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bpf: add test cases to bpf selftests to cover all meta tests
authorDaniel Borkmann <daniel@iogearbox.net>
Wed, 1 Nov 2017 22:58:11 +0000 (23:58 +0100)
committerDavid S. Miller <davem@davemloft.net>
Thu, 2 Nov 2017 08:01:39 +0000 (17:01 +0900)
Lets also add test cases to cover all possible data_meta access tests
for good/bad access cases so we keep tracking them.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
tools/testing/selftests/bpf/test_verifier.c patch | blob | blame | history

diff --git a/tools/testing/selftests/bpf/test_verifier.c b/tools/testing/selftests/bpf/test_verifier.c
index 3b38a3d2eebd9cb0ab2dda09e7083f4f3fa59823..bb3c4ad8c59fb60e00d5e4f44d8a8f1d96addf42 100644 (file)
--- a/tools/testing/selftests/bpf/test_verifier.c
+++ b/tools/testing/selftests/bpf/test_verifier.c
@@ -7398,6 +7398,448 @@ static struct bpf_test tests[] = {
                .prog_type = BPF_PROG_TYPE_XDP,
                .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
        },
+       {
+               "XDP pkt read, pkt_meta' > pkt_data, good access",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_3, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .result = ACCEPT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_meta' > pkt_data, bad access 1",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_3, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -4),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+               .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
+       },
+       {
+               "XDP pkt read, pkt_meta' > pkt_data, bad access 2",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_3, 0),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_data > pkt_meta', good access",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGT, BPF_REG_3, BPF_REG_1, 1),
+                       BPF_JMP_IMM(BPF_JA, 0, 0, 1),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, -5),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .result = ACCEPT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+               .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
+       },
+       {
+               "XDP pkt read, pkt_data > pkt_meta', bad access 1",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGT, BPF_REG_3, BPF_REG_1, 1),
+                       BPF_JMP_IMM(BPF_JA, 0, 0, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_data > pkt_meta', bad access 2",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGT, BPF_REG_3, BPF_REG_1, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_meta' < pkt_data, good access",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLT, BPF_REG_1, BPF_REG_3, 1),
+                       BPF_JMP_IMM(BPF_JA, 0, 0, 1),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, -5),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .result = ACCEPT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+               .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
+       },
+       {
+               "XDP pkt read, pkt_meta' < pkt_data, bad access 1",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLT, BPF_REG_1, BPF_REG_3, 1),
+                       BPF_JMP_IMM(BPF_JA, 0, 0, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_meta' < pkt_data, bad access 2",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLT, BPF_REG_1, BPF_REG_3, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_data < pkt_meta', good access",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLT, BPF_REG_3, BPF_REG_1, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .result = ACCEPT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_data < pkt_meta', bad access 1",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLT, BPF_REG_3, BPF_REG_1, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -4),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+               .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
+       },
+       {
+               "XDP pkt read, pkt_data < pkt_meta', bad access 2",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLT, BPF_REG_3, BPF_REG_1, 0),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_meta' >= pkt_data, good access",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGE, BPF_REG_1, BPF_REG_3, 1),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, -5),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .result = ACCEPT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+               .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
+       },
+       {
+               "XDP pkt read, pkt_meta' >= pkt_data, bad access 1",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGE, BPF_REG_1, BPF_REG_3, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_meta' >= pkt_data, bad access 2",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGE, BPF_REG_1, BPF_REG_3, 0),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, -5),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+               .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
+       },
+       {
+               "XDP pkt read, pkt_data >= pkt_meta', good access",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGE, BPF_REG_3, BPF_REG_1, 1),
+                       BPF_JMP_IMM(BPF_JA, 0, 0, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .result = ACCEPT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_data >= pkt_meta', bad access 1",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGE, BPF_REG_3, BPF_REG_1, 1),
+                       BPF_JMP_IMM(BPF_JA, 0, 0, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -4),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+               .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
+       },
+       {
+               "XDP pkt read, pkt_data >= pkt_meta', bad access 2",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JGE, BPF_REG_3, BPF_REG_1, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_meta' <= pkt_data, good access",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLE, BPF_REG_1, BPF_REG_3, 1),
+                       BPF_JMP_IMM(BPF_JA, 0, 0, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .result = ACCEPT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_meta' <= pkt_data, bad access 1",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLE, BPF_REG_1, BPF_REG_3, 1),
+                       BPF_JMP_IMM(BPF_JA, 0, 0, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -4),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+               .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
+       },
+       {
+               "XDP pkt read, pkt_meta' <= pkt_data, bad access 2",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLE, BPF_REG_1, BPF_REG_3, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_data <= pkt_meta', good access",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLE, BPF_REG_3, BPF_REG_1, 1),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, -5),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .result = ACCEPT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+               .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
+       },
+       {
+               "XDP pkt read, pkt_data <= pkt_meta', bad access 1",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLE, BPF_REG_3, BPF_REG_1, 1),
+                       BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, -8),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+       },
+       {
+               "XDP pkt read, pkt_data <= pkt_meta', bad access 2",
+               .insns = {
+                       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
+                                   offsetof(struct xdp_md, data_meta)),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
+                                   offsetof(struct xdp_md, data)),
+                       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
+                       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
+                       BPF_JMP_REG(BPF_JLE, BPF_REG_3, BPF_REG_1, 0),
+                       BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, -5),
+                       BPF_MOV64_IMM(BPF_REG_0, 0),
+                       BPF_EXIT_INSN(),
+               },
+               .errstr = "R1 offset is outside of the packet",
+               .result = REJECT,
+               .prog_type = BPF_PROG_TYPE_XDP,
+               .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
+       },
        {
                "bpf_exit with invalid return code. test1",
                .insns = {
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