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| {
| "map in map access",
| .insns = {
| BPF_ST_MEM(0, BPF_REG_10, -4, 0),
| BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
| 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_ST_MEM(0, BPF_REG_10, -4, 0),
| BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_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_map_in_map = { 3 },
| .result = ACCEPT,
| },
| {
| "invalid inner map pointer",
| .insns = {
| BPF_ST_MEM(0, BPF_REG_10, -4, 0),
| BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
| 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, 6),
| BPF_ST_MEM(0, BPF_REG_10, -4, 0),
| BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
| 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_map_in_map = { 3 },
| .errstr = "R1 pointer arithmetic on map_ptr prohibited",
| .result = REJECT,
| },
| {
| "forgot null checking on the inner map pointer",
| .insns = {
| BPF_ST_MEM(0, BPF_REG_10, -4, 0),
| BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
| 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(0, BPF_REG_10, -4, 0),
| BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
| BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -4),
| BPF_MOV64_REG(BPF_REG_1, BPF_REG_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_map_in_map = { 3 },
| .errstr = "R1 type=map_value_or_null expected=map_ptr",
| .result = REJECT,
| },
|
|
