bpf: add test cases for direct packet access
Add couple of test cases for direct write and the negative size issue, and also adjust the direct packet access test4 since it asserts that writes are not possible, but since we've just added support for writes, we need to invert the verdict to ACCEPT, of course. Summary: 133 PASSED, 0 FAILED. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Borkmann
David S. Miller
Родитель
36bbef52c7
Коммит
7d95b0ab5b
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@ -290,6 +290,29 @@ static struct bpf_test tests[] = {
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.errstr = "invalid read from stack",
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.result = REJECT,
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},
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{
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"invalid argument register",
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.insns = {
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_cgroup_classid),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_cgroup_classid),
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BPF_EXIT_INSN(),
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},
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.errstr = "R1 !read_ok",
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.result = REJECT,
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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},
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{
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"non-invalid argument register",
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.insns = {
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BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_1),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_cgroup_classid),
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BPF_ALU64_REG(BPF_MOV, BPF_REG_1, BPF_REG_6),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_cgroup_classid),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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},
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{
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"check valid spill/fill",
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.insns = {
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@ -1209,6 +1232,54 @@ static struct bpf_test tests[] = {
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.errstr = "invalid read from stack off -8+0 size 8",
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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},
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{
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"raw_stack: skb_load_bytes, negative len",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_2, 4),
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BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
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BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
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BPF_MOV64_IMM(BPF_REG_4, -8),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes),
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BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr = "invalid stack type R3",
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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},
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{
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"raw_stack: skb_load_bytes, negative len 2",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_2, 4),
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BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
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BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
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BPF_MOV64_IMM(BPF_REG_4, ~0),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes),
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BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr = "invalid stack type R3",
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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},
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{
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"raw_stack: skb_load_bytes, zero len",
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.insns = {
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BPF_MOV64_IMM(BPF_REG_2, 4),
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BPF_ALU64_REG(BPF_MOV, BPF_REG_6, BPF_REG_10),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, -8),
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BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
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BPF_MOV64_IMM(BPF_REG_4, 0),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes),
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BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_6, 0),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr = "invalid stack type R3",
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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},
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{
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"raw_stack: skb_load_bytes, no init",
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.insns = {
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@ -1511,7 +1582,7 @@ static struct bpf_test tests[] = {
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.prog_type = BPF_PROG_TYPE_SOCKET_FILTER,
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},
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{
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"direct packet access: test4",
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"direct packet access: test4 (write)",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
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offsetof(struct __sk_buff, data)),
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@ -1524,8 +1595,7 @@ static struct bpf_test tests[] = {
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.errstr = "cannot write",
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.result = REJECT,
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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},
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{
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@ -1630,6 +1700,26 @@ static struct bpf_test tests[] = {
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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},
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{
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"direct packet access: test10 (write invalid)",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
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offsetof(struct __sk_buff, data)),
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BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
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offsetof(struct __sk_buff, data_end)),
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BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
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BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 2),
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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BPF_STX_MEM(BPF_B, BPF_REG_2, BPF_REG_2, 0),
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.errstr = "invalid access to packet",
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.result = REJECT,
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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},
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{
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"helper access to packet: test1, valid packet_ptr range",
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.insns = {
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@ -1736,6 +1826,343 @@ static struct bpf_test tests[] = {
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.errstr = "invalid access to packet",
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.prog_type = BPF_PROG_TYPE_XDP,
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},
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{
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"helper access to packet: test6, cls valid packet_ptr range",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
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offsetof(struct __sk_buff, data)),
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BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
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offsetof(struct __sk_buff, data_end)),
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
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BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_3, 5),
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BPF_LD_MAP_FD(BPF_REG_1, 0),
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BPF_MOV64_REG(BPF_REG_3, BPF_REG_2),
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BPF_MOV64_IMM(BPF_REG_4, 0),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_update_elem),
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.fixup = {5},
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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},
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{
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"helper access to packet: test7, cls unchecked packet_ptr",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
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offsetof(struct __sk_buff, data)),
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BPF_LD_MAP_FD(BPF_REG_1, 0),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.fixup = {1},
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.result = REJECT,
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.errstr = "invalid access to packet",
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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},
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{
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"helper access to packet: test8, cls variable add",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
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offsetof(struct __sk_buff, data)),
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BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
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offsetof(struct __sk_buff, data_end)),
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BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 8),
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BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 10),
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BPF_LDX_MEM(BPF_B, BPF_REG_5, BPF_REG_2, 0),
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BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
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BPF_ALU64_REG(BPF_ADD, BPF_REG_4, BPF_REG_5),
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BPF_MOV64_REG(BPF_REG_5, BPF_REG_4),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_5, 8),
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BPF_JMP_REG(BPF_JGT, BPF_REG_5, BPF_REG_3, 4),
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BPF_LD_MAP_FD(BPF_REG_1, 0),
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BPF_MOV64_REG(BPF_REG_2, BPF_REG_4),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.fixup = {11},
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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},
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{
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"helper access to packet: test9, cls packet_ptr with bad range",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
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offsetof(struct __sk_buff, data)),
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BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
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offsetof(struct __sk_buff, data_end)),
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BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 4),
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BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 2),
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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BPF_LD_MAP_FD(BPF_REG_1, 0),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.fixup = {7},
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.result = REJECT,
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.errstr = "invalid access to packet",
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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},
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{
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"helper access to packet: test10, cls packet_ptr with too short range",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
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offsetof(struct __sk_buff, data)),
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BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
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offsetof(struct __sk_buff, data_end)),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 1),
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BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 7),
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BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 3),
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BPF_LD_MAP_FD(BPF_REG_1, 0),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.fixup = {6},
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.result = REJECT,
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.errstr = "invalid access to packet",
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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},
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{
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"helper access to packet: test11, cls unsuitable helper 1",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
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offsetof(struct __sk_buff, data)),
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BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
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offsetof(struct __sk_buff, data_end)),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
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BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_3, 7),
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BPF_JMP_REG(BPF_JGT, BPF_REG_3, BPF_REG_7, 4),
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BPF_MOV64_IMM(BPF_REG_2, 0),
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BPF_MOV64_IMM(BPF_REG_4, 42),
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BPF_MOV64_IMM(BPF_REG_5, 0),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_store_bytes),
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr = "helper access to the packet",
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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},
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{
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"helper access to packet: test12, cls unsuitable helper 2",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
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offsetof(struct __sk_buff, data)),
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BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
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offsetof(struct __sk_buff, data_end)),
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BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 8),
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BPF_JMP_REG(BPF_JGT, BPF_REG_6, BPF_REG_7, 3),
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BPF_MOV64_IMM(BPF_REG_2, 0),
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BPF_MOV64_IMM(BPF_REG_4, 4),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes),
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr = "helper access to the packet",
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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},
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{
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"helper access to packet: test13, cls helper ok",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
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offsetof(struct __sk_buff, data)),
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BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
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offsetof(struct __sk_buff, data_end)),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
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BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
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BPF_MOV64_IMM(BPF_REG_2, 4),
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BPF_MOV64_IMM(BPF_REG_3, 0),
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BPF_MOV64_IMM(BPF_REG_4, 0),
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BPF_MOV64_IMM(BPF_REG_5, 0),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.result = ACCEPT,
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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},
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{
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"helper access to packet: test14, cls helper fail sub",
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.insns = {
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BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
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offsetof(struct __sk_buff, data)),
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BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
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offsetof(struct __sk_buff, data_end)),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
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BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
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BPF_ALU64_IMM(BPF_SUB, BPF_REG_1, 4),
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BPF_MOV64_IMM(BPF_REG_2, 4),
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BPF_MOV64_IMM(BPF_REG_3, 0),
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BPF_MOV64_IMM(BPF_REG_4, 0),
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BPF_MOV64_IMM(BPF_REG_5, 0),
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BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
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BPF_MOV64_IMM(BPF_REG_0, 0),
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BPF_EXIT_INSN(),
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},
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.result = REJECT,
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.errstr = "type=inv expected=fp",
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.prog_type = BPF_PROG_TYPE_SCHED_CLS,
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},
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{
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"helper access to packet: test15, cls helper fail range 1",
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||||
.insns = {
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||||
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
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offsetof(struct __sk_buff, data)),
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BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
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offsetof(struct __sk_buff, data_end)),
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||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
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BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
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BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
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BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
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BPF_MOV64_IMM(BPF_REG_2, 8),
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BPF_MOV64_IMM(BPF_REG_3, 0),
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BPF_MOV64_IMM(BPF_REG_4, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_5, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.result = REJECT,
|
||||
.errstr = "invalid access to packet",
|
||||
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test16, cls helper fail range 2",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data_end)),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||||
BPF_MOV64_IMM(BPF_REG_2, -9),
|
||||
BPF_MOV64_IMM(BPF_REG_3, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_4, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_5, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.result = REJECT,
|
||||
.errstr = "invalid access to packet",
|
||||
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test17, cls helper fail range 3",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data_end)),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||||
BPF_MOV64_IMM(BPF_REG_2, ~0),
|
||||
BPF_MOV64_IMM(BPF_REG_3, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_4, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_5, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.result = REJECT,
|
||||
.errstr = "invalid access to packet",
|
||||
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test18, cls helper fail range zero",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data_end)),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||||
BPF_MOV64_IMM(BPF_REG_2, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_3, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_4, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_5, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.result = REJECT,
|
||||
.errstr = "invalid access to packet",
|
||||
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test19, pkt end as input",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data_end)),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_7),
|
||||
BPF_MOV64_IMM(BPF_REG_2, 4),
|
||||
BPF_MOV64_IMM(BPF_REG_3, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_4, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_5, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.result = REJECT,
|
||||
.errstr = "R1 type=pkt_end expected=fp",
|
||||
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||||
},
|
||||
{
|
||||
"helper access to packet: test20, wrong reg",
|
||||
.insns = {
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data)),
|
||||
BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
|
||||
offsetof(struct __sk_buff, data_end)),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
|
||||
BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
|
||||
BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
|
||||
BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
|
||||
BPF_MOV64_IMM(BPF_REG_2, 4),
|
||||
BPF_MOV64_IMM(BPF_REG_3, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_4, 0),
|
||||
BPF_MOV64_IMM(BPF_REG_5, 0),
|
||||
BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
|
||||
BPF_MOV64_IMM(BPF_REG_0, 0),
|
||||
BPF_EXIT_INSN(),
|
||||
},
|
||||
.result = REJECT,
|
||||
.errstr = "invalid access to packet",
|
||||
.prog_type = BPF_PROG_TYPE_SCHED_CLS,
|
||||
},
|
||||
};
|
||||
|
||||
static int probe_filter_length(struct bpf_insn *fp)
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче