Re: [PATCH 6.1 000/291] 6.1.135-rc1 review

[Naresh Kamboju]

On Wed, 23 Apr 2025 at 20:16, Greg Kroah-Hartman
<gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
>
> This is the start of the stable review cycle for the 6.1.135 release.
> There are 291 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 Fri, 25 Apr 2025 14:25:27 +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-6.1.135-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-6.1.y
> and the diffstat can be found below.
>
> thanks,
>
> greg k-h

Regressions on arm, riscv and x86_64 with following kernel configs with
clang-20 and clang-nightly toolchains on stable-rc 6.1.135-rc1.

Build regressions:
* arm, build
  - clang-20-allmodconfig

* i386, build
  - clang-nightly-lkftconfig-kselftest

* riscv, build
  - clang-20-allmodconfig

* x86_64, build
  - clang-20-allmodconfig
  - clang-nightly-lkftconfig-kselftest

Regression Analysis:
 - New regression? Yes
 - Reproducibility? Yes

Build regression: arm allmodconfig variable 'is_redirect' is used
uninitialized whenever 'if' condition is true

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

## Build error:
net/sched/act_mirred.c:265:6: error: variable 'is_redirect' is used
uninitialized whenever 'if' condition is true
[-Werror,-Wsometimes-uninitialized]
  265 |         if (unlikely(!(dev->flags & IFF_UP)) ||
!netif_carrier_ok(dev)) {
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

## Source
* Kernel version: 6.1.135-rc1
* Git tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
* Git sha: b8b5da130779a27bf7d189bd3b40ebf59ee0e0e9
* Git describe: v6.1.134-292-gb8b5da130779
* Project details:
https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.1.y/build/v6.1.134-292-gb8b5da130779
* Architectures: arm riscv x86_64
* Toolchains: clang-20, clang-nightly
* Kconfigs: allmodconfig

## Build
* Build log: https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.1.y/build/v6.1.134-292-gb8b5da130779/testrun/28211709/suite/build/test/clang-20-allmodconfig/log
* Build history:
https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.1.y/build/v6.1.134-292-gb8b5da130779/testrun/28211709/suite/build/test/clang-20-allmodconfig/history/
* Build details:
https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-6.1.y/build/v6.1.134-292-gb8b5da130779/testrun/28211709/suite/build/test/clang-20-allmodconfig/details/
* Build link: https://storage.tuxsuite.com/public/linaro/lkft/builds/2w8QtyR8377WMNLrbtsmGi2lkaI/
* Kernel config:
https://storage.tuxsuite.com/public/linaro/lkft/builds/2w8QtyR8377WMNLrbtsmGi2lkaI/config

## Steps to reproduce on riscv
 - tuxmake --runtime podman --target-arch arm --toolchain clang-20
--kconfig allmodconfig LLVM=1 LLVM_IAS=1

--
Linaro LKFT
https://lkft.linaro.org