linux-kernel - Re: [PATCH 4.19 00/36] 4.19.303-rc1 review

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Date: Mon, 18 Dec 2023 23:27:44 -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
Subject: Re: [PATCH 4.19 00/36] 4.19.303-rc1 review

Hello!

On 18/12/23 7:51 a. m., Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 4.19.303 release.
> There are 36 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 Wed, 20 Dec 2023 13:50:31 +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/v4.x/stable-review/patch-4.19.303-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-4.19.y
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h

We see new warnings introduced in 32-bits system, with GCC 8, GCC 9, GCC 11, GCC 12, and Clang 17, on:
* arm
* i386
* arc
* mips
* powerpc
* s390
* sh
* sparc

It goes like this:

-----8<-----
   In file included from /builds/linux/include/linux/list.h:9,
                    from /builds/linux/include/linux/module.h:9,
                    from /builds/linux/net/core/skbuff.c:41:
   /builds/linux/net/core/skbuff.c: In function 'skb_segment':
   /builds/linux/include/linux/kernel.h:847:43: warning: comparison of distinct pointer types lacks a cast
     847 |                 (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
         |                                           ^~
   /builds/linux/include/linux/kernel.h:861:18: note: in expansion of macro '__typecheck'
     861 |                 (__typecheck(x, y) && __no_side_effects(x, y))
         |                  ^~~~~~~~~~~
   /builds/linux/include/linux/kernel.h:871:31: note: in expansion of macro '__safe_cmp'
     871 |         __builtin_choose_expr(__safe_cmp(x, y), \
         |                               ^~~~~~~~~~
   /builds/linux/include/linux/kernel.h:880:25: note: in expansion of macro '__careful_cmp'
     880 | #define min(x, y)       __careful_cmp(x, y, <)
         |                         ^~~~~~~~~~~~~
   /builds/linux/net/core/skbuff.c:3630:32: note: in expansion of macro 'min'
    3630 |                 partial_segs = min(len, GSO_BY_FRAGS - 1) / mss;
         |                                ^~~
----->8-----

Greetings!

Daniel Díaz
daniel.diaz@...aro.org