I've just encountered this issue myself, on a VM that started life as Ubuntu 16.04, do-release-upgrade to 18.04, then to 20.04, and now it fails to boot with a similar error: /lib/systemd/libsystemd- shared-245.so: undefined symbol: seccomp_api_get
The only non-Ubuntu-standard stuff on this VM is some perl modules installed via CPAN, and none of those touch anything to do with Systemd, so I'm not sure why this is happening. I did see a post-install upgrade issue with the rkhunter package failing to find /usr/bin/egrep, but I ignored that issue and continued. I'm going to rollback, look for the lib involved, and see if I can remove it before retrying the do-release-upgrade -d to 20.04. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to libseccomp in Ubuntu. https://bugs.launchpad.net/bugs/1876486 Title: Kernel panic booting after 18.04 to 20.04 upgrade Status in libseccomp package in Ubuntu: Incomplete Bug description: Upgraded Ubuntu 18.04 to 20.04. Following the upgrade, booting was not possible. The error messages is: /sbin/init: symbol lookup error: /lib/systemd/libsystemd-shared-245.so: undefined symbol: seccomp_api_get [ 4.608900] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00007f00 See also attached photograph of screen during boot. Upgrade followed steps from here: https://help.ubuntu.com/community/FocalUpgrades/Kubuntu With the excpetion that The -d flag was used for the do-release-upgrade: sudo do-release-upgrade -d -m desktop 1) The release of Ubuntu you are using, via 'lsb_release -rd' or System -> About Ubuntu Prior to upgrade: Ubuntu 18.04.4 After upgrade (but never booted): Ubuntu (Kubuntu) 20.04 Note that Ubuntu had originally be installed, but kubuntu-desktop was recently installed to change to Kubuntu, but no booting problems were experienced before updating to 20.04. 2) The version of the package you are using, via 'apt-cache policy pkgname' or by checking in Unknown -- Package version may have changed when upgrading to 20.04. 3) What you expected to happen Boot without kernel panic. 4) What happened instead Could not boot. Even selecting safe mode from grub could not boot. Had to restore system from backups. Will not attempt upgrade again. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libseccomp/+bug/1876486/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp

