This bug was fixed in the package initramfs-tools - 0.136ubuntu6.3
---------------
initramfs-tools (0.136ubuntu6.3) focal; urgency=medium
* scripts/functions: Prevent printf error carry over if the wrong
console is set. (LP: #1879987)
The function _log_msg() is "void" typed, returning whatever its
last command returns. This function is the basic building block
for all error/warning messages in initramfs-tools. If a bad console
is provided to kernel on command-line, printf returns error, and so
this error is carried over in _log_msg(). Happens that checkfs()
function has a loop that runs forever in this scenario (*if* fsck
is not present in initramfs and "quiet" is not passed in the
command-line). If that happens, boot is stuck and cannot progress.
The simple fix hereby merged is to return zero on _log_msg().
* scripts/local: Re-execute cryptroot local-block script. (LP: #1879980)
Currently, if an encrypted rootfs is configured on top of a MD RAID1
array and such array gets degraded (like a member is removed/failed),
initramfs-tools cannot mount the rootfs and the boot fails. We fix
that issue here by allowing cryptroot script to re-run on local-block
stage, given that mdadm is able to activate a degraded array in that
point. There is a cryptsetup counter-part for this fix, but alone the
initramfs-tools portion is innocuous.
* d/tests: Add explicit call to partprobe on net test, specially in
prep-image and run-image. (LP: #1893675)
-- gpicc...@canonical.com (Guilherme G. Piccoli) Mon, 31 Aug 2020
13:43:29 -0300
** Changed in: initramfs-tools (Ubuntu Focal)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1879987
Title:
machine get stuck at boot if specified 'console=ttyS* ' doesn't exist.
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