MIME-Version: 1.0
References: <20211116142631.571909964@linuxfoundation.org> <4ef11d86-28f6-69c8-ed79-926d39bdc13d@gmail.com>
In-Reply-To: <4ef11d86-28f6-69c8-ed79-926d39bdc13d@gmail.com>
From:   Scott Bruce <smbruce@gmail.com>
Date:   Tue, 16 Nov 2021 21:41:07 -0800
Message-ID: <CAPOoXdHjqm=9K5BHc8p48NEf0jzZ92yiZZFQwmhGMxcTAX020w@mail.gmail.com>
Subject: Re: [PATCH 5.15 000/927] 5.15.3-rc2 review
To:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        linux-kernel@vger.kernel.org
Cc:     torvalds@linux-foundation.org, akpm@linux-foundation.org,
        linux@roeck-us.net, shuah@kernel.org, patches@kernelci.org,
        lkft-triage@lists.linaro.org, pavel@denx.de, jonathanh@nvidia.com,
        f.fainelli@gmail.com, stable@vger.kernel.org
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

On 11/16/21 13:59, Scott Bruce wrote:
> On 11/16/21 07:01, Greg Kroah-Hartman wrote:
>> This is the start of the stable review cycle for the 5.15.3 release.
>> There are 927 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, 18 Nov 2021 14:24:22 +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-5.15.3-rc2.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
>>
>
> Regression found on x86-64 AMD (ASUS GA503QR, Cezanne platform)
> somewhere between 7f9a9d5d9983 and 5.15.3-rc1. The very early -rc1 tag
> from a day and a half ago boots fine, -rc1 final and -rc2 boot into a
> kernel panic during init.
>
> Unfortunately I can't gather any useful debug info from the panic as the
> relevant bits are instantly pushed off the screen by rest of the dump.
>
> Here's what I'm left with on screen after the panic, hopefully someone
> can get something useful out of it:
> https://photos.app.goo.gl/6FrYPfZCY6YdnPDz6
>
> I'll bisect and try to narrow this down some today but I'm running
> builds on my laptop while I work so it won't be super quick.
>
> Scott

Reverting c3fc9d9e8f2dc518a8ce3c77f833a11b47865944 "x86: Fix
__get_wchan() for !STACKTRACE" resolves this issue.

With this revert in place 5.15.3-rc2 boots successfully with no dmesg
regressions on my AMD Cezanne laptop, I'll wait for actual use
tomorrow to leave a proper
tested by.

Scott