tree: https://github.com/jgunthorpe/linux iommufd head: 6b5b3f20ed6b64824c2d447b4f4555fcb390bf3b commit: 6b5b3f20ed6b64824c2d447b4f4555fcb390bf3b [31/31] mad musings config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20220209/202202091306.YxErokC5-lk...) compiler: arceb-elf-gcc (GCC) 11.2.0 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 # https://github.com/jgunthorpe/linux/commit/6b5b3f20ed6b64824c2d447b4f4555... git remote add jgunthorpe https://github.com/jgunthorpe/linux git fetch --no-tags jgunthorpe iommufd git checkout 6b5b3f20ed6b64824c2d447b4f4555fcb390bf3b # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arc SHELL=/bin/bash drivers/iommu/iommufd/ 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/iommu/iommufd/device.c: In function 'iommufd_device_attach_sw': 122 | struct iommufd_ioas_pagetable *ioaspt; | ^~~~~~ vim +/ioaspt +122 drivers/iommu/iommufd/device.c 119 120 static int iommufd_device_attach_sw(struct iommufd_device *idev, u32 *pt_id) 121 { 123 struct iommufd_object *obj; 124 125 obj = iommufd_get_object(idev->ictx, *pt_id, 126 IOMMUFD_OBJ_IOAS_PAGETABLE); 127 if (IS_ERR(obj)) 128 return PTR_ERR(obj); 129 ioaspt = container_of(obj, struct iommufd_ioas_pagetable, obj); 130 iommufd_put_object_keep_user(obj); 131 //idev->ioaspt = ioaspt; 132 return 0; 133 } 134 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org