[Bug 2161098] Re: Random hard freezes caused by i915 kernel page fault in eb_relocate_parse_slow on MacBookAir6,2 (Intel HD 5000)acBookAir6,2 (Intel HD 5000)

Hi again, The test package I created has just finished building. It also contains some changes on top of the currently released kernel version, but those should not affect the fix patch I applied. You can install it as follows $ sudo add-apt-repository ppa:canonical-kernel-team/ppa $ sudo apt upgrade # This will install other 7.0.0-31-generic packages required $ sudo apt install path/to/linux-image-unsigned-7.0.0-31-generic_7.0.0-31.31~lp2161098_amd64.deb \ path/to/linux-modules-7.0.0-31-generic_7.0.0-31.31~lp2161098_amd64.deb # DOWNLOADED FROM [1] Don't forget to uninstall the PPA and packages once you're done testing. Some of the commands remove some packages you'll need to reinstall as well, and differ if you want to have the evental HWE kernel (the default for desktops) or the stable kernel. (default for servers) $ sudo apt remove linux-*-7.0.0-31-generic $ sudo add-apt-repository --remove ppa:canonical-kernel-team/ppa # IF YOU WANT THE EVENTUAL HWE KERNELS $ sudo apt install linux-image-generic-hwe-26.04 linux-headers-generic # IF YOU WANT THE STABLE KERNEL $ sudo apt install linux-image-generic linux-headers-generic Please test to see if this fixes the issue and/or creates any new bugs/instability when running typical tasks on your machine. [1]: https://launchpad.net/~cremfuelled/+archive/ubuntu/kernel/+build/33514389 -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2161098 Title: Random hard freezes caused by i915 kernel page fault in eb_relocate_parse_slow on MacBookAir6,2 (Intel HD 5000)acBookAir6,2 (Intel HD 5000) Status in linux package in Ubuntu: In Progress Bug description: Hardware: - Apple MacBookAir6,2 - Intel Haswell HD Graphics 5000 (i915) Software: - Ubuntu 26.10 - Mesa 26.0.3 - Kernel 7.0.0-27 and 7.0.0-28 affected - Currently testing kernel 7.0.0-14 Problem: The system randomly hard freezes. The display remains unchanged with no graphical corruption, but the keyboard and mouse become completely unresponsive and only a hard power-off recovers the system. The freezes are not tied to any particular application. One crash happened while running Papers, but other freezes have occurred during normal desktop use. The previous boot journal contains the following kernel oops: BUG: unable to handle page fault Call trace: kfree() eb_relocate_parse_slow [i915] i915_gem_do_execbuffer [i915] i915_gem_execbuffer2_ioctl [i915] The same MacBook Air hardware is completely stable under macOS (including Big Sur), suggesting this is a Linux kernel regression rather than a hardware fault. The issue has occurred multiple times on kernels 7.0.0-27 and 7.0.0-28. I am now testing kernel 7.0.0-14 to determine whether the regression was introduced after that version. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-14-generic 7.0.0-14.14 ProcVersionSignature: Ubuntu 7.0.0-14.14-generic 7.0.0 Uname: Linux 7.0.0-14-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.34.0-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: khaled 2072 F.... wireplumber /dev/snd/controlC0: khaled 2072 F.... wireplumber /dev/snd/seq: khaled 2048 F.... pipewire CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Fri Jul 17 16:19:07 2026 InstallationDate: Installed on 2026-07-14 (3 days ago) InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1) IwDevWlp3s0Link: Error: command ['iw', 'dev', 'wlp3s0', 'link'] failed with exit code 255: command failed: Operation not permitted (-1) Connected to <hidden-mac> (on wlp3s0) SSID: <hidden> freq: 5280.0 MachineType: Apple Inc. MacBookAir6,2 ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-14-generic root=UUID=b8679823-0d43-482e-99df-035663cbd8cf ro quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 01/13/2023 dmi.bios.release: 0.1 dmi.bios.vendor: Apple Inc. dmi.bios.version: 478.0.0.0.0 dmi.board.asset.tag: Base Board Asset Tag# dmi.board.name: Mac-7DF21CB3ED6977E5 dmi.board.vendor: Apple Inc. dmi.board.version: MacBookAir6,2 dmi.chassis.type: 10 dmi.chassis.vendor: Apple Inc. dmi.chassis.version: Mac-7DF21CB3ED6977E5 dmi.modalias: dmi:bvnAppleInc.:bvr478.0.0.0.0:bd01/13/2023:br0.1:svnAppleInc.:pnMacBookAir6,2:pvr1.0:rvnAppleInc.:rnMac-7DF21CB3ED6977E5:rvrMacBookAir6,2:cvnAppleInc.:ct10:cvrMac-7DF21CB3ED6977E5:skuSystemSKU#:pfaMacBookAir: dmi.product.family: MacBook Air dmi.product.name: MacBookAir6,2 dmi.product.sku: System SKU# dmi.product.version: 1.0 dmi.sys.vendor: Apple Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2161098/+subscriptions