| { |
| "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=inv(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), |
| BPF_EXIT_INSN(), |
| }, |
| .prog_type = BPF_PROG_TYPE_TRACEPOINT, |
| .fixup_map_array_48b = { 1 }, |
| .result = VERBOSE_ACCEPT, |
| .errstr = |
| "26: (85) call bpf_probe_read#4\ |
| 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=inv(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), |
| 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#4\ |
| 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, |
| }, |
