Quelle  ctx_skb.c   Sprache: C

{
 "access skb fields ok",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, len)),
 BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 1),
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, mark)),
 BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 1),
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, pkt_type)),
 BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 1),
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, queue_mapping)),
 BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 0),
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, protocol)),
 BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 0),
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, vlan_present)),
 BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 0),
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, vlan_tci)),
 BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 0),
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, napi_id)),
 BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 0),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
},
{
 "access skb fields bad1",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, -4),
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .result = REJECT,
},
{
 "access skb fields bad2",
 .insns = {
 BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 9),
 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_JNE, BPF_REG_0, 0, 1),
 BPF_EXIT_INSN(),
 BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, pkt_type)),
 BPF_EXIT_INSN(),
 },
 .fixup_map_hash_8b = { 4 },
 .errstr = "different pointers",
 .errstr_unpriv = "R1 pointer comparison",
 .result = REJECT,
},
{
 "access skb fields bad3",
 .insns = {
 BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 2),
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, pkt_type)),
 BPF_EXIT_INSN(),
 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_JNE, BPF_REG_0, 0, 1),
 BPF_EXIT_INSN(),
 BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
 BPF_JMP_IMM(BPF_JA, 0, 0, -12),
 },
 .fixup_map_hash_8b = { 6 },
 .errstr = "different pointers",
 .errstr_unpriv = "R1 pointer comparison",
 .result = REJECT,
},
{
 "access skb fields bad4",
 .insns = {
 BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 3),
 BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_1,
      offsetof(struct __sk_buff, len)),
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_EXIT_INSN(),
 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_JNE, BPF_REG_0, 0, 1),
 BPF_EXIT_INSN(),
 BPF_MOV64_REG(BPF_REG_1, BPF_REG_0),
 BPF_JMP_IMM(BPF_JA, 0, 0, -13),
 },
 .fixup_map_hash_8b = { 7 },
 .errstr = "different pointers",
 .errstr_unpriv = "R1 pointer comparison",
 .result = REJECT,
},
{
 "invalid access __sk_buff family",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, family)),
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .result = REJECT,
},
{
 "invalid access __sk_buff remote_ip4",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, remote_ip4)),
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .result = REJECT,
},
{
 "invalid access __sk_buff local_ip4",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, local_ip4)),
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .result = REJECT,
},
{
 "invalid access __sk_buff remote_ip6",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, remote_ip6)),
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .result = REJECT,
},
{
 "invalid access __sk_buff local_ip6",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, local_ip6)),
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .result = REJECT,
},
{
 "invalid access __sk_buff remote_port",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, remote_port)),
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .result = REJECT,
},
{
 "invalid access __sk_buff remote_port",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, local_port)),
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .result = REJECT,
},
{
 "valid access __sk_buff family",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, family)),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
 .prog_type = BPF_PROG_TYPE_SK_SKB,
},
{
 "valid access __sk_buff remote_ip4",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, remote_ip4)),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
 .prog_type = BPF_PROG_TYPE_SK_SKB,
},
{
 "valid access __sk_buff local_ip4",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, local_ip4)),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
 .prog_type = BPF_PROG_TYPE_SK_SKB,
},
{
 "valid access __sk_buff remote_ip6",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, remote_ip6[0])),
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, remote_ip6[1])),
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, remote_ip6[2])),
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, remote_ip6[3])),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
 .prog_type = BPF_PROG_TYPE_SK_SKB,
},
{
 "valid access __sk_buff local_ip6",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, local_ip6[0])),
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, local_ip6[1])),
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, local_ip6[2])),
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, local_ip6[3])),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
 .prog_type = BPF_PROG_TYPE_SK_SKB,
},
{
 "valid access __sk_buff remote_port",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, remote_port)),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
 .prog_type = BPF_PROG_TYPE_SK_SKB,
},
{
 "valid access __sk_buff remote_port",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, local_port)),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
 .prog_type = BPF_PROG_TYPE_SK_SKB,
},
{
 "invalid access of tc_classid for SK_SKB",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, tc_classid)),
 BPF_EXIT_INSN(),
 },
 .result = REJECT,
 .prog_type = BPF_PROG_TYPE_SK_SKB,
 .errstr = "invalid bpf_context access",
},
{
 "invalid access of skb->mark for SK_SKB",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, mark)),
 BPF_EXIT_INSN(),
 },
 .result =  REJECT,
 .prog_type = BPF_PROG_TYPE_SK_SKB,
 .errstr = "invalid bpf_context access",
},
{
 "check skb->mark is not writeable by SK_SKB",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, mark)),
 BPF_EXIT_INSN(),
 },
 .result =  REJECT,
 .prog_type = BPF_PROG_TYPE_SK_SKB,
 .errstr = "invalid bpf_context access",
},
{
 "check skb->tc_index is writeable by SK_SKB",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, tc_index)),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
 .prog_type = BPF_PROG_TYPE_SK_SKB,
},
{
 "check skb->priority is writeable by SK_SKB",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, priority)),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
 .prog_type = BPF_PROG_TYPE_SK_SKB,
},
{
 "direct packet read for SK_SKB",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
      offsetof(struct __sk_buff, data)),
 BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
      offsetof(struct __sk_buff, data_end)),
 BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
 BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
 BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_2, 0),
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
 .prog_type = BPF_PROG_TYPE_SK_SKB,
},
{
 "direct packet write for SK_SKB",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
      offsetof(struct __sk_buff, data)),
 BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
      offsetof(struct __sk_buff, data_end)),
 BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
 BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
 BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 1),
 BPF_STX_MEM(BPF_B, BPF_REG_2, BPF_REG_2, 0),
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
 .prog_type = BPF_PROG_TYPE_SK_SKB,
},
{
 "overlapping checks for direct packet access SK_SKB",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
      offsetof(struct __sk_buff, data)),
 BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
      offsetof(struct __sk_buff, data_end)),
 BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
 BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 8),
 BPF_JMP_REG(BPF_JGT, BPF_REG_0, BPF_REG_3, 4),
 BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 6),
 BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_3, 1),
 BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_2, 6),
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
 .prog_type = BPF_PROG_TYPE_SK_SKB,
},
{
 "check skb->mark is not writeable by sockets",
 .insns = {
 BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_1,
      offsetof(struct __sk_buff, mark)),
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .errstr_unpriv = "R1 leaks addr",
 .result = REJECT,
},
{
 "check skb->tc_index is not writeable by sockets",
 .insns = {
 BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_1,
      offsetof(struct __sk_buff, tc_index)),
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .errstr_unpriv = "R1 leaks addr",
 .result = REJECT,
},
{
 "check cb access: byte",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[0])),
 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[0]) + 1),
 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[0]) + 2),
 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[0]) + 3),
 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[1])),
 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[1]) + 1),
 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[1]) + 2),
 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[1]) + 3),
 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[2])),
 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[2]) + 1),
 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[2]) + 2),
 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[2]) + 3),
 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[3])),
 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[3]) + 1),
 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[3]) + 2),
 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[3]) + 3),
 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[4])),
 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[4]) + 1),
 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[4]) + 2),
 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[4]) + 3),
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[0])),
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[0]) + 1),
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[0]) + 2),
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[0]) + 3),
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[1])),
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[1]) + 1),
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[1]) + 2),
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[1]) + 3),
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[2])),
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[2]) + 1),
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[2]) + 2),
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[2]) + 3),
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[3])),
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[3]) + 1),
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[3]) + 2),
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[3]) + 3),
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[4])),
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[4]) + 1),
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[4]) + 2),
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[4]) + 3),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
},
{
 "__sk_buff->hash, offset 0, byte store not permitted",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, hash)),
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .result = REJECT,
},
{
 "__sk_buff->tc_index, offset 3, byte store not permitted",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, tc_index) + 3),
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .result = REJECT,
},
{
 "check skb->hash byte load permitted",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, hash)),
#else
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, hash) + 3),
#endif
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
},
{
 "check skb->hash byte load permitted 1",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, hash) + 1),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
},
{
 "check skb->hash byte load permitted 2",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, hash) + 2),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
},
{
 "check skb->hash byte load permitted 3",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, hash) + 3),
#else
 BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, hash)),
#endif
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
},
{
 "check cb access: byte, wrong type",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_B, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[0])),
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .result = REJECT,
 .prog_type = BPF_PROG_TYPE_CGROUP_SOCK,
},
{
 "check cb access: half",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_H, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[0])),
 BPF_STX_MEM(BPF_H, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[0]) + 2),
 BPF_STX_MEM(BPF_H, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[1])),
 BPF_STX_MEM(BPF_H, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[1]) + 2),
 BPF_STX_MEM(BPF_H, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[2])),
 BPF_STX_MEM(BPF_H, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[2]) + 2),
 BPF_STX_MEM(BPF_H, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[3])),
 BPF_STX_MEM(BPF_H, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[3]) + 2),
 BPF_STX_MEM(BPF_H, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[4])),
 BPF_STX_MEM(BPF_H, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[4]) + 2),
 BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[0])),
 BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[0]) + 2),
 BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[1])),
 BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[1]) + 2),
 BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[2])),
 BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[2]) + 2),
 BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[3])),
 BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[3]) + 2),
 BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[4])),
 BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[4]) + 2),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
},
{
 "check cb access: half, unaligned",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_H, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[0]) + 1),
 BPF_EXIT_INSN(),
 },
 .errstr = "misaligned context access",
 .result = REJECT,
 .flags = F_LOAD_WITH_STRICT_ALIGNMENT,
},
{
 "check __sk_buff->hash, offset 0, half store not permitted",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_H, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, hash)),
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .result = REJECT,
},
{
 "check __sk_buff->tc_index, offset 2, half store not permitted",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_H, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, tc_index) + 2),
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .result = REJECT,
},
{
 "check skb->hash half load permitted",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, hash)),
#else
 BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, hash) + 2),
#endif
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
},
{
 "check skb->hash half load permitted 2",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, hash) + 2),
#else
 BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, hash)),
#endif
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
},
{
 "check skb->hash half load not permitted, unaligned 1",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, hash) + 1),
#else
 BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, hash) + 3),
#endif
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .result = REJECT,
 .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
 "check skb->hash half load not permitted, unaligned 3",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, hash) + 3),
#else
 BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, hash) + 1),
#endif
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .result = REJECT,
 .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
 "check cb access: half, wrong type",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_H, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[0])),
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .result = REJECT,
 .prog_type = BPF_PROG_TYPE_CGROUP_SOCK,
},
{
 "check cb access: word",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[0])),
 BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[1])),
 BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[2])),
 BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[3])),
 BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[4])),
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[0])),
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[1])),
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[2])),
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[3])),
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[4])),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
},
{
 "check cb access: word, unaligned 1",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[0]) + 2),
 BPF_EXIT_INSN(),
 },
 .errstr = "misaligned context access",
 .result = REJECT,
 .flags = F_LOAD_WITH_STRICT_ALIGNMENT,
},
{
 "check cb access: word, unaligned 2",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[4]) + 1),
 BPF_EXIT_INSN(),
 },
 .errstr = "misaligned context access",
 .result = REJECT,
 .flags = F_LOAD_WITH_STRICT_ALIGNMENT,
},
{
 "check cb access: word, unaligned 3",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[4]) + 2),
 BPF_EXIT_INSN(),
 },
 .errstr = "misaligned context access",
 .result = REJECT,
 .flags = F_LOAD_WITH_STRICT_ALIGNMENT,
},
{
 "check cb access: word, unaligned 4",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[4]) + 3),
 BPF_EXIT_INSN(),
 },
 .errstr = "misaligned context access",
 .result = REJECT,
 .flags = F_LOAD_WITH_STRICT_ALIGNMENT,
},
{
 "check cb access: double",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[0])),
 BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[2])),
 BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[0])),
 BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[2])),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
},
{
 "check cb access: double, unaligned 1",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[1])),
 BPF_EXIT_INSN(),
 },
 .errstr = "misaligned context access",
 .result = REJECT,
 .flags = F_LOAD_WITH_STRICT_ALIGNMENT,
},
{
 "check cb access: double, unaligned 2",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[3])),
 BPF_EXIT_INSN(),
 },
 .errstr = "misaligned context access",
 .result = REJECT,
 .flags = F_LOAD_WITH_STRICT_ALIGNMENT,
},
{
 "check cb access: double, oob 1",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[4])),
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .result = REJECT,
},
{
 "check cb access: double, oob 2",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[4])),
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .result = REJECT,
},
{
 "check __sk_buff->ifindex dw store not permitted",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, ifindex)),
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .result = REJECT,
},
{
 "check __sk_buff->ifindex dw load not permitted",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, ifindex)),
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .result = REJECT,
},
{
 "check cb access: double, wrong type",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[0])),
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .result = REJECT,
 .prog_type = BPF_PROG_TYPE_CGROUP_SOCK,
},
{
 "check out of range skb->cb access",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[0]) + 256),
 BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .errstr_unpriv = "",
 .result = REJECT,
 .prog_type = BPF_PROG_TYPE_SCHED_ACT,
},
{
 "write skb fields from socket prog",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[4])),
 BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 1),
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, mark)),
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, tc_index)),
 BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 0, 1),
 BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_1,
      offsetof(struct __sk_buff, cb[0])),
 BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_1,
      offsetof(struct __sk_buff, cb[2])),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
 .errstr_unpriv = "R1 leaks addr",
 .result_unpriv = REJECT,
},
{
 "write skb fields from tc_cls_act prog",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, cb[0])),
 BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, mark)),
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, tc_index)),
 BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, tc_index)),
 BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, cb[3])),
 BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, tstamp)),
 BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, tstamp)),
 BPF_EXIT_INSN(),
 },
 .errstr_unpriv = "",
 .result_unpriv = REJECT,
 .result = ACCEPT,
 .prog_type = BPF_PROG_TYPE_SCHED_CLS,
},
{
 "check skb->data half load not permitted",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
 BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, data)),
#else
 BPF_LDX_MEM(BPF_H, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, data) + 2),
#endif
 BPF_EXIT_INSN(),
 },
 .result = REJECT,
 .errstr = "invalid bpf_context access",
},
{
 "read gso_segs from CGROUP_SKB",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, gso_segs)),
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
 .prog_type = BPF_PROG_TYPE_CGROUP_SKB,
},
{
 "read gso_segs from CGROUP_SKB",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_1,
      offsetof(struct __sk_buff, gso_segs)),
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
 .prog_type = BPF_PROG_TYPE_CGROUP_SKB,
},
{
 "write gso_segs from CGROUP_SKB",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, gso_segs)),
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_EXIT_INSN(),
 },
 .result = REJECT,
 .result_unpriv = REJECT,
 .errstr = "invalid bpf_context access off=164 size=4",
 .prog_type = BPF_PROG_TYPE_CGROUP_SKB,
},
{
 "read gso_segs from CLS",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, gso_segs)),
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
 .prog_type = BPF_PROG_TYPE_SCHED_CLS,
},
{
 "read gso_size from CGROUP_SKB",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, gso_size)),
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
 .prog_type = BPF_PROG_TYPE_CGROUP_SKB,
},
{
 "read gso_size from CGROUP_SKB",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_1,
      offsetof(struct __sk_buff, gso_size)),
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
 .prog_type = BPF_PROG_TYPE_CGROUP_SKB,
},
{
 "write gso_size from CGROUP_SKB",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, gso_size)),
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_EXIT_INSN(),
 },
 .result = REJECT,
 .result_unpriv = REJECT,
 .errstr = "invalid bpf_context access off=176 size=4",
 .prog_type = BPF_PROG_TYPE_CGROUP_SKB,
},
{
 "read gso_size from CLS",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, gso_size)),
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
 .prog_type = BPF_PROG_TYPE_SCHED_CLS,
},
{
 "padding after gso_size is not accessible",
 .insns = {
 BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
      offsetofend(struct __sk_buff, gso_size)),
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_EXIT_INSN(),
 },
 .result = REJECT,
 .result_unpriv = REJECT,
 .errstr = "invalid bpf_context access off=180 size=4",
 .prog_type = BPF_PROG_TYPE_SCHED_CLS,
},
{
 "read hwtstamp from CGROUP_SKB",
 .insns = {
 BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, hwtstamp)),
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
 .prog_type = BPF_PROG_TYPE_CGROUP_SKB,
},
{
 "read hwtstamp from CGROUP_SKB",
 .insns = {
 BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_1,
      offsetof(struct __sk_buff, hwtstamp)),
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
 .prog_type = BPF_PROG_TYPE_CGROUP_SKB,
},
{
 "write hwtstamp from CGROUP_SKB",
 .insns = {
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0,
      offsetof(struct __sk_buff, hwtstamp)),
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_EXIT_INSN(),
 },
 .result = REJECT,
 .result_unpriv = REJECT,
 .errstr = "invalid bpf_context access off=184 size=8",
 .prog_type = BPF_PROG_TYPE_CGROUP_SKB,
},
{
 "read hwtstamp from CLS",
 .insns = {
 BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1,
      offsetof(struct __sk_buff, hwtstamp)),
 BPF_MOV64_IMM(BPF_REG_0, 0),
 BPF_EXIT_INSN(),
 },
 .result = ACCEPT,
 .prog_type = BPF_PROG_TYPE_SCHED_CLS,
},
{
 "check wire_len is not readable by sockets",
 .insns = {
  BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
       offsetof(struct __sk_buff, wire_len)),
  BPF_EXIT_INSN(),
 },
 .errstr = "invalid bpf_context access",
 .result = REJECT,
},
{
 "check wire_len is readable by tc classifier",
 .insns = {
  BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
       offsetof(struct __sk_buff, wire_len)),
  BPF_EXIT_INSN(),
 },
 .prog_type = BPF_PROG_TYPE_SCHED_CLS,
 .result = ACCEPT,
},
{
 "check wire_len is not writable by tc classifier",
 .insns = {
  BPF_STX_MEM(BPF_W, BPF_REG_1, BPF_REG_1,
       offsetof(struct __sk_buff, wire_len)),
  BPF_EXIT_INSN(),
 },
 .prog_type = BPF_PROG_TYPE_SCHED_CLS,
 .errstr = "invalid bpf_context access",
 .errstr_unpriv = "R1 leaks addr",
 .result = REJECT,
},
{
       "pkt > pkt_end taken check",
       .insns = {
       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,                //  0. r2 = *(u32 *)(r1 + data_end)
                   offsetof(struct __sk_buff, data_end)),
       BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_1,                //  1. r4 = *(u32 *)(r1 + data)
                   offsetof(struct __sk_buff, data)),
       BPF_MOV64_REG(BPF_REG_3, BPF_REG_4),                    //  2. r3 = r4
       BPF_ALU64_IMM(BPF_ADD, BPF_REG_3, 42),                  //  3. r3 += 42
       BPF_MOV64_IMM(BPF_REG_1, 0),                            //  4. r1 = 0
       BPF_JMP_REG(BPF_JGT, BPF_REG_3, BPF_REG_2, 2),          //  5. if r3 > r2 goto 8
       BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 14),                  //  6. r4 += 14
       BPF_MOV64_REG(BPF_REG_1, BPF_REG_4),                    //  7. r1 = r4
       BPF_JMP_REG(BPF_JGT, BPF_REG_3, BPF_REG_2, 1),          //  8. if r3 > r2 goto 10
       BPF_LDX_MEM(BPF_H, BPF_REG_2, BPF_REG_1, 9),            //  9. r2 = *(u8 *)(r1 + 9)
       BPF_MOV64_IMM(BPF_REG_0, 0),                            // 10. r0 = 0
       BPF_EXIT_INSN(),                                        // 11. exit
       },
       .result = ACCEPT,
       .prog_type = BPF_PROG_TYPE_SK_SKB,
       .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},
{
       "pkt_end < pkt taken check",
       .insns = {
       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,                //  0. r2 = *(u32 *)(r1 + data_end)
                   offsetof(struct __sk_buff, data_end)),
       BPF_LDX_MEM(BPF_W, BPF_REG_4, BPF_REG_1,                //  1. r4 = *(u32 *)(r1 + data)
                   offsetof(struct __sk_buff, data)),
       BPF_MOV64_REG(BPF_REG_3, BPF_REG_4),                    //  2. r3 = r4
       BPF_ALU64_IMM(BPF_ADD, BPF_REG_3, 42),                  //  3. r3 += 42
       BPF_MOV64_IMM(BPF_REG_1, 0),                            //  4. r1 = 0
       BPF_JMP_REG(BPF_JGT, BPF_REG_3, BPF_REG_2, 2),          //  5. if r3 > r2 goto 8
       BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 14),                  //  6. r4 += 14
       BPF_MOV64_REG(BPF_REG_1, BPF_REG_4),                    //  7. r1 = r4
       BPF_JMP_REG(BPF_JLT, BPF_REG_2, BPF_REG_3, 1),          //  8. if r2 < r3 goto 10
       BPF_LDX_MEM(BPF_H, BPF_REG_2, BPF_REG_1, 9),            //  9. r2 = *(u8 *)(r1 + 9)
       BPF_MOV64_IMM(BPF_REG_0, 0),                            // 10. r0 = 0
       BPF_EXIT_INSN(),                                        // 11. exit
       },
       .result = ACCEPT,
       .prog_type = BPF_PROG_TYPE_SK_SKB,
       .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
},