linux-kernel - Re: [PATCH 5.10 000/657] 5.10.20-rc4 review

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Date:   Wed, 3 Mar 2021 12:04:42 -0800
From:   Guenter Roeck <linux@...ck-us.net>
To:     Naresh Kamboju <naresh.kamboju@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     open list <linux-kernel@...r.kernel.org>,
        Shuah Khan <shuah@...nel.org>,
        Florian Fainelli <f.fainelli@...il.com>, patches@...nelci.org,
        lkft-triage@...ts.linaro.org, Jon Hunter <jonathanh@...dia.com>,
        linux-stable <stable@...r.kernel.org>, pavel@...x.de,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH 5.10 000/657] 5.10.20-rc4 review

On 3/3/21 8:12 AM, Naresh Kamboju wrote:
> On Wed, 3 Mar 2021 at 00:59, Greg Kroah-Hartman
> <gregkh@...uxfoundation.org> wrote:
>>
>> This is the start of the stable review cycle for the 5.10.20 release.
>> There are 657 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, 04 Mar 2021 19:25:07 +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-5.10.20-rc4.gz
>> or in the git tree and branch at:
>>         git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.10.y
>> and the diffstat can be found below.
>>
>> thanks,
>>
>> greg k-h
> 
> Results from Linaro’s test farm.
> All our builds are getting PASS now.
> But,
> Regressions detected on all devices (arm64, arm, x86_64 and i386).
> LTP pty test case hangup01 failed on all devices
> 
> hangup01    1  TFAIL  :  hangup01.c:133: unexpected message 3
> 
> Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>
> 
> This failure is specific to stable-rc v5.10.20-rc4 and v5.11.3-rc3
> Test PASS on the v5.12-rc1 mainline and Linux next kernel.
> 
> Following two commits caused this test failure,
> 
>    Linus Torvalds <torvalds@...ux-foundation.org>
>        tty: implement read_iter
> 
>    Linus Torvalds <torvalds@...ux-foundation.org>
>        tty: convert tty_ldisc_ops 'read()' function to take a kernel pointer
> 

Upstream has:

e71a8d5cf4b4 tty: fix up iterate_tty_read() EOVERFLOW handling
ddc5fda74561 tty: fix up hung_up_tty_read() conversion

Those are not present in v5.10.20-rc4, which may possibly
explain the problem.

Guenter