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[Launchpad Bug Tracker <1539102@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 4.4.0-4.19

---------------
linux (4.4.0-4.19) xenial; urgency=low

  * update ZFS and SPL to 0.6.5.4 (LP: #1542296)
    - [Config] update spl/zfs version
    - SAUCE: (noup) Update spl to 0.6.5.4-0ubuntu2, zfs to 0.6.5.4-0ubuntu1
    - [Config] reconstruct -- drop links for zfs userspace components
    - [Config] reconstruct -- drop links for zfs userspace components -- restore spec links

  * recvmsg() fails SCM_CREDENTIALS request with EOPNOTSUPP. (LP: #1540731)
    - Revert "af_unix: Revert 'lock_interruptible' in stream receive code"

  * lxc: ADT exercise test failing with linux-4.4.0-3.17  (LP: #1542049)
    - Revert "UBUNTU: SAUCE: apparmor: fix sleep from invalid context"

  * WARNING: at /build/linux-lts-wily-W0lTWH/linux-lts-wily-4.2.0/net/core/skbuff.c:4174 (Travis IB) (LP: #1541326)
    - SAUCE: IB/IPoIB: Do not set skb truesize since using one linearskb

  * backport Microsoft Precision Touchpad palm rejection patch (LP: #1541671)
    - HID: multitouch: enable palm rejection if device implements confidence usage

  * [Ubuntu 16.04] Update qla2xxx driver for POWER (QLogic) (LP: #1541456)
    - qla2xxx: Remove unavailable firmware files
    - qla2xxx: Enable Extended Logins support
    - qla2xxx: Enable Exchange offload support.
    - qla2xxx: Enable Target counters in DebugFS.
    - qla2xxx: Add FW resource count in DebugFS.
    - qla2xxx: Added interface to send explicit LOGO.
    - qla2xxx: Delete session if initiator is gone from FW
    - qla2xxx: Wait for all conflicts before ack'ing PLOGI
    - qla2xxx: Replace QLA_TGT_STATE_ABORTED with a bit.
    - qla2xxx: Remove dependency on hardware_lock to reduce lock contention.
    - qla2xxx: Add irq affinity notification
    - qla2xxx: Add selective command queuing
    - qla2xxx: Move atioq to a different lock to reduce lock contention
    - qla2xxx: Disable ZIO at start time.
    - qla2xxx: Set all queues to 4k
    - qla2xxx: Check for online flag instead of active reset when transmitting responses
    - scsi: qla2xxxx: avoid type mismatch in comparison

  * [Hyper-V] PCI Passthrough (LP: #1541120)
    - x86/irq: Export functions to allow MSI domains in modules
    - genirq/msi: Export functions to allow MSI domains in modules

  * Update lpfc driver to 11.0.0.10 (LP: #1541592)
    - lpfc: Fix FCF Infinite loop in lpfc_sli4_fcf_rr_next_index_get.
    - lpfc: Fix the FLOGI discovery logic to comply with T11 standards
    - lpfc: Fix RegLogin failed error seen on Lancer FC during port bounce
    - lpfc: Fix driver crash when module parameter lpfc_fcp_io_channel set to 16
    - lpfc: Fix crash in fcp command completion path.
    - lpfc: Modularize and cleanup FDMI code in driver
    - lpfc: Fix RDP Speed reporting.
    - lpfc: Fix RDP ACC being too long.
    - lpfc: Make write check error processing more resilient
    - lpfc: Use new FDMI speed definitions for 10G, 25G and 40G FCoE.
    - lpfc: Fix mbox reuse in PLOGI completion
    - lpfc: Fix external loopback failure.
    - lpfc: Add logging for misconfigured optics.
    - lpfc: Delete unnecessary checks before the function call "mempool_destroy"
    - lpfc: Use kzalloc instead of kmalloc
    - lpfc: Update version to 11.0.0.10 for upstream patch set

  * Miscellaneous Ubuntu changes
    - [Config] CONFIG_ARM64_VA_BITS=48
    - [Config] Fixed Vcs-Git

  * Miscellaneous upstream changes
    - cxl: Fix possible idr warning when contexts are released
    - cxl: use correct operator when writing pcie config space values
    - cxlflash: drop unlikely before IS_ERR_OR_NULL
    - cxl: Fix DSI misses when the context owning task exits
    - cxlflash: Removed driver date print
    - cxlflash: Fix to resolve cmd leak after host reset
    - cxlflash: Resolve oops in wait_port_offline
    - cxlflash: Enable device id for future IBM CXL adapter
    - cxl: fix build for GCC 4.6.x
    - cxl: use -Werror only with CONFIG_PPC_WERROR
    - cxl: Enable PCI device ID for future IBM CXL adapter

 -- Andy Whitcroft <apw@xxxxxxxxxxxxx>  Fri, 05 Feb 2016 14:58:51 +0000

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

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https://bugs.launchpad.net/bugs/1539102

Title:
  EPOW related RTAS event messages in kernel logs

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Wily:
  Fix Committed
Status in linux source package in Xenial:
  Fix Released

Bug description:
  Problem Description
  ===============================
  EPOW related RTAS event messages in kernel logs 
   

  Machine Type = POWER8 
   
  Steps to Reproduce
  =============================
   1) Install Ubuntu14.04 on a Power VM LPAR.
  2) Post reboot following events are logged into dmesg & /var/log/syslog

  [216112.739470] Non critical power or cooling issue cleared
  [216122.992606] RTAS: event: 187589, Type: EPOW, Severity: 1
  [216122.992609] Non critical power or cooling issue cleared
  [216129.240731] RTAS: event: 187590, Type: EPOW, Severity: 1
  [216129.240733] Non critical power or cooling issue cleared
  [216141.612689] RTAS: event: 187591, Type: EPOW, Severity: 1
  [216141.612691] Non critical power or cooling issue cleared
  [216147.830578] RTAS: event: 187592, Type: EPOW, Severity: 1
  [216147.830580] Non critical power or cooling issue cleared
  [216158.334408] RTAS: event: 187593, Type: EPOW, Severity: 1
  [216158.334410] Non critical power or cooling issue cleared
  [216199.883138] RTAS: event: 187594, Type: EPOW, Severity: 1
  [216199.883140] Non critical power or cooling issue cleared
  [216244.596335] RTAS: event: 187595, Type: EPOW, Severity: 1
  [216244.596337] Non critical power or cooling issue cleared
  [216250.853514] RTAS: event: 187596, Type: EPOW, Severity: 1
  [216250.853516] Non critical power or cooling issue cleared
  [216263.319986] RTAS: event: 187597, Type: EPOW, Severity: 1
  [216263.319989] Non critical power or cooling issue cleared
  [216271.438925] RTAS: event: 187598, Type: EPOW, Severity: 1

  
  The log is filled with several such messages along with 

  RTAS: event: 13884, Type: Platform Error, Severity: 2
  RTAS: event: 13885, Type: Platform Error, Severity: 2
  RTAS: event: 13886, Type: Platform Error, Severity: 2
  RTAS: event: 13887, Type: Platform Error, Severity: 2
  RTAS: event: 13888, Type: Platform Error, Severity: 2
  RTAS: event: 13889, Type: Platform Error, Severity: 2
  RTAS: event: 13890, Type: Platform Error, Severity: 2
  RTAS: event: 13891, Type: Platform Error, Severity: 2

  Regrads
  Praveen

  == Comment: #2 - VASANT HEGDE <hegdevasant@xxxxxxxxxx> -  ==
  Below upstream patch fixes this issue..I believe this will apply cleanly on top of Ubuntu 14.04.04 kernel.

  
  commit b4af279a7cba5cc1f665485e8ecdf272f1ba0cc5
  Author: Vipin K Parashar <vipin@xxxxxxxxxxxxxxxxxx>
  Date:   Tue Dec 1 16:43:42 2015 +0530

      powerpc/pseries: Limit EPOW reset event warnings
      
      Kernel prints respective warnings about various EPOW events for
      user information/action after parsing EPOW interrupts. At times
      below EPOW reset event warning is seen to be flooding kernel log
      over a period of time.

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