Re: [PATCH 5.15 000/245] 5.15.150-rc1 review

[Greg Kroah-Hartman]

On Tue, Feb 27, 2024 at 12:56:32PM -0600, Daniel Díaz wrote:
> Hello!
> 
> On 27/02/24 7:23 a. m., Greg Kroah-Hartman wrote:
> > This is the start of the stable review cycle for the 5.15.150 release.
> > There are 245 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, 29 Feb 2024 13:15:36 +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-5.15.150-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-5.15.y
> > and the diffstat can be found below.
> > 
> > thanks,
> > 
> > greg k-h
> 
> We're seeing build regressions here with RISC-V, with GCC 8, GCC 12, and Clang 17:
> 
> -----8<-----
>   In file included from /builds/linux/include/linux/list.h:9,
>                    from /builds/linux/include/linux/module.h:12,
>                    from /builds/linux/drivers/net/ethernet/realtek/r8169_main.c:12:
>   /builds/linux/drivers/net/ethernet/realtek/r8169_main.c:5512:35: error: 'rtl8169_pm_ops' undeclared here (not in a function); did you mean 'rtl8169_poll'?
>    5512 |         .driver.pm      = pm_ptr(&rtl8169_pm_ops),
>         |                                   ^~~~~~~~~~~~~~
>   /builds/linux/include/linux/kernel.h:46:44: note: in definition of macro 'PTR_IF'
>      46 | #define PTR_IF(cond, ptr)       ((cond) ? (ptr) : NULL)
>         |                                            ^~~
>   /builds/linux/drivers/net/ethernet/realtek/r8169_main.c:5512:27: note: in expansion of macro 'pm_ptr'
>    5512 |         .driver.pm      = pm_ptr(&rtl8169_pm_ops),
>         |                           ^~~~~~
>   make[5]: *** [/builds/linux/scripts/Makefile.build:289: drivers/net/ethernet/realtek/r8169_main.o] Error 1
> ----->8-----
> 
> Bisection points to:
> 
>   commit ac2871f646a8f556203f5b6be875ce406d855ddb
>   Author: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
>   Date:   Tue Dec 7 00:20:59 2021 +0000
>       PM: core: Redefine pm_ptr() macro
>       [ Upstream commit c06ef740d401d0f4ab188882bf6f8d9cf0f75eaf ]
> 
> A revert could not be done cleanly.
> 
> Tuxmake reproducer:
> 
>   tuxmake --runtime podman --target-arch riscv --toolchain gcc-12 --kconfig defconfig
> 
> Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>

I've been beating on this for a while and I really don't know what is
happening, sorry.  The driver looks fine, something is "odd" with riscv
here that is not "odd" with other arches.

I'll leave this as-is for now and hopefully someone who relies on riscv
can help track it down.

thanks,

greg k-h