Re: [PATCH 6.1 000/167] 6.1.136-rc1 review

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

On Wed, Apr 30, 2025 at 04:09:18PM +0530, Naresh Kamboju wrote:
> On Tue, 29 Apr 2025 at 23:31, Greg Kroah-Hartman
> <gregkh@linuxfoundation.org> wrote:
> >
> > This is the start of the stable review cycle for the 6.1.136 release.
> > There are 167 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, 01 May 2025 16:10:15 +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-6.1.136-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
> 
> There are three build regressions and two build warnings.
> 
> 1)
> Regressions on x86_64 with defconfig builds with clang-nightly toolchain
> on the stable-rc 6.1.136-rc1.
> 
> * x86_64, build
>   - clang-nightly-lkftconfig
>   - clang-nightly-x86_64_defconfig
> 
> Regression Analysis:
>  - New regression? Yes
>  - Reproducibility? Yes
> 
> Build regression: x86_64 clang-nightly net ip.h error default
> initialization of an object of type 'typeof (rt->dst.expires)'
> 
> Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
> 
> ## Build error x86_64
> include/net/ip.h:462:14: error: default initialization of an object of
> type 'typeof (rt->dst.expires)' (aka 'const unsigned long') leaves the
> object uninitialized and is incompatible with C++
> [-Werror,-Wdefault-const-init-unsafe]
>   462 |                 if (mtu && time_before(jiffies, rt->dst.expires))
>       |                            ^

This isn't c++, so are you sure this isn't just a clang bug?

thanks,

greg k-h