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[Dell XPS 13 9343] Random kernel Oops at boot with "acpi=ht", disappearing with "acpi=off"

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  [Dell XPS 13 9343] Random kernel Oops at boot with "acpi=ht", disappearing with "acpi=off" Niccolò Belli <niccolo.belli@linuxsystems.it> - 2015-10-02 12:10 +0200
    Re: [Dell XPS 13 9343] Random kernel Oops at boot with "acpi=ht",  disappearing with "acpi=off" Mika Westerberg <mika.westerberg@linux.intel.com> - 2015-10-02 12:20 +0200
      Re: [Dell XPS 13 9343] Random kernel Oops at boot with "acpi=ht", disappearing with "acpi=off" Niccolò Belli <niccolo.belli@linuxsystems.it> - 2015-10-03 12:20 +0200
        Re: [Dell XPS 13 9343] Random kernel Oops at boot with "acpi=ht",  disappearing with "acpi=off" Mika Westerberg <mika.westerberg@linux.intel.com> - 2015-10-05 12:50 +0200
          Re: [Dell XPS 13 9343] Random kernel Oops at boot with "acpi=ht", disappearing with "acpi=off" Niccolò Belli <niccolo.belli@linuxsystems.it> - 2015-10-05 15:50 +0200
            Re: [Dell XPS 13 9343] Random kernel Oops at boot with "acpi=ht",  disappearing with "acpi=off" Mika Westerberg <mika.westerberg@linux.intel.com> - 2015-10-05 16:00 +0200
              Re: [Dell XPS 13 9343] Random kernel Oops at boot with "acpi=ht", disappearing with "acpi=off" Niccolò Belli <niccolo.belli@linuxsystems.it> - 2015-10-05 18:00 +0200

#1238082 — [Dell XPS 13 9343] Random kernel Oops at boot with "acpi=ht", disappearing with "acpi=off"

Hi,
This laptop suffers of random kernel hangs at boot: I tested kernel 4.1.8, 
4.2.1 and 4.3-rc3 and they are all affected.
Every time I turn on my laptop I have to boot several times to be able to 
reach the sddm login because often I get hangs which prevent the system to 
boot. Once booted I don't have any problem anymore, until the next boot.

With "acpi=off" the system boots flawlessly, while with "acpi=ht" I still 
get random hangs, so I guess the problem is in the ACPI table parsing code 
itself, or perhaps the SMP code.

I recompiled kernel 4.3-rc3 with CONFIG_ACPI_DEBUG=y and I attached full 
log from a serial console, booting with "debug acpi.debug_level=0x2003" 
(warn, error and tables debug enabled): 
https://bugzilla.kernel.org/attachment.cgi?id=189041

Distro is Arch Linux. Please let me know if you need further logs.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=105251

Niccolò Belli
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#1238088 — Re: [Dell XPS 13 9343] Random kernel Oops at boot with "acpi=ht", disappearing with "acpi=off"

On Fri, Oct 02, 2015 at 11:59:38AM +0200, Niccolò Belli wrote:
> Hi,
> This laptop suffers of random kernel hangs at boot: I tested kernel 4.1.8,
> 4.2.1 and 4.3-rc3 and they are all affected.
> Every time I turn on my laptop I have to boot several times to be able to
> reach the sddm login because often I get hangs which prevent the system to
> boot. Once booted I don't have any problem anymore, until the next boot.
> 
> With "acpi=off" the system boots flawlessly, while with "acpi=ht" I still
> get random hangs, so I guess the problem is in the ACPI table parsing code
> itself, or perhaps the SMP code.
> 
> I recompiled kernel 4.3-rc3 with CONFIG_ACPI_DEBUG=y and I attached full log
> from a serial console, booting with "debug acpi.debug_level=0x2003" (warn,
> error and tables debug enabled):
> https://bugzilla.kernel.org/attachment.cgi?id=189041
> 
> Distro is Arch Linux. Please let me know if you need further logs.
> 
> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=105251

Does it work any better if you blacklist the crashing module
"snd_soc_rl6347a" (or set CONFIG_SND_SOC_RL6347A=n)?
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#1238796

On venerdì 2 ottobre 2015 12:19:19 CEST, Mika Westerberg wrote:
> On Fri, Oct 02, 2015 at 11:59:38AM +0200, Niccolò Belli wrote:
>> Hi,
>> This laptop suffers of random kernel hangs at boot: I tested kernel 4.1.8,
>> 4.2.1 and 4.3-rc3 and they are all affected.
>> Every time I turn on my laptop I have to boot several times to be able to
>> reach the sddm login because often I get hangs which prevent 
>> the system to ...
>
> Does it work any better if you blacklist the crashing module
> "snd_soc_rl6347a" (or set CONFIG_SND_SOC_RL6347A=n)?
>

Hi,
I tried to blacklist the crashing module (snd_soc_rl6347a) without any 
success: it still loads. I booted kernel with 
modprobe.blacklist=snd_soc_rl6347a and I put "blacklist snd_soc_rl6347a" in 
/etc/modprobe.d/blacklist.conf. I even tried to recompile the kernel 
without that module, but there is no option in "make nconfig" to disable 
it, while adding "# CONFIG_SND_SOC_RL6347A is not set" to the config 
doesn't help because it keeps showing CONFIG_SND_SOC_RL6347A=m in "make 
nconfig" if I search for it with F8.
I attached another log with modprobe.blacklist=snd_soc_rl6347a plus 
modprobe.d entries: https://bugzilla.kernel.org/attachment.cgi?id=189361

Thanks,
Niccolò Belli
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#1239445 — Re: [Dell XPS 13 9343] Random kernel Oops at boot with "acpi=ht", disappearing with "acpi=off"

On Sat, Oct 03, 2015 at 12:11:54PM +0200, Niccolò Belli wrote:
> On venerdì 2 ottobre 2015 12:19:19 CEST, Mika Westerberg wrote:
> >On Fri, Oct 02, 2015 at 11:59:38AM +0200, Niccolò Belli wrote:
> >>Hi,
> >>This laptop suffers of random kernel hangs at boot: I tested kernel 4.1.8,
> >>4.2.1 and 4.3-rc3 and they are all affected.
> >>Every time I turn on my laptop I have to boot several times to be able to
> >>reach the sddm login because often I get hangs which prevent the system
> >>to ...
> >
> >Does it work any better if you blacklist the crashing module
> >"snd_soc_rl6347a" (or set CONFIG_SND_SOC_RL6347A=n)?
> >
> 
> Hi,
> I tried to blacklist the crashing module (snd_soc_rl6347a) without any
> success: it still loads. I booted kernel with
> modprobe.blacklist=snd_soc_rl6347a and I put "blacklist snd_soc_rl6347a" in
> /etc/modprobe.d/blacklist.conf. I even tried to recompile the kernel without
> that module, but there is no option in "make nconfig" to disable it, while
> adding "# CONFIG_SND_SOC_RL6347A is not set" to the config doesn't help
> because it keeps showing CONFIG_SND_SOC_RL6347A=m in "make nconfig" if I
> search for it with F8.
> I attached another log with modprobe.blacklist=snd_soc_rl6347a plus
> modprobe.d entries: https://bugzilla.kernel.org/attachment.cgi?id=189361

What if you disable the whole ALSA SoC?

CONFIG_SND_SOC=n
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#1239574

Il lunedì 5 ottobre 2015 12:46:45 CEST, Mika Westerberg ha scritto:
> On Sat, Oct 03, 2015 at 12:11:54PM +0200, Niccolò Belli wrote:
>> On venerdì 2 ottobre 2015 12:19:19 CEST, Mika Westerberg wrote: ...
>
> What if you disable the whole ALSA SoC?
>
> CONFIG_SND_SOC=n

Now I don't get any Oops but it doesn't reach the login anymore: instead it 
goes into emergency mode! :(
Log: https://bugzilla.kernel.org/attachment.cgi?id=189471

Thanks,
Niccolò Belli
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#1239575 — Re: [Dell XPS 13 9343] Random kernel Oops at boot with "acpi=ht", disappearing with "acpi=off"

On Mon, Oct 05, 2015 at 03:41:09PM +0200, Niccolò Belli wrote:
> Il lunedì 5 ottobre 2015 12:46:45 CEST, Mika Westerberg ha scritto:
> >On Sat, Oct 03, 2015 at 12:11:54PM +0200, Niccolò Belli wrote:
> >>On venerdì 2 ottobre 2015 12:19:19 CEST, Mika Westerberg wrote: ...
> >
> >What if you disable the whole ALSA SoC?
> >
> >CONFIG_SND_SOC=n
> 
> Now I don't get any Oops but it doesn't reach the login anymore: instead it
> goes into emergency mode! :(
> Log: https://bugzilla.kernel.org/attachment.cgi?id=189471

It says:

Mounting /boot...
[FAILED] Failed to mount /boot.
See 'systemctl status boot.mount' for details.
[DEPEND] Dependency failed for Local File Systems.

Did you run 'systemctl status boot.mount'?
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#1239697

Il lunedì 5 ottobre 2015 15:54:49 CEST, Mika Westerberg ha scritto:
> On Mon, Oct 05, 2015 at 03:41:09PM +0200, Niccolò Belli wrote:
>> Il lunedì 5 ottobre 2015 12:46:45 CEST, Mika Westerberg ha scritto: ...
>
> It says:
>
> Mounting /boot...
> [FAILED] Failed to mount /boot.
> See 'systemctl status boot.mount' for details.
> [DEPEND] Dependency failed for Local File Systems.
>
> Did you run 'systemctl status boot.mount'?

Please do not consider my previous e-mail, becuase the failure was due to 
file loss: in fact sometimes the system hangs while shutting down (I think 
because of this bug) and so some modules of my just compiled kernel were 
loss. I recompiled the kernel once again and synced the disks just to be 
sure: I still get random crashes even with CONFIG_SND_SOC=n.
See the new log: https://bugzilla.kernel.org/attachment.cgi?id=189481

Thank you very much for your help, it's much apreciated.
Niccolò Belli
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