linux-kernel - Re: [PATCH 6.6 000/528] 6.6.3-rc2 review

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Date:   Sat, 25 Nov 2023 13:04:02 -0600
From:   Daniel Díaz <daniel.diaz@...aro.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org
Cc:     patches@...ts.linux.dev, linux-kernel@...r.kernel.org,
        torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
        linux@...ck-us.net, shuah@...nel.org, patches@...nelci.org,
        lkft-triage@...ts.linaro.org, pavel@...x.de, jonathanh@...dia.com,
        f.fainelli@...il.com, sudipm.mukherjee@...il.com,
        srw@...dewatkins.net, rwarsow@....de, conor@...nel.org,
        allen.lkml@...il.com, hca@...ux.ibm.com
Subject: Re: [PATCH 6.6 000/528] 6.6.3-rc2 review

Hello!

On 25/11/23 10:33 a. m., Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 6.6.3 release.
> There are 528 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 Mon, 27 Nov 2023 16:30:48 +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/v6.x/stable-review/patch-6.6.3-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-6.6.y
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h

We see this build regression with System/390:

-----8<-----
   /builds/linux/arch/s390/mm/page-states.c: In function 'mark_kernel_pgd':
   /builds/linux/arch/s390/mm/page-states.c:165:45: error: request for member 'val' in something not a structure or union
     165 |         max_addr = (S390_lowcore.kernel_asce.val & _ASCE_TYPE_MASK) >> 2;
         |                                             ^
   make[5]: *** [/builds/linux/scripts/Makefile.build:243: arch/s390/mm/page-states.o] Error 1
----->8-----

That's with Clang 17, Clang nightly, GCC 8 and GCC 13, with allnoconfig, defconfig, and tinyconfig.

Bisection points to:

   commit b676da1c17c9d0c5b05c7b6ecb9ecf2d8b5e00de
   Author: Heiko Carstens <hca@...ux.ibm.com>
   Date:   Tue Oct 17 21:07:03 2023 +0200

       s390/cmma: fix initial kernel address space page table walk
       
       commit 16ba44826a04834d3eeeda4b731c2ea3481062b7 upstream.


Reverting makes the build pass.

Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>

Greetings!

Daniel Díaz
daniel.diaz@...aro.org