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-rw-r--r--tools/testing/selftests/bpf/test_verifier.c56
1 files changed, 29 insertions, 27 deletions
diff --git a/tools/testing/selftests/bpf/test_verifier.c b/tools/testing/selftests/bpf/test_verifier.c
index 961c1426fbf2..b51017404c62 100644
--- a/tools/testing/selftests/bpf/test_verifier.c
+++ b/tools/testing/selftests/bpf/test_verifier.c
@@ -422,9 +422,7 @@ static struct bpf_test tests[] = {
BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
- .errstr_unpriv = "R1 subtraction from stack pointer",
- .result_unpriv = REJECT,
- .errstr = "R1 invalid mem access",
+ .errstr = "R1 subtraction from stack pointer",
.result = REJECT,
},
{
@@ -1859,9 +1857,8 @@ static struct bpf_test tests[] = {
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
- .result = ACCEPT,
- .result_unpriv = REJECT,
- .errstr_unpriv = "R1 pointer += pointer",
+ .result = REJECT,
+ .errstr = "R1 pointer += pointer",
},
{
"unpriv: neg pointer",
@@ -2589,7 +2586,8 @@ static struct bpf_test tests[] = {
BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
offsetof(struct __sk_buff, data)),
BPF_ALU64_REG(BPF_ADD, BPF_REG_3, BPF_REG_4),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_1),
+ BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+ offsetof(struct __sk_buff, len)),
BPF_ALU64_IMM(BPF_LSH, BPF_REG_2, 49),
BPF_ALU64_IMM(BPF_RSH, BPF_REG_2, 49),
BPF_ALU64_REG(BPF_ADD, BPF_REG_3, BPF_REG_2),
@@ -2896,7 +2894,7 @@ static struct bpf_test tests[] = {
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
- .errstr = "invalid access to packet",
+ .errstr = "R3 pointer arithmetic on PTR_TO_PACKET_END",
.result = REJECT,
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
},
@@ -3882,9 +3880,7 @@ static struct bpf_test tests[] = {
BPF_EXIT_INSN(),
},
.fixup_map2 = { 3, 11 },
- .errstr_unpriv = "R0 pointer += pointer",
- .errstr = "R0 invalid mem access 'inv'",
- .result_unpriv = REJECT,
+ .errstr = "R0 pointer += pointer",
.result = REJECT,
.flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
@@ -3925,7 +3921,7 @@ static struct bpf_test tests[] = {
BPF_EXIT_INSN(),
},
.fixup_map1 = { 4 },
- .errstr = "R4 invalid mem access",
+ .errstr = "R4 pointer arithmetic on PTR_TO_MAP_VALUE_OR_NULL",
.result = REJECT,
.prog_type = BPF_PROG_TYPE_SCHED_CLS
},
@@ -3946,7 +3942,7 @@ static struct bpf_test tests[] = {
BPF_EXIT_INSN(),
},
.fixup_map1 = { 4 },
- .errstr = "R4 invalid mem access",
+ .errstr = "R4 pointer arithmetic on PTR_TO_MAP_VALUE_OR_NULL",
.result = REJECT,
.prog_type = BPF_PROG_TYPE_SCHED_CLS
},
@@ -3967,7 +3963,7 @@ static struct bpf_test tests[] = {
BPF_EXIT_INSN(),
},
.fixup_map1 = { 4 },
- .errstr = "R4 invalid mem access",
+ .errstr = "R4 pointer arithmetic on PTR_TO_MAP_VALUE_OR_NULL",
.result = REJECT,
.prog_type = BPF_PROG_TYPE_SCHED_CLS
},
@@ -5192,10 +5188,8 @@ static struct bpf_test tests[] = {
BPF_EXIT_INSN(),
},
.fixup_map2 = { 3 },
- .errstr_unpriv = "R0 bitwise operator &= on pointer",
- .errstr = "invalid mem access 'inv'",
+ .errstr = "R0 bitwise operator &= on pointer",
.result = REJECT,
- .result_unpriv = REJECT,
},
{
"map element value illegal alu op, 2",
@@ -5211,10 +5205,8 @@ static struct bpf_test tests[] = {
BPF_EXIT_INSN(),
},
.fixup_map2 = { 3 },
- .errstr_unpriv = "R0 32-bit pointer arithmetic prohibited",
- .errstr = "invalid mem access 'inv'",
+ .errstr = "R0 32-bit pointer arithmetic prohibited",
.result = REJECT,
- .result_unpriv = REJECT,
},
{
"map element value illegal alu op, 3",
@@ -5230,10 +5222,8 @@ static struct bpf_test tests[] = {
BPF_EXIT_INSN(),
},
.fixup_map2 = { 3 },
- .errstr_unpriv = "R0 pointer arithmetic with /= operator",
- .errstr = "invalid mem access 'inv'",
+ .errstr = "R0 pointer arithmetic with /= operator",
.result = REJECT,
- .result_unpriv = REJECT,
},
{
"map element value illegal alu op, 4",
@@ -6016,8 +6006,7 @@ static struct bpf_test tests[] = {
BPF_EXIT_INSN(),
},
.fixup_map_in_map = { 3 },
- .errstr = "R1 type=inv expected=map_ptr",
- .errstr_unpriv = "R1 pointer arithmetic on CONST_PTR_TO_MAP prohibited",
+ .errstr = "R1 pointer arithmetic on CONST_PTR_TO_MAP prohibited",
.result = REJECT,
},
{
@@ -7645,6 +7634,19 @@ static struct bpf_test tests[] = {
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
},
{
+ "pkt_end - pkt_start is allowed",
+ .insns = {
+ BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
+ offsetof(struct __sk_buff, data_end)),
+ BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+ offsetof(struct __sk_buff, data)),
+ BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_2),
+ BPF_EXIT_INSN(),
+ },
+ .result = ACCEPT,
+ .prog_type = BPF_PROG_TYPE_SCHED_CLS,
+ },
+ {
"XDP pkt read, pkt_end mangling, bad access 1",
.insns = {
BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
@@ -7659,7 +7661,7 @@ static struct bpf_test tests[] = {
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
- .errstr = "R1 offset is outside of the packet",
+ .errstr = "R3 pointer arithmetic on PTR_TO_PACKET_END",
.result = REJECT,
.prog_type = BPF_PROG_TYPE_XDP,
},
@@ -7678,7 +7680,7 @@ static struct bpf_test tests[] = {
BPF_MOV64_IMM(BPF_REG_0, 0),
BPF_EXIT_INSN(),
},
- .errstr = "R1 offset is outside of the packet",
+ .errstr = "R3 pointer arithmetic on PTR_TO_PACKET_END",
.result = REJECT,
.prog_type = BPF_PROG_TYPE_XDP,
},