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Date: Tue, 28 May 2024 15:18:04 +0100
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Subject: Re: [PATCH 5.15 00/23] 5.15.160-rc1 review
To: Chuck Lever III <chuck.lever@oracle.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
 Neil Brown <neilb@suse.de>, Chris Packham
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From: Jon Hunter <jonathanh@nvidia.com>
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On 28/05/2024 14:14, Chuck Lever III wrote:
> 
> 
>> On May 28, 2024, at 5:04 AM, Jon Hunter <jonathanh@nvidia.com> wrote:
>>
>>
>> On 25/05/2024 15:20, Greg Kroah-Hartman wrote:
>>> On Sat, May 25, 2024 at 12:13:28AM +0100, Jon Hunter wrote:
>>>> Hi Greg,
>>>>
>>>> On 23/05/2024 14:12, Greg Kroah-Hartman wrote:
>>>>> This is the start of the stable review cycle for the 5.15.160 release.
>>>>> There are 23 patches in this series, all will be posted as a response
>>>>> to this one.  If anyone has any issues with these being applied, please
>>>>> let me know.
>>>>>
>>>>> Responses should be made by Sat, 25 May 2024 13:03:15 +0000.
>>>>> Anything received after that time might be too late.
>>>>>
>>>>> The whole patch series can be found in one patch at:
>>>>> https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.15.160-rc1.gz
>>>>> or in the git tree and branch at:
>>>>> git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.15.y
>>>>> and the diffstat can be found below.
>>>>>
>>>>> thanks,
>>>>>
>>>>> greg k-h
>>>>>
>>>>> -------------
>>>>> Pseudo-Shortlog of commits:
>>>>
>>>> ...
>>>>
>>>>> NeilBrown <neilb@suse.de>
>>>>>       nfsd: don't allow nfsd threads to be signalled.
>>>>
>>>>
>>>> I am seeing a suspend regression on a couple boards and bisect is pointing
>>>> to the above commit. Reverting this commit does fix the issue.
>>> Ugh, that fixes the report from others.  Can you cc: everyone on that
>>> and figure out what is going on, as this keeps going back and forth...
>>
>>
>> Adding Chuck, Neil and Chris from the bug report here [0].
>>
>> With the above applied to v5.15.y, I am seeing suspend on 2 of our boards fail. These boards are using NFS and on entry to suspend I am now seeing ...
>>
>> Freezing of tasks failed after 20.002 seconds (1 tasks refusing to
>> freeze, wq_busy=0):
>>
>> The boards appear to hang at that point. So may be something else missing?
> 
> Note that we don't have access to hardware like this, so
> we haven't tested that patch (even the upstream version)
> with suspend on that hardware.


No problem, I would not expect you to have this particular hardware :-)

> So, it could be something missing, or it could be that
> patch has a problem.
> 
> It would help us to know if you observe the same issue
> with an upstream kernel, if that is possible.


I don't observe this with either mainline, -next or any other stable 
branch. So that would suggest that something else is missing from 
linux-5.15.y.

Jon

-- 
nvpublic