Patches submitted:
https://lists.ubuntu.com/archives/kernel-team/2022-October/134324.html
Focal test kernel:
https://kernel.ubuntu.com/~rtg/focal-azure-vf-race-lp1994974/5.4.0-1096.102~lp1994974.1/
** Also affects: linux-azure (Ubuntu Kinetic)
Importance: Undecided
Status: Fix Released
** Changed in: linux-azure (Ubuntu Kinetic)
Importance: Undecided => Medium
** Changed in: linux-azure (Ubuntu Kinetic)
Status: Fix Released => In Progress
** Changed in: linux-azure (Ubuntu Kinetic)
Assignee: (unassigned) => Tim Gardner (timg-tpi)
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https://bugs.launchpad.net/bugs/1994974
Title:
Azure: hv_netvsc: Fix race between VF offering and VF association
message from host
Status in linux-azure package in Ubuntu:
In Progress
Status in linux-azure source package in Focal:
In Progress
Status in linux-azure source package in Jammy:
In Progress
Status in linux-azure source package in Kinetic:
In Progress
Bug description:
SRU Justification
[Impact]
During vm boot, there might be possibility that vf registration call
comes before the vf association from host to vm.
And this might break netvsc vf path, this is in order to prevent the
same block vf registration until vf bind message comes from host.
[Test Plan]
Microsoft tested
[Where things could go wrong]
The 5.4 backport patch could hang waiting for a VF addition to
complete.
[Other Info]
SF: #00347129
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