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[Launchpad Bug Tracker <1632049@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 4.8.0-30.32

---------------
linux (4.8.0-30.32) yakkety; urgency=low

  * CVE-2016-8655 (LP: #1646318)
    - packet: fix race condition in packet_set_ring

 -- Brad Figg <brad.figg@xxxxxxxxxxxxx>  Thu, 01 Dec 2016 08:02:53 -0800

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

** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2016-8655

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https://bugs.launchpad.net/bugs/1632049

Title:
  PSL data cache should be flushed before resetting CAPI adapter

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  Fix Released
Status in linux source package in Yakkety:
  Fix Released

Bug description:
  ---Problem Description---
  The PSL data cache should be flushed before resetting a CAPI adapter.
  If the PSL data cache holds dirty cache line when it is reset, the host trying to access that memory when the link is down may face a Uncorrectable Error (UE), forcing a reboot of the system.
   
  ---uname output---
  Linux freak 4.4.0-38-generic #57-Ubuntu SMP Tue Sep 6 15:40:06 UTC 2016 ppc64le ppc64le ppc64le GNU/Linux
   
  ---Additional Hardware Info---
  CAPI adapter needed + AFU image using the PSL cache (e.g. afu_directed memcpy) 

   
  Machine Type = Tuleta 
    
  ---Steps to Reproduce---
   There's some randomness to it, but triggering a memcpy test + card reset in a loop can produce it:

  memcpy_afu_ctx -p100 -l1000
  echo 1 > /sys/class/cxl/card0/reset
  Fix is already upstream under commit ID:
  aaa2245ed836824f21f8e42e0ab63b1637d1cb20 
  "cxl: Flush PSL cache before resetting the adapter"

  We would like the fix released for both 16.04 and 16.10 please.

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