On Thu, 22 Sep 2016 13:50:21 +0800 kbuild test robot <fengguang.wu@xxxxxxxxx> wrote: > Hi Jesper, > > FYI, the error/warning still remains. > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: 7d1e042314619115153a0f6f06e4552c09a50e13 > commit: d0ecd894e3d5f768a84403b34019c4a7daa05882 slub: optimize bulk slowpath free by detached freelist > date: 10 months ago > config: microblaze-allnoconfig (attached as .config) > compiler: microblaze-linux-gcc (GCC) 6.2.0 > reproduce: > wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > git checkout d0ecd894e3d5f768a84403b34019c4a7daa05882 > # save the attached .config to linux build tree > make.cross ARCH=microblaze > > All errors (new ones prefixed by >>): > > mm/built-in.o: In function `__slab_free.isra.14': > >> mm/slub.o:(.text+0x28d1c): undefined reference to `_GLOBAL_OFFSET_TABLE_' > scripts/link-vmlinux.sh: line 52: 18051 Segmentation fault ${LD} ${LDFLAGS} ${LDFLAGS_vmlinux} -o ${2} -T ${lds} ${KBUILD_VMLINUX_INIT} --start-group ${KBUILD_VMLINUX_MAIN} --end-group ${1} Hi Fengguang, I don't really understand if this is a real bug that I need to fix? It looks like a linker problem, resulting in a "Segmentation fault" for your script... The mentioned commit: d0ecd894e3d5f768a84 removes a call point to __slab_free() and instead call slab_free(). It does not make sense to my, why this results in a linker error on this ARCH=microblaze. -- Best regards, Jesper Dangaard Brouer MSc.CS, Principal Kernel Engineer at Red Hat Author of http://www.iptv-analyzer.org LinkedIn: http://www.linkedin.com/in/brouer -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>