diff options
Diffstat (limited to 'tools/testing')
| -rw-r--r-- | tools/testing/selftests/bpf/test_verifier.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/tools/testing/selftests/bpf/test_verifier.c b/tools/testing/selftests/bpf/test_verifier.c index 3c7d3a45a3c5..50e15cedbb7f 100644 --- a/tools/testing/selftests/bpf/test_verifier.c +++ b/tools/testing/selftests/bpf/test_verifier.c @@ -1130,15 +1130,27 @@ static struct bpf_test tests[] = { .errstr = "invalid bpf_context access", }, { - "check skb->mark is writeable by SK_SKB", + "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 = ACCEPT, + .result = REJECT, .prog_type = BPF_PROG_TYPE_SK_SKB, + .errstr = "invalid bpf_context access", }, { "check skb->tc_index is writeable by SK_SKB", |