Re: [PATCH 5.12 000/242] 5.12.18-rc1 review

[Daniel Díaz]

Hello!

On Thu, 15 Jul 2021 at 13:56, Greg Kroah-Hartman
<gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> This is the start of the stable review cycle for the 5.12.18 release.
> There are 242 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 Sat, 17 Jul 2021 18:21:07 +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-5.12.18-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-5.12.y
> and the diffstat can be found below.
>
> thanks,
>
> greg k-h

Build regressions have been found on this release candidate (and on 5.13-rc).

## Regressions (compared to v5.12.17)
* s390, build
  - clang-10-allnoconfig
  - clang-10-defconfig
  - clang-10-tinyconfig
  - clang-11-allnoconfig
  - clang-11-defconfig
  - clang-11-tinyconfig
  - clang-12-allnoconfig
  - clang-12-defconfig
  - clang-12-tinyconfig
  - gcc-8-allnoconfig
  - gcc-8-defconfig
  - gcc-8-tinyconfig
  - gcc-9-allnoconfig
  - gcc-9-defconfig
  - gcc-9-tinyconfig
  - gcc-10-allnoconfig
  - gcc-10-defconfig
  - gcc-10-tinyconfig

Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>

[...]
> Sven Schnelle <svens@xxxxxxxxxxxxx>
>     s390/signal: switch to using vdso for sigreturn and syscall restart
[...]

Our bisections pointed to this commit. Reverting it made the build pass again.

Greetings!

Daniel Díaz
daniel.diaz@xxxxxxxxxx