379 lines
12 KiB
C
379 lines
12 KiB
C
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{
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"valid map access into an array with a constant",
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.insns = {
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BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
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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, BPF_FUNC_map_lookup_elem),
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1),
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BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, offsetof(struct test_val, foo)),
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BPF_EXIT_INSN(),
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},
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.fixup_map_hash_48b = { 3 },
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.errstr_unpriv = "R0 leaks addr",
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.result_unpriv = REJECT,
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.result = ACCEPT,
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},
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{
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"valid map access into an array with a register",
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.insns = {
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BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
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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, BPF_FUNC_map_lookup_elem),
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4),
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BPF_MOV64_IMM(BPF_REG_1, 4),
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BPF_ALU64_IMM(BPF_LSH, BPF_REG_1, 2),
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BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
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BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, offsetof(struct test_val, foo)),
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BPF_EXIT_INSN(),
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},
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.fixup_map_hash_48b = { 3 },
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.errstr_unpriv = "R0 leaks addr",
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.result_unpriv = REJECT,
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.result = ACCEPT,
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.flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
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},
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{
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"valid map access into an array with a variable",
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.insns = {
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BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
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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, BPF_FUNC_map_lookup_elem),
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 5),
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BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0),
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BPF_JMP_IMM(BPF_JGE, BPF_REG_1, MAX_ENTRIES, 3),
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BPF_ALU64_IMM(BPF_LSH, BPF_REG_1, 2),
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BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
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BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, offsetof(struct test_val, foo)),
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BPF_EXIT_INSN(),
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},
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.fixup_map_hash_48b = { 3 },
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.errstr_unpriv = "R0 leaks addr",
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.result_unpriv = REJECT,
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.result = ACCEPT,
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.flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
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},
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{
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"valid map access into an array with a signed variable",
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.insns = {
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BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
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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, BPF_FUNC_map_lookup_elem),
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 9),
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BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0),
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BPF_JMP_IMM(BPF_JSGT, BPF_REG_1, 0xffffffff, 1),
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BPF_MOV32_IMM(BPF_REG_1, 0),
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BPF_MOV32_IMM(BPF_REG_2, MAX_ENTRIES),
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BPF_JMP_REG(BPF_JSGT, BPF_REG_2, BPF_REG_1, 1),
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BPF_MOV32_IMM(BPF_REG_1, 0),
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BPF_ALU32_IMM(BPF_LSH, BPF_REG_1, 2),
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BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
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BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, offsetof(struct test_val, foo)),
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BPF_EXIT_INSN(),
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},
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.fixup_map_hash_48b = { 3 },
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.errstr_unpriv = "R0 leaks addr",
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.result_unpriv = REJECT,
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.result = ACCEPT,
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.flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
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},
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{
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"invalid map access into an array with a constant",
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.insns = {
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BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
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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, BPF_FUNC_map_lookup_elem),
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1),
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BPF_ST_MEM(BPF_DW, BPF_REG_0, (MAX_ENTRIES + 1) << 2,
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offsetof(struct test_val, foo)),
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BPF_EXIT_INSN(),
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},
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.fixup_map_hash_48b = { 3 },
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.errstr = "invalid access to map value, value_size=48 off=48 size=8",
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.result = REJECT,
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},
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{
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"invalid map access into an array with a register",
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.insns = {
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BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
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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, BPF_FUNC_map_lookup_elem),
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4),
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BPF_MOV64_IMM(BPF_REG_1, MAX_ENTRIES + 1),
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BPF_ALU64_IMM(BPF_LSH, BPF_REG_1, 2),
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BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
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BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, offsetof(struct test_val, foo)),
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BPF_EXIT_INSN(),
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},
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.fixup_map_hash_48b = { 3 },
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.errstr = "R0 min value is outside of the array range",
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.result = REJECT,
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.flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
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},
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{
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"invalid map access into an array with a variable",
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.insns = {
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BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
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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, BPF_FUNC_map_lookup_elem),
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4),
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BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0),
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BPF_ALU64_IMM(BPF_LSH, BPF_REG_1, 2),
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BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
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BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, offsetof(struct test_val, foo)),
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BPF_EXIT_INSN(),
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},
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.fixup_map_hash_48b = { 3 },
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.errstr = "R0 unbounded memory access, make sure to bounds check any array access into a map",
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.result = REJECT,
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.flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
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},
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{
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"invalid map access into an array with no floor check",
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.insns = {
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BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
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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, BPF_FUNC_map_lookup_elem),
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 7),
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BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0, 0),
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BPF_MOV32_IMM(BPF_REG_2, MAX_ENTRIES),
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BPF_JMP_REG(BPF_JSGT, BPF_REG_2, BPF_REG_1, 1),
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BPF_MOV32_IMM(BPF_REG_1, 0),
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BPF_ALU32_IMM(BPF_LSH, BPF_REG_1, 2),
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BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
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BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, offsetof(struct test_val, foo)),
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BPF_EXIT_INSN(),
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},
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.fixup_map_hash_48b = { 3 },
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.errstr_unpriv = "R0 leaks addr",
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.errstr = "R0 unbounded memory access",
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.result_unpriv = REJECT,
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.result = REJECT,
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.flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
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},
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{
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"invalid map access into an array with a invalid max check",
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.insns = {
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BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
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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, BPF_FUNC_map_lookup_elem),
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 7),
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BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0),
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BPF_MOV32_IMM(BPF_REG_2, MAX_ENTRIES + 1),
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BPF_JMP_REG(BPF_JGT, BPF_REG_2, BPF_REG_1, 1),
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BPF_MOV32_IMM(BPF_REG_1, 0),
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BPF_ALU32_IMM(BPF_LSH, BPF_REG_1, 2),
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BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
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BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, offsetof(struct test_val, foo)),
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BPF_EXIT_INSN(),
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},
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.fixup_map_hash_48b = { 3 },
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.errstr_unpriv = "R0 leaks addr",
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.errstr = "invalid access to map value, value_size=48 off=44 size=8",
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.result_unpriv = REJECT,
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.result = REJECT,
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.flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
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},
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{
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"invalid map access into an array with a invalid max check",
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.insns = {
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BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
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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, BPF_FUNC_map_lookup_elem),
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 10),
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BPF_MOV64_REG(BPF_REG_8, BPF_REG_0),
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BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
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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, BPF_FUNC_map_lookup_elem),
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2),
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BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_8),
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BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0,
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offsetof(struct test_val, foo)),
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BPF_EXIT_INSN(),
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},
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.fixup_map_hash_48b = { 3, 11 },
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.errstr = "R0 pointer += pointer",
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.result = REJECT,
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.flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
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},
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{
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"valid read map access into a read-only array 1",
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.insns = {
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BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
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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, BPF_FUNC_map_lookup_elem),
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1),
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BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.fixup_map_array_ro = { 3 },
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.result = ACCEPT,
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.retval = 28,
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},
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{
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"valid read map access into a read-only array 2",
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.insns = {
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BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
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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, BPF_FUNC_map_lookup_elem),
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 6),
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
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BPF_MOV64_IMM(BPF_REG_2, 4),
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BPF_MOV64_IMM(BPF_REG_3, 0),
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BPF_MOV64_IMM(BPF_REG_4, 0),
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BPF_MOV64_IMM(BPF_REG_5, 0),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
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BPF_FUNC_csum_diff),
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BPF_EXIT_INSN(),
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},
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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.fixup_map_array_ro = { 3 },
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.result = ACCEPT,
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.retval = -29,
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},
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{
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"invalid write map access into a read-only array 1",
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.insns = {
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BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
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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, BPF_FUNC_map_lookup_elem),
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BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 1),
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BPF_ST_MEM(BPF_DW, BPF_REG_0, 0, 42),
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BPF_EXIT_INSN(),
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},
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.fixup_map_array_ro = { 3 },
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.result = REJECT,
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.errstr = "write into map forbidden",
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},
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{
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||
|
|
"invalid write map access into a read-only array 2",
|
||
|
|
.insns = {
|
||
|
|
BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
|
||
|
|
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_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||
|
|
BPF_MOV64_IMM(BPF_REG_2, 0),
|
||
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_0),
|
||
|
|
BPF_MOV64_IMM(BPF_REG_4, 8),
|
||
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
||
|
|
BPF_FUNC_skb_load_bytes),
|
||
|
|
BPF_EXIT_INSN(),
|
||
|
|
},
|
||
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||
|
|
.fixup_map_array_ro = { 4 },
|
||
|
|
.result = REJECT,
|
||
|
|
.errstr = "write into map forbidden",
|
||
|
|
},
|
||
|
|
{
|
||
|
|
"valid write map access into a write-only array 1",
|
||
|
|
.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, 42),
|
||
|
|
BPF_MOV64_IMM(BPF_REG_0, 1),
|
||
|
|
BPF_EXIT_INSN(),
|
||
|
|
},
|
||
|
|
.fixup_map_array_wo = { 3 },
|
||
|
|
.result = ACCEPT,
|
||
|
|
.retval = 1,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
"valid write map access into a write-only array 2",
|
||
|
|
.insns = {
|
||
|
|
BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
|
||
|
|
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_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||
|
|
BPF_MOV64_IMM(BPF_REG_2, 0),
|
||
|
|
BPF_MOV64_REG(BPF_REG_3, BPF_REG_0),
|
||
|
|
BPF_MOV64_IMM(BPF_REG_4, 8),
|
||
|
|
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
||
|
|
BPF_FUNC_skb_load_bytes),
|
||
|
|
BPF_EXIT_INSN(),
|
||
|
|
},
|
||
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||
|
|
.fixup_map_array_wo = { 4 },
|
||
|
|
.result = ACCEPT,
|
||
|
|
.retval = 0,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
"invalid read map access into a write-only array 1",
|
||
|
|
.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_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_0, 0),
|
||
|
|
BPF_EXIT_INSN(),
|
||
|
|
},
|
||
|
|
.fixup_map_array_wo = { 3 },
|
||
|
|
.result = REJECT,
|
||
|
|
.errstr = "read from map forbidden",
|
||
|
|
},
|
||
|
|
{
|
||
|
|
"invalid read map access into a write-only array 2",
|
||
|
|
.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, 6),
|
||
|
|
|
||
|
|
BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
|
||
|
|
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_EXIT_INSN(),
|
||
|
|
},
|
||
|
|
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||
|
|
.fixup_map_array_wo = { 3 },
|
||
|
|
.result = REJECT,
|
||
|
|
.errstr = "read from map forbidden",
|
||
|
|
},
|