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https://github.com/Fishwaldo/Star64_linux.git
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40f2fbd5a5
Break up the first 10 kLoC of test verifier test cases out into smaller files. Looks like git line counting gets a little flismy above 16 bit integers, so we need two commits to break up test_verifier. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Acked-by: Jiong Wang <jiong.wang@netronome.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
104 lines
2.3 KiB
C
104 lines
2.3 KiB
C
/* Just make sure that JITs used udiv/umod as otherwise we get
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* an exception from INT_MIN/-1 overflow similarly as with div
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* by zero.
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*/
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{
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"DIV32 overflow, check 1",
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.insns = {
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BPF_MOV32_IMM(BPF_REG_1, -1),
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BPF_MOV32_IMM(BPF_REG_0, INT_MIN),
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BPF_ALU32_REG(BPF_DIV, BPF_REG_0, BPF_REG_1),
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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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.result = ACCEPT,
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.retval = 0,
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},
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{
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"DIV32 overflow, check 2",
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.insns = {
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BPF_MOV32_IMM(BPF_REG_0, INT_MIN),
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BPF_ALU32_IMM(BPF_DIV, BPF_REG_0, -1),
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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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.result = ACCEPT,
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.retval = 0,
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},
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{
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"DIV64 overflow, check 1",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_1, -1),
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BPF_LD_IMM64(BPF_REG_0, LLONG_MIN),
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BPF_ALU64_REG(BPF_DIV, BPF_REG_0, BPF_REG_1),
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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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.result = ACCEPT,
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.retval = 0,
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},
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{
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"DIV64 overflow, check 2",
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.insns = {
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BPF_LD_IMM64(BPF_REG_0, LLONG_MIN),
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BPF_ALU64_IMM(BPF_DIV, BPF_REG_0, -1),
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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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.result = ACCEPT,
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.retval = 0,
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},
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{
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"MOD32 overflow, check 1",
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.insns = {
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BPF_MOV32_IMM(BPF_REG_1, -1),
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BPF_MOV32_IMM(BPF_REG_0, INT_MIN),
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BPF_ALU32_REG(BPF_MOD, BPF_REG_0, BPF_REG_1),
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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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.result = ACCEPT,
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.retval = INT_MIN,
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},
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{
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"MOD32 overflow, check 2",
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.insns = {
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BPF_MOV32_IMM(BPF_REG_0, INT_MIN),
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BPF_ALU32_IMM(BPF_MOD, BPF_REG_0, -1),
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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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.result = ACCEPT,
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.retval = INT_MIN,
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},
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{
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"MOD64 overflow, check 1",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_1, -1),
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BPF_LD_IMM64(BPF_REG_2, LLONG_MIN),
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BPF_MOV64_REG(BPF_REG_3, BPF_REG_2),
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BPF_ALU64_REG(BPF_MOD, BPF_REG_2, BPF_REG_1),
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BPF_MOV32_IMM(BPF_REG_0, 0),
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BPF_JMP_REG(BPF_JNE, BPF_REG_3, BPF_REG_2, 1),
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BPF_MOV32_IMM(BPF_REG_0, 1),
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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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.result = ACCEPT,
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.retval = 1,
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},
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{
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"MOD64 overflow, check 2",
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.insns = {
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BPF_LD_IMM64(BPF_REG_2, LLONG_MIN),
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BPF_MOV64_REG(BPF_REG_3, BPF_REG_2),
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BPF_ALU64_IMM(BPF_MOD, BPF_REG_2, -1),
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BPF_MOV32_IMM(BPF_REG_0, 0),
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BPF_JMP_REG(BPF_JNE, BPF_REG_3, BPF_REG_2, 1),
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BPF_MOV32_IMM(BPF_REG_0, 1),
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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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.result = ACCEPT,
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.retval = 1,
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},
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