diff options
Diffstat (limited to 'kernel/bpf/log.c')
| -rw-r--r-- | kernel/bpf/log.c | 42 |
1 files changed, 33 insertions, 9 deletions
diff --git a/kernel/bpf/log.c b/kernel/bpf/log.c index 3505f3e5ae96..594a234f122b 100644 --- a/kernel/bpf/log.c +++ b/kernel/bpf/log.c @@ -539,6 +539,19 @@ static void verbose_snum(struct bpf_verifier_env *env, s64 num) verbose(env, "%#llx", num); } +int tnum_strn(char *str, size_t size, struct tnum a) +{ + /* print as a constant, if tnum is fully known */ + if (a.mask == 0) { + if (is_unum_decimal(a.value)) + return snprintf(str, size, "%llu", a.value); + else + return snprintf(str, size, "%#llx", a.value); + } + return snprintf(str, size, "(%#llx; %#llx)", a.value, a.mask); +} +EXPORT_SYMBOL_GPL(tnum_strn); + static void print_scalar_ranges(struct bpf_verifier_env *env, const struct bpf_reg_state *reg, const char **sep) @@ -615,6 +628,12 @@ static bool type_is_map_ptr(enum bpf_reg_type t) { } } +/* + * _a stands for append, was shortened to avoid multiline statements below. + * This macro is used to output a comma separated list of attributes. + */ +#define verbose_a(fmt, ...) ({ verbose(env, "%s" fmt, sep, ##__VA_ARGS__); sep = ","; }) + static void print_reg_state(struct bpf_verifier_env *env, const struct bpf_func_state *state, const struct bpf_reg_state *reg) @@ -630,11 +649,6 @@ static void print_reg_state(struct bpf_verifier_env *env, verbose_snum(env, reg->var_off.value + reg->off); return; } -/* - * _a stands for append, was shortened to avoid multiline statements below. - * This macro is used to output a comma separated list of attributes. - */ -#define verbose_a(fmt, ...) ({ verbose(env, "%s" fmt, sep, ##__VA_ARGS__); sep = ","; }) verbose(env, "%s", reg_type_str(env, t)); if (t == PTR_TO_STACK) { @@ -669,6 +683,12 @@ static void print_reg_state(struct bpf_verifier_env *env, verbose_a("r="); verbose_unum(env, reg->range); } + if (base_type(t) == PTR_TO_MEM) { + verbose_a("sz="); + verbose_unum(env, reg->mem_size); + } + if (t == CONST_PTR_TO_DYNPTR) + verbose_a("type=%s", dynptr_type_str(reg->dynptr.type)); if (tnum_is_const(reg->var_off)) { /* a pointer register with fixed offset */ if (reg->var_off.value) { @@ -685,8 +705,6 @@ static void print_reg_state(struct bpf_verifier_env *env, } } verbose(env, ")"); - -#undef verbose_a } void print_verifier_state(struct bpf_verifier_env *env, const struct bpf_func_state *state, @@ -710,6 +728,7 @@ 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]; + const char *sep = ""; bool valid = false; u8 slot_type; int j; @@ -748,9 +767,14 @@ void print_verifier_state(struct bpf_verifier_env *env, const struct bpf_func_st verbose(env, " fp%d", (-i - 1) * BPF_REG_SIZE); print_liveness(env, reg->live); - verbose(env, "=dynptr_%s", dynptr_type_str(reg->dynptr.type)); + verbose(env, "=dynptr_%s(", dynptr_type_str(reg->dynptr.type)); + if (reg->id) + verbose_a("id=%d", reg->id); if (reg->ref_obj_id) - verbose(env, "(ref_id=%d)", reg->ref_obj_id); + verbose_a("ref_id=%d", reg->ref_obj_id); + if (reg->dynptr_id) + verbose_a("dynptr_id=%d", reg->dynptr_id); + verbose(env, ")"); break; case STACK_ITER: /* only main slot has ref_obj_id set; skip others */ |