/* We don't know whether the bus is trusted or not, so better
* be safe, and authenticate everything */
b->trusted = false;
- b->attach_flags |= KDBUS_ATTACH_CAPS | KDBUS_ATTACH_CREDS;
+ b->attach_flags |= KDBUS_ATTACH_CAPS | KDBUS_ATTACH_CREDS | KDBUS_ATTACH_PIDS;
r = sd_bus_start(b);
if (r < 0)