tree: https://github.com/weiny2/linux-kernel.git tip-pks-v4-5.12-rc head: b8f2dcd125fa7a88ac29aabf06ff75ee220feb12 commit: 540c4a742db589e1cfba54ce1a26615b234f3790 [20/23] dax: Stray access protection for dax_direct_access() compiler: sparc64-linux-gcc (GCC) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; cppcheck possible warnings: (new ones prefixed by >>, may not real problems) long avail; ^ vim +350 drivers/dax/super.c b0686260fecaa9 Dan Williams 2017-01-26 341 540c4a742db589 Ira Weiny 2020-06-04 342 /** 540c4a742db589 Ira Weiny 2020-06-04 343 * dax_release_direct_access() - translate a device pgoff to an absolute pfn 540c4a742db589 Ira Weiny 2020-06-04 344 * 540c4a742db589 Ira Weiny 2020-06-04 345 * @dax_dev: a dax_device instance representing the logical memory range 540c4a742db589 Ira Weiny 2020-06-04 346 * @kaddr: virtual address returned from dax_direct_access() 540c4a742db589 Ira Weiny 2020-06-04 347 */ 540c4a742db589 Ira Weiny 2020-06-04 348 void dax_release_direct_access(struct dax_device *dax_dev, void *kaddr) 540c4a742db589 Ira Weiny 2020-06-04 349 { 540c4a742db589 Ira Weiny 2020-06-04 @350 long avail; 540c4a742db589 Ira Weiny 2020-06-04 351 540c4a742db589 Ira Weiny 2020-06-04 352 if (!dax_dev || !dax_alive(dax_dev)) 540c4a742db589 Ira Weiny 2020-06-04 353 return; 540c4a742db589 Ira Weiny 2020-06-04 354 540c4a742db589 Ira Weiny 2020-06-04 355 if (dax_dev->ops->release_direct_access) 540c4a742db589 Ira Weiny 2020-06-04 356 dax_dev->ops->release_direct_access(kaddr); 540c4a742db589 Ira Weiny 2020-06-04 357 } 540c4a742db589 Ira Weiny 2020-06-04 358 EXPORT_SYMBOL_GPL(dax_release_direct_access); 540c4a742db589 Ira Weiny 2020-06-04 359 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org