diff options
| -rw-r--r-- | kernel/bpf/log.c | 36 |
1 files changed, 17 insertions, 19 deletions
diff --git a/kernel/bpf/log.c b/kernel/bpf/log.c index 05d737e2fab3..97a1641e848e 100644 --- a/kernel/bpf/log.c +++ b/kernel/bpf/log.c @@ -618,7 +618,6 @@ void print_verifier_state(struct bpf_verifier_env *env, const struct bpf_func_st bool print_all) { const struct bpf_reg_state *reg; - enum bpf_reg_type t; int i; if (state->frameno) @@ -637,32 +636,38 @@ void print_verifier_state(struct bpf_verifier_env *env, const struct bpf_func_st for (i = 0; i < state->allocated_stack / BPF_REG_SIZE; i++) { char types_buf[BPF_REG_SIZE + 1]; bool valid = false; + u8 slot_type; int j; + if (!print_all && !stack_slot_scratched(env, i)) + continue; + for (j = 0; j < BPF_REG_SIZE; j++) { - if (state->stack[i].slot_type[j] != STACK_INVALID) + slot_type = state->stack[i].slot_type[j]; + if (slot_type != STACK_INVALID) valid = true; - types_buf[j] = slot_type_char[state->stack[i].slot_type[j]]; + types_buf[j] = slot_type_char[slot_type]; } types_buf[BPF_REG_SIZE] = 0; if (!valid) continue; - if (!print_all && !stack_slot_scratched(env, i)) - continue; + + reg = &state->stack[i].spilled_ptr; switch (state->stack[i].slot_type[BPF_REG_SIZE - 1]) { case STACK_SPILL: - reg = &state->stack[i].spilled_ptr; - t = reg->type; + /* print MISC/ZERO/INVALID slots above subreg spill */ + for (j = 0; j < BPF_REG_SIZE; j++) + if (state->stack[i].slot_type[j] == STACK_SPILL) + break; + types_buf[j] = '\0'; verbose(env, " fp%d", (-i - 1) * BPF_REG_SIZE); print_liveness(env, reg->live); - verbose(env, "=%s", t == SCALAR_VALUE ? "" : reg_type_str(env, t)); - if (t == SCALAR_VALUE && reg->precise) - verbose(env, "P"); - if (t == SCALAR_VALUE && tnum_is_const(reg->var_off)) - verbose(env, "%lld", reg->var_off.value + reg->off); + verbose(env, "=%s", types_buf); + print_reg_state(env, reg); break; case STACK_DYNPTR: + /* skip to main dynptr slot */ i += BPF_DYNPTR_NR_SLOTS - 1; reg = &state->stack[i].spilled_ptr; @@ -674,7 +679,6 @@ void print_verifier_state(struct bpf_verifier_env *env, const struct bpf_func_st break; case STACK_ITER: /* only main slot has ref_obj_id set; skip others */ - reg = &state->stack[i].spilled_ptr; if (!reg->ref_obj_id) continue; @@ -688,12 +692,6 @@ void print_verifier_state(struct bpf_verifier_env *env, const struct bpf_func_st case STACK_MISC: case STACK_ZERO: default: - reg = &state->stack[i].spilled_ptr; - - for (j = 0; j < BPF_REG_SIZE; j++) - types_buf[j] = slot_type_char[state->stack[i].slot_type[j]]; - types_buf[BPF_REG_SIZE] = 0; - verbose(env, " fp%d", (-i - 1) * BPF_REG_SIZE); print_liveness(env, reg->live); verbose(env, "=%s", types_buf); |