Public bug reported:
upgrading packages, as usual, on a long-time-in-production Ubuntu
1804LTS server instance,
lsb_release -rd
Description: Ubuntu 18.04.4 LTS
Release: 18.04
uname -rm
5.3.0-40-generic x86_64
today's update included grub,
cat /var/log/apt/history.log
Start-Date: 2020-03-19 08:58:38
Commandline: apt-get upgrade
Upgrade: grub-common:amd64 (2.02-2ubuntu8.14,
2.02-2ubuntu8.15), grub2-common:amd64 (2.02-2ubuntu8.14, 2.02-2ubuntu8.15),
grub-pc:amd64 (2.02-2ubuntu8.14, 2.02-2ubuntu8.15), grub-pc-bin:amd64
(2.02-2ubuntu8.14, 2.02-2ubuntu8.15)
Error: Sub-process /usr/bin/dpkg returned an error code (1)
End-Date: 2020-03-19 09:01:52
the update FAILs in grub post-processing
apparently, the install is -- new behavior -- REWRITING, incorrectly,
the 'GRUB_CMDLINE_LINUX=' stanza in /etc/default/grub -- my _local_ end-
user config
before
cat /etc/default/grub
...
GRUB_CMDLINE_LINUX_DEFAULT=""
53 GRUB_CMDLINE_LINUX="rd.shell rd.udev.log_priority=info
rd.auto=1 \
dolvm lvmwait=/dev/mapper/VG0_ROOT \
rootfstype=ext4 rootdelay=90 rootflags=journal_checksum \
noresume pcie_aspm=off max_loop=256 transparent_hugepage=never
clocksource=tsc clocksource_failover=tsc tsc=reliable force_tsc_stable=1 \
scsi_mod.use_blk_mq=1 \
net.ifnames=1 biosdevname=0 \
showopts noquiet \
log_buf_len=16M print_fatal_signals=1 systemd.log_level=info
systemd.log_target=kmsg earlyprintk=vga,keep \
mitigations=auto spec_store_bypass_disable=on \
"
...
exec an update, as usual
apt-get update && apt-get upgrade
Hit:1 http://security.ubuntu.com/ubuntu bionic-security
InRelease
Hit:2 http://us.archive.ubuntu.com/ubuntu bionic InRelease
Hit:3 http://us.archive.ubuntu.com/ubuntu bionic-updates
InRelease
Hit:4 http://us.archive.ubuntu.com/ubuntu bionic-backports
InRelease
Reading package lists... Done
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n]
-> Y
Do you want to continue? [Y/n] Y
now, fails
Setting up grub-pc (2.02-2ubuntu8.15) ...
Sourcing file `/etc/default/grub'
/etc/default/grub: line 53: unexpected EOF while looking for
matching `"'
dpkg: error processing package grub-pc (--configure):
installed grub-pc package post-installation script subprocess
returned error exit status 2
Errors were encountered while processing:
grub-pc
E: Sub-process /usr/bin/dpkg returned an error code (1)
it's incorrectly re-written /etc/default/grub
cat /etc/default/grub
...
GRUB_CMDLINE_LINUX_DEFAULT=""
53 GRUB_CMDLINE_LINUX="rd.shell rd.udev.log_priority=info
rd.auto=1 dolvm lvmwait=/dev/mapper/VG0_ROOT rootfstype=ext4 rootdelay=90
rootflags=journal_checksum noresume pcie_aspm=off max_loop=256
transparent_hugepage=never clocksource=tsc clocksource_failover=tsc
tsc=reliable force_tsc_stable=1 scsi_mod.use_blk_mq=1 net.ifnames=1
biosdevname=0 showopts noquiet log_buf_len=16M print_fatal_signals=1
systemd.log_level=info systemd.log_target=kmsg earlyprintk=vga,keep
mitigations=auto spec_store_bypass_disable=on"
dolvm lvmwait=/dev/mapper/VG0_ROOT \
rootfstype=ext4 rootdelay=90 rootflags=journal_checksum \
noresume pcie_aspm=off max_loop=256 transparent_hugepage=never
clocksource=tsc clocksource_failover=tsc tsc=reliable force_tsc_stable=1 \
scsi_mod.use_blk_mq=1 \
net.ifnames=1 biosdevname=0 \
showopts noquiet \
log_buf_len=16M print_fatal_signals=1 systemd.log_level=info
systemd.log_target=kmsg earlyprintk=vga,keep \
mitigations=auto spec_store_bypass_disable=on \
"
prepending the EXISTING 'GRUB_CMDLINE_LINUX=' with a duplicate of itself
... plus an errant trailing `"'
fyi,
apt-cache policy grub2
grub2:
Installed: (none)
Candidate: 2.02-2ubuntu8.15
Version table:
2.02-2ubuntu8.15 500
500 http://us.archive.ubuntu.com/ubuntu bionic-updates/universe amd64
Packages
2.02-2ubuntu8 500
500 http://us.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
** Affects: grub2 (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1868138
Title:
18.04LTS upgrade of grub-common:amd64 FAILs in post-install;
incorrectly REWRITES user's /etc/default/grub
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