linux/tools/testing/selftests/bpf/verifier/direct_stack_access_wraparound.c
Jakub Kicinski 40f2fbd5a5 selftests: bpf: break up test_verifier
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>
2019-01-27 21:37:45 -08:00

41 lines
1.1 KiB
C

{
"direct stack access with 32-bit wraparound. test1",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0x7fffffff),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0x7fffffff),
BPF_MOV32_IMM(BPF_REG_0, 0),
BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.errstr = "fp pointer and 2147483647",
.result = REJECT
},
{
"direct stack access with 32-bit wraparound. test2",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0x3fffffff),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0x3fffffff),
BPF_MOV32_IMM(BPF_REG_0, 0),
BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.errstr = "fp pointer and 1073741823",
.result = REJECT
},
{
"direct stack access with 32-bit wraparound. test3",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0x1fffffff),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0x1fffffff),
BPF_MOV32_IMM(BPF_REG_0, 0),
BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.errstr = "fp pointer offset 1073741822",
.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
.result = REJECT
},