Ubuntu
linux package

5.15 stuck at boot on c4.large

Bug #1956780 reported by Andrea Righi
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Fix Released
Undecided
Unassigned

Bug Description

[Impact]

c4.large instances are stuck at boot with kernel 5.15.0-15.15.

[Test case]

Simply deploy a c4.large instance and install the latest jammy kernel (5.15.0-15.15).

[Fix]

It looks like the offending commit is the following:

 02c70033b98b ("PCI/MSI: Mask MSI-X vectors only on success")

Reverting the commit fixes the problem.

[Regression potential]

It looks like the commit was fixing a potential breakage with broken Marvell NVME devices, so we may see crashes in presence of these devices. However, reverting the commit we are simply restoring the previous behavior, so potential regressions should be limited to these broken devices.

Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote : Missing required logs.

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1956780

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

Changed in linux (Ubuntu):
status: New → Incomplete
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package linux - 5.15.0-17.17

---------------
linux (5.15.0-17.17) jammy; urgency=medium

  * jammy/linux: 5.15.0-17.17 -proposed tracker (LP: #1957809)

 -- Andrea Righi <email address hidden> Thu, 13 Jan 2022 17:11:21 +0100

Changed in linux (Ubuntu):
status: Incomplete → Fix Released
Revision history for this message
Kleber Sacilotto de Souza (kleber-souza) wrote :

The same issue is also affecting focal and impish kernels (bug 1961968). The same solution is being applied to those kernels.

Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote :

This bug is awaiting verification that the linux-oracle-5.15/5.15.0-1006.8~20.04.1 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-focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'.

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: verification-needed-focal
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