Hi Christoph, kernel test robot noticed the following build errors: [auto build test ERROR on mst-vhost/linux-next] [also build test ERROR on linus/master v6.15-rc4 next-20250430] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Christoph-Hellwig/vringh-use-bvec_kmap_local/20250430-220531 base: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next patch link: https://lore.kernel.org/r/20250430140004.2724391-1-hch%40lst.de patch subject: [PATCH] vringh: use bvec_kmap_local config: arm64-randconfig-003-20250501 (https://download.01.org/0day-ci/archive/20250501/202505011754.RqgPPZa9-lkp@xxxxxxxxx/config) compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project f819f46284f2a79790038e1f6649172789734ae8) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250501/202505011754.RqgPPZa9-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202505011754.RqgPPZa9-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> drivers/vhost/vringh.c:1332:36: error: incompatible pointer types passing 'struct bio_vec *' to parameter of type 'struct page *' [-Werror,-Wincompatible-pointer-types] 1332 | __virtio16 *to = kmap_local_page(&ivec.iov.bvec[0]); | ^~~~~~~~~~~~~~~~~ include/linux/highmem.h:96:50: note: passing argument to parameter 'page' here 96 | static inline void *kmap_local_page(struct page *page); | ^ 1 error generated. vim +1332 drivers/vhost/vringh.c 1304 1305 static inline int putu16_iotlb(const struct vringh *vrh, 1306 __virtio16 *p, u16 val) 1307 { 1308 struct iotlb_vec ivec; 1309 union { 1310 struct iovec iovec; 1311 struct bio_vec bvec; 1312 } iov; 1313 __virtio16 tmp; 1314 int ret; 1315 1316 ivec.iov.iovec = &iov.iovec; 1317 ivec.count = 1; 1318 1319 /* Atomic write is needed for putu16 */ 1320 ret = iotlb_translate(vrh, (u64)(uintptr_t)p, sizeof(*p), 1321 NULL, &ivec, VHOST_MAP_RO); 1322 if (ret < 0) 1323 return ret; 1324 1325 tmp = cpu_to_vringh16(vrh, val); 1326 1327 if (vrh->use_va) { 1328 ret = __put_user(tmp, (__virtio16 __user *)ivec.iov.iovec[0].iov_base); 1329 if (ret) 1330 return ret; 1331 } else { > 1332 __virtio16 *to = kmap_local_page(&ivec.iov.bvec[0]); 1333 1334 WRITE_ONCE(*to, tmp); 1335 kunmap_local(to); 1336 } 1337 1338 return 0; 1339 } 1340 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
