In more recent kernels (i.e. linux-meta-aws/azure 5.13) I can see messages like this: " watchdog: BUG: soft lockup - CPU#3 stuck for 238s!" that seems to indicate the kernel is not giving back control to the userspace/systemd.
Also a message about a missing autofs4 module, that might be related: "systemd[1]: Failed to find module 'autofs4'" -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1944712 Title: systemd/237-3ubuntu10.52 ADT test failure with linux- aws-5.4/5.4.0-1057.60~18.04.1 Status in linux-aws-5.4 package in Ubuntu: Confirmed Status in systemd package in Ubuntu: Confirmed Bug description: This is a scripted bug report about ADT failures while running systemd tests for linux-aws-5.4/5.4.0-1057.60~18.04.1 on bionic. Whether this is caused by the dep8 tests of the tested source or the kernel has yet to be determined. Testing failed on: amd64: https://autopkgtest.ubuntu.com/results/autopkgtest-bionic/bionic/amd64/s/systemd/20210923_022411_52338@/log.gz To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-aws-5.4/+bug/1944712/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
