group.of.nepali.translators team mailing list archive

[Tim Gardner <tim.gardner@xxxxxxxxxxxxx>]

https://lists.ubuntu.com/archives/kernel-team/2017-January/081840.html

** Changed in: linux (Ubuntu Yakkety)
       Status: New => In Progress

** Changed in: linux (Ubuntu Yakkety)
     Assignee: (unassigned) => Tim Gardner (timg-tpi)

** Also affects: linux (Ubuntu Zesty)
   Importance: High
     Assignee: Canonical Kernel Team (canonical-kernel-team)
       Status: Triaged

** Changed in: linux (Ubuntu Zesty)
       Status: Triaged => Fix Released

** Changed in: linux (Ubuntu Zesty)
     Assignee: Canonical Kernel Team (canonical-kernel-team) => (unassigned)

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https://bugs.launchpad.net/bugs/1625318

Title:
  Ubuntu 16.10 KVM SRIOV: if enable sriov while ping flood is running
  ping will stop working

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  In Progress
Status in linux source package in Yakkety:
  In Progress
Status in linux source package in Zesty:
  Fix Released

Bug description:
  ---Problem Description---
  If I enable SRIOV in a Mellanox CX4 card while a PF interface is doing something like a ping flood. The PF interface will stop pinging. 
  We found a small window were MMIO are bein g disabled during pci_enable_sriov is called. 
   
  ---uname output---
  4.4.0-30-generic
   
  ---Additional Hardware Info---
  It needs a Mellanox CX4 SRIOV capable to recreate this issue 

  Machine Type = P8 
    
  ---Steps to Reproduce---
   just configure the IP address of PF interface and start like a ping flood to that interface.
  then do this echo to enable SRIOV on the PF. 
  echo 8 > /sys/class/net/enP1p1s0f0/device/sriov_numvfs
  Then you will notice the ping flood will stop. 
   
  A patch that will fix this issue was sent for review:
  https://patchwork.ozlabs.org/patch/671517/

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