Hello everyone, Lets get this problem solved.
Now, doing a major version update to virtualbox in Jammy from 6.1.50-dfsg-1~ubuntu1.20.04.1 to 7.0.20 is against Ubuntu SRU policy, and would also come with the consequence that it would break all existing VMs that use guest additions, as guest additions would have to be removed from VMs, virtualbox upgraded, and then guest additions installed again. So no, doing a major upgrade to virtualbox is the wrong approach. We have two options: 1) Locate the change in the kernel, then either revert it, or find a fix for it. 2) Locate the fix in virtualbox 7.0.20 and backport if possible to 6.1.50. For the moment, let's just investigate 1). I read AaronMa's comment with the upstream bug: https://bugzilla.kernel.org/show_bug.cgi?id=219107 Now, only the first commit got backported to the jammy 5.15 kernel: commit 507882a9d37affee0903c0ebb3d1544f4bfba024 ubuntu-jammy Author: Kees Cook <[email protected]> Date: Sat Mar 9 12:24:48 2024 -0800 Subject: randomize_kstack: Improve entropy diffusion Link: https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/jammy/commit/?id=507882a9d37affee0903c0ebb3d1544f4bfba024 This landed in: $ git describe --contains 507882a9d37affee0903c0ebb3d1544f4bfba024 Ubuntu-5.15.0-115.125~210 which is when we started seeing the issues. I have reverted this commit, and built test kernels for the more technically inclined people to try: https://launchpad.net/~mruffell/+archive/ubuntu/lp2073267-test I just uploaded them. Please wait three hours from this message for them to have finished building. There are both focal HWE and jammy kernels in this ppa. Please note this package is NOT SUPPORTED by Canonical, and is for TESTING PURPOSES ONLY. ONLY Install in a dedicated test environment. Instructions to Install (On a focal or jammy system): 1) sudo add-apt-repository ppa:mruffell/lp2073267-test 2) sudo apt update 3) sudo apt install linux-image-unsigned-5.15.0-117-generic linux-modules-5.15.0-117-generic linux-modules-extra-5.15.0-117-generic linux-headers-5.15.0-117-generic 4) sudo reboot 5) uname -rv Look for +TEST2073267v20240731b1 If you are asked to abort removal of the currently running kernel, say no. Does it fix virtualbox 6.1.50? Please let me know. In the meantime, I will try and look through the virtualbox subversion repository to find where virtualbox fixed this to see if backporting a fix for virtualbox would be a better route to take. https://www.virtualbox.org/browser/vbox/trunk Thanks, Matthew -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-signed-hwe-5.15 in Ubuntu. https://bugs.launchpad.net/bugs/2073267 Title: Virtualbox Guru meditation on VM start caused by kernel commit in v6.9-rc4 Status in linux package in Ubuntu: Triaged Status in linux-signed-hwe-5.15 package in Ubuntu: Confirmed Status in virtualbox package in Ubuntu: Confirmed Bug description: It worked yesterday, but today I get a Guru Meditation trying to start some of my virtual machines. This shows up in VBox.log as "VCPU0: Guru Meditation -2708 (VERR_VMM_SET_JMP_ABORTED_RESUME)". I suspect this may have started due to a Linux kernel upgrade I installed this morning. A fresh VM with no disk shows the issue. Sometimes turning off the I/O APIC makes the issue go away, sometimes not. Turning off nested paging sometimes lets VirtualBox make a little bit of progress w.r.t. booting VMs, but that usually still crashes before the VM finishes starting. This may be related to this bug reported on the VirtualBox forums: https://forums.virtualbox.org/viewtopic.php?t=111889&sid=5cd33c0872a03b689e7e9f84d850f538 https://forums.virtualbox.org/viewtopic.php?t=111918 Ubuntu is 22.04.4 LTS, kernel is 5.15.0-116-generic, VirtualBox is 6.1.50-dfsg-1~ubuntu1.22.04.1. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2073267/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
