tree: https://git.kernel.org/pub/scm/linux/kernel/git/boqun/linux.git arm64-64k head: 77ab5d483f012ac5cfd6017e4d11b1b601ebb497 commit: 4fc7c26337e297884de34cefc7ca3c07704125a5 [14/22] Drivers: hv: vmbus: Introduce types of GPADL config: x86_64-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): git checkout 4fc7c26337e297884de34cefc7ca3c07704125a5 # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): 39 | #define HV_RING_SIZE 512 /* pages */ | In file included from drivers/uio/uio_hv_generic.c:29: include/linux/hyperv.h:166: note: this is the location of the previous definition 166 | #define HV_RING_SIZE(payload_sz) PAGE_ALIGN(sizeof(struct hv_ring_buffer) + \ | # https://git.kernel.org/pub/scm/linux/kernel/git/boqun/linux.git/commit/?i... git remote add boqun https://git.kernel.org/pub/scm/linux/kernel/git/boqun/linux.git git fetch --no-tags boqun arm64-64k git checkout 4fc7c26337e297884de34cefc7ca3c07704125a5 vim +/HV_RING_SIZE +39 drivers/uio/uio_hv_generic.c 95096f2fbd1018 Stephen Hemminger 2016-12-03 38 e7d214642a19b8 Stephen Hemminger 2018-01-09 @39 #define HV_RING_SIZE 512 /* pages */ 108ddb8fa1fc31 Stephen Hemminger 2018-08-10 40 #define SEND_BUFFER_SIZE (16 * 1024 * 1024) 108ddb8fa1fc31 Stephen Hemminger 2018-08-10 41 #define RECV_BUFFER_SIZE (31 * 1024 * 1024) e7d214642a19b8 Stephen Hemminger 2018-01-09 42 :::::: The code at line 39 was first introduced by commit :::::: e7d214642a19b8e0e7ecda39184c2ab98ba4801f uio_hv_generic: create send and receive buffers :::::: TO: Stephen Hemminger <stephen(a)networkplumber.org&gt; :::::: CC: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org