On 2/28/19 1:03 AM, kbuild test robot wrote: > Hi Jason, > > FYI, the error/warning still remains. > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > master > head: 7d762d69145a54d169f58e56d6dac57a5508debc > commit: 3a6532c9af1a7836da2d597f1aaca73cb16c3b97 RDMA/uverbs: Use > uverbs_attr_bundle to pass udata for write > date: 3 months ago > config: microblaze-allyesconfig (attached as .config) > compiler: microblaze-linux-gcc (GCC) 8.2.0 > reproduce: > wget > https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O > ~/bin/make.cross > chmod +x ~/bin/make.cross > git checkout 3a6532c9af1a7836da2d597f1aaca73cb16c3b97 > # save the attached .config to linux build tree > GCC_VERSION=8.2.0 make.cross ARCH=microblaze > > All errors (new ones prefixed by >>): > > `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: > defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o > `.exit.data' referenced in section `.exit.text' of drivers/tty/n_hdlc.o: > defined in discarded section `.exit.data' of drivers/tty/n_hdlc.o > drivers/infiniband/core/uverbs_main.o: In function `ib_uverbs_write': >>> drivers/infiniband/core/.tmp_gl_uverbs_main.o:(.text+0x13a4): undefined >>> reference to `__user_bad' > drivers/android/binder.o: In function `binder_thread_write': > drivers/android/.tmp_gl_binder.o:(.text+0xda6c): undefined reference to > `__user_bad' > drivers/android/.tmp_gl_binder.o:(.text+0xda98): undefined reference to > `__user_bad' > drivers/android/.tmp_gl_binder.o:(.text+0xdf10): undefined reference to > `__user_bad' > drivers/android/.tmp_gl_binder.o:(.text+0xe498): undefined reference to > `__user_bad' > drivers/android/binder.o:drivers/android/.tmp_gl_binder.o:(.text+0xea78): > more undefined references to `__user_bad' follow > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > https://lists.01.org/pipermail/kbuild-all Intel Corporation
Hi Michal, Would you comment on this, please? Jason has said more than once that these build errors are because arch/microblaze does not support get_user() of size 8 (bytes), although it does support a put_user() of size 8. See a previous report & comment at https://lore.kernel.org/lkml/[email protected]/ thanks. -- ~Randy
