Need backport short kernel patch for oops on Wily kernels with haswell/broadwell

[Nick Black]

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1577748 should have
all relevant information. Thanks!

On Mon, May 2, 2016 at 3:16 PM, Joseph Salisbury <
joseph.salisbury at canonical.com> wrote:

> On 04/28/2016 09:08 PM, Nick Black wrote:
> > Sorry, the other entry is Haswell-ULT, added by Josh Boyer:
> >
> >
> https://github.com/masahir0y/linux-yamada/commit/ed1f0eeebaeeb7f790e9e7642116a208581e5bfc
> > or http://lkml.iu.edu/hypermail/linux/kernel/1601.3/03815.html
> >
> > it was pulled into 4.5-rc3 from the linux-pm tree.
> >
> > i'll go ahead and open the bug, thanks!
> >
> > On Thu, Apr 28, 2016 at 7:02 PM, Kamal Mostafa <kamal at canonical.com
> > <mailto:kamal at canonical.com>> wrote:
> >
> >     On Wed, Apr 27, 2016 at 01:06:47PM -0400, Nick Black wrote:
> >     > Hello there!
> >     >
> >     > We're seeing a lot of (seemingly harmless) oops using Wily 4.2
> >     kernels with
> >     > Haswell-ULT and Broadwell x86 processors. The fix seems a simple
> >     backport
> >     > from 4.5, adding two elements to the mch_quirk_devices[] table from
> >     > drivers/pnp/quirks.c.
> >     > I've included a sample oops below from a Haswell-ULT machine.
> >     The most
> >     > recent patch appears to be here:
> >     >
> >     >   https://lkml.org/lkml/2015/12/11/165
> >     >
> >     > Could we get this included in the Wily kernel? Thanks!
> >     >
> >
> >     Hi Nick-
> >
> >     That patch looks fine and will apply to Vivid, Wily, and Xenial.
> >
> >     However, you mention "adding two elements" but that patch only
> >     adds one:
> >     +       0x1604, /* Broadwell */
> >     Clarify that please, and ...
> >
> >     Please file a launchpad bug against the 'linux' package so we can
> >     track
> >     the issue and have you verify the fix when we apply it.
> >
> >     Thanks!
> >
> >      -Kamal
> >
> >     >
> >     > ------------[ 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 ]---
> >
> >     > --
> >     > kernel-team mailing list
> >     > kernel-team at lists.ubuntu.com <mailto:kernel-team at lists.ubuntu.com>
> >     > https://lists.ubuntu.com/mailman/listinfo/kernel-team
> >
> >
> >
> >
> Hi Nick,
>
> Did you happen to open a bug yet?  If so, can you reply with the bug
> number?
>
> Thanks,
>
> Joe
>
>
>
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