Desktop froze with cryptic TTY messages

My Cinnon desktop froze up so I open up a tty to fix the issue. In the tty I get this message:

For several minutes it just adds identical lines.

I tried to ssh in from another machine but the connection just hangs.

I switch back to tty7 and get this message after a while.

I see some ext4-fs errors but I just ran an fsck on the disk.

I can’t get a prompt locally or remotely to run any commands on this machine.

Boot from a USB Thumb Drive and see if you can gain access to the drive in question.

Yup, that works fine. Just rebooting works fine too. I am beginning to suspect the drive but according to SMART the drive is OK. Perhaps there are some more robust drive testing tools someone can recommend.