From mboxrd@z Thu Jan  1 00:00:00 1970
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MIME-Version: 1.0
From: Patel, Vedang <vedang.patel@intel.com>
To: lkp@lists.01.org
Subject: Re: [ASoC] 91c1832579: BUG: unable to handle kernel NULL pointer dereference
Date: Fri, 08 Jul 2016 18:21:12 +0000
Message-ID: <1468002072.15837.29.camel@intel.com>
In-Reply-To: <20160708024233.GG31459@yexl-desktop>
List-Id: <oe-lkp.lists.linux.dev>

--===============3334227530461254826==
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: quoted-printable

Thanks Xiaolong for testing it,=C2=A0

I will submit a fix to the alsa-devel mailing list CCing all the
relavant people.=C2=A0

-Vedang

On Fri, 2016-07-08 at 10:42 +0800, Ye Xiaolong wrote:
> On Fri, Jul 08, 2016 at 10:37:41AM +0800, Ye Xiaolong wrote:
> > =

> > On Fri, Jul 08, 2016 at 09:06:58AM +0800, Patel, Vedang wrote:
> > > =

> > > Hi Xialong.=C2=A0
> > > =

> > > Is it possible for you try the attached change and see if you are
> > > still
> > > able to reproduce the issue?
> > > =

> > Hi, Patel
> > =

> > Tried 3-times boot test with your fix patch applied on 91c18325
> > ("ASoC: Intel:
> > Skylake: Increase loglevel of debug messages."), no kernel panic
> > found.
> > =

> Attached the dmesg for the test.
> =

> > =

> > Tested-by: Ye Xiaolong <xiaolong.ye@intel.com>
> > =

> > Thanks,
> > Xiaolong
> > =

> > > =

> > > Thanks,
> > > Vedang
> > > =

> > > On Wed, 2016-07-06 at 18:52 -0700, Patel, Vedang wrote:
> > > > =

> > > > Can you send me your test setup to reproduce the bug? In the
> > > > command
> > > > you send, there seem to be some arguments pointing to files on
> > > > the
> > > > subsystem. (like initrd.)
> > > > =

> > > > It will be helpful if I can replicate exactly what you did.
> > > > =

> > > > Thanks,
> > > > Vedang
> > > > =

> > > > On Thu, 2016-06-30 at 09:57 +0800, kernel test robot wrote:
> > > > > =

> > > > > =

> > > > > FYI, we noticed the following commit:
> > > > > =

> > > > > https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-ne
> > > > > xt.git
> > > > > master
> > > > > commit 91c1832579700891747820862633f9a8d0d81fa4 ("ASoC:
> > > > > Intel:
> > > > > Skylake: Increase loglevel of debug messages.")
> > > > > =

> > > > > in testcase: boot
> > > > > =

> > > > > on test machine: 1 threads qemu-system-i386 -enable-kvm with
> > > > > 360M
> > > > > memory
> > > > > =

> > > > > caused below changes:
> > > > > =

> > > > > =

> > > > > +----------------------------------------------------------
> > > > > --+-----
> > > > > --
> > > > > -----+------------+
> > > > > > =

> > > > > > =

> > > > > > =

> > > > > > =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0
> > > > > > |
> > > > > > ef06b6f391 | 91c1832579 |
> > > > > +----------------------------------------------------------
> > > > > --+-----
> > > > > --
> > > > > -----+------------+
> > > > > > =

> > > > > > =

> > > > > > =

> > > > > > boot_successes=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0
> > > > > > |
> > > > > > 0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0| =
0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|
> > > > > > boot_failures=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0
> > > > > > |
> > > > > > 14=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0| 14=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|
> > > > > > genirq:Flags_mismatch_irq##(serial)vs.#(goldfish_pdev_bus)
> > > > > > |
> > > > > > 14=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|
> > > > > > invoked_oom-
> > > > > > killer:gfp_mask=3D0x=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|
> > > > > > 1=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|
> > > > > > Mem-
> > > > > > Info=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0|
> > > > > > 1=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|
> > > > > > Out_of_memory:Kill_process=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0
> > > > > > |
> > > > > > 1=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|
> > > > > > backtrace:do_writev=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0
> > > > > > |
> > > > > > 1=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|
> > > > > > backtrace:SyS_writev=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0
> > > > > > |
> > > > > > 1=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|
> > > > > > backtrace:vfs_write=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0
> > > > > > |
> > > > > > 1=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|
> > > > > > backtrace:SyS_write=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0
> > > > > > |
> > > > > > 1=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|
> > > > > > BUG:unable_to_handle_kernel=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0
> > > > > > |
> > > > > > 0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0| =
14=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|
> > > > > > Oops:#[##]=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0
> > > > > > |
> > > > > > 0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0| =
14=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|
> > > > > > EIP_is_at_strlen=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0
> > > > > > |
> > > > > > 0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0| =
14=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|
> > > > > > Kernel_panic-
> > > > > > not_syncing:Fatal_exception=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0|
> > > > > > 0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0| =
14=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|
> > > > > > backtrace:dynamic_debug_init=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0
> > > > > > |
> > > > > > 0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0| =
14=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|
> > > > > > backtrace:kernel_init_freeable=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0
> > > > > > |
> > > > > > 0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0| =
14=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0|
> > > > > +----------------------------------------------------------
> > > > > --+-----
> > > > > --
> > > > > -----+------------+
> > > > > =

> > > > > =

> > > > > =

> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.291679] Performance Events:=C2=A0
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.291679] Performance Events: Broken PMU=
 hardware
> > > > > detected,
> > > > > using software events only.
> > > > > Broken PMU hardware detected, using software events only.
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.309122] BUG: unable to handle kernel=
=C2=A0
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.309122] BUG: unable to handle kernel N=
ULL pointer
> > > > > dereferenceNULL pointer dereference at=C2=A0=C2=A0=C2=A0(null)
> > > > > =C2=A0at=C2=A0=C2=A0=C2=A0(null)
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.310586] IP:
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.310586] IP: [<c131a701>] strlen+0xb/0x=
17
> > > > > =C2=A0[<c131a701>] strlen+0xb/0x17
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.311438] *pdpt =3D 0000000000000000=C2=
=A0
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.311438] *pdpt =3D 0000000000000000 *pd=
e =3D
> > > > > f000ff53f000ff53
> > > > > *pde
> > > > > =3D f000ff53f000ff53=C2=A0
> > > > > =

> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.312549] Oops: 0000 [#1]
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.312549] Oops: 0000 [#1]
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.313064] CPU: 0 PID: 1 Comm: swapper No=
t tainted 4.7.0-
> > > > > rc1-
> > > > > 00046-g91c1832 #1
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.313064] CPU: 0 PID: 1 Comm: swapper No=
t tainted 4.7.0-
> > > > > rc1-
> > > > > 00046-g91c1832 #1
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.314469] Hardware name: QEMU Standard P=
C (i440FX +
> > > > > PIIX,
> > > > > 1996),
> > > > > BIOS Debian-1.8.2-1 04/01/2014
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.314469] Hardware name: QEMU Standard P=
C (i440FX +
> > > > > PIIX,
> > > > > 1996),
> > > > > BIOS Debian-1.8.2-1 04/01/2014
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.316115] task: c0058040 ti: c004e000 ta=
sk.ti: c004e000
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.316115] task: c0058040 ti: c004e000 ta=
sk.ti: c004e000
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.317110] EIP: 0060:[<c131a701>] EFLAGS:=
 00210246 CPU: 0
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.317110] EIP: 0060:[<c131a701>] EFLAGS:=
 00210246 CPU: 0
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.318160] EIP is at strlen+0xb/0x17
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.318160] EIP is at strlen+0xb/0x17
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.318866] EAX: 00000000 EBX: c21facc0 EC=
X: ffffffff EDX:
> > > > > c20bc808
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.318866] EAX: 00000000 EBX: c21facc0 EC=
X: ffffffff EDX:
> > > > > c20bc808
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.320029] ESI: 00000004 EDI: 00000000 EB=
P: c004ff00 ESP:
> > > > > c004fefc
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.320029] ESI: 00000004 EDI: 00000000 EB=
P: c004ff00 ESP:
> > > > > c004fefc
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.321264]=C2=A0=C2=A0DS: 007b ES: 007b F=
S: 0000 GS: 00e0 SS: 0068
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.321264]=C2=A0=C2=A0DS: 007b ES: 007b F=
S: 0000 GS: 00e0 SS: 0068
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.322264] CR0: 80050033 CR2: 00000000 CR=
3: 022a1000 CR4:
> > > > > 000006b0
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.322264] CR0: 80050033 CR2: 00000000 CR=
3: 022a1000 CR4:
> > > > > 000006b0
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.323471] Stack:
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.323471] Stack:
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.323861]=C2=A0=C2=A00000003a
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.323861]=C2=A0=C2=A00000003a c004ff2c c=
004ff2c c2225b46 c2225b46
> > > > > c20bc808
> > > > > c20bc808 00000024 00000024 00001aa5 00001aa5 000adc33
> > > > > 000adc33
> > > > > 00000256 00000256
> > > > > =

> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.325492]=C2=A0=C2=A0c21fac60
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.325492]=C2=A0=C2=A0c21fac60 c2225abd c=
2225abd ffffffff ffffffff
> > > > > 00000000
> > > > > 00000000 c004ff8c c004ff8c c2201c4f c2201c4f 7fffffff
> > > > > 7fffffff
> > > > > c2250884 c2250884
> > > > > =

> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.327033]=C2=A0=C2=A0c0058000
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.327033]=C2=A0=C2=A0c0058000 7fffffff 7=
fffffff c004ff4c c004ff4c
> > > > > c1ad6a4b
> > > > > c1ad6a4b c004ff80 c004ff80 c1ad4825 c1ad4825 00000000
> > > > > 00000000
> > > > > c1ad61f2 c1ad61f2
> > > > > =

> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.328680] Call Trace:
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.328680] Call Trace:
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.329134]=C2=A0=C2=A0[<c2225b46>] dynami=
c_debug_init+0x89/0x1ee
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.329134]=C2=A0=C2=A0[<c2225b46>] dynami=
c_debug_init+0x89/0x1ee
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.330100]=C2=A0=C2=A0[<c2225abd>] ?
> > > > > dynamic_debug_init_debugfs+0x5f/0x5f
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.330100]=C2=A0=C2=A0[<c2225abd>] ?
> > > > > dynamic_debug_init_debugfs+0x5f/0x5f
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.331237]=C2=A0=C2=A0[<c2201c4f>] do_one=
_initcall+0x89/0x112
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.331237]=C2=A0=C2=A0[<c2201c4f>] do_one=
_initcall+0x89/0x112
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.332161]=C2=A0=C2=A0[<c1ad6a4b>] ? _raw=
_spin_unlock_irq+0xd/0x15
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.332161]=C2=A0=C2=A0[<c1ad6a4b>] ? _raw=
_spin_unlock_irq+0xd/0x15
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.333158]=C2=A0=C2=A0[<c1ad4825>] ? __wa=
it_for_common+0xed/0xf7
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.333158]=C2=A0=C2=A0[<c1ad4825>] ? __wa=
it_for_common+0xed/0xf7
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.334158]=C2=A0=C2=A0[<c1ad61f2>] ?
> > > > > console_conditional_schedule+0x24/0x24
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.334158]=C2=A0=C2=A0[<c1ad61f2>] ?
> > > > > console_conditional_schedule+0x24/0x24
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.335303]=C2=A0=C2=A0[<c2201d1e>] kernel=
_init_freeable+0x46/0x165
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.335303]=C2=A0=C2=A0[<c2201d1e>] kernel=
_init_freeable+0x46/0x165
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.336383]=C2=A0=C2=A0[<c1ad2e5d>] kernel=
_init+0x8/0xcb
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.336383]=C2=A0=C2=A0[<c1ad2e5d>] kernel=
_init+0x8/0xcb
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.337209]=C2=A0=C2=A0[<c1ad6c62>] ret_fr=
om_kernel_thread+0xe/0x24
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.337209]=C2=A0=C2=A0[<c1ad6c62>] ret_fr=
om_kernel_thread+0xe/0x24
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.338236]=C2=A0=C2=A0[<c1ad2e55>] ? rest=
_init+0x65/0x65
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.338236]=C2=A0=C2=A0[<c1ad2e55>] ? rest=
_init+0x65/0x65
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.339151] Code:
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.339151] Code: 5d 5d c3 c3 55 55 89 89 =
e5 e5 56 56 89
> > > > > 89 c6
> > > > > c6
> > > > > 89 89 d0 d0 88 88 c4 c4 ac ac 38 38 e0 e0 74 74 09 09 84 84
> > > > > c0 c0
> > > > > 75
> > > > > 75 f7 f7 be be 01 01 00 00 00 00 00 00 89 89 f0 f0 48 48 5e
> > > > > 5e 5d
> > > > > 5d
> > > > > c3 c3 55 55 83 83 c9 c9 ff ff 89 89 e5 e5 57 57 89 89 c7 c7
> > > > > 31 31
> > > > > c0
> > > > > c0 <f2> <f2> ae ae 5f 5f b8 b8 fe fe ff ff ff ff ff ff 29 29
> > > > > c8 c8
> > > > > 5d
> > > > > 5d c3 c3 85 85 c9 c9 74 74 16 16 55 55 89 89 e5 e5 57 57 89
> > > > > 89
> > > > > =

> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.343525] EIP: [<c131a701>]=C2=A0
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.343525] EIP: [<c131a701>]
> > > > > strlen+0xb/0x17strlen+0xb/0x17
> > > > > SS:ESP 0068:c004fefc
> > > > > =C2=A0SS:ESP 0068:c004fefc
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.344739] CR2: 0000000000000000
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.344739] CR2: 0000000000000000
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.345342] ---[ end trace 04f806a67a86ecc=
c ]---
> > > > > [=C2=A0=C2=A0=C2=A0=C2=A00.345342] ---[ end trace 04f806a67a86ecc=
c ]---
> > > > > =

> > > > > =

> > > > > FYI, raw QEMU command line is:
> > > > > =

> > > > > 	qemu-system-i386 -enable-kvm -kernel /pkg/linux/i386-
> > > > > randconfig-c0-06280858/gcc-
> > > > > 6/91c1832579700891747820862633f9a8d0d81fa4/vmlinuz-4.7.0-rc1-
> > > > > 00046-
> > > > > g91c1832 -append 'root=3D/dev/ram0 user=3Dlkp
> > > > > job=3D/lkp/scheduled/vm-
> > > > > lkp-
> > > > > wsx03-quantal-i386-3/rand_boot-1-quantal-core-i386.cgz-i386-
> > > > > randconfig-c0-06280858-
> > > > > 91c1832579700891747820862633f9a8d0d81fa4-
> > > > > 20160628-92876-1qu8nei-0.yaml ARCH=3Di386 kconfig=3Di386-
> > > > > randconfig-c0-
> > > > > 06280858 branch=3Dlinux-devel/devel-hourly-2016062804
> > > > > commit=3D91c1832579700891747820862633f9a8d0d81fa4
> > > > > BOOT_IMAGE=3D/pkg/linux/i386-randconfig-c0-06280858/gcc-
> > > > > 6/91c1832579700891747820862633f9a8d0d81fa4/vmlinuz-4.7.0-rc1-
> > > > > 00046-
> > > > > g91c1832 max_uptime=3D600 RESULT_ROOT=3D/result/boot/1/vm-lkp-
> > > > > wsx03-
> > > > > quantal-i386/quantal-core-i386.cgz/i386-randconfig-c0-
> > > > > 06280858/gcc-
> > > > > 6/91c1832579700891747820862633f9a8d0d81fa4/0 LKP_SERVER=3Dinn
> > > > > earlyprintk=3DttyS0,115200 systemd.log_level=3Derr debug
> > > > > apic=3Ddebug
> > > > > sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=3D100
> > > > > panic=3D-1
> > > > > softlockup_panic=3D1 nmi_watchdog=3Dpanic oops=3Dpanic
> > > > > load_ramdisk=3D2
> > > > > prompt_ramdisk=3D0 console=3DttyS0,115200 console=3Dtty0 vga=3Dno=
rmal
> > > > > rw
> > > > > ip=3D::::vm-lkp-wsx03-quantal-i386-3::dhcp
> > > > > drbd.minor_count=3D8'=C2=A0=C2=A0-
> > > > > initrd=C2=A0
> > > > > /fs/sdc1/initrd-vm-lkp-wsx03-quantal-i386-3 -m 360 -smp 1
> > > > > -device
> > > > > e1000,netdev=3Dnet0 -netdev user,id=3Dnet0 -boot order=3Dnc -no-
> > > > > reboot
> > > > > -watchdog i6300esb -rtc base=3Dlocaltime -pidfile
> > > > > /dev/shm/kboot/pid-
> > > > > vm-lkp-wsx03-quantal-i386-3 -serial
> > > > > file:/dev/shm/kboot/serial-vm-
> > > > > lkp-wsx03-quantal-i386-3 -daemonize -display none -monitor
> > > > > null=C2=A0
> > > > > =

> > > > > =

> > > > > =

> > > > > =

> > > > > =

> > > > > Thanks,
> > > > > Xiaolong
> > > =

> > > From 8602d6c24a0159be050849aa934ac18f8d13fef3 Mon Sep 17 00:00:00
> > > 2001
> > > From: Vedang Patel <vedang.patel@intel.com>
> > > Date: Thu, 7 Jul 2016 17:38:44 -0700
> > > Subject: [PATCH] ASoC: Intel: Skylake: Fix error while dynamic
> > > debug.
> > > =

> > > Change-Id: I1e99896a0de5576d8eccdce4dbd666f05b4263ea
> > > ---
> > > sound/soc/intel/skylake/skl-sst-ipc.c | 2 +-
> > > 1 file changed, 1 insertion(+), 1 deletion(-)
> > > =

> > > diff --git a/sound/soc/intel/skylake/skl-sst-ipc.c
> > > b/sound/soc/intel/skylake/skl-sst-ipc.c
> > > index c141f24..96f2f68 100644
> > > --- a/sound/soc/intel/skylake/skl-sst-ipc.c
> > > +++ b/sound/soc/intel/skylake/skl-sst-ipc.c
> > > @@ -692,7 +692,7 @@ int skl_ipc_init_instance(struct
> > > sst_generic_ipc *ipc,
> > > 	 /* param_block_size must be in dwords */
> > > 	u16 param_block_size =3D msg->param_data_size / sizeof(u32);
> > > =

> > > -	print_hex_dump_debug(NULL, DUMP_PREFIX_NONE,
> > > +	print_hex_dump_debug("Param data:", DUMP_PREFIX_NONE,
> > > 		16, 4, buffer, param_block_size, false);
> > > =

> > > 	header.primary =3D IPC_MSG_TARGET(IPC_MOD_MSG);
--===============3334227530461254826==--