Fix kdump failures
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Bionic |
Fix Released
|
Medium
|
Tim Gardner | ||
Focal |
Fix Released
|
Medium
|
Tim Gardner | ||
Groovy |
Fix Released
|
Medium
|
Tim Gardner | ||
Hirsute |
Fix Released
|
Medium
|
Tim Gardner | ||
linux-azure (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Bionic |
Invalid
|
Undecided
|
Unassigned | ||
Focal |
Fix Released
|
Medium
|
Unassigned | ||
Groovy |
Fix Released
|
Medium
|
Unassigned | ||
Hirsute |
Fix Released
|
Medium
|
Unassigned | ||
linux-azure-4.15 (Ubuntu) |
New
|
Undecided
|
Unassigned | ||
Bionic |
Fix Released
|
Undecided
|
Unassigned | ||
Focal |
Invalid
|
Undecided
|
Unassigned | ||
Groovy |
Invalid
|
Undecided
|
Unassigned | ||
Hirsute |
Invalid
|
Undecided
|
Unassigned |
Bug Description
SRU Justification
[Impact]
Microsoft relayed a customer report of failures when trying to take a kdump.
These 3 patches fix the issue:
https:/
https:/
https:/
Patch #1 solves a problem where the “Unable to send packet via vmbus” message is output continuously. But with that problem fixed, the second problem can occur where the kdump kernel panics due to receiving an unexpected VMbus UNLOAD complete message.
Patch #2 prevents the UNLOAD complete message from ever occurring in the kdump kernel. But if the UNLOAD complete message does occur at some unexpected time, Patch #3 prevents it from causing a panic.
These patches seem worthy of application to all affected master kernels.
[Test Plan]
Cause a guest kernel to crash and successfully acquire a kdump.
[Where problems could occur]
The extended Hyper-V wait while flushing could cause side effects.
[Other Info]
SF: #00310145
https:/
description: | updated |
tags: | added: bot-stop-nagging |
Changed in linux (Ubuntu Focal): | |
status: | New → In Progress |
importance: | Undecided → Medium |
Changed in linux (Ubuntu Groovy): | |
status: | New → In Progress |
importance: | Undecided → Medium |
Changed in linux (Ubuntu Hirsute): | |
status: | Incomplete → In Progress |
importance: | Undecided → Medium |
Changed in linux (Ubuntu Focal): | |
assignee: | nobody → Tim Gardner (timg-tpi) |
Changed in linux (Ubuntu Groovy): | |
assignee: | nobody → Tim Gardner (timg-tpi) |
Changed in linux (Ubuntu Hirsute): | |
assignee: | nobody → Tim Gardner (timg-tpi) |
Changed in linux-azure (Ubuntu Focal): | |
importance: | Undecided → Medium |
status: | New → Fix Committed |
Changed in linux-azure (Ubuntu Groovy): | |
importance: | Undecided → Medium |
status: | New → Fix Committed |
Changed in linux-azure (Ubuntu Hirsute): | |
importance: | Undecided → Medium |
status: | New → Fix Committed |
Changed in linux-azure (Ubuntu Bionic): | |
status: | New → Invalid |
Changed in linux-azure-4.15 (Ubuntu Focal): | |
status: | New → Invalid |
Changed in linux-azure-4.15 (Ubuntu Groovy): | |
status: | New → Invalid |
Changed in linux-azure-4.15 (Ubuntu Hirsute): | |
status: | New → Invalid |
Changed in linux-azure-4.15 (Ubuntu Bionic): | |
status: | New → Fix Committed |
Changed in linux (Ubuntu Bionic): | |
status: | In Progress → Fix Committed |
Changed in linux (Ubuntu Focal): | |
status: | In Progress → Fix Committed |
Changed in linux (Ubuntu Groovy): | |
status: | In Progress → Fix Committed |
Changed in linux (Ubuntu Hirsute): | |
status: | In Progress → Fix Committed |
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 1927518
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.