** Description changed:

  [Impact]
  memory/memory_stress_ng test failed when swapping due to the ASPM issue with 
VMD device.
  
  [Fix]
- Backport the Endlessos's patchset from https://lore.kernel.org (has been 
reviewed):
+ Backport the two of the three patches from Endlessos's patchset linux-next:
  
- Link: https://lore.kernel.org/linux-
- pci/20241001083438.10070-2-...@endlessos.org/
- 
- [PATCH v12 0/3] PCI: vmd: Enable PCI PM's L1 substates of remapped PCIe Root 
Port and NVMe 
+ [PATCH v12 0/3] PCI: vmd: Enable PCI PM's L1 substates of remapped PCIe Root 
Port and NVMe
  [PATCH v12 1/3] PCI: vmd: Set PCI devices to D0 before enable PCI PM's L1 
substates
  [PATCH v12 2/3] PCI/ASPM: Add notes about enabling PCI-PM L1SS to 
pci_enable_link_state(_locked)
- [PATCH v12 3/3] PCI/ASPM: Make pci_save_aspm_l1ss_state save both child and 
parent's L1SS configuration
+ 
+ The third patch in the patchset isn't merged, but it doesn't have an
+ effect on our side.
  
  [Test Plan]
  1. Boot up Ubuntu OS
  2. $ checkbox-cli run 
com.canonical.certification::stress/store_and_change_oomd_config
  3. $ checkbox-cli run com.canonical.certification::memory/memory_stress_ng
  
  [Where problems could occur]
  May cause ASPM regression.

** Description changed:

  [Impact]
  memory/memory_stress_ng test failed when swapping due to the ASPM issue with 
VMD device.
  
  [Fix]
- Backport the two of the three patches from Endlessos's patchset linux-next:
+ Backport the two patches from linux-next fixes the issue:
  
- [PATCH v12 0/3] PCI: vmd: Enable PCI PM's L1 substates of remapped PCIe Root 
Port and NVMe
- [PATCH v12 1/3] PCI: vmd: Set PCI devices to D0 before enable PCI PM's L1 
substates
- [PATCH v12 2/3] PCI/ASPM: Add notes about enabling PCI-PM L1SS to 
pci_enable_link_state(_locked)
- 
- The third patch in the patchset isn't merged, but it doesn't have an
- effect on our side.
+ d66041063192 PCI: vmd: Set devices to D0 before enabling PM L1 Substates
+ e1714f3b1f4d PCI/ASPM: Add notes about enabling PCI-PM L1SS to 
pci_enable_link_state(_locked)
  
  [Test Plan]
  1. Boot up Ubuntu OS
  2. $ checkbox-cli run 
com.canonical.certification::stress/store_and_change_oomd_config
  3. $ checkbox-cli run com.canonical.certification::memory/memory_stress_ng
  
  [Where problems could occur]
  May cause ASPM regression.

-- 
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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/2085092

Title:
  System hang when running memory/memory_stress_ng test

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Invalid
Status in linux source package in Noble:
  In Progress

Bug description:
  [Impact]
  memory/memory_stress_ng test failed when swapping due to the ASPM issue with 
VMD device.

  [Fix]
  Backport the two patches from linux-next fixes the issue:

  d66041063192 PCI: vmd: Set devices to D0 before enabling PM L1 Substates
  e1714f3b1f4d PCI/ASPM: Add notes about enabling PCI-PM L1SS to 
pci_enable_link_state(_locked)

  [Test Plan]
  1. Boot up Ubuntu OS
  2. $ checkbox-cli run 
com.canonical.certification::stress/store_and_change_oomd_config
  3. $ checkbox-cli run com.canonical.certification::memory/memory_stress_ng

  [Where problems could occur]
  May cause ASPM regression.

To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/2085092/+subscriptions


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