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 1806845
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
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https://bugs.launchpad.net/bugs/1806845
Title:
The unsigned vf->num_mac will be decreased to below zero and cause the
VF port not working
Status in linux package in Ubuntu:
Incomplete
Bug description:
The unsigned vf->num_mac in Ubuntu18.04.1 LTS i40e driver 2.1.14-k
will be decreased to below zero when VF is trying to delete the MAC
address which is added by PF and then add a new MAC address. And after
this issue happens, VF won't be able to send/receive packets, and
excepting for broadcast address, mac_filter_hash is empty in dumped
VSI info.
Ubuntu18.04.1 LTS kernel: 4.15.0-38-generic
i40e driver: 2.1.14-k
i40evf driver: 3.0.1-k
Actual results:
The unsigned vf->num_mac should decrease to below zero. The VF port doesn't
work.
Expected results:
The unsigned vf->num_mac range is from 0 to 65535;
or the vf is not allowed to delete the MAC addr which is added by PF
Corresponding Patch is required for resolving this i40e driver issue
i40e: Prevent deleting MAC address from VF when set by PF
https://patchwork.ozlabs.org/patch/963036/
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