** Changed in: linux (Ubuntu Lunar)
Status: Confirmed => Fix Committed
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https://bugs.launchpad.net/bugs/2036377
Title:
Fix RCU warning on AMD laptops
Status in HWE Next:
New
Status in linux package in Ubuntu:
Confirmed
Status in linux-oem-6.1 package in Ubuntu:
Invalid
Status in linux-oem-6.5 package in Ubuntu:
Invalid
Status in linux source package in Jammy:
Won't Fix
Status in linux-oem-6.1 source package in Jammy:
Confirmed
Status in linux-oem-6.5 source package in Jammy:
Confirmed
Status in linux source package in Lunar:
Fix Committed
Status in linux-oem-6.1 source package in Lunar:
Invalid
Status in linux-oem-6.5 source package in Lunar:
Invalid
Status in linux source package in Mantic:
Confirmed
Status in linux-oem-6.1 source package in Mantic:
Invalid
Status in linux-oem-6.5 source package in Mantic:
Invalid
Bug description:
[Impact]
Scary kernel splat about RCU can be observed everytime laptop resumes
from suspend.
[Fix]
Use non-atomic notifier for power supply change to relax the constraint.
[Test]
Once the fix is applied, no more RCU warning can be found after several
suspend/resume cycle.
[Where problems could occur]
Essentially no regression potential. Atomic notifier should be used by
core kernel, and things like power supply doesn't need to be atomic
anyway.
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