bpf: add various test cases to test_verifier
Add some more map related test cases to test_verifier kselftest to improve test coverage. Summary: 1012 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
parent
4d31f30148
commit
2683f4128c
|
@ -6454,6 +6454,256 @@ static struct bpf_test tests[] = {
|
|||
.errstr = "R1 min value is negative",
|
||||
.prog_type = BPF_PROG_TYPE_TRACEPOINT,
|
||||
},
|
||||
{
|
||||
"map access: known scalar += value_ptr",
|
||||
.insns = {
|
||||
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
||||
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
||||
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
||||
BPF_FUNC_map_lookup_elem),
|
||||
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3),
|
||||
BPF_MOV64_IMM(BPF_REG_1, 4),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_0),
|
||||
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 1),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_array_48b = { 3 },
|
||||
.result = ACCEPT,
|
||||
.retval = 1,
|
||||
},
|
||||
{
|
||||
"map access: value_ptr += known scalar",
|
||||
.insns = {
|
||||
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
||||
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
||||
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
||||
BPF_FUNC_map_lookup_elem),
|
||||
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3),
|
||||
BPF_MOV64_IMM(BPF_REG_1, 4),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
|
||||
BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 1),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_array_48b = { 3 },
|
||||
.result = ACCEPT,
|
||||
.retval = 1,
|
||||
},
|
||||
{
|
||||
"map access: unknown scalar += value_ptr",
|
||||
.insns = {
|
||||
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
||||
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
||||
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
||||
BPF_FUNC_map_lookup_elem),
|
||||
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4),
|
||||
BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
|
||||
BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0xf),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_0),
|
||||
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 1),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_array_48b = { 3 },
|
||||
.result = ACCEPT,
|
||||
.retval = 1,
|
||||
},
|
||||
{
|
||||
"map access: value_ptr += unknown scalar",
|
||||
.insns = {
|
||||
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
||||
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
||||
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
||||
BPF_FUNC_map_lookup_elem),
|
||||
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4),
|
||||
BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
|
||||
BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0xf),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
|
||||
BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 1),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_array_48b = { 3 },
|
||||
.result = ACCEPT,
|
||||
.retval = 1,
|
||||
},
|
||||
{
|
||||
"map access: value_ptr += value_ptr",
|
||||
.insns = {
|
||||
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
||||
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
||||
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
||||
BPF_FUNC_map_lookup_elem),
|
||||
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_0),
|
||||
BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 1),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_array_48b = { 3 },
|
||||
.result = REJECT,
|
||||
.errstr = "R0 pointer += pointer prohibited",
|
||||
},
|
||||
{
|
||||
"map access: known scalar -= value_ptr",
|
||||
.insns = {
|
||||
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
||||
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
||||
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
||||
BPF_FUNC_map_lookup_elem),
|
||||
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3),
|
||||
BPF_MOV64_IMM(BPF_REG_1, 4),
|
||||
BPF_ALU64_REG(BPF_SUB, BPF_REG_1, BPF_REG_0),
|
||||
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 1),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_array_48b = { 3 },
|
||||
.result = REJECT,
|
||||
.errstr = "R1 tried to subtract pointer from scalar",
|
||||
},
|
||||
{
|
||||
"map access: value_ptr -= known scalar",
|
||||
.insns = {
|
||||
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
||||
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
||||
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
||||
BPF_FUNC_map_lookup_elem),
|
||||
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3),
|
||||
BPF_MOV64_IMM(BPF_REG_1, 4),
|
||||
BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_1),
|
||||
BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 1),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_array_48b = { 3 },
|
||||
.result = REJECT,
|
||||
.errstr = "R0 min value is outside of the array range",
|
||||
},
|
||||
{
|
||||
"map access: value_ptr -= known scalar, 2",
|
||||
.insns = {
|
||||
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
||||
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
||||
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
||||
BPF_FUNC_map_lookup_elem),
|
||||
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 5),
|
||||
BPF_MOV64_IMM(BPF_REG_1, 6),
|
||||
BPF_MOV64_IMM(BPF_REG_2, 4),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
|
||||
BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_2),
|
||||
BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 1),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_array_48b = { 3 },
|
||||
.result = ACCEPT,
|
||||
.retval = 1,
|
||||
},
|
||||
{
|
||||
"map access: unknown scalar -= value_ptr",
|
||||
.insns = {
|
||||
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
||||
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
||||
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
||||
BPF_FUNC_map_lookup_elem),
|
||||
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4),
|
||||
BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
|
||||
BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0xf),
|
||||
BPF_ALU64_REG(BPF_SUB, BPF_REG_1, BPF_REG_0),
|
||||
BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 1),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_array_48b = { 3 },
|
||||
.result = REJECT,
|
||||
.errstr = "R1 tried to subtract pointer from scalar",
|
||||
},
|
||||
{
|
||||
"map access: value_ptr -= unknown scalar",
|
||||
.insns = {
|
||||
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
||||
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
||||
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
||||
BPF_FUNC_map_lookup_elem),
|
||||
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4),
|
||||
BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
|
||||
BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0xf),
|
||||
BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_1),
|
||||
BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 1),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_array_48b = { 3 },
|
||||
.result = REJECT,
|
||||
.errstr = "R0 min value is negative",
|
||||
},
|
||||
{
|
||||
"map access: value_ptr -= unknown scalar, 2",
|
||||
.insns = {
|
||||
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
||||
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
||||
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
||||
BPF_FUNC_map_lookup_elem),
|
||||
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 8),
|
||||
BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
|
||||
BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0xf),
|
||||
BPF_ALU64_IMM(BPF_OR, BPF_REG_1, 0x7),
|
||||
BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
|
||||
BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
|
||||
BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0x7),
|
||||
BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_1),
|
||||
BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 1),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_array_48b = { 3 },
|
||||
.result = ACCEPT,
|
||||
.retval = 1,
|
||||
},
|
||||
{
|
||||
"map access: value_ptr -= value_ptr",
|
||||
.insns = {
|
||||
BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
|
||||
BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
|
||||
BPF_LD_MAP_FD(BPF_REG_1, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0,
|
||||
BPF_FUNC_map_lookup_elem),
|
||||
BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2),
|
||||
BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_0),
|
||||
BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 1),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.fixup_map_array_48b = { 3 },
|
||||
.result = REJECT,
|
||||
.errstr = "R0 invalid mem access 'inv'",
|
||||
.errstr_unpriv = "R0 pointer -= pointer prohibited",
|
||||
},
|
||||
{
|
||||
"map lookup helper access to map",
|
||||
.insns = {
|
||||
|
|
Loading…
Reference in a new issue