linux-kernel - Re: [PATCH 2/3] fs/ntfs3: add functions to modify LE bitmaps

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Message-ID: <202112080045.huYZOn4p-lkp@intel.com>
Date:   Wed, 8 Dec 2021 01:31:15 +0800
From:   kernel test robot <lkp@...el.com>
To:     Thomas Kühnel <thomas.kuehnel@....de>,
        Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
Cc:     kbuild-all@...ts.01.org, ntfs3@...ts.linux.dev,
        linux-kernel@...r.kernel.org,
        Thomas Kühnel <thomas.kuehnel@....de>,
        Nicolas Schier <n.schier@....de>
Subject: Re: [PATCH 2/3] fs/ntfs3: add functions to modify LE bitmaps

Hi "Thomas,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on 0fcfb00b28c0b7884635dacf38e46d60bf3d4eb1]

url:    https://github.com/0day-ci/linux/commits/Thomas-K-hnel/fs-ntfs3-Fixes-for-big-endian-systems/20211207-184206
base:   0fcfb00b28c0b7884635dacf38e46d60bf3d4eb1
config: arm64-randconfig-s031-20211207 (https://download.01.org/0day-ci/archive/20211208/202112080045.huYZOn4p-lkp@intel.com/config)
compiler: aarch64-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://github.com/0day-ci/linux/commit/2227622e39d3100d10077199481f05ccb9a17204
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Thomas-K-hnel/fs-ntfs3-Fixes-for-big-endian-systems/20211207-184206
        git checkout 2227622e39d3100d10077199481f05ccb9a17204
        # 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=arm64 SHELL=/bin/bash fs/ntfs3/

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 >>)
>> fs/ntfs3/bitmap.c:1498:37: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask_to_set @@     got restricted __le32 [usertype] @@
   fs/ntfs3/bitmap.c:1498:37: sparse:     expected unsigned long mask_to_set
   fs/ntfs3/bitmap.c:1498:37: sparse:     got restricted __le32 [usertype]
>> fs/ntfs3/bitmap.c:1508:29: sparse: sparse: invalid assignment: &=
>> fs/ntfs3/bitmap.c:1508:29: sparse:    left side has type unsigned long
>> fs/ntfs3/bitmap.c:1508:29: sparse:    right side has type restricted __le32
>> fs/ntfs3/bitmap.c:1518:39: sparse: sparse: incorrect type in initializer (different base types) @@     expected unsigned long mask_to_clear @@     got restricted __le32 [usertype] @@
   fs/ntfs3/bitmap.c:1518:39: sparse:     expected unsigned long mask_to_clear
   fs/ntfs3/bitmap.c:1518:39: sparse:     got restricted __le32 [usertype]
   fs/ntfs3/bitmap.c:1528:31: sparse: sparse: invalid assignment: &=
   fs/ntfs3/bitmap.c:1528:31: sparse:    left side has type unsigned long
   fs/ntfs3/bitmap.c:1528:31: sparse:    right side has type restricted __le32

vim +1498 fs/ntfs3/bitmap.c

  1492	
  1493	void ntfs_bitmap_set_le(unsigned long *map, unsigned int start, int len)
  1494	{
  1495		unsigned long *p = map + BIT_WORD(start);
  1496		const unsigned int size = start + len;
  1497		int bits_to_set = BITS_PER_LONG - (start % BITS_PER_LONG);
> 1498		unsigned long mask_to_set = cpu_to_le32(BITMAP_FIRST_WORD_MASK(start));
  1499	
  1500		while (len - bits_to_set >= 0) {
  1501			*p |= mask_to_set;
  1502			len -= bits_to_set;
  1503			bits_to_set = BITS_PER_LONG;
  1504			mask_to_set = ~0UL;
  1505			p++;
  1506		}
  1507		if (len) {
> 1508			mask_to_set &= cpu_to_le32(BITMAP_LAST_WORD_MASK(size));
  1509			*p |= mask_to_set;
  1510		}
  1511	}
  1512	
  1513	void ntfs_bitmap_clear_le(unsigned long *map, unsigned int start, int len)
  1514	{
  1515		unsigned long *p = map + BIT_WORD(start);
  1516		const unsigned int size = start + len;
  1517		int bits_to_clear = BITS_PER_LONG - (start % BITS_PER_LONG);
> 1518		unsigned long mask_to_clear = cpu_to_le32(BITMAP_FIRST_WORD_MASK(start));

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