Ubuntu
linux-oem-6.1 package

Fix system boot hang caused by devlink

  1. Jammy (22.04)
  2. Bug #2036515
Bug #2036515 reported by Kai-Heng Feng
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
HWE Next
New
Undecided
Unassigned
linux (Ubuntu)
Fix Released
Undecided
Unassigned
Jammy
Won't Fix
Undecided
Unassigned
Lunar
Confirmed
Medium
Kai-Heng Feng
linux-oem-6.1 (Ubuntu)
Invalid
Undecided
Unassigned
Jammy
Fix Committed
Medium
Unassigned
Lunar
Invalid
Undecided
Unassigned

Bug Description

[Impact]
System stuck at boot when Intel 7560 is in use, because devlink
is waiting for reference to be released.

[Fix]
Commit "devlink: remove the registration guarantee of references"
weakens the refcount requirement for devlink {,un}registering,

[Test]
System reboots over 2000 times when the fix is applied.

[Where problems could occur]
devlink is part of net core API, so it has many users, therefore all of
devlink users can be affected by this fix. However, all the devlink
users can be affected by the same issue (i.e. waiting for reference to
decrease to 0), hence this is still a desirable fix.

Kai-Heng Feng (kaihengfeng)
Changed in linux-oem-6.1 (Ubuntu Jammy):
status: New → Confirmed
importance: Undecided → Medium
Changed in linux-oem-6.1 (Ubuntu):
status: New → Invalid
Kai-Heng Feng (kaihengfeng)
tags: added: oem-priority originate-from-2032592 stella
Revision history for this message
Timo Aaltonen (tjaalton) wrote :

Is all of this included in 6.5? Even if so, it would be nice to have the 'linux' tab opened and marked fix-released so that it's clear for the reviewer.

Changed in linux-oem-6.1 (Ubuntu Jammy):
status: Confirmed → Fix Committed
Kai-Heng Feng (kaihengfeng)
Changed in linux (Ubuntu Jammy):
status: New → Won't Fix
Changed in linux (Ubuntu):
status: New → Fix Released
Changed in linux-oem-6.1 (Ubuntu Lunar):
status: New → Invalid
Changed in linux (Ubuntu Lunar):
status: New → Confirmed
importance: Undecided → Medium
assignee: nobody → Kai-Heng Feng (kaihengfeng)
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote :

This bug is awaiting verification that the linux-oem-6.1/6.1.0-1025.25 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-oem-6.1' to 'verification-done-jammy-linux-oem-6.1'. If the problem still exists, change the tag 'verification-needed-jammy-linux-oem-6.1' to 'verification-failed-jammy-linux-oem-6.1'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

tags: added: kernel-spammed-jammy-linux-oem-6.1-v2 verification-needed-jammy-linux-oem-6.1
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