linux-kernel - Re: [PATCH 5.8 000/177] 5.8.10-rc1 review

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Message-ID: <9365ff94-2a28-cc5f-7487-a6d8d42de302@linuxfoundation.org>
Date:   Thu, 17 Sep 2020 08:34:58 -0600
From:   Shuah Khan <skhan@...uxfoundation.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Prateek Sood <prsood@...eaurora.org>, Takashi Iwai <tiwai@...e.de>,
        linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org,
        akpm@...ux-foundation.org, linux@...ck-us.net, shuah@...nel.org,
        patches@...nelci.org, ben.hutchings@...ethink.co.uk,
        lkft-triage@...ts.linaro.org, pavel@...x.de,
        stable@...r.kernel.org, Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: [PATCH 5.8 000/177] 5.8.10-rc1 review

On 9/16/20 11:25 AM, Greg Kroah-Hartman wrote:
> On Wed, Sep 16, 2020 at 09:34:52AM -0600, Shuah Khan wrote:
>> On 9/16/20 9:26 AM, Greg Kroah-Hartman wrote:
>>> On Wed, Sep 16, 2020 at 08:26:48AM -0600, Shuah Khan wrote:
>>>> On 9/16/20 12:29 AM, Greg Kroah-Hartman wrote:
>>>>> On Tue, Sep 15, 2020 at 08:54:24PM -0600, Shuah Khan wrote:
>>>>>> On 9/15/20 3:06 PM, Shuah Khan wrote:
>>>>>>> On 9/15/20 8:11 AM, Greg Kroah-Hartman wrote:
>>>>>>>> This is the start of the stable review cycle for the 5.8.10 release.
>>>>>>>> There are 177 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 Thu, 17 Sep 2020 14:06:12 +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-5.8.10-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-5.8.y
>>>>>>>> and the diffstat can be found below.
>>>>>>>>
>>>>>>>> thanks,
>>>>>>>>
>>>>>>>> greg k-h
>>>>>>>>
>>>>>>>
>>>>>>> Compiled and booted fine. wifi died:
>>>>>>>
>>>>>>> ath10k_pci 0000:02:00.0: could not init core (-110)
>>>>>>> ath10k_pci 0000:02:00.0: could not probe fw (-110)
>>>>>>>
>>>>>>> This is regression from 5.8.9 and 5.9-rc5 works just fine.
>>>>>>>
>>>>>>> I will try to bisect later this evening to see if I can isolate the
>>>>>>> commit.
>>>>>>>
>>>>>>
>>>>>> The following commit is what caused ath10k_pci driver problem
>>>>>> that killed wifi.
>>>>>>
>>>>>> Prateek Sood <prsood@...eaurora.org>
>>>>>>        firmware_loader: fix memory leak for paged buffer
>>>>>>
>>>>>> https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?h=linux-5.8.y&id=ec0a59266c9c9f46037efd3dcc0323973e102271
>>>>>
>>>>> Ugh, that's not good, is this also a problem in 5.9-rc5 as well?  For
>>>>> reference, this is commit 4965b8cd1bc1 ("firmware_loader: fix memory
>>>>> leak for paged buffer") in Linus's tree.
>>>>>
>>>>
>>>> I am not seeing this on Linux 5.9-rc5 for sure.
>>>>
>>>>> And it should be showing up in 5.4.y at the moment too, as this patch is
>>>>> in that tree right now...
>>>>>
>>>>
>>>> I don't see this patch in  4.19.146-rc1
>>>
>>> It's not there, it's in 5.4.66-rc1, which worked for you somehow, right?
>>>
>>>> Linus's tree works for with this patch in. I compared the two files
>>>> for differences in commit between Linus's tree and 5.8.10-rc1
>>>>
>>>> Couldn't find anything obvious.
>>>
>>> Again, really odd...
>>>
>>> I don't have a problem dropping it, but I should drop it from both 5.4.y
>>> and 5.8.y, right?
>>>
>>
>> Sorry. Yes. Dropping from 5.8 and 5.4 would be great until we figure out
>> why this patch causes problems.
>>
>> I will continue debugging and let you know what I find.
> 

With this it boots and wifi is good for me. I am very puzzled by why
this made a difference to make sure I am not narrowing in on the wrong
patch.

Compiled and booted on my test system. No dmesg regressions.

Tested-by: Shuah Khan <skhan@...uxfoundation.org>

thanks,
-- Shuah