On 28/10/2021 07:46, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git wip/jgg-for-next > head: c200e6a625c01880074a0c8137361dd8a927fbb4 > commit: 4f9e1c0814f9ca8002820d4f7a38d0992add454e [89/95] RDMA/umem: Allow pinned dmabuf umem usage > config: ia64-defconfig (attached as .config) > compiler: ia64-linux-gcc (GCC) 11.2.0 > reproduce (this is a W=1 build): > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git/commit/?id=4f9e1c0814f9ca8002820d4f7a38d0992add454e > git remote add rdma https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git > git fetch --no-tags rdma wip/jgg-for-next > git checkout 4f9e1c0814f9ca8002820d4f7a38d0992add454e > # save the attached .config to linux build tree > mkdir build_dir > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=ia64 SHELL=/bin/bash > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp@xxxxxxxxx> > > All error/warnings (new ones prefixed by >>): > > In file included from drivers/infiniband/core/uverbs.h:47, > from drivers/infiniband/core/nldev.c:44: >>> include/rdma/ib_umem.h:187:24: warning: no previous prototype for 'ib_umem_dmabuf_get_pinned' [-Wmissing-prototypes] > 187 | struct ib_umem_dmabuf *ib_umem_dmabuf_get_pinned(struct ib_device *device, > | ^~~~~~~~~~~~~~~~~~~~~~~~~ > -- > ia64-linux-ld: drivers/infiniband/core/ib_core_uverbs.o: in function `ib_umem_dmabuf_get_pinned': >>> (.text+0x1320): multiple definition of `ib_umem_dmabuf_get_pinned'; drivers/infiniband/core/nldev.o:(.text+0xc260): first defined here >>> Oh crap, this obviously needs a 'static inline'.. Jason do you want to squash it or should I submit a patch?