SRU: https://lists.ubuntu.com/archives/kernel-
team/2022-November/134769.html (oem-6.0)
** Description changed:
+ [SRU Justification]
+
+ [Impact]
+
+ Depending on module load order there is a possibility that the AMT mode
+ selected initially by PMF will be incorrect if thinkpad_acpi has loaded
+ first.
+
+ [Fix]
+
+ To avoid this issue adjust the initialization order in the PMF driver.
+ Commit 22ee98cb696e ("platform/x86/amd/pmf: install notify handler after
+ acpi init") takes the work, but it depends on two more commits that were
+ tagged as fixes for commits landed in bug 1987670.
+
+ [Test Case]
+
+ 1. blacklist both amd-pmf and thinkpad-acpi
+ 2. load thinkpad-acpi first
+ 3. Load amd-pmf with dynamic debugging enabled
+
+ [Where problems could occur]
+
+ The first two parts are trivial, and the third one may have to receive
+ tests to find out if it has some other interference due to the load
+ order.
+
+ [Other Info]
+
+ AMD PMF targets oem-6.0 or above and has included in v6.1-rc1.
+
+ ========== original bug report ==========
+
Depending on module load order there is a possibility that the AMT mode
selected initially by PMF will be incorrect if thinkpad_acpi has loaded
first.
To avoid this issue adjust the initialization order in the PMF driver.
https://github.com/torvalds/linux/commit/22ee98cb696e95b05a188756d479d382d93559ef
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-oem-6.0 in Ubuntu.
https://bugs.launchpad.net/bugs/1993242
Title:
Fix a race condition with AMD PMF and Thinkpad-ACPI
Status in HWE Next:
New
Status in linux-oem-6.0 package in Ubuntu:
Invalid
Status in linux-oem-6.0 source package in Jammy:
In Progress
Status in linux-oem-6.0 source package in Kinetic:
Invalid
Status in linux-oem-6.0 source package in Lunar:
Invalid
Bug description:
[SRU Justification]
[Impact]
Depending on module load order there is a possibility that the AMT mode
selected initially by PMF will be incorrect if thinkpad_acpi has loaded
first.
[Fix]
To avoid this issue adjust the initialization order in the PMF driver.
Commit 22ee98cb696e ("platform/x86/amd/pmf: install notify handler after
acpi init") takes the work, but it depends on two more commits that were
tagged as fixes for commits landed in bug 1987670.
[Test Case]
1. blacklist both amd-pmf and thinkpad-acpi
2. load thinkpad-acpi first
3. Load amd-pmf with dynamic debugging enabled
[Where problems could occur]
The first two parts are trivial, and the third one may have to receive
tests to find out if it has some other interference due to the load
order.
[Other Info]
AMD PMF targets oem-6.0 or above and has included in v6.1-rc1.
========== original bug report ==========
Depending on module load order there is a possibility that the AMT
mode selected initially by PMF will be incorrect if thinkpad_acpi has
loaded first.
To avoid this issue adjust the initialization order in the PMF driver.
https://github.com/torvalds/linux/commit/22ee98cb696e95b05a188756d479d382d93559ef
To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1993242/+subscriptions
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