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{ "precise: test 1", .insns = { BPF_MOV64_IMM(BPF_REG_0, 1), BPF_LD_MAP_FD(BPF_REG_6, 0), BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), BPF_MOV64_REG(BPF_REG_2, BPF_REG_FP), BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), BPF_ST_MEM(BPF_DW, BPF_REG_FP, -8, 0), BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem), BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), BPF_EXIT_INSN(), BPF_MOV64_REG(BPF_REG_9, BPF_REG_0), BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), BPF_MOV64_REG(BPF_REG_2, BPF_REG_FP), BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem), BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), BPF_EXIT_INSN(), BPF_MOV64_REG(BPF_REG_8, BPF_REG_0), BPF_ALU64_REG(BPF_SUB, BPF_REG_9, BPF_REG_8), /* map_value_ptr -= map_value_ptr */ BPF_MOV64_REG(BPF_REG_2, BPF_REG_9), BPF_JMP_IMM(BPF_JLT, BPF_REG_2, 8, 1), BPF_EXIT_INSN(), BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 1), /* R2=scalar(umin=1, umax=8) */ BPF_MOV64_REG(BPF_REG_1, BPF_REG_FP), BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8), BPF_MOV64_IMM(BPF_REG_3, 0), BPF_EMIT_CALL(BPF_FUNC_probe_read_kernel), BPF_EXIT_INSN(), }, .prog_type = BPF_PROG_TYPE_TRACEPOINT, .fixup_map_array_48b = { 1 }, .result = VERBOSE_ACCEPT, .errstr = "26: (85) call bpf_probe_read_kernel#113\ last_idx 26 first_idx 20\ regs=4 stack=0 before 25\ regs=4 stack=0 before 24\ regs=4 stack=0 before 23\ regs=4 stack=0 before 22\ regs=4 stack=0 before 20\ parent didn't have regs=4 stack=0 marks\ last_idx 19 first_idx 10\ regs=4 stack=0 before 19\ regs=200 stack=0 before 18\ regs=300 stack=0 before 17\ regs=201 stack=0 before 15\ regs=201 stack=0 before 14\ regs=200 stack=0 before 13\ regs=200 stack=0 before 12\ regs=200 stack=0 before 11\ regs=200 stack=0 before 10\ parent already had regs=0 stack=0 marks", }, { "precise: test 2", .insns = { BPF_MOV64_IMM(BPF_REG_0, 1), BPF_LD_MAP_FD(BPF_REG_6, 0), BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), BPF_MOV64_REG(BPF_REG_2, BPF_REG_FP), BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), BPF_ST_MEM(BPF_DW, BPF_REG_FP, -8, 0), BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem), BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), BPF_EXIT_INSN(), BPF_MOV64_REG(BPF_REG_9, BPF_REG_0), BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), BPF_MOV64_REG(BPF_REG_2, BPF_REG_FP), BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem), BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), BPF_EXIT_INSN(), BPF_MOV64_REG(BPF_REG_8, BPF_REG_0), BPF_ALU64_REG(BPF_SUB, BPF_REG_9, BPF_REG_8), /* map_value_ptr -= map_value_ptr */ BPF_MOV64_REG(BPF_REG_2, BPF_REG_9), BPF_JMP_IMM(BPF_JLT, BPF_REG_2, 8, 1), BPF_EXIT_INSN(), BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 1), /* R2=scalar(umin=1, umax=8) */ BPF_MOV64_REG(BPF_REG_1, BPF_REG_FP), BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8), BPF_MOV64_IMM(BPF_REG_3, 0), BPF_EMIT_CALL(BPF_FUNC_probe_read_kernel), BPF_EXIT_INSN(), }, .prog_type = BPF_PROG_TYPE_TRACEPOINT, .fixup_map_array_48b = { 1 }, .result = VERBOSE_ACCEPT, .flags = BPF_F_TEST_STATE_FREQ, .errstr = "26: (85) call bpf_probe_read_kernel#113\ last_idx 26 first_idx 22\ regs=4 stack=0 before 25\ regs=4 stack=0 before 24\ regs=4 stack=0 before 23\ regs=4 stack=0 before 22\ parent didn't have regs=4 stack=0 marks\ last_idx 20 first_idx 20\ regs=4 stack=0 before 20\ parent didn't have regs=4 stack=0 marks\ last_idx 19 first_idx 17\ regs=4 stack=0 before 19\ regs=200 stack=0 before 18\ regs=300 stack=0 before 17\ parent already had regs=0 stack=0 marks", }, { "precise: cross frame pruning", .insns = { BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32), BPF_MOV64_IMM(BPF_REG_8, 0), BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), BPF_MOV64_IMM(BPF_REG_8, 1), BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32), BPF_MOV64_IMM(BPF_REG_9, 0), BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), BPF_MOV64_IMM(BPF_REG_9, 1), BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 4), BPF_JMP_IMM(BPF_JEQ, BPF_REG_8, 1, 1), BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_2, 0), BPF_MOV64_IMM(BPF_REG_0, 0), BPF_EXIT_INSN(), BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 0), BPF_EXIT_INSN(), }, .prog_type = BPF_PROG_TYPE_XDP, .flags = BPF_F_TEST_STATE_FREQ, .errstr = "!read_ok", .result = REJECT, }, { "precise: ST insn causing spi > allocated_stack", .insns = { BPF_MOV64_REG(BPF_REG_3, BPF_REG_10), BPF_JMP_IMM(BPF_JNE, BPF_REG_3, 123, 0), BPF_ST_MEM(BPF_DW, BPF_REG_3, -8, 0), BPF_LDX_MEM(BPF_DW, BPF_REG_4, BPF_REG_10, -8), BPF_MOV64_IMM(BPF_REG_0, -1), BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_0, 0), BPF_EXIT_INSN(), }, .prog_type = BPF_PROG_TYPE_XDP, .flags = BPF_F_TEST_STATE_FREQ, .errstr = "5: (2d) if r4 > r0 goto pc+0\ last_idx 5 first_idx 5\ parent didn't have regs=10 stack=0 marks\ last_idx 4 first_idx 2\ regs=10 stack=0 before 4\ regs=10 stack=0 before 3\ regs=0 stack=1 before 2\ last_idx 5 first_idx 5\ parent didn't have regs=1 stack=0 marks", .result = VERBOSE_ACCEPT, .retval = -1, }, { "precise: STX insn causing spi > allocated_stack", .insns = { BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32), BPF_MOV64_REG(BPF_REG_3, BPF_REG_10), BPF_JMP_IMM(BPF_JNE, BPF_REG_3, 123, 0), BPF_STX_MEM(BPF_DW, BPF_REG_3, BPF_REG_0, -8), BPF_LDX_MEM(BPF_DW, BPF_REG_4, BPF_REG_10, -8), BPF_MOV64_IMM(BPF_REG_0, -1), BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_0, 0), BPF_EXIT_INSN(), }, .prog_type = BPF_PROG_TYPE_XDP, .flags = BPF_F_TEST_STATE_FREQ, .errstr = "last_idx 6 first_idx 6\ parent didn't have regs=10 stack=0 marks\ last_idx 5 first_idx 3\ regs=10 stack=0 before 5\ regs=10 stack=0 before 4\ regs=0 stack=1 before 3\ last_idx 6 first_idx 6\ parent didn't have regs=1 stack=0 marks\ last_idx 5 first_idx 3\ regs=1 stack=0 before 5", .result = VERBOSE_ACCEPT, .retval = -1, }, { "precise: mark_chain_precision for ARG_CONST_ALLOC_SIZE_OR_ZERO", .insns = { BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_1, offsetof(struct xdp_md, ingress_ifindex)), BPF_LD_MAP_FD(BPF_REG_6, 0), BPF_MOV64_REG(BPF_REG_1, BPF_REG_6), BPF_MOV64_IMM(BPF_REG_2, 1), BPF_MOV64_IMM(BPF_REG_3, 0), BPF_JMP_IMM(BPF_JEQ, BPF_REG_4, 0, 1), BPF_MOV64_IMM(BPF_REG_2, 0x1000), BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_ringbuf_reserve), 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_DW, BPF_REG_2, BPF_REG_0, 42), BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_ringbuf_submit), BPF_MOV64_IMM(BPF_REG_0, 0), BPF_EXIT_INSN(), }, .fixup_map_ringbuf = { 1 }, .prog_type = BPF_PROG_TYPE_XDP, .flags = BPF_F_TEST_STATE_FREQ, .errstr = "invalid access to memory, mem_size=1 off=42 size=8", .result = REJECT, },
