I've just been hit with this on a Thinkpad W530 running Ubuntu 20.04.4. After freaking out, I did succeed in finding my way to a reboot by entering and saving the BIOS. Then I immediately removed tlp - which is clearly not a long-term solution. As far as I can tell nothing else is using acpi-call-dkms, so I'm thinking I may remove that too, so as to avoid mistakenly bricking my machine.
If I am to remove the /sys/firmware/efivars/dump-* files, am I to also remove the associated /sys/firmware/efi/vars/dump-* directories? Each of those directories look like (choosing just one): $ ls -l efivars/dump* -rw-r--r-- 1 root root 644 Feb 27 00:12 efivars/dump-type0-10-1-1645912016-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0 $ ls -l vars/dump* vars/dump-type0-10-1-1645912016-C-cfc8fc79-be2e-4ddc-97f0-9f98bfe298a0: total 0 -r-------- 1 root root 4096 Feb 27 00:48 attributes -r-------- 1 root root 4096 Feb 27 00:48 data -r-------- 1 root root 4096 Feb 27 00:48 guid -rw------- 1 root root 4096 Feb 27 00:48 raw_var -r-------- 1 root root 4096 Feb 27 00:48 size -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1953261 Title: kernel >= 5.13 BUG: kernel NULL pointer dereference To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/acpi-call/+bug/1953261/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
