Encountered this behaviour in dropbear-initramfs in version
2022.83-1+deb12u2 on bare metal installation of Debian 12.8. Bug seems
to occur if:
- Debian 12.8 installed as LUKS-encrypted system (unencrypted /boot,
encrypted root)
- dropbear-initramfs installed
- A network adapter is NOT added to /etc/initramfs-tools/modules
- update-initramfs -u is run
- The machine is rebooted and the LUKS password is entered at the
console
If these conditions are met, then after entry of the unlock password,
the system hangs for approximately a minute, and then an endless stream
of the following is emitted on the console:
/scripts/init-premount/dropbear: line 339: sleep: not found
/scripts/init-premount/dropbear: line 149: cat: not found
This does not appear to prevent access to the system from anything
except the console (if ssh has been previously configured then one can
still remote into the system)
It only appears to occur if there is no network adapter present at all
in the initramfs boot environment. I don't yet know the failure chain
that leads from no adapter present to sleep and cat not found.
If an ethernet adapter is present in the initramfs stage then this bug
does not appear to occur, regardless of whether the adapter is
configured with an IP address or not.
