= 0) {
|
|
printf("FAIL\nUnexpected success to load!\n");
|
|
goto fail_log;
|
|
}
|
|
if (!strstr(bpf_vlog, expected_err)) {
|
|
printf("FAIL\nUnexpected error message!\n");
|
|
goto fail_log;
|
|
}
|
|
}
|
|
|
|
(*passes)++;
|
|
printf("OK\n");
|
|
close_fds:
|
|
close(fd_prog);
|
|
close(fd_f1);
|
|
close(fd_f2);
|
|
close(fd_f3);
|
|
sched_yield();
|
|
return;
|
|
fail_log:
|
|
(*errors)++;
|
|
printf("%s", bpf_vlog);
|
|
goto close_fds;
|
|
}
|
|
|
|
static int do_test(bool unpriv, unsigned int from, unsigned int to)
|
|
{
|
|
int i, passes = 0, errors = 0;
|
|
|
|
for (i = from; i < to; i++) {
|
|
struct bpf_test *test = &tests[i];
|
|
|
|
/* Program types that are not supported by non-root we
|
|
* skip right away.
|
|
*/
|
|
if (unpriv && test->prog_type)
|
|
continue;
|
|
|
|
printf("#%d %s ", i, test->descr);
|
|
do_test_single(test, unpriv, &passes, &errors);
|
|
}
|
|
|
|
printf("Summary: %d PASSED, %d FAILED\n", passes, errors);
|
|
return errors ? -errors : 0;
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
struct rlimit rinf = { RLIM_INFINITY, RLIM_INFINITY };
|
|
struct rlimit rlim = { 1 << 20, 1 << 20 };
|
|
unsigned int from = 0, to = ARRAY_SIZE(tests);
|
|
bool unpriv = geteuid() != 0;
|
|
|
|
if (argc == 3) {
|
|
unsigned int l = atoi(argv[argc - 2]);
|
|
unsigned int u = atoi(argv[argc - 1]);
|
|
|
|
if (l < to && u < to) {
|
|
from = l;
|
|
to = u + 1;
|
|
}
|
|
} else if (argc == 2) {
|
|
unsigned int t = atoi(argv[argc - 1]);
|
|
|
|
if (t < to) {
|
|
from = t;
|
|
to = t + 1;
|
|
}
|
|
}
|
|
|
|
setrlimit(RLIMIT_MEMLOCK, unpriv ? &rlim : &rinf);
|
|
return do_test(unpriv, from, to);
|
|
}
|