On Wed, Oct 07, 2020 at 01:14:47PM +0200, Borislav Petkov wrote:
> On Tue, Oct 06, 2020 at 09:57:09AM -0000, tip-bot2 for Dan Williams wrote:
> > + /* Copy successful. Return zero */
> > +.L_done_memcpy_trap:
> > + xorl %eax, %eax
> > +.L_done:
> > + ret
> > +SYM_FUNC_END(copy_mc_fragile)
> > +EXPORT_SYMBOL_GPL(copy_mc_fragile)
>
> That export together with CONFIG_MODVERSIONS causes
>
> WARNING: modpost: EXPORT symbol "copy_mc_fragile" [vmlinux] version generation failed, symbol will not be versioned.
>
> here.
>
> I don't see why tho...
It doesn't look like it is toolchain-specific and in both cases,
copy_mc_fragile's checksum is 0.
SUSE Leap 15.1:
Name : binutils
Version : 2.32-lp151.3.6.1
$ grep -E "(copy_mc_fragile|copy_user_generic_unrolled)" Module.symvers
0x00000000 copy_mc_fragile vmlinux EXPORT_SYMBOL_GPL
0xecdcabd2 copy_user_generic_unrolled vmlinux EXPORT_SYMBOL
debian testing:
Package: binutils
Version: 2.35-2
$ grep -E "(copy_mc_fragile|copy_user_generic_unrolled)" Module.symvers
0x00000000 copy_mc_fragile vmlinux EXPORT_SYMBOL_GPL
0xecdcabd2 copy_user_generic_unrolled vmlinux EXPORT_SYMBOL
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
