linux-kernel - [jlayton:ceph-sparse-read 14/15] net/ceph/osd_client.c:5848:28: sparse: sparse: cast to restricted _

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Date:   Sun, 20 Mar 2022 00:50:58 +0800
From:   kernel test robot <lkp@...el.com>
To:     Jeff Layton <jlayton@...nel.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [jlayton:ceph-sparse-read 14/15] net/ceph/osd_client.c:5848:28:
 sparse: sparse: cast to restricted __le64

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux.git ceph-sparse-read
head:   24b6ede729dbd3c2675c762b74efb51eaa450576
commit: 26663dc52a5f3f90709beab073943d5d542c14fe [14/15] libceph: add sparse read support to OSD client
config: powerpc64-randconfig-s031-20220319 (https://download.01.org/0day-ci/archive/20220320/202203200056.t5z11wVh-lkp@intel.com/config)
compiler: powerpc64-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/jlayton/linux.git/commit/?id=26663dc52a5f3f90709beab073943d5d542c14fe
        git remote add jlayton https://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux.git
        git fetch --no-tags jlayton ceph-sparse-read
        git checkout 26663dc52a5f3f90709beab073943d5d542c14fe
        # 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=powerpc SHELL=/bin/bash net/ceph/

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 >>)
>> net/ceph/osd_client.c:5848:28: sparse: sparse: cast to restricted __le64
>> net/ceph/osd_client.c:5848:28: sparse: sparse: cast from restricted __le32
   net/ceph/osd_client.c:5849:28: sparse: sparse: cast to restricted __le64
   net/ceph/osd_client.c:5849:28: sparse: sparse: cast from restricted __le32

vim +5848 net/ceph/osd_client.c

  5839	
  5840	#ifdef __BIG_ENDIAN
  5841	static inline void convert_extent_map(struct ceph_sparse_read *sr)
  5842	{
  5843		int i;
  5844	
  5845		for (i = 0; i < sr->sr_count; i++) {
  5846			struct ceph_sparse_extent *ext = &sr->sr_extent[i];
  5847	
> 5848			ext->off = le64_to_cpu((__force __le32)ext->off);
  5849			ext->len = le64_to_cpu((__force __le32)ext->len);
  5850		}
  5851	}
  5852	#else
  5853	static inline void convert_extent_map(struct ceph_sparse_read *sr)
  5854	{
  5855	}
  5856	#endif
  5857	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp