linux-kernel - [drm-drm-misc:drm-misc-next 1/7] drivers/gpu/drm/tiny/bochs.c:104:17: sparse: sparse: cast removes address space '_

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Date:   Mon, 5 Jul 2021 23:30:01 +0800
From:   kernel test robot <lkp@...el.com>
To:     Thomas Zimmermann <tzimmermann@...e.de>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [drm-drm-misc:drm-misc-next 1/7]
 drivers/gpu/drm/tiny/bochs.c:104:17: sparse: sparse: cast removes address
 space '__iomem' of expression

tree:   git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
head:   d9cc564bf3aee6fcc1c717a19f9a207114510671
commit: 796c3e35ac16776ff479c2a7d9e3036bf5ffd73f [1/7] drm/bochs: Move to tiny/
config: riscv-randconfig-s031-20210705 (attached as .config)
compiler: riscv32-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.3-341-g8af24329-dirty
        git remote add drm-drm-misc git://anongit.freedesktop.org/drm/drm-misc
        git fetch --no-tags drm-drm-misc drm-misc-next
        git checkout 796c3e35ac16776ff479c2a7d9e3036bf5ffd73f
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=riscv SHELL=/bin/bash drivers/gpu/drm/tiny/

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


sparse warnings: (new ones prefixed by >>)
>> drivers/gpu/drm/tiny/bochs.c:104:17: sparse: sparse: cast removes address space '__iomem' of expression
>> drivers/gpu/drm/tiny/bochs.c:104:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void * @@
   drivers/gpu/drm/tiny/bochs.c:104:17: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/gpu/drm/tiny/bochs.c:104:17: sparse:     got void *
   drivers/gpu/drm/tiny/bochs.c:118:24: sparse: sparse: cast removes address space '__iomem' of expression
>> drivers/gpu/drm/tiny/bochs.c:118:24: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *addr @@     got void * @@
   drivers/gpu/drm/tiny/bochs.c:118:24: sparse:     expected void const volatile [noderef] __iomem *addr
   drivers/gpu/drm/tiny/bochs.c:118:24: sparse:     got void *
   drivers/gpu/drm/tiny/bochs.c:131:17: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/gpu/drm/tiny/bochs.c:131:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void * @@
   drivers/gpu/drm/tiny/bochs.c:131:17: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/gpu/drm/tiny/bochs.c:131:17: sparse:     got void *
   drivers/gpu/drm/tiny/bochs.c:132:23: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/gpu/drm/tiny/bochs.c:132:23: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *addr @@     got void * @@
   drivers/gpu/drm/tiny/bochs.c:132:23: sparse:     expected void const volatile [noderef] __iomem *addr
   drivers/gpu/drm/tiny/bochs.c:132:23: sparse:     got void *
   drivers/gpu/drm/tiny/bochs.c:144:17: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/gpu/drm/tiny/bochs.c:144:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void * @@
   drivers/gpu/drm/tiny/bochs.c:144:17: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/gpu/drm/tiny/bochs.c:144:17: sparse:     got void *
   drivers/gpu/drm/tiny/bochs.c:145:17: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/gpu/drm/tiny/bochs.c:145:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got void * @@
   drivers/gpu/drm/tiny/bochs.c:145:17: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/gpu/drm/tiny/bochs.c:145:17: sparse:     got void *

vim +/__iomem +104 drivers/gpu/drm/tiny/bochs.c

    93	
    94	static void bochs_vga_writeb(struct bochs_device *bochs, u16 ioport, u8 val)
    95	{
    96		if (WARN_ON(ioport < 0x3c0 || ioport > 0x3df))
    97			return;
    98	
    99		if (bochs->mmio) {
   100			int offset = ioport - 0x3c0 + 0x400;
   101	
   102			writeb(val, bochs->mmio + offset);
   103		} else {
 > 104			outb(val, ioport);
   105		}
   106	}
   107	
   108	static u8 bochs_vga_readb(struct bochs_device *bochs, u16 ioport)
   109	{
   110		if (WARN_ON(ioport < 0x3c0 || ioport > 0x3df))
   111			return 0xff;
   112	
   113		if (bochs->mmio) {
   114			int offset = ioport - 0x3c0 + 0x400;
   115	
   116			return readb(bochs->mmio + offset);
   117		} else {
 > 118			return inb(ioport);
   119		}
   120	}
   121	

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

Download attachment ".config.gz" of type "application/gzip" (28056 bytes)