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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
| commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
| tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /tools/testing/selftests/bpf/verifier/wide_access.c | |
| parent | Initial commit. (diff) | |
| download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip | |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/bpf/verifier/wide_access.c')
| -rw-r--r-- | tools/testing/selftests/bpf/verifier/wide_access.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/verifier/wide_access.c b/tools/testing/selftests/bpf/verifier/wide_access.c new file mode 100644 index 000000000..55af248ef --- /dev/null +++ b/tools/testing/selftests/bpf/verifier/wide_access.c @@ -0,0 +1,83 @@ +#define BPF_SOCK_ADDR_STORE(field, off, res, err, flgs) \ +{ \ + "wide store to bpf_sock_addr." #field "[" #off "]", \ + .insns = { \ + BPF_MOV64_IMM(BPF_REG_0, 1), \ + BPF_STX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0, \ + offsetof(struct bpf_sock_addr, field[off])), \ + BPF_EXIT_INSN(), \ + }, \ + .result = res, \ + .prog_type = BPF_PROG_TYPE_CGROUP_SOCK_ADDR, \ + .expected_attach_type = BPF_CGROUP_UDP6_SENDMSG, \ + .errstr = err, \ + .flags = flgs, \ +} + +/* user_ip6[0] is u64 aligned */ +BPF_SOCK_ADDR_STORE(user_ip6, 0, ACCEPT, + NULL, 0), +BPF_SOCK_ADDR_STORE(user_ip6, 1, REJECT, + "invalid bpf_context access off=12 size=8", + F_NEEDS_EFFICIENT_UNALIGNED_ACCESS), +BPF_SOCK_ADDR_STORE(user_ip6, 2, ACCEPT, + NULL, 0), +BPF_SOCK_ADDR_STORE(user_ip6, 3, REJECT, + "invalid bpf_context access off=20 size=8", + F_NEEDS_EFFICIENT_UNALIGNED_ACCESS), + +/* msg_src_ip6[0] is _not_ u64 aligned */ +BPF_SOCK_ADDR_STORE(msg_src_ip6, 0, REJECT, + "invalid bpf_context access off=44 size=8", + F_NEEDS_EFFICIENT_UNALIGNED_ACCESS), +BPF_SOCK_ADDR_STORE(msg_src_ip6, 1, ACCEPT, + NULL, 0), +BPF_SOCK_ADDR_STORE(msg_src_ip6, 2, REJECT, + "invalid bpf_context access off=52 size=8", + F_NEEDS_EFFICIENT_UNALIGNED_ACCESS), +BPF_SOCK_ADDR_STORE(msg_src_ip6, 3, REJECT, + "invalid bpf_context access off=56 size=8", 0), + +#undef BPF_SOCK_ADDR_STORE + +#define BPF_SOCK_ADDR_LOAD(field, off, res, err, flgs) \ +{ \ + "wide load from bpf_sock_addr." #field "[" #off "]", \ + .insns = { \ + BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_1, \ + offsetof(struct bpf_sock_addr, field[off])), \ + BPF_MOV64_IMM(BPF_REG_0, 1), \ + BPF_EXIT_INSN(), \ + }, \ + .result = res, \ + .prog_type = BPF_PROG_TYPE_CGROUP_SOCK_ADDR, \ + .expected_attach_type = BPF_CGROUP_UDP6_SENDMSG, \ + .errstr = err, \ + .flags = flgs, \ +} + +/* user_ip6[0] is u64 aligned */ +BPF_SOCK_ADDR_LOAD(user_ip6, 0, ACCEPT, + NULL, 0), +BPF_SOCK_ADDR_LOAD(user_ip6, 1, REJECT, + "invalid bpf_context access off=12 size=8", + F_NEEDS_EFFICIENT_UNALIGNED_ACCESS), +BPF_SOCK_ADDR_LOAD(user_ip6, 2, ACCEPT, + NULL, 0), +BPF_SOCK_ADDR_LOAD(user_ip6, 3, REJECT, + "invalid bpf_context access off=20 size=8", + F_NEEDS_EFFICIENT_UNALIGNED_ACCESS), + +/* msg_src_ip6[0] is _not_ u64 aligned */ +BPF_SOCK_ADDR_LOAD(msg_src_ip6, 0, REJECT, + "invalid bpf_context access off=44 size=8", + F_NEEDS_EFFICIENT_UNALIGNED_ACCESS), +BPF_SOCK_ADDR_LOAD(msg_src_ip6, 1, ACCEPT, + NULL, 0), +BPF_SOCK_ADDR_LOAD(msg_src_ip6, 2, REJECT, + "invalid bpf_context access off=52 size=8", + F_NEEDS_EFFICIENT_UNALIGNED_ACCESS), +BPF_SOCK_ADDR_LOAD(msg_src_ip6, 3, REJECT, + "invalid bpf_context access off=56 size=8", 0), + +#undef BPF_SOCK_ADDR_LOAD |