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