a critical typo in the code managing the ASPM settings for PCI Express devices
Bug #2071889 reported by
AceLan Kao
This bug affects 3 people
Affects | Status | Importance | Assigned to | Milestone | ||
---|---|---|---|---|---|---|
linux (Ubuntu) | Status tracked in Oracular | |||||
Noble |
Fix Released
|
Medium
|
AceLan Kao | |||
Oracular |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
[Impact]
The typo in the original code led to the PCI_EXP_LNKCTL register values being swapped between the parent PCI device and its child device.
It may lead to incorrect power state, device malfunction on system resume, or potential data loss or system stability issues.
[Fix]
Kaiheng submitted a patch to fix the issue and has been included in v6.9 mainline kernel.
f3d049b35b01 PCI/ASPM: Restore parent state to parent, child state to child
[Test]
There is no test cases for the issue now.
[Where problems may occur]
It fixes the typo and should not introduce any regression.
CVE References
Changed in linux (Ubuntu Oracular): | |
status: | New → Fix Released |
Changed in linux (Ubuntu Noble): | |
status: | New → In Progress |
assignee: | nobody → AceLan Kao (acelankao) |
description: | updated |
description: | updated |
Changed in linux (Ubuntu Noble): | |
importance: | Undecided → Medium |
status: | In Progress → Fix Committed |
tags: | added: regression-update |
tags: |
added: verification-done-noble-linux-lowlatency removed: verification-needed-noble-linux-lowlatency |
To post a comment you must log in.
Thank you Acelan Kao. Will there be a kernel build for noble in -proposed?