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[Timo Aaltonen <2122654@xxxxxxxxxxxxxxxxxx>]

staged for 25.2.3

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https://bugs.launchpad.net/bugs/2122654

Title:
  virtio-gpu is leaking /dev/dri/card0 resources in mesa 25.2 but not
  25.0

Status in Mesa:
  Unknown
Status in mesa package in Ubuntu:
  Triaged

Bug description:
  After I upgraded to Ubuntu 25.10, I noticed that I'm periodically running out of memory couple of times per day. `watch free -h` indeed shows a huge shared memory usage (3 GB and rising). The shared memory usage climbs up at a rate about 3mb/s and there's apparently no ceiling - something just uses all of the memory.
  `htop` shows no app with a huge usage of the shared memory, but I do notice gnome-shell using a lot of virtual memory (5G and climbing up).

  When I log out and log back in, the shared memory usage is reset to
  100mb and starts climbing up again. `df -h|grep tmpfs` shows a stable
  usage of 2mb, so this can't be the culprit. This leads me to believe
  that `gnome-shell` is the culprit here. I'll try to disable all addons
  and I'll try again.

  ProblemType: Bug
  DistroRelease: Ubuntu 25.10
  Package: gnome-shell 49~rc-0ubuntu1
  ProcVersionSignature: Ubuntu 6.17.0-3.3-generic 6.17.0-rc3
  Uname: Linux 6.17.0-3-generic aarch64
  ApportVersion: 2.33.1-0ubuntu2
  Architecture: arm64
  CasperMD5CheckResult: pass
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Sep 12 11:52:22 2025
  DisplayManager: gdm3
  InstallationDate: Installed on 2024-10-08 (339 days ago)
  InstallationMedia: Ubuntu-Server 24.04.1 LTS "Noble Numbat" - Release arm64 (20240827)
  ProcEnviron:
   LANG=en_US.UTF-8
   PATH=(custom, no user)
   SHELL=/usr/bin/fish
   TERM=xterm-256color
   XDG_RUNTIME_DIR=<set>
  RelatedPackageVersions: mutter-common 49~rc-0ubuntu2
  SourcePackage: gnome-shell
  UpgradeStatus: Upgraded to questing on 2025-09-12 (0 days ago)

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