Wanting to test whether the fix had also made it into the focal-proposed (Ubuntu 20.04) kernel version -119, despite the absence of any indication of that in the bug status description, I tried to install the proposed kernel, but I can't:
# trying to install from proposed2 (also tested proposed, which didn't make any difference) :~$ sudo apt-get install linux-hwe-5.15.0-119/focal-proposed2 Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package linux-hwe-5.15.0-119 E: Couldn't find any package by glob 'linux-hwe-5.15.0-119' E: Couldn't find any package by regex 'linux-hwe-5.15.0-119' # tried to be more generic... :~$ sudo apt-get install linux-generic/focal-proposed2 Reading package lists... Done Building dependency tree Reading state information... Done E: Release 'focal-proposed2' for 'linux-generic' was not found # getting paranoid, thus confirming that the proposed-repository was indeed enabled :~$ cat /etc/apt/sources.list | grep -i proposed deb http://de.archive.ubuntu.com/ubuntu/ focal-proposed main universe restricted multiverse # but alas, no such package(s) can be found by apt :~$ sudo apt-cache search --names-only "linux.*\-119" | grep -e 'image' -e 'hwe' <empty return> And yet, the ubuntu/proposed2 archive seems to contain the packages of interest: https://launchpad.net/~canonical-kernel-team/+archive/ubuntu/proposed2?field.series_filter=focal What am I missing..? -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-hwe-6.8 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: Invalid Status in linux-hwe-6.8 package in Ubuntu: Invalid Status in linux-signed-hwe-5.15 package in Ubuntu: Confirmed Status in virtualbox package in Ubuntu: Confirmed Status in linux source package in Jammy: Fix Committed Status in linux-hwe-6.8 source package in Jammy: Fix Committed Status in linux-signed-hwe-5.15 source package in Jammy: Invalid Status in virtualbox source package in Jammy: Confirmed Bug description: BugLink: https://bugs.launchpad.net/bugs/2073267 SRU Justification: [Impact] Commit "randomize_kstack: Improve entropy diffusion" changed the kernel stack for entropy to 1KiB, limiting the thread kernel stack to 15Kib. This impacts virtualbox 6.1.50 on jammy, that is no longer maintained upstream. The issue does not persist on version 7.0.20 due to a code refactoring that probably resulted in less stack usage. Fixing it on the jammy virtualbox package side is not straightfoward because the fix is not easy to backport to 6.x and upgrading the jammy package to 7.x breaks current users machines that run Windows, but not only. Users need to uninstall the Guest additions drivers, migrate the virtualbox package to 7.x, boot each VMs and install the Guest additions drivers in each VM. This impacts: 1. jammy:linux 2. jammy:linux-hwe-6.8 3. focal:linux-hwe-5.15 [Fix] Revert commit "randomize_kstack: Improve entropy diffusion" [Test Plan] Without this fix, a VM would crash, showing with "VCPU0: Guru Meditation -2708 (VERR_VMM_SET_JMP_ABORTED_RESUME)". After the kernel upgrade, all VMs should run with no problem. [Where problems could occur] This may have an impact on security. The commit is a fix to improve the stack entropy. Original 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 : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
