125 lines
3.1 KiB
C
125 lines
3.1 KiB
C
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{
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"check deducing bounds from const, 1",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 1),
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BPF_JMP_IMM(BPF_JSGE, BPF_REG_0, 1, 0),
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BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_1),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr = "R0 tried to subtract pointer from scalar",
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},
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{
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"check deducing bounds from const, 2",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 1),
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BPF_JMP_IMM(BPF_JSGE, BPF_REG_0, 1, 1),
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BPF_EXIT_INSN(),
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BPF_JMP_IMM(BPF_JSLE, BPF_REG_0, 1, 1),
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BPF_EXIT_INSN(),
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BPF_ALU64_REG(BPF_SUB, BPF_REG_1, BPF_REG_0),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.retval = 1,
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},
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{
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"check deducing bounds from const, 3",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_JMP_IMM(BPF_JSLE, BPF_REG_0, 0, 0),
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BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_1),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr = "R0 tried to subtract pointer from scalar",
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},
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{
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"check deducing bounds from const, 4",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_JMP_IMM(BPF_JSLE, BPF_REG_0, 0, 1),
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BPF_EXIT_INSN(),
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BPF_JMP_IMM(BPF_JSGE, BPF_REG_0, 0, 1),
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BPF_EXIT_INSN(),
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BPF_ALU64_REG(BPF_SUB, BPF_REG_1, BPF_REG_0),
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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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"check deducing bounds from const, 5",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_JMP_IMM(BPF_JSGE, BPF_REG_0, 1, 1),
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BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_1),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr = "R0 tried to subtract pointer from scalar",
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},
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{
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"check deducing bounds from const, 6",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_JMP_IMM(BPF_JSGE, BPF_REG_0, 0, 1),
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BPF_EXIT_INSN(),
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BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_1),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr = "R0 tried to subtract pointer from scalar",
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},
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{
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"check deducing bounds from const, 7",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, ~0),
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BPF_JMP_IMM(BPF_JSGE, BPF_REG_0, 0, 0),
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BPF_ALU64_REG(BPF_SUB, BPF_REG_1, BPF_REG_0),
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BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
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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 = REJECT,
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.errstr = "dereference of modified ctx ptr",
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.flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
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},
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{
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"check deducing bounds from const, 8",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, ~0),
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BPF_JMP_IMM(BPF_JSGE, BPF_REG_0, 0, 1),
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BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_0),
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BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
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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 = REJECT,
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.errstr = "dereference of modified ctx ptr",
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.flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
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},
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{
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"check deducing bounds from const, 9",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_JMP_IMM(BPF_JSGE, BPF_REG_0, 0, 0),
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BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_1),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr = "R0 tried to subtract pointer from scalar",
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},
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{
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"check deducing bounds from const, 10",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_JMP_IMM(BPF_JSLE, BPF_REG_0, 0, 0),
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/* Marks reg as unknown. */
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BPF_ALU64_IMM(BPF_NEG, BPF_REG_0, 0),
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BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_1),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr = "math between ctx pointer and register with unbounded min value is not allowed",
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},
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