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** Branch linked: lp:ubuntu/precise-proposed/linux-lts-trusty

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https://bugs.launchpad.net/bugs/1353105

Title:
  bnx2x crashes on bxn2x_tpa_start

Status in “linux” package in Ubuntu:
  Fix Released
Status in “linux” source package in Trusty:
  Fix Committed
Status in “linux” source package in Utopic:
  Fix Released

Bug description:
  [Impact]

  Random crashes when using the bnx2x driver on power 8

  [Test Case]

  heavy use of the bnx2x driver on power 8

  [Regression Potential]

  introduces a simple memory barrier and is therefore very low risk, any
  such risk would normally affect performanc e not function.

  ===

  ---Problem Description---
  bnx2x may cause crashes or stop working because of a missing memory barrier.

  Messages like the following appear on the log:

  bnx2x: [bnx2x_tpa_start:392(eth7)]start of bin not in stop [0]

  ---uname output---
  Linux ubuntu 3.13.0-32-generic #57-Ubuntu SMP Tue Jul 15 03:50:31 UTC 2014 ppc64le ppc64le ppc64le GNU/Linux

  ---Additional Hardware Info---
  0001:00:03.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM57800 1/10 Gigabit Ethernet (rev 10)
  0001:00:03.1 Ethernet controller: Broadcom Corporation NetXtreme II BCM57800 1/10 Gigabit Ethernet (rev 10)
  0001:00:03.2 Ethernet controller: Broadcom Corporation NetXtreme II BCM57800 1/10 Gigabit Ethernet (rev 10)
  0001:00:03.3 Ethernet controller: Broadcom Corporation NetXtreme II BCM57800 1/10 Gigabit Ethernet (rev 10)

  Machine Type = model           : IBM pSeries (emulated by qemu)

  ---Steps to Reproduce---
   Send lots of traffic on a busy workload.

  Fix for reported issue upstream commit 9aaae044abe95de182d09004cc3fa181bf22e6e0
  Fix for EEH related issue upstream commit 0c0e63410a393aae4b615849625f539db775d586

  We would like to get those applied to both Ubuntu 14.04 updates and
  Ubuntu 14.10, please.

  Cascardo.

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