Re: Patch "Revert "ACPI: resources: Add checks for ACPI IRQ override"" has been added to the 5.13-stable tree

From: PGNet Dev <pgnet.dev@gmail.com>
To: gregkh@linuxfoundation.org
Cc: hui.wang@canonical.com, rafael.j.wysocki@intel.com,
	stable@vger.kernel.org, regressions@lists.linux.dev
Subject: Re: Patch "Revert "ACPI: resources: Add checks for ACPI IRQ override"" has been added to the 5.13-stable tree
Date: Mon, 9 Aug 2021 08:41:01 -0400	[thread overview]
Message-ID: <a64b85a6-cc26-afc3-4d6a-85c7a366576b@gmail.com> (raw)
In-Reply-To: <YREdlli29GUfvaUx@kroah.com>

On 8/9/21 8:20 AM, Greg KH wrote:
> On Mon, Aug 09, 2021 at 08:15:11AM -0400, PGNet Dev wrote:
>> On 7/31/21 2:56 AM, gregkh@linuxfoundation.org wrote:
>>>
>>> This is a note to let you know that I've just added the patch titled
>>>
>>>       Revert "ACPI: resources: Add checks for ACPI IRQ override"
>>>
>>> to the 5.13-stable tree which can be found at:
>>>       http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
>>>
>>> The filename of the patch is:
>>>        revert-acpi-resources-add-checks-for-acpi-irq-override.patch
>>> and it can be found in the queue-5.13 subdirectory.
>>>
>>> If you, or anyone else, feels it should not be added to the stable tree,
>>> please let <stable@vger.kernel.org> know about it.
>>>
>>>
>>>   From e0eef3690dc66b3ecc6e0f1267f332403eb22bea Mon Sep 17 00:00:00 2001
>>> From: Hui Wang <hui.wang@canonical.com>
>>> Date: Wed, 28 Jul 2021 23:19:58 +0800
>>> Subject: Revert "ACPI: resources: Add checks for ACPI IRQ override"
>>>
>>> From: Hui Wang <hui.wang@canonical.com>
>>>
>>> commit e0eef3690dc66b3ecc6e0f1267f332403eb22bea upstream.
>>
>> Confirming that this^ revert resolves the reported non-boot regression
>>
>> System does boot cleanly; but, then REboots @ 60 seconds.
>>
>> It's a known bug, with fix already in 5.13.9/stable:
>>
>>   Revert "watchdog: iTCO_wdt: Account for rebooting on second timeout"
>>   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?h=linux-5.13.y&id=02db470b866fd06d8951
>>
>> , causing TCO watchdog auto-reboot @ 60 secs.
>>
>> Although particularly nasty on servers with /boot on RAID, breaking arrays if watchdog boots before arrays correctly assembled, iiuc, it's UN-related
>>
>> With interim workaround
>>
>>   edit /etc/modprobe.d/blacklist.conf
>>
>> +	blacklist iTCO_wdt
>> +	blacklist iTCO_vendor_support
>>
>> for this second issue in place, 5.13.8 boots & appears stable.
> 
> I do not understand, am I missing something in the queue for the next
> 5.13 release that needs to be applied?

no.

just confirming this^ revert, landed in 5.13.8, _works_ to fix non-boot.

system _does_ bump into 60-sec REboot.
wasn't sure it's related to this^ or not ...

the fix for this _next_ issue appears already in 5.13.9/stable (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?h=linux-5.13.y&id=02db470b866fd06d8951)
The module blacklist workaround works for 5.13.8.

i.e., as it stands, 5.13.8 is usable (here), iff the iTCO mod blacklist workaround is applied.
5.13.9 is expected to resolved it.