I tried the workaround suggested by @kees, and it works for me on the latest jammy kernel (now 5.15.0-117). With randomize_kstack_offset not specified on the kernel command line, VMs fail to start with the guru meditation error. With randomize_kstack_offset=off on the kernel command line of the host machine, guest VMs start successfully.
This seems like a valuable workaround for any affected users who need other kernel fixes that were made in -116 or -117. If I've understood the discussions correctly, the downside of this approach is that it disables kernel stack offset randomization completely; whereas reverting to the 5.15.0-113 kernel will retain that security safety net, albeit with a reduced level of entropy in the randomization. -- 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
