Hi Thomas, kernel test robot noticed the following build warnings: [auto build test WARNING on next-20230605] [cannot apply to drm-misc/drm-misc-next lee-backlight/for-backlight-next staging/staging-testing staging/staging-next staging/staging-linus linus/master lee-backlight/for-backlight-fixes v6.4-rc5 v6.4-rc4 v6.4-rc3 v6.4-rc5] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Thomas-Zimmermann/backlight-bd6107-Compare-against-struct-fb_info-device/20230605-225002 base: next-20230605 patch link: https://lore.kernel.org/r/20230605144812.15241-29-tzimmermann%40suse.de patch subject: [PATCH 28/30] fbdev/core: Move file-I/O code into separate file config: sparc-allyesconfig (https://download.01.org/0day-ci/archive/20230606/202306060527.syH2D4Is-lkp@xxxxxxxxx/config) compiler: sparc64-linux-gcc (GCC) 12.3.0 reproduce (this is a W=1 build): mkdir -p ~/bin wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/intel-lab-lkp/linux/commit/34fb1357f6464f1173e12cd241310efa5577dd79 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Thomas-Zimmermann/backlight-bd6107-Compare-against-struct-fb_info-device/20230605-225002 git checkout 34fb1357f6464f1173e12cd241310efa5577dd79 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross W=1 O=build_dir ARCH=sparc olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross W=1 O=build_dir ARCH=sparc SHELL=/bin/bash drivers/video/fbdev/core/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202306060527.syH2D4Is-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): drivers/video/fbdev/core/fb_devfs.c:174:9: error: unknown type name 'compat_caddr_t' 174 | compat_caddr_t smem_start; | ^~~~~~~~~~~~~~ drivers/video/fbdev/core/fb_devfs.c:183:9: error: unknown type name 'compat_caddr_t' 183 | compat_caddr_t mmio_start; | ^~~~~~~~~~~~~~ drivers/video/fbdev/core/fb_devfs.c:192:9: error: unknown type name 'compat_caddr_t' 192 | compat_caddr_t red; | ^~~~~~~~~~~~~~ drivers/video/fbdev/core/fb_devfs.c:193:9: error: unknown type name 'compat_caddr_t' 193 | compat_caddr_t green; | ^~~~~~~~~~~~~~ drivers/video/fbdev/core/fb_devfs.c:194:9: error: unknown type name 'compat_caddr_t' 194 | compat_caddr_t blue; | ^~~~~~~~~~~~~~ drivers/video/fbdev/core/fb_devfs.c:195:9: error: unknown type name 'compat_caddr_t' 195 | compat_caddr_t transp; | ^~~~~~~~~~~~~~ drivers/video/fbdev/core/fb_devfs.c: In function 'fb_getput_cmap': drivers/video/fbdev/core/fb_devfs.c:205:37: error: implicit declaration of function 'compat_ptr' [-Werror=implicit-function-declaration] 205 | if (copy_from_user(&cmap32, compat_ptr(arg), sizeof(cmap32))) | ^~~~~~~~~~ >> drivers/video/fbdev/core/fb_devfs.c:205:37: warning: passing argument 2 of 'copy_from_user' makes pointer from integer without a cast [-Wint-conversion] 205 | if (copy_from_user(&cmap32, compat_ptr(arg), sizeof(cmap32))) | ^~~~~~~~~~~~~~~ | | | int In file included from include/linux/sched/task.h:11, from include/linux/sched/signal.h:9, from include/linux/rcuwait.h:6, from include/linux/percpu-rwsem.h:7, from include/linux/fs.h:33, from include/linux/huge_mm.h:8, from include/linux/mm.h:989, from include/linux/kallsyms.h:13, from include/linux/ftrace.h:13, from include/linux/kprobes.h:28, from include/linux/kgdb.h:19, from include/linux/fb.h:6, from drivers/video/fbdev/core/fb_devfs.c:4: include/linux/uaccess.h:180:45: note: expected 'const void *' but argument is of type 'int' 180 | copy_from_user(void *to, const void __user *from, unsigned long n) | ~~~~~~~~~~~~~~~~~~~^~~~ >> drivers/video/fbdev/core/fb_devfs.c:211:27: warning: initialization of '__u16 *' {aka 'short unsigned int *'} from 'int' makes pointer from integer without a cast [-Wint-conversion] 211 | .red = compat_ptr(cmap32.red), | ^~~~~~~~~~ drivers/video/fbdev/core/fb_devfs.c:211:27: note: (near initialization for '(anonymous).red') drivers/video/fbdev/core/fb_devfs.c:212:27: warning: initialization of '__u16 *' {aka 'short unsigned int *'} from 'int' makes pointer from integer without a cast [-Wint-conversion] 212 | .green = compat_ptr(cmap32.green), | ^~~~~~~~~~ drivers/video/fbdev/core/fb_devfs.c:212:27: note: (near initialization for '(anonymous).green') drivers/video/fbdev/core/fb_devfs.c:213:27: warning: initialization of '__u16 *' {aka 'short unsigned int *'} from 'int' makes pointer from integer without a cast [-Wint-conversion] 213 | .blue = compat_ptr(cmap32.blue), | ^~~~~~~~~~ drivers/video/fbdev/core/fb_devfs.c:213:27: note: (near initialization for '(anonymous).blue') drivers/video/fbdev/core/fb_devfs.c:214:27: warning: initialization of '__u16 *' {aka 'short unsigned int *'} from 'int' makes pointer from integer without a cast [-Wint-conversion] 214 | .transp = compat_ptr(cmap32.transp), | ^~~~~~~~~~ drivers/video/fbdev/core/fb_devfs.c:214:27: note: (near initialization for '(anonymous).transp') drivers/video/fbdev/core/fb_devfs.c: In function 'fb_get_fscreeninfo': >> drivers/video/fbdev/core/fb_devfs.c:270:45: warning: passing argument 2 of 'do_fscreeninfo_to_user' makes pointer from integer without a cast [-Wint-conversion] 270 | return do_fscreeninfo_to_user(&fix, compat_ptr(arg)); | ^~~~~~~~~~~~~~~ | | | int drivers/video/fbdev/core/fb_devfs.c:228:70: note: expected 'struct fb_fix_screeninfo32 *' but argument is of type 'int' 228 | struct fb_fix_screeninfo32 __user *fix32) | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~ cc1: some warnings being treated as errors vim +/copy_from_user +205 drivers/video/fbdev/core/fb_devfs.c 197 198 static int fb_getput_cmap(struct fb_info *info, unsigned int cmd, 199 unsigned long arg) 200 { 201 struct fb_cmap32 cmap32; 202 struct fb_cmap cmap_from; 203 struct fb_cmap_user cmap; 204 > 205 if (copy_from_user(&cmap32, compat_ptr(arg), sizeof(cmap32))) 206 return -EFAULT; 207 208 cmap = (struct fb_cmap_user) { 209 .start = cmap32.start, 210 .len = cmap32.len, > 211 .red = compat_ptr(cmap32.red), 212 .green = compat_ptr(cmap32.green), 213 .blue = compat_ptr(cmap32.blue), 214 .transp = compat_ptr(cmap32.transp), 215 }; 216 217 if (cmd == FBIOPUTCMAP) 218 return fb_set_user_cmap(&cmap, info); 219 220 lock_fb_info(info); 221 cmap_from = info->cmap; 222 unlock_fb_info(info); 223 224 return fb_cmap_to_user(&cmap_from, &cmap); 225 } 226 227 static int do_fscreeninfo_to_user(struct fb_fix_screeninfo *fix, 228 struct fb_fix_screeninfo32 __user *fix32) 229 { 230 __u32 data; 231 int err; 232 233 err = copy_to_user(&fix32->id, &fix->id, sizeof(fix32->id)); 234 235 data = (__u32) (unsigned long) fix->smem_start; 236 err |= put_user(data, &fix32->smem_start); 237 238 err |= put_user(fix->smem_len, &fix32->smem_len); 239 err |= put_user(fix->type, &fix32->type); 240 err |= put_user(fix->type_aux, &fix32->type_aux); 241 err |= put_user(fix->visual, &fix32->visual); 242 err |= put_user(fix->xpanstep, &fix32->xpanstep); 243 err |= put_user(fix->ypanstep, &fix32->ypanstep); 244 err |= put_user(fix->ywrapstep, &fix32->ywrapstep); 245 err |= put_user(fix->line_length, &fix32->line_length); 246 247 data = (__u32) (unsigned long) fix->mmio_start; 248 err |= put_user(data, &fix32->mmio_start); 249 250 err |= put_user(fix->mmio_len, &fix32->mmio_len); 251 err |= put_user(fix->accel, &fix32->accel); 252 err |= copy_to_user(fix32->reserved, fix->reserved, 253 sizeof(fix->reserved)); 254 255 if (err) 256 return -EFAULT; 257 return 0; 258 } 259 260 static int fb_get_fscreeninfo(struct fb_info *info, unsigned int cmd, 261 unsigned long arg) 262 { 263 struct fb_fix_screeninfo fix; 264 265 lock_fb_info(info); 266 fix = info->fix; 267 if (info->flags & FBINFO_HIDE_SMEM_START) 268 fix.smem_start = 0; 269 unlock_fb_info(info); > 270 return do_fscreeninfo_to_user(&fix, compat_ptr(arg)); 271 } 272 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
