** Changed in: linux (Ubuntu Bionic)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1799049
Title:
[bionic]mlx5: reading SW stats through ifstat cause kernel crash
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Bionic:
Fix Committed
Bug description:
Description of problem:
Attempting to read SW stats (ifstat -x cpu_hit) on a system with probed VFs
will crash the system.
How reproducible:
Always
Steps to Reproduce:
1. Create a VF
echo 1 > /sys/bus/pci/devices/0000\:82\:00.0/sriov_numvfs
2. read SW stats:
ifstat -x cpu_hit
Actual results:
System will crash
Expected results:
No system crash
Additional info:
The reason for the crash is insufficient check on the helper that determines
if a netdev is vf rep.
will crash:
$ ifstat -x cpu_hit
will not crash:
$ ifstat -x cpu_hit $VF_REP
$ ifstat -x cpu_hit $UPLINK_REP
We already have a fix for this issue, and it is accepted upstream.
https://patchwork.ozlabs.org/patch/935193/
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