Hi Vivek, url: https://github.com/intel-lab-lkp/linux/commits/Vivek-Kasireddy/udmabuf-Set-the-DMA-mask-for-the-udmabuf-device/20220520-144218 base: git://anongit.freedesktop.org/drm/drm-tip drm-tip config: x86_64-randconfig-m001 (https://download.01.org/0day-ci/archive/20220521/202205210319.OvuI0mKr-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-1) 11.3.0 If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> New smatch warnings: drivers/dma-buf/udmabuf.c:383 udmabuf_dev_init() warn: '&udmabuf_misc' from misc_register() not released on lines: 380. vim +383 drivers/dma-buf/udmabuf.c fbb0de79507819 Gerd Hoffmann 2018-08-27 366 static int __init udmabuf_dev_init(void) fbb0de79507819 Gerd Hoffmann 2018-08-27 367 { 0fdcc793991b9f Vivek Kasireddy 2022-05-19 368 int ret; 0fdcc793991b9f Vivek Kasireddy 2022-05-19 369 0fdcc793991b9f Vivek Kasireddy 2022-05-19 370 ret = misc_register(&udmabuf_misc); 0fdcc793991b9f Vivek Kasireddy 2022-05-19 371 if (ret < 0) { 0fdcc793991b9f Vivek Kasireddy 2022-05-19 372 pr_err("Could not initialize udmabuf device\n"); 0fdcc793991b9f Vivek Kasireddy 2022-05-19 373 return ret; 0fdcc793991b9f Vivek Kasireddy 2022-05-19 374 } 0fdcc793991b9f Vivek Kasireddy 2022-05-19 375 0fdcc793991b9f Vivek Kasireddy 2022-05-19 376 ret = dma_coerce_mask_and_coherent(udmabuf_misc.this_device, 0fdcc793991b9f Vivek Kasireddy 2022-05-19 377 DMA_BIT_MASK(64)); 0fdcc793991b9f Vivek Kasireddy 2022-05-19 378 if (ret < 0) { 0fdcc793991b9f Vivek Kasireddy 2022-05-19 379 pr_err("Could not setup DMA mask for udmabuf device\n"); misc_unregister()? 0fdcc793991b9f Vivek Kasireddy 2022-05-19 380 return ret; 0fdcc793991b9f Vivek Kasireddy 2022-05-19 381 } 0fdcc793991b9f Vivek Kasireddy 2022-05-19 382 0fdcc793991b9f Vivek Kasireddy 2022-05-19 @383 return 0; fbb0de79507819 Gerd Hoffmann 2018-08-27 384 } -- 0-DAY CI Kernel Test Service https://01.org/lkp
