linux_dsm_epyc7002/tools/testing/selftests/bpf/verifier/stack_ptr.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

318 lines
8.1 KiB
C

{
"PTR_TO_STACK store/load",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -10),
BPF_ST_MEM(BPF_DW, BPF_REG_1, 2, 0xfaceb00c),
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 2),
BPF_EXIT_INSN(),
},
.result = ACCEPT,
.retval = 0xfaceb00c,
},
{
"PTR_TO_STACK store/load - bad alignment on off",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8),
BPF_ST_MEM(BPF_DW, BPF_REG_1, 2, 0xfaceb00c),
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 2),
BPF_EXIT_INSN(),
},
.result = REJECT,
.errstr = "misaligned stack access off (0x0; 0x0)+-8+2 size 8",
},
{
"PTR_TO_STACK store/load - bad alignment on reg",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -10),
BPF_ST_MEM(BPF_DW, BPF_REG_1, 8, 0xfaceb00c),
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 8),
BPF_EXIT_INSN(),
},
.result = REJECT,
.errstr = "misaligned stack access off (0x0; 0x0)+-10+8 size 8",
},
{
"PTR_TO_STACK store/load - out of bounds low",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -80000),
BPF_ST_MEM(BPF_DW, BPF_REG_1, 8, 0xfaceb00c),
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 8),
BPF_EXIT_INSN(),
},
.result = REJECT,
.errstr = "invalid stack off=-79992 size=8",
.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
},
{
"PTR_TO_STACK store/load - out of bounds high",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8),
BPF_ST_MEM(BPF_DW, BPF_REG_1, 8, 0xfaceb00c),
BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, 8),
BPF_EXIT_INSN(),
},
.result = REJECT,
.errstr = "invalid stack off=0 size=8",
},
{
"PTR_TO_STACK check high 1",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -1),
BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
BPF_EXIT_INSN(),
},
.result = ACCEPT,
.retval = 42,
},
{
"PTR_TO_STACK check high 2",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ST_MEM(BPF_B, BPF_REG_1, -1, 42),
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, -1),
BPF_EXIT_INSN(),
},
.result = ACCEPT,
.retval = 42,
},
{
"PTR_TO_STACK check high 3",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0),
BPF_ST_MEM(BPF_B, BPF_REG_1, -1, 42),
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, -1),
BPF_EXIT_INSN(),
},
.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
.result_unpriv = REJECT,
.result = ACCEPT,
.retval = 42,
},
{
"PTR_TO_STACK check high 4",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 0),
BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
BPF_EXIT_INSN(),
},
.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
.errstr = "invalid stack off=0 size=1",
.result = REJECT,
},
{
"PTR_TO_STACK check high 5",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, (1 << 29) - 1),
BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
BPF_EXIT_INSN(),
},
.result = REJECT,
.errstr = "invalid stack off",
},
{
"PTR_TO_STACK check high 6",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, (1 << 29) - 1),
BPF_ST_MEM(BPF_B, BPF_REG_1, SHRT_MAX, 42),
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, SHRT_MAX),
BPF_EXIT_INSN(),
},
.result = REJECT,
.errstr = "invalid stack off",
},
{
"PTR_TO_STACK check high 7",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, (1 << 29) - 1),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, (1 << 29) - 1),
BPF_ST_MEM(BPF_B, BPF_REG_1, SHRT_MAX, 42),
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, SHRT_MAX),
BPF_EXIT_INSN(),
},
.result = REJECT,
.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
.errstr = "fp pointer offset",
},
{
"PTR_TO_STACK check low 1",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -512),
BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
BPF_EXIT_INSN(),
},
.result = ACCEPT,
.retval = 42,
},
{
"PTR_TO_STACK check low 2",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -513),
BPF_ST_MEM(BPF_B, BPF_REG_1, 1, 42),
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 1),
BPF_EXIT_INSN(),
},
.result_unpriv = REJECT,
.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
.result = ACCEPT,
.retval = 42,
},
{
"PTR_TO_STACK check low 3",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -513),
BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
BPF_EXIT_INSN(),
},
.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
.errstr = "invalid stack off=-513 size=1",
.result = REJECT,
},
{
"PTR_TO_STACK check low 4",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, INT_MIN),
BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
BPF_EXIT_INSN(),
},
.result = REJECT,
.errstr = "math between fp pointer",
},
{
"PTR_TO_STACK check low 5",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -((1 << 29) - 1)),
BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
BPF_EXIT_INSN(),
},
.result = REJECT,
.errstr = "invalid stack off",
},
{
"PTR_TO_STACK check low 6",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -((1 << 29) - 1)),
BPF_ST_MEM(BPF_B, BPF_REG_1, SHRT_MIN, 42),
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, SHRT_MIN),
BPF_EXIT_INSN(),
},
.result = REJECT,
.errstr = "invalid stack off",
},
{
"PTR_TO_STACK check low 7",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -((1 << 29) - 1)),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -((1 << 29) - 1)),
BPF_ST_MEM(BPF_B, BPF_REG_1, SHRT_MIN, 42),
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, SHRT_MIN),
BPF_EXIT_INSN(),
},
.result = REJECT,
.errstr_unpriv = "R1 stack pointer arithmetic goes out of range",
.errstr = "fp pointer offset",
},
{
"PTR_TO_STACK mixed reg/k, 1",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -3),
BPF_MOV64_IMM(BPF_REG_2, -3),
BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_2),
BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
BPF_EXIT_INSN(),
},
.result = ACCEPT,
.retval = 42,
},
{
"PTR_TO_STACK mixed reg/k, 2",
.insns = {
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
BPF_ST_MEM(BPF_DW, BPF_REG_10, -16, 0),
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -3),
BPF_MOV64_IMM(BPF_REG_2, -3),
BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_2),
BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
BPF_MOV64_REG(BPF_REG_5, BPF_REG_10),
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_5, -6),
BPF_EXIT_INSN(),
},
.result = ACCEPT,
.retval = 42,
},
{
"PTR_TO_STACK mixed reg/k, 3",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -3),
BPF_MOV64_IMM(BPF_REG_2, -3),
BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_2),
BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
BPF_EXIT_INSN(),
},
.result = ACCEPT,
.retval = -3,
},
{
"PTR_TO_STACK reg",
.insns = {
BPF_MOV64_REG(BPF_REG_1, BPF_REG_10),
BPF_MOV64_IMM(BPF_REG_2, -3),
BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_2),
BPF_ST_MEM(BPF_B, BPF_REG_1, 0, 42),
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
BPF_EXIT_INSN(),
},
.result_unpriv = REJECT,
.errstr_unpriv = "invalid stack off=0 size=1",
.result = ACCEPT,
.retval = 42,
},
{
"stack pointer arithmetic",
.insns = {
BPF_MOV64_IMM(BPF_REG_1, 4),
BPF_JMP_IMM(BPF_JA, 0, 0, 0),
BPF_MOV64_REG(BPF_REG_7, BPF_REG_10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_7, -10),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_7, -10),
BPF_MOV64_REG(BPF_REG_2, BPF_REG_7),
BPF_ALU64_REG(BPF_ADD, BPF_REG_2, BPF_REG_1),
BPF_ST_MEM(0, BPF_REG_2, 4, 0),
BPF_MOV64_REG(BPF_REG_2, BPF_REG_7),
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 8),
BPF_ST_MEM(0, BPF_REG_2, 4, 0),
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
.result = ACCEPT,
},