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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:

apport-collect 1577748

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

** Tags added: trusty

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https://bugs.launchpad.net/bugs/1577748

Title:
  OOPS on wily+ for Haswell-ULT and Broadwell

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  After upgrading to the wily 4.2 kernel, we see early OOPSes similar to
  the following on Haswell-ULT and Broadwell processors:

  ------------[ cut here ]------------
  WARNING: CPU: 1 PID: 1 at /build/linux-lts-wily-MVxxD8/linux-lts-wily-4.2.0/arch/x86/mm/ioremap.c:198 __ioremap_caller+0x2a2/0x360()
  Info: mapping multiple BARs. Your kernel is fine.
  Modules linked in:
  CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.2.0-34-generic #39~14.04.1-Ubuntu
  Hardware name: Hewlett-Packard HP EliteBook Folio 1040 G1/213E, BIOS L83 Ver. 01.07 03/28/2014
   ffffffff81a91c80 ffff88023522bad8 ffffffff817b5fed 0000000000000001
   ffff88023522bb28 ffff88023522bb18 ffffffff8107799a ffffc90000cbe000
   ffffc90000cb8000 ffffc90000cb8000 0000000000006000 ffff880230297040
  Call Trace:
   [<ffffffff817b5fed>] dump_stack+0x45/0x57
   [<ffffffff8107799a>] warn_slowpath_common+0x8a/0xc0
   [<ffffffff81077a16>] warn_slowpath_fmt+0x46/0x50
   [<ffffffff81064942>] __ioremap_caller+0x2a2/0x360
   [<ffffffff81064a17>] ioremap_nocache+0x17/0x20
   [<ffffffff810393c5>] snb_uncore_imc_init_box+0x65/0x90
   [<ffffffff81037955>] uncore_pci_probe+0xd5/0x1c0
   [<ffffffff813f3a75>] local_pci_probe+0x45/0xa0
   [<ffffffff813f4c34>] ? pci_match_device+0xf4/0x120
   [<ffffffff813f4d6a>] pci_device_probe+0xca/0x110
   [<ffffffff814f6293>] driver_probe_device+0x213/0x460
   [<ffffffff814f6570>] __driver_attach+0x90/0xa0
   [<ffffffff814f64e0>] ? driver_probe_device+0x460/0x460
   [<ffffffff814f409d>] bus_for_each_dev+0x5d/0x90
   [<ffffffff814f5c0e>] driver_attach+0x1e/0x20
   [<ffffffff814f5760>] bus_add_driver+0x1d0/0x290
   [<ffffffff81d606cf>] ? uncore_cpu_setup+0x12/0x12
   [<ffffffff814f6f30>] driver_register+0x60/0xe0
   [<ffffffff813f33dc>] __pci_register_driver+0x4c/0x50
   [<ffffffff81d607b5>] intel_uncore_init+0xe6/0x2fc
   [<ffffffff81d606cf>] ? uncore_cpu_setup+0x12/0x12
   [<ffffffff8100213d>] do_one_initcall+0xcd/0x1f0
   [<ffffffff81094e00>] ? parse_args+0x120/0x470
   [<ffffffff810b7528>] ? __wake_up+0x48/0x60
   [<ffffffff81d512c5>] kernel_init_freeable+0x199/0x226
   [<ffffffff81d509a1>] ? initcall_blacklist+0xc0/0xc0
   [<ffffffff817a5f50>] ? rest_init+0x80/0x80
   [<ffffffff817a5f5e>] kernel_init+0xe/0xe0
   [<ffffffff817bd81f>] ret_from_fork+0x3f/0x70
   [<ffffffff817a5f50>] ? rest_init+0x80/0x80
  ---[ end trace 5f5beae5b9d2dc45 ]---

  the issue is fixed in upstream kernels, via two patches:

  https://lkml.org/lkml/2015/12/11/165
  http://lkml.iu.edu/hypermail/linux/kernel/1601.3/03815.html

  each is a one-liner against the mch_quirk_devices[] structure.

  [nlb-glaptop](0) $ cat /proc/version_signature 
  Ubuntu 4.2.0-35.40~14.04.1-generic 4.2.8-ckt5
  [nlb-glaptop](0) $ 

  [nlb-glaptop](0) $ lsb_release -rd
  Description:	Ubuntu 14.04 LTS
  Release:	14.04
  [nlb-glaptop](0) $ 

  [nlb-glaptop](0) $ apt-cache policy linux-generic-lts-wily
  linux-generic-lts-wily:
    Installed: 4.2.0.35.28
    Candidate: 4.2.0.35.28
    Version table:
   *** 4.2.0.35.28 0
          600 https://rapture-prod.corp.google.com/ goobuntu-trusty-testing-laptop@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/main amd64 Packages
          100 /var/lib/dpkg/status
  [nlb-glaptop](0) $

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