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Date:   Mon, 21 Feb 2022 00:23:13 +0800
From:   kernel test robot <lkp@...el.com>
To:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Christoph Hellwig <hch@....de>
Subject: drivers/watchdog/indydog.c:116:24: sparse: sparse: incorrect type in
 initializer (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   4f12b742eb2b3a850ac8be7dc4ed52976fc6cb0b
commit: ddb002d6d6af12c45dd9d565cadf0f40b36b7c25 MIPS: uaccess: Reduce number of nested macros
date:   10 months ago
config: mips-randconfig-s032-20220220 (https://download.01.org/0day-ci/archive/20220221/202202210058.Ytrak73L-lkp@intel.com/config)
compiler: mips64-linux-gcc (GCC) 11.2.0
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: v0.6.4-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ddb002d6d6af12c45dd9d565cadf0f40b36b7c25
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout ddb002d6d6af12c45dd9d565cadf0f40b36b7c25
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=mips SHELL=/bin/bash drivers/watchdog/

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 >>)
   command-line: note: in included file:
   builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined
   builtin:0:0: sparse: this was the original definition
   builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined
   builtin:0:0: sparse: this was the original definition
   builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined
   builtin:0:0: sparse: this was the original definition
   builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined
   builtin:0:0: sparse: this was the original definition
   drivers/watchdog/indydog.c:110:35: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void [noderef] __user *to @@     got struct watchdog_info * @@
   drivers/watchdog/indydog.c:110:35: sparse:     expected void [noderef] __user *to
   drivers/watchdog/indydog.c:110:35: sparse:     got struct watchdog_info *
>> drivers/watchdog/indydog.c:116:24: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected int [noderef] __user *__p @@     got int * @@
   drivers/watchdog/indydog.c:116:24: sparse:     expected int [noderef] __user *__p
   drivers/watchdog/indydog.c:116:24: sparse:     got int *
>> drivers/watchdog/indydog.c:119:21: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected int const [noderef] __user *__p @@     got int * @@
   drivers/watchdog/indydog.c:119:21: sparse:     expected int const [noderef] __user *__p
   drivers/watchdog/indydog.c:119:21: sparse:     got int *
   drivers/watchdog/indydog.c:135:24: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected int [noderef] __user *__p @@     got int * @@
   drivers/watchdog/indydog.c:135:24: sparse:     expected int [noderef] __user *__p
   drivers/watchdog/indydog.c:135:24: sparse:     got int *
   drivers/watchdog/indydog.c:153:27: sparse: sparse: incorrect type in initializer (incompatible argument 2 (different address spaces)) @@     expected long ( *write )( ... ) @@     got long ( * )( ... ) @@
   drivers/watchdog/indydog.c:153:27: sparse:     expected long ( *write )( ... )
   drivers/watchdog/indydog.c:153:27: sparse:     got long ( * )( ... )

vim +116 drivers/watchdog/indydog.c

^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16   97  
9b9dbcca3fa13a drivers/watchdog/indydog.c      Alan Cox         2008-05-19   98  static long indydog_ioctl(struct file *file, unsigned int cmd,
9b9dbcca3fa13a drivers/watchdog/indydog.c      Alan Cox         2008-05-19   99  							unsigned long arg)
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  100  {
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  101  	int options, retval = -EINVAL;
42747d712de56c drivers/watchdog/indydog.c      Wim Van Sebroeck 2009-12-26  102  	static const struct watchdog_info ident = {
e73a780272a46e drivers/watchdog/indydog.c      Wim Van Sebroeck 2009-05-11  103  		.options		= WDIOF_KEEPALIVEPING,
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  104  		.firmware_version	= 0,
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  105  		.identity		= "Hardware Watchdog for SGI IP22",
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  106  	};
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  107  
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  108  	switch (cmd) {
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  109  	case WDIOC_GETSUPPORT:
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  110  		if (copy_to_user((struct watchdog_info *)arg,
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  111  				 &ident, sizeof(ident)))
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  112  			return -EFAULT;
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  113  		return 0;
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  114  	case WDIOC_GETSTATUS:
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  115  	case WDIOC_GETBOOTSTATUS:
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16 @116  		return put_user(0, (int *)arg);
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  117  	case WDIOC_SETOPTIONS:
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  118  	{
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16 @119  		if (get_user(options, (int *)arg))
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  120  			return -EFAULT;
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  121  		if (options & WDIOS_DISABLECARD) {
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  122  			indydog_stop();
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  123  			retval = 0;
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  124  		}
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  125  		if (options & WDIOS_ENABLECARD) {
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  126  			indydog_start();
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  127  			retval = 0;
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  128  		}
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  129  		return retval;
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  130  	}
0c06090c9472db drivers/watchdog/indydog.c      Wim Van Sebroeck 2008-07-18  131  	case WDIOC_KEEPALIVE:
0c06090c9472db drivers/watchdog/indydog.c      Wim Van Sebroeck 2008-07-18  132  		indydog_ping();
0c06090c9472db drivers/watchdog/indydog.c      Wim Van Sebroeck 2008-07-18  133  		return 0;
0c06090c9472db drivers/watchdog/indydog.c      Wim Van Sebroeck 2008-07-18  134  	case WDIOC_GETTIMEOUT:
0c06090c9472db drivers/watchdog/indydog.c      Wim Van Sebroeck 2008-07-18  135  		return put_user(WATCHDOG_TIMEOUT, (int *)arg);
9b9dbcca3fa13a drivers/watchdog/indydog.c      Alan Cox         2008-05-19  136  	default:
9b9dbcca3fa13a drivers/watchdog/indydog.c      Alan Cox         2008-05-19  137  		return -ENOTTY;
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  138  	}
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  139  }
^1da177e4c3f41 drivers/char/watchdog/indydog.c Linus Torvalds   2005-04-16  140  

:::::: The code at line 116 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>

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

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