This Virtualbox ticket contains a diff that looks like it might be the change they did to fix compatibility with RANDOMIZE_KSTACK_OFFSET in the 5.13 kernel. https://www.virtualbox.org/ticket/20456
** Bug watch added: Virtualbox Trac #20456 http://www.virtualbox.org/ticket/20456 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2073267 Title: Virtualbox Guru meditation on VM start caused by kernel commit in v6.9-rc4 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2073267/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs