[linux-next:master 4916/7526] drivers/video/fbdev/hgafb.c:496:25: sparse: sparse: incorrect type in argument 1 (different address spaces)

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   196d330d7fb1e7cc0d85641c89ce4602cb36f12e
commit: 938a000e3f9bead24ea753286b3e4d2423275c9e [4916/7526] fortify: Detect struct member overflows in memmove() at compile-time
config: i386-randconfig-s001 (https://download.01.org/0day-ci/archive/20220224/202202240946.dxiu4YCc-lkp@xxxxxxxxx/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=938a000e3f9bead24ea753286b3e4d2423275c9e
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 938a000e3f9bead24ea753286b3e4d2423275c9e
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash drivers/video/fbdev/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>


sparse warnings: (new ones prefixed by >>)
>> drivers/video/fbdev/hgafb.c:496:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const * @@     got unsigned char [noderef] [usertype] __iomem *[assigned] dest @@
   drivers/video/fbdev/hgafb.c:496:25: sparse:     expected void const *
   drivers/video/fbdev/hgafb.c:496:25: sparse:     got unsigned char [noderef] [usertype] __iomem *[assigned] dest
>> drivers/video/fbdev/hgafb.c:496:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const * @@     got unsigned char [noderef] [usertype] __iomem *[assigned] src @@
   drivers/video/fbdev/hgafb.c:496:25: sparse:     expected void const *
   drivers/video/fbdev/hgafb.c:496:25: sparse:     got unsigned char [noderef] [usertype] __iomem *[assigned] src
>> drivers/video/fbdev/hgafb.c:496:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const * @@     got unsigned char [noderef] [usertype] __iomem *[assigned] dest @@
   drivers/video/fbdev/hgafb.c:496:25: sparse:     expected void const *
   drivers/video/fbdev/hgafb.c:496:25: sparse:     got unsigned char [noderef] [usertype] __iomem *[assigned] dest
>> drivers/video/fbdev/hgafb.c:496:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const * @@     got unsigned char [noderef] [usertype] __iomem *[assigned] src @@
   drivers/video/fbdev/hgafb.c:496:25: sparse:     expected void const *
   drivers/video/fbdev/hgafb.c:496:25: sparse:     got unsigned char [noderef] [usertype] __iomem *[assigned] src
>> drivers/video/fbdev/hgafb.c:496:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void * @@     got unsigned char [noderef] [usertype] __iomem *[assigned] dest @@
   drivers/video/fbdev/hgafb.c:496:25: sparse:     expected void *
   drivers/video/fbdev/hgafb.c:496:25: sparse:     got unsigned char [noderef] [usertype] __iomem *[assigned] dest
   drivers/video/fbdev/hgafb.c:496:25: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void const * @@     got unsigned char [noderef] [usertype] __iomem *[assigned] src @@
   drivers/video/fbdev/hgafb.c:496:25: sparse:     expected void const *
   drivers/video/fbdev/hgafb.c:496:25: sparse:     got unsigned char [noderef] [usertype] __iomem *[assigned] src
   drivers/video/fbdev/hgafb.c:507:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const * @@     got unsigned char [noderef] [usertype] __iomem *[assigned] dest @@
   drivers/video/fbdev/hgafb.c:507:25: sparse:     expected void const *
   drivers/video/fbdev/hgafb.c:507:25: sparse:     got unsigned char [noderef] [usertype] __iomem *[assigned] dest
   drivers/video/fbdev/hgafb.c:507:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const * @@     got unsigned char [noderef] [usertype] __iomem *[assigned] src @@
   drivers/video/fbdev/hgafb.c:507:25: sparse:     expected void const *
   drivers/video/fbdev/hgafb.c:507:25: sparse:     got unsigned char [noderef] [usertype] __iomem *[assigned] src
   drivers/video/fbdev/hgafb.c:507:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const * @@     got unsigned char [noderef] [usertype] __iomem *[assigned] dest @@
   drivers/video/fbdev/hgafb.c:507:25: sparse:     expected void const *
   drivers/video/fbdev/hgafb.c:507:25: sparse:     got unsigned char [noderef] [usertype] __iomem *[assigned] dest
   drivers/video/fbdev/hgafb.c:507:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const * @@     got unsigned char [noderef] [usertype] __iomem *[assigned] src @@
   drivers/video/fbdev/hgafb.c:507:25: sparse:     expected void const *
   drivers/video/fbdev/hgafb.c:507:25: sparse:     got unsigned char [noderef] [usertype] __iomem *[assigned] src
   drivers/video/fbdev/hgafb.c:507:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void * @@     got unsigned char [noderef] [usertype] __iomem *[assigned] dest @@
   drivers/video/fbdev/hgafb.c:507:25: sparse:     expected void *
   drivers/video/fbdev/hgafb.c:507:25: sparse:     got unsigned char [noderef] [usertype] __iomem *[assigned] dest
   drivers/video/fbdev/hgafb.c:507:25: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void const * @@     got unsigned char [noderef] [usertype] __iomem *[assigned] src @@
   drivers/video/fbdev/hgafb.c:507:25: sparse:     expected void const *
   drivers/video/fbdev/hgafb.c:507:25: sparse:     got unsigned char [noderef] [usertype] __iomem *[assigned] src

vim +496 drivers/video/fbdev/hgafb.c

^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  482  
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  483  static void hgafb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  484  {
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  485  	u_int rows, y1, y2;
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  486  	u8 __iomem *src;
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  487  	u8 __iomem *dest;
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  488  
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  489  	if (area->dy <= area->sy) {
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  490  		y1 = area->sy;
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  491  		y2 = area->dy;
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  492  
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  493  		for (rows = area->height; rows--; ) {
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  494  			src = rowaddr(info, y1) + (area->sx >> 3);
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  495  			dest = rowaddr(info, y2) + (area->dx >> 3);
529ed806d4540d drivers/video/hgafb.c Brent Cook     2010-12-31 @496  			memmove(dest, src, (area->width >> 3));
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  497  			y1++;
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  498  			y2++;
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  499  		}
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  500  	} else {
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  501  		y1 = area->sy + area->height - 1;
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  502  		y2 = area->dy + area->height - 1;
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  503  
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  504  		for (rows = area->height; rows--;) {
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  505  			src = rowaddr(info, y1) + (area->sx >> 3);
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  506  			dest = rowaddr(info, y2) + (area->dx >> 3);
529ed806d4540d drivers/video/hgafb.c Brent Cook     2010-12-31  507  			memmove(dest, src, (area->width >> 3));
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  508  			y1--;
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  509  			y2--;
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  510  		}
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  511  	}
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  512  }
^1da177e4c3f41 drivers/video/hgafb.c Linus Torvalds 2005-04-16  513  

:::::: The code at line 496 was first introduced by commit
:::::: 529ed806d4540d23ca2f68b28c3715d1566fc3ac video: Fix the HGA framebuffer driver

:::::: TO: Brent Cook <busterb@xxxxxxxxx>
:::::: CC: Paul Mundt <lethal@xxxxxxxxxxxx>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx




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