tree: https://github.com/HabanaAI/linux.git habanalabs-next head: 91c010442fcde7865302198c1173cf7f81399f83 commit: 91c010442fcde7865302198c1173cf7f81399f83 [21/21] [PATCH] habanalabs: make use of dma_mmap_coherent config: arc-allyesconfig (attached as .config) compiler: arc-elf-gcc (GCC) 9.3.0 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 git checkout 91c010442fcde7865302198c1173cf7f81399f83 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc 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 >>): drivers/misc/habanalabs/common/command_buffer.c: In function 'hl_cb_mmap': 346 | rc = hdev->asic_funcs->cb_mmap(hdev, vma, (void *) cb->kernel_address, | ^ # https://github.com/HabanaAI/linux/commit/91c010442fcde7865302198c1173cf7f... git remote add habanaai https://github.com/HabanaAI/linux.git git fetch --no-tags habanaai habanalabs-next git checkout 91c010442fcde7865302198c1173cf7f81399f83 vim +346 drivers/misc/habanalabs/common/command_buffer.c 297 298 int hl_cb_mmap(struct hl_fpriv *hpriv, struct vm_area_struct *vma) 299 { 300 struct hl_device *hdev = hpriv->hdev; 301 struct hl_cb *cb; 302 u32 handle; 303 int rc; 304 305 handle = vma->vm_pgoff; 306 307 /* reference was taken here */ 308 cb = hl_cb_get(hdev, &hpriv->cb_mgr, handle); 309 if (!cb) { 310 dev_err(hdev->dev, 311 "CB mmap failed, no match to handle 0x%x\n", handle); 312 return -EINVAL; 313 } 314 315 /* Validation check */ 316 if ((vma->vm_end - vma->vm_start) != ALIGN(cb->size, PAGE_SIZE)) { 317 dev_err(hdev->dev, 318 "CB mmap failed, mmap size 0x%lx != 0x%x cb size\n", 319 vma->vm_end - vma->vm_start, cb->size); 320 rc = -EINVAL; 321 goto put_cb; 322 } 323 324 spin_lock(&cb->lock); 325 326 if (cb->mmap) { 327 dev_err(hdev->dev, 328 "CB mmap failed, CB already mmaped to user\n"); 329 rc = -EINVAL; 330 goto release_lock; 331 } 332 333 cb->mmap = true; 334 335 spin_unlock(&cb->lock); 336 337 vma->vm_ops = &cb_vm_ops; 338 339 /* 340 * Note: We're transferring the cb reference to 341 * vma->vm_private_data here. 342 */ 343 344 vma->vm_private_data = cb; 345 347 cb->bus_address, cb->size); 348 if (rc) { 349 spin_lock(&cb->lock); 350 cb->mmap = false; 351 goto release_lock; 352 } 353 354 cb->mmap_size = cb->size; 355 356 return 0; 357 358 release_lock: 359 spin_unlock(&cb->lock); 360 put_cb: 361 hl_cb_put(cb); 362 return rc; 363 } 364 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org