[kees:memcpy/step2/next-20211206 7/19] drivers/video/fbdev/cirrusfb.c:1852:17: sparse: sparse: incorrect type in argument 1 (different address spaces)

From: kernel test robot
Date: Wed Dec 08 2021 - 11:45:55 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git memcpy/step2/next-20211206
head: 082faead4a3c2e5d9f541f97d8d4d5fa0f88dce0
commit: a91965903a44bf236856efc7e20c6334c4e07388 [7/19] fortify: Detect struct member overflows in memcpy() at compile-time
config: i386-randconfig-s002-20211207 (https://download.01.org/0day-ci/archive/20211209/202112090051.zPyOnn1p-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/kees/linux.git/commit/?id=a91965903a44bf236856efc7e20c6334c4e07388
git remote add kees https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git
git fetch --no-tags kees memcpy/step2/next-20211206
git checkout a91965903a44bf236856efc7e20c6334c4e07388
# 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/gpu/drm/gma500/ 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/cirrusfb.c:1852:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const * @@ got char [noderef] __iomem *screen_base @@
drivers/video/fbdev/cirrusfb.c:1852:17: sparse: expected void const *
drivers/video/fbdev/cirrusfb.c:1852:17: sparse: got char [noderef] __iomem *screen_base
>> drivers/video/fbdev/cirrusfb.c:1852:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const * @@ got char [noderef] __iomem *screen_base @@
drivers/video/fbdev/cirrusfb.c:1852:17: sparse: expected void const *
drivers/video/fbdev/cirrusfb.c:1852:17: sparse: got char [noderef] __iomem *screen_base
drivers/video/fbdev/cirrusfb.c:1852:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void * @@ got char [noderef] __iomem *screen_base @@
drivers/video/fbdev/cirrusfb.c:1852:17: sparse: expected void *
drivers/video/fbdev/cirrusfb.c:1852:17: sparse: got char [noderef] __iomem *screen_base

vim +1852 drivers/video/fbdev/cirrusfb.c

^1da177e4c3f41 drivers/video/cirrusfb.c Linus Torvalds 2005-04-16 1809
8503df65976d0f drivers/video/cirrusfb.c Krzysztof Helt 2007-10-16 1810 static void cirrusfb_imageblit(struct fb_info *info,
8503df65976d0f drivers/video/cirrusfb.c Krzysztof Helt 2007-10-16 1811 const struct fb_image *image)
^1da177e4c3f41 drivers/video/cirrusfb.c Linus Torvalds 2005-04-16 1812 {
^1da177e4c3f41 drivers/video/cirrusfb.c Linus Torvalds 2005-04-16 1813 struct cirrusfb_info *cinfo = info->par;
7cade31cabec33 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1814 unsigned char op = (info->var.bits_per_pixel == 24) ? 0xc : 0x4;
^1da177e4c3f41 drivers/video/cirrusfb.c Linus Torvalds 2005-04-16 1815
9e848062533207 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1816 if (info->state != FBINFO_STATE_RUNNING)
9e848062533207 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1817 return;
df3aafd57d590d drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1818 /* Alpine/SD64 does not work at 24bpp ??? */
df3aafd57d590d drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1819 if (info->flags & FBINFO_HWACCEL_DISABLED || image->depth != 1)
df3aafd57d590d drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1820 cfb_imageblit(info, image);
df3aafd57d590d drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1821 else if ((cinfo->btype == BT_ALPINE || cinfo->btype == BT_SD64) &&
df3aafd57d590d drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1822 op == 0xc)
^1da177e4c3f41 drivers/video/cirrusfb.c Linus Torvalds 2005-04-16 1823 cfb_imageblit(info, image);
9e848062533207 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1824 else {
9e848062533207 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1825 unsigned size = ((image->width + 7) >> 3) * image->height;
9e848062533207 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1826 int m = info->var.bits_per_pixel;
9e848062533207 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1827 u32 fg, bg;
9e848062533207 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1828
9e848062533207 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1829 if (info->var.bits_per_pixel == 8) {
9e848062533207 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1830 fg = image->fg_color;
9e848062533207 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1831 bg = image->bg_color;
9e848062533207 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1832 } else {
9e848062533207 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1833 fg = ((u32 *)(info->pseudo_palette))[image->fg_color];
9e848062533207 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1834 bg = ((u32 *)(info->pseudo_palette))[image->bg_color];
9e848062533207 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1835 }
7cade31cabec33 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1836 if (info->var.bits_per_pixel == 24) {
7cade31cabec33 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1837 /* clear background first */
7cade31cabec33 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1838 cirrusfb_RectFill(cinfo->regbase,
7cade31cabec33 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1839 info->var.bits_per_pixel,
7cade31cabec33 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1840 (image->dx * m) / 8, image->dy,
7cade31cabec33 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1841 (image->width * m) / 8,
7cade31cabec33 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1842 image->height,
7cade31cabec33 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1843 bg, bg,
7cade31cabec33 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1844 info->fix.line_length, 0x40);
7cade31cabec33 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1845 }
9e848062533207 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1846 cirrusfb_RectFill(cinfo->regbase,
9e848062533207 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1847 info->var.bits_per_pixel,
9e848062533207 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1848 (image->dx * m) / 8, image->dy,
9e848062533207 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1849 (image->width * m) / 8, image->height,
9e848062533207 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1850 fg, bg,
7cade31cabec33 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1851 info->fix.line_length, op);
9e848062533207 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 @1852 memcpy(info->screen_base, image->data, size);
9e848062533207 drivers/video/cirrusfb.c Krzysztof Helt 2009-03-31 1853 }
^1da177e4c3f41 drivers/video/cirrusfb.c Linus Torvalds 2005-04-16 1854 }
^1da177e4c3f41 drivers/video/cirrusfb.c Linus Torvalds 2005-04-16 1855

:::::: The code at line 1852 was first introduced by commit
:::::: 9e848062533207130667f6eaa748549367ccbedf cirrusfb: add imageblit function

:::::: TO: Krzysztof Helt <krzysztof.h1@xxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>

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

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