tree: https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux.git habanalabs-next head: 7ff0882e4eb53de988df67bc47c0d153dc343962 commit: bff4f13b946858c7fb2c1e56d7b34a4109fae5f7 [51/55] habanalabs: add userptr_lookup node in debugfs config: riscv-randconfig-r042-20210816 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project d2b574a4dea5b718e4386bf2e26af0126e5978ce) 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 # install riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux.git/commit/... git remote add ogabbay https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux.git git fetch --no-tags ogabbay habanalabs-next git checkout bff4f13b946858c7fb2c1e56d7b34a4109fae5f7 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv 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 >>): dma_addr, userptr->pid, ^~~~~~~~ 1 warning generated. vim +360 drivers/misc/habanalabs/common/debugfs.c 322 323 static int userptr_lookup_show(struct seq_file *s, void *data) 324 { 325 struct hl_debugfs_entry *entry = s->private; 326 struct hl_dbg_device_entry *dev_entry = entry->dev_entry; 327 struct scatterlist *sg; 328 struct hl_userptr *userptr; 329 bool first = true; 330 u64 total_npages, npages, sg_start, sg_end; 331 dma_addr_t dma_addr; 332 int i; 333 334 spin_lock(&dev_entry->userptr_spinlock); 335 336 list_for_each_entry(userptr, &dev_entry->userptr_list, debugfs_list) { 337 if (dev_entry->userptr_lookup >= userptr->addr && 338 dev_entry->userptr_lookup < userptr->addr + userptr->size) { 339 total_npages = 0; 340 for_each_sg(userptr->sgt->sgl, sg, userptr->sgt->nents, 341 i) { 342 npages = hl_get_sg_info(sg, &dma_addr); 343 sg_start = userptr->addr + 344 total_npages * PAGE_SIZE; 345 sg_end = userptr->addr + 346 (total_npages + npages) * PAGE_SIZE; 347 348 if (dev_entry->userptr_lookup >= sg_start && 349 dev_entry->userptr_lookup < sg_end) { 350 dma_addr += (dev_entry->userptr_lookup - 351 sg_start); 352 if (first) { 353 first = false; 354 seq_puts(s, "\n"); 355 seq_puts(s, " user virtual address dma address pid region start region size\n"); 356 seq_puts(s, "---------------------------------------------------------------------------------------\n"); 357 } 358 seq_printf(s, " 0x%-18llx 0x%-16llx %-8u 0x%-16llx %-12llu\n", 359 dev_entry->userptr_lookup, 361 userptr->addr, userptr->size); 362 } 363 total_npages += npages; 364 } 365 } 366 } 367 368 spin_unlock(&dev_entry->userptr_spinlock); 369 370 if (!first) 371 seq_puts(s, "\n"); 372 373 return 0; 374 } 375 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org