| { |
| "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, |
| }, |
| { |
| "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, |
| }, |
