drivers/video/fbdev/hgafb.c:496:25: sparse: sparse: incorrect type in argument 1 (different address spaces)

From: kernel test robot
Date: Mon Dec 02 2024 - 22:19:56 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: cdd30ebb1b9f36159d66f088b61aee264e649d7a
commit: 938a000e3f9bead24ea753286b3e4d2423275c9e fortify: Detect struct member overflows in memmove() at compile-time
date: 2 years, 10 months ago
config: i386-randconfig-063-20240106 (https://download.01.org/0day-ci/archive/20241203/202412031102.G0OBzQ8g-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.3.0-12) 11.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241203/202412031102.G0OBzQ8g-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202412031102.G0OBzQ8g-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

^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 482
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 483 static void hgafb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 484 {
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 485 u_int rows, y1, y2;
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 486 u8 __iomem *src;
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 487 u8 __iomem *dest;
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 488
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 489 if (area->dy <= area->sy) {
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 490 y1 = area->sy;
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 491 y2 = area->dy;
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 492
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 493 for (rows = area->height; rows--; ) {
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 494 src = rowaddr(info, y1) + (area->sx >> 3);
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 495 dest = rowaddr(info, y2) + (area->dx >> 3);
529ed806d4540d2 drivers/video/hgafb.c Brent Cook 2010-12-31 @496 memmove(dest, src, (area->width >> 3));
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 497 y1++;
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 498 y2++;
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 499 }
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 500 } else {
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 501 y1 = area->sy + area->height - 1;
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 502 y2 = area->dy + area->height - 1;
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 503
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 504 for (rows = area->height; rows--;) {
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 505 src = rowaddr(info, y1) + (area->sx >> 3);
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 506 dest = rowaddr(info, y2) + (area->dx >> 3);
529ed806d4540d2 drivers/video/hgafb.c Brent Cook 2010-12-31 507 memmove(dest, src, (area->width >> 3));
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 508 y1--;
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 509 y2--;
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 510 }
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 511 }
^1da177e4c3f415 drivers/video/hgafb.c Linus Torvalds 2005-04-16 512 }
^1da177e4c3f415 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
https://github.com/intel/lkp-tests/wiki

Next message: 万致远: "Re: [PATCH 2/2] net: phy: realtek: add dt property to disable broadcast PHY address"
Previous message: Furong Xu: "Re: [PATCH net v1] net: stmmac: TSO: Fix unbalanced DMA map/unmap for non-paged SKB data"
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