linux-kernel - drivers/fpga/dfl-fme-main.c:143:13: sparse: sparse: incorrect type in argument 1 (different address spaces)

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Date:   Mon, 30 Nov 2020 05:07:03 +0800
From:   kernel test robot <lkp@...el.com>
To:     Luc Van Oostenryck <luc.vanoostenryck@...il.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
Subject: drivers/fpga/dfl-fme-main.c:143:13: sparse: sparse: incorrect type
 in argument 1 (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   aae5ab854e38151e69f261dbf0e3b7e396403178
commit: e5fc436f06eef54ef512ea55a9db8eb9f2e76959 sparse: use static inline for __chk_{user,io}_ptr()
date:   3 months ago
config: sh-randconfig-s032-20201130 (attached as .config)
compiler: sh4-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: v0.6.3-170-g3bc348f6-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e5fc436f06eef54ef512ea55a9db8eb9f2e76959
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout e5fc436f06eef54ef512ea55a9db8eb9f2e76959
        # 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__' ARCH=sh 

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/fpga/dfl-fme-main.c:143:13: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected int const *__gu_addr @@     got int [noderef] __user * @@
   drivers/fpga/dfl-fme-main.c:143:13: sparse:     expected int const *__gu_addr
   drivers/fpga/dfl-fme-main.c:143:13: sparse:     got int [noderef] __user *
>> drivers/fpga/dfl-fme-main.c:143:13: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __user *ptr @@     got int const *__gu_addr @@
>> drivers/fpga/dfl-fme-main.c:143:13: sparse:     expected void const volatile [noderef] __user *ptr
   drivers/fpga/dfl-fme-main.c:143:13: sparse:     got int const *__gu_addr
   drivers/fpga/dfl-fme-main.c:155:13: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected int const *__gu_addr @@     got int [noderef] __user * @@
   drivers/fpga/dfl-fme-main.c:155:13: sparse:     expected int const *__gu_addr
   drivers/fpga/dfl-fme-main.c:155:13: sparse:     got int [noderef] __user *
   drivers/fpga/dfl-fme-main.c:155:13: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __user *ptr @@     got int const *__gu_addr @@
   drivers/fpga/dfl-fme-main.c:155:13: sparse:     expected void const volatile [noderef] __user *ptr
   drivers/fpga/dfl-fme-main.c:155:13: sparse:     got int const *__gu_addr
--
   net/rose/af_rose.c:438:13: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected int const *__gu_addr @@     got int [noderef] __user *optlen @@
   net/rose/af_rose.c:438:13: sparse:     expected int const *__gu_addr
   net/rose/af_rose.c:438:13: sparse:     got int [noderef] __user *optlen
>> net/rose/af_rose.c:438:13: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __user *ptr @@     got int const *__gu_addr @@
>> net/rose/af_rose.c:438:13: sparse:     expected void const volatile [noderef] __user *ptr
   net/rose/af_rose.c:438:13: sparse:     got int const *__gu_addr

vim +143 drivers/fpga/dfl-fme-main.c

0a27ff24d59662b Kang Luwei 2018-06-30  136  
69bb18ddfc4331b Wu Hao     2019-08-04  137  static long fme_hdr_ioctl_release_port(struct dfl_feature_platform_data *pdata,
69bb18ddfc4331b Wu Hao     2019-08-04  138  				       unsigned long arg)
69bb18ddfc4331b Wu Hao     2019-08-04  139  {
69bb18ddfc4331b Wu Hao     2019-08-04  140  	struct dfl_fpga_cdev *cdev = pdata->dfl_cdev;
69bb18ddfc4331b Wu Hao     2019-08-04  141  	int port_id;
69bb18ddfc4331b Wu Hao     2019-08-04  142  
69bb18ddfc4331b Wu Hao     2019-08-04 @143  	if (get_user(port_id, (int __user *)arg))
69bb18ddfc4331b Wu Hao     2019-08-04  144  		return -EFAULT;
69bb18ddfc4331b Wu Hao     2019-08-04  145  
69bb18ddfc4331b Wu Hao     2019-08-04  146  	return dfl_fpga_cdev_release_port(cdev, port_id);
69bb18ddfc4331b Wu Hao     2019-08-04  147  }
69bb18ddfc4331b Wu Hao     2019-08-04  148  

:::::: The code at line 143 was first introduced by commit
:::::: 69bb18ddfc4331ba1dea9db811caf93e95726408 fpga: dfl: fme: add DFL_FPGA_FME_PORT_RELEASE/ASSIGN ioctl support.

:::::: TO: Wu Hao <hao.wu@...el.com>
:::::: CC: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

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

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