Azure: Fix Azure vendor ID
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| linux (Ubuntu) |
In Progress
|
Medium
|
Tim Gardner | ||
| Focal |
Invalid
|
Medium
|
Tim Gardner | ||
| Jammy |
Invalid
|
Medium
|
Tim Gardner | ||
| Lunar |
In Progress
|
Medium
|
Tim Gardner | ||
| Mantic |
In Progress
|
Medium
|
Tim Gardner | ||
Bug Description
SRU Justification
[Impact]
The linux-azure 6.2 kernel doesn't report a correct GUEST_ID
There is a mistake in the commit (https:/
Before the commit, the good guest_id is 0x8180000602100000.
With the commit, the generated guest_id is incorrect: 0x0080000602100000, i.e. the 0x81 from bit 56~63 are dropped.
See "include/
* Bit(s)
* 63 - Indicates if the OS is Open Source or not; 1 is Open Source
* 62:56 - Os Type; Linux is 0x100 !!!!! Dexuan: this should be 0x1. I'll post a patch to LKML to fix this typo.
* 55:48 - Distro specific identification
* 47:16 - Linux kernel version number
* 15:0 - Distro specific identification
See https:/
As a result, the host thinks that the VM is not an open-source OS, and it's not Linux. Consequently, the "VM Availability" fron Azure portal is 0 (unhealthy): some users rely on the info to manage their VMs, e.g. if the VM is erroneously reported "unhealthy", the VM may be killed and re-created, and the new VM is still "unhealthy", and the VM may be killed and re-created again...
Please consider integrating the below fix ASAP. This affects regular VMs, and I think this affects CVMs as well.
The fix should be:
diff --git a/include/
@@ -135,7 +135,7 @@ union hv_reference_
*
*/
-#define HV_LINUX_VENDOR_ID 0x80 /* Canonical */
+#define HV_LINUX_VENDOR_ID 0x8180 /* Canonical */
[Test Plan]
Microsoft tested
[Regression Potential]
VMs could be misclassified.
[Other Info]
SF: #00368936
| description: | updated |
| Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote Missing required logs. | #1 |
| Changed in linux (Ubuntu): | |
| status: | New → Incomplete |
| Tim Gardner (timg-tpi) wrote | #2 |
| Changed in linux (Ubuntu Focal): | |
| assignee: | nobody → Tim Gardner (timg-tpi) |
| importance: | Undecided → Medium |
| status: | New → In Progress |
| Changed in linux (Ubuntu Jammy): | |
| assignee: | nobody → Tim Gardner (timg-tpi) |
| importance: | Undecided → Medium |
| status: | New → In Progress |
| Changed in linux (Ubuntu Lunar): | |
| assignee: | nobody → Tim Gardner (timg-tpi) |
| importance: | Undecided → Medium |
| status: | New → In Progress |
| Changed in linux (Ubuntu Mantic): | |
| assignee: | nobody → Tim Gardner (timg-tpi) |
| importance: | Undecided → Medium |
| status: | Incomplete → In Progress |
| Tim Gardner (timg-tpi) wrote | #3 |
| Changed in linux (Ubuntu Focal): | |
| status: | In Progress → Invalid |
| Changed in linux (Ubuntu Jammy): | |
| status: | In Progress → Invalid |
| description: | updated |
| Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote | #4 |
| tags: | added: kernel-spammed-lunar-linux-azure-v2 verification-needed-lunar-linux-azure |
| Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote | #5 |
| tags: | added: kernel-spammed-mantic-linux-azure-v2 verification-needed-mantic-linux-azure |
| tags: |
added: verification-done-lunar-linux-azure verification-done-mantic-linux-azure removed: verification-needed-lunar-linux-azure verification-needed-mantic-linux-azure |
| Tord Liljeholm (tord-liljeholm) wrote | #6 |
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 2036600
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.