Attached refcount / OOM log ** Attachment added: "refcount error log" https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-5.19/+bug/2020757/+attachment/5675585/+files/oom.log
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-signed-hwe-5.19 in Ubuntu. https://bugs.launchpad.net/bugs/2020757 Title: Kernel BUG (null ptr dereference) with linux-image-5.19.0-42-generic (HWE kernel on 22.04) Status in linux-signed-hwe-5.19 package in Ubuntu: New Bug description: I use Ubuntu 22.04 in VMWare Player 17.0.2 (Windows host, due to corporate IT...). I installed the HWE kernel since I have an Intel CPU with P/E-cores. 3D acceleration is enabled in VMWare. With linux-image-5.19.0-41-generic it is rock solid. With linux- image-5.19.0-42-generic it invariably crashes after anything between a minute and an hour. In the journalctl after rebooting it showed that X.Org had crashed followed by a Kernel BUG/Oops due to NULL pointer dereference in drm_gem_object_release_handle. A journalctl log from the Xorg crash up until the kernel OOPS has been attached to this case. This issue happened twice with this kernel. In addition, after trying to reproduce it with kdump tools installed, I got a different issue: refcount_t: saturated; leaking memory. in the log, leading to the OOM killing everything on the system, including (based on what was printed on the terminal), systemd-udevd and journald. That OOM killing never made it into the journal however, as can be expected. I have attached what I could get from the journal for this case as well. One thing that helped trigger this bug (but not every time) was launching Firefox, but once it didn't crash from that and only crashed much much later. Unfortunately I could not get ubuntu-bug to work for this case. I tried "ubuntu-bug --package linux-image-5.19.0-42-generic" but it did absolutely nothing. I'm happy to provide any additional information you require however. $ lsb_release -rd Description: Ubuntu 22.04.2 LTS Release: 22.04 $ apt-cache policy linux-generic-hwe-20.04 linux-generic-hwe-20.04: Installed: (none) Candidate: 5.15.0.72.70 Version table: 5.15.0.72.70 500 500 http://se.archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages 500 http://security.ubuntu.com/ubuntu jammy-security/main amd64 Packages 5.15.0.25.27 500 500 http://se.archive.ubuntu.com/ubuntu jammy/main amd64 Packages $ apt-cache policy linux-image-5.19.0-42-generic linux-image-5.19.0-42-generic: Installed: 5.19.0-42.43~22.04.1 Candidate: 5.19.0-42.43~22.04.1 Version table: *** 5.19.0-42.43~22.04.1 500 500 http://se.archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages 500 http://security.ubuntu.com/ubuntu jammy-security/main amd64 Packages 100 /var/lib/dpkg/status What I expected to happen: No crash. What happened instead: The crash in the attached log. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-5.19/+bug/2020757/+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
