[Azure] [NVMe] cpu soft lockup issue when run fio against nvme disks
Bug #1995408 reported by
John Cabaj
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux-azure (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
Kinetic |
Fix Released
|
Medium
|
John Cabaj |
Bug Description
SRU Justification
[Impact]
Hypervisor only allocates interrupts to happen on a single physical GPU, which can lead to CPU soft locks when using PCI NVME under heavy load.
Kinetic will get this patch via stable updates.
[Test Case]
Microsoft tested
[Where things could go wrong]
Hypervisor PCI driver may not load correctly. Patch did not apply cleanly and could lead to merge conflicts once the upstream patch is pulled in.
[Other Info]
SF: #00346549
description: | updated |
affects: | linux (Ubuntu) → linux-azure (Ubuntu) |
Changed in linux-azure (Ubuntu): | |
assignee: | nobody → John Cabaj (john-cabaj) |
Changed in linux-azure (Ubuntu): | |
status: | Incomplete → Invalid |
Changed in linux-azure (Ubuntu Kinetic): | |
assignee: | nobody → John Cabaj (john-cabaj) |
importance: | Undecided → Medium |
status: | New → In Progress |
Changed in linux-azure (Ubuntu): | |
assignee: | John Cabaj (john-cabaj) → nobody |
Changed in linux-azure (Ubuntu Kinetic): | |
status: | In Progress → Fix Committed |
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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 1995408
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.