Re: [PATCH] kbuild: avoid static_assert for genksyms

[Ard Biesheuvel]

On Sun, 6 Dec 2020 at 03:49, Masahiro Yamada <masahiroy@xxxxxxxxxx> wrote:
>
> On Fri, Dec 4, 2020 at 8:10 AM Arnd Bergmann <arnd@xxxxxxxxxx> wrote:
> >
> > From: Arnd Bergmann <arnd@xxxxxxxx>
> >
> > genksyms does not know or care about the _Static_assert() built-in,
> > and sometimes falls back to ignoring the later symbols, which causes
> > undefined behavior such as
> >
> > WARNING: modpost: EXPORT symbol "ethtool_set_ethtool_phy_ops" [vmlinux] version generation failed, symbol will not be versioned.
> > ld: net/ethtool/common.o: relocation R_AARCH64_ABS32 against `__crc_ethtool_set_ethtool_phy_ops' can not be used when making a shared object
> > net/ethtool/common.o:(_ftrace_annotated_branch+0x0): dangerous relocation: unsupported relocation
> >
> > Redefine static_assert for genksyms to avoid that.
>
>
> Please tell the CONFIG options needed to reproduce this.
> I do not see it.
>

https://people.linaro.org/~ard.biesheuvel/randconfig-modversions-error