AerEvent::parse now rejects malformed device= tokens at parse time via
the new is_valid_pci_bdf helper (SSSS:BB:DD.F format matching the
kernel's pci_uevent). Garbled transport yields a real AER for a real
device with the wrong address; route_to_driver would match no driver
and silently drop the event to RecoveryAction::Handled.
Three routing tests retargeted from "d" to "0000:aa:00.0" (both the
binds key and the AerEvent::parse(...) string). 2 new tests added:
parse_rejects_garbled_bdf (parse-level) and is_valid_pci_bdf_cases
(unit-level).
vasilito
f7fd8f8eee