diff options
Diffstat (limited to 'tools/testing/selftests/bpf/verifier/wide_access.c')
| -rw-r--r-- | tools/testing/selftests/bpf/verifier/wide_access.c | 73 |
1 files changed, 73 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 000000000000..ccade9312d21 --- /dev/null +++ b/tools/testing/selftests/bpf/verifier/wide_access.c @@ -0,0 +1,73 @@ +#define BPF_SOCK_ADDR_STORE(field, off, res, err) \ +{ \ + "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, \ +} + +/* user_ip6[0] is u64 aligned */ +BPF_SOCK_ADDR_STORE(user_ip6, 0, ACCEPT, + NULL), +BPF_SOCK_ADDR_STORE(user_ip6, 1, REJECT, + "invalid bpf_context access off=12 size=8"), +BPF_SOCK_ADDR_STORE(user_ip6, 2, ACCEPT, + NULL), +BPF_SOCK_ADDR_STORE(user_ip6, 3, REJECT, + "invalid bpf_context access off=20 size=8"), + +/* 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"), +BPF_SOCK_ADDR_STORE(msg_src_ip6, 1, ACCEPT, + NULL), +BPF_SOCK_ADDR_STORE(msg_src_ip6, 2, REJECT, + "invalid bpf_context access off=52 size=8"), +BPF_SOCK_ADDR_STORE(msg_src_ip6, 3, REJECT, + "invalid bpf_context access off=56 size=8"), + +#undef BPF_SOCK_ADDR_STORE + +#define BPF_SOCK_ADDR_LOAD(field, off, res, err) \ +{ \ + "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, \ +} + +/* user_ip6[0] is u64 aligned */ +BPF_SOCK_ADDR_LOAD(user_ip6, 0, ACCEPT, + NULL), +BPF_SOCK_ADDR_LOAD(user_ip6, 1, REJECT, + "invalid bpf_context access off=12 size=8"), +BPF_SOCK_ADDR_LOAD(user_ip6, 2, ACCEPT, + NULL), +BPF_SOCK_ADDR_LOAD(user_ip6, 3, REJECT, + "invalid bpf_context access off=20 size=8"), + +/* 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"), +BPF_SOCK_ADDR_LOAD(msg_src_ip6, 1, ACCEPT, + NULL), +BPF_SOCK_ADDR_LOAD(msg_src_ip6, 2, REJECT, + "invalid bpf_context access off=52 size=8"), +BPF_SOCK_ADDR_LOAD(msg_src_ip6, 3, REJECT, + "invalid bpf_context access off=56 size=8"), + +#undef BPF_SOCK_ADDR_LOAD |