bpf/verifier: more concise register state logs for constant var_off

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Edward Cree
2017-08-07 15:26:56 +01:00
committed by David S. Miller
parent b03c9f9fdc
commit 7d1238f210

View File

@ -234,6 +234,13 @@ static void print_verifier_state(struct bpf_verifier_state *state)
verbose(",ks=%d,vs=%d",
reg->map_ptr->key_size,
reg->map_ptr->value_size);
if (tnum_is_const(reg->var_off)) {
/* Typically an immediate SCALAR_VALUE, but
* could be a pointer whose offset is too big
* for reg->off
*/
verbose(",imm=%llx", reg->var_off.value);
} else {
if (reg->smin_value != reg->umin_value &&
reg->smin_value != S64_MIN)
verbose(",smin_value=%lld",
@ -254,6 +261,7 @@ static void print_verifier_state(struct bpf_verifier_state *state)
tnum_strn(tn_buf, sizeof(tn_buf), reg->var_off);
verbose(",var_off=%s", tn_buf);
}
}
verbose(")");
}
}