On Sun, 2 Jul 2017 09:02:09 +0800 kbuild test robot <fengguang.wu@xxxxxxxxx> wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git thin-ar > head: 42317ea79d9af0a83b6cfdfe43c27a91d468bfb1 > commit: 799c43415442414b1032580c47684cb709dfed6d [11/12] kbuild: thin archives make default for all archs > config: microblaze-allnoconfig (attached as .config) > compiler: microblaze-linux-gcc (GCC) 6.2.0 > reproduce: > wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > git checkout 799c43415442414b1032580c47684cb709dfed6d > # save the attached .config to linux build tree > make.cross ARCH=microblaze > > All errors (new ones prefixed by >>): > > mm/slub.o: In function `__slab_free.isra.13': > >> (.text+0x1038): undefined reference to `_GLOBAL_OFFSET_TABLE_' > scripts/link-vmlinux.sh: line 93: 23109 Segmentation fault ${LD} ${LDFLAGS} ${LDFLAGS_vmlinux} -o ${2} -T ${lds} ${objects} Maybe it is due to this bug: https://sourceware.org/bugzilla/show_bug.cgi?id=21017 It seems to link correctly using the 2.23.52.20130512 binutils that comes with kernel.org crosstool https://www.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.8.0/ If this is the case, I think it's because this linking is resulting in better code (AFAICT GOTOFF is preferable to GOT), so I think we could just accept this as a bug in the toolchain version. Thanks, Nick -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
