diff options
Diffstat (limited to 'kernel/bpf/verifier.c')
| -rw-r--r-- | kernel/bpf/verifier.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 86f9cd5d1c4e..5aa810882583 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -352,6 +352,14 @@ static bool reg_may_point_to_spin_lock(const struct bpf_reg_state *reg) map_value_has_spin_lock(reg->map_ptr); } +static bool reg_type_may_be_refcounted_or_null(enum bpf_reg_type type) +{ + return type == PTR_TO_SOCKET || + type == PTR_TO_SOCKET_OR_NULL || + type == PTR_TO_TCP_SOCK || + type == PTR_TO_TCP_SOCK_OR_NULL; +} + static bool arg_type_may_be_refcounted(enum bpf_arg_type type) { return type == ARG_PTR_TO_SOCK_COMMON; @@ -451,8 +459,9 @@ static void print_verifier_state(struct bpf_verifier_env *env, if (t == PTR_TO_STACK) verbose(env, ",call_%d", func(env, reg)->callsite); } else { - verbose(env, "(id=%d ref_obj_id=%d", reg->id, - reg->ref_obj_id); + verbose(env, "(id=%d", reg->id); + if (reg_type_may_be_refcounted_or_null(t)) + verbose(env, ",ref_obj_id=%d", reg->ref_obj_id); if (t != SCALAR_VALUE) verbose(env, ",off=%d", reg->off); if (type_is_pkt_pointer(t)) |