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| /* Just make sure that JITs used udiv/umod as otherwise we get
| * an exception from INT_MIN/-1 overflow similarly as with div
| * by zero.
| */
| {
| "DIV32 overflow, check 1",
| .insns = {
| BPF_MOV32_IMM(BPF_REG_1, -1),
| BPF_MOV32_IMM(BPF_REG_0, INT_MIN),
| BPF_ALU32_REG(BPF_DIV, BPF_REG_0, BPF_REG_1),
| BPF_EXIT_INSN(),
| },
| .prog_type = BPF_PROG_TYPE_SCHED_CLS,
| .result = ACCEPT,
| .retval = 0,
| },
| {
| "DIV32 overflow, check 2",
| .insns = {
| BPF_MOV32_IMM(BPF_REG_0, INT_MIN),
| BPF_ALU32_IMM(BPF_DIV, BPF_REG_0, -1),
| BPF_EXIT_INSN(),
| },
| .prog_type = BPF_PROG_TYPE_SCHED_CLS,
| .result = ACCEPT,
| .retval = 0,
| },
| {
| "DIV64 overflow, check 1",
| .insns = {
| BPF_MOV64_IMM(BPF_REG_1, -1),
| BPF_LD_IMM64(BPF_REG_2, LLONG_MIN),
| BPF_ALU64_REG(BPF_DIV, BPF_REG_2, BPF_REG_1),
| BPF_MOV32_IMM(BPF_REG_0, 0),
| BPF_JMP_REG(BPF_JEQ, BPF_REG_0, BPF_REG_2, 1),
| BPF_MOV32_IMM(BPF_REG_0, 1),
| BPF_EXIT_INSN(),
| },
| .prog_type = BPF_PROG_TYPE_SCHED_CLS,
| .result = ACCEPT,
| .retval = 0,
| },
| {
| "DIV64 overflow, check 2",
| .insns = {
| BPF_LD_IMM64(BPF_REG_1, LLONG_MIN),
| BPF_ALU64_IMM(BPF_DIV, BPF_REG_1, -1),
| BPF_MOV32_IMM(BPF_REG_0, 0),
| BPF_JMP_REG(BPF_JEQ, BPF_REG_0, BPF_REG_1, 1),
| BPF_MOV32_IMM(BPF_REG_0, 1),
| BPF_EXIT_INSN(),
| },
| .prog_type = BPF_PROG_TYPE_SCHED_CLS,
| .result = ACCEPT,
| .retval = 0,
| },
| {
| "MOD32 overflow, check 1",
| .insns = {
| BPF_MOV32_IMM(BPF_REG_1, -1),
| BPF_MOV32_IMM(BPF_REG_0, INT_MIN),
| BPF_ALU32_REG(BPF_MOD, BPF_REG_0, BPF_REG_1),
| BPF_EXIT_INSN(),
| },
| .prog_type = BPF_PROG_TYPE_SCHED_CLS,
| .result = ACCEPT,
| .retval = INT_MIN,
| },
| {
| "MOD32 overflow, check 2",
| .insns = {
| BPF_MOV32_IMM(BPF_REG_0, INT_MIN),
| BPF_ALU32_IMM(BPF_MOD, BPF_REG_0, -1),
| BPF_EXIT_INSN(),
| },
| .prog_type = BPF_PROG_TYPE_SCHED_CLS,
| .result = ACCEPT,
| .retval = INT_MIN,
| },
| {
| "MOD64 overflow, check 1",
| .insns = {
| BPF_MOV64_IMM(BPF_REG_1, -1),
| BPF_LD_IMM64(BPF_REG_2, LLONG_MIN),
| BPF_MOV64_REG(BPF_REG_3, BPF_REG_2),
| BPF_ALU64_REG(BPF_MOD, BPF_REG_2, BPF_REG_1),
| BPF_MOV32_IMM(BPF_REG_0, 0),
| BPF_JMP_REG(BPF_JNE, BPF_REG_3, BPF_REG_2, 1),
| BPF_MOV32_IMM(BPF_REG_0, 1),
| BPF_EXIT_INSN(),
| },
| .prog_type = BPF_PROG_TYPE_SCHED_CLS,
| .result = ACCEPT,
| .retval = 1,
| },
| {
| "MOD64 overflow, check 2",
| .insns = {
| BPF_LD_IMM64(BPF_REG_2, LLONG_MIN),
| BPF_MOV64_REG(BPF_REG_3, BPF_REG_2),
| BPF_ALU64_IMM(BPF_MOD, BPF_REG_2, -1),
| BPF_MOV32_IMM(BPF_REG_0, 0),
| BPF_JMP_REG(BPF_JNE, BPF_REG_3, BPF_REG_2, 1),
| BPF_MOV32_IMM(BPF_REG_0, 1),
| BPF_EXIT_INSN(),
| },
| .prog_type = BPF_PROG_TYPE_SCHED_CLS,
| .result = ACCEPT,
| .retval = 1,
| },
|
|
