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[Bug 2085092] [NEW] System hang when running memory/memory_stress_ng test

Public bug reported:

[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):

Link: https://lore.kernel.org/linux-
pci/20241001083438.10070-2-jhp@endlessos.org/


[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

[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.

** Affects: hwe-next
Importance: Undecided
Status: New

** Affects: linux (Ubuntu)
Importance: Undecided
Status: Invalid

** Affects: linux (Ubuntu Noble)
Importance: Undecided
Assignee: En-Wei Wu (rickywu)
Status: In Progress


** Tags: oem-priority originate-from-2076860 somerville

** Also affects: linux (Ubuntu Noble)
Importance: Undecided
Status: New

** Changed in: linux (Ubuntu Noble)
Assignee: (unassigned) => En-Wei Wu (rickywu)

** Changed in: linux (Ubuntu Noble)
Status: New => In Progress

** Changed in: linux (Ubuntu)
Status: New => Invalid

** Tags added: oem-priority originate-from-2076860 somerville

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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 Endlessos's patchset from https://lore.kernel.org (has been reviewed):

Link: https://lore.kernel.org/linux-
pci/20241001083438.10070-2-jhp@endlessos.org/

[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

[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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