Dear maintainer, I wonder if this fix can be backported to stable-pu and oldstable-pu, since this bug may lead to data corruption. A possible approach might be to mask the kexec init script in the systemd side, i.e. via `systemctl mask kexec.service`, so that systemd users can get rid of the kexec init script and other init system users can still enjoy the provided kexec init script.
Cheers, Miao Wang
