[linux-next:master 2196/3956] arch/riscv/kernel/probes/decode-insn.c:19:31: sparse: sparse: cast to restricted __le32

[linux-next:master 2196/3956] arch/riscv/kernel/probes/decode-insn.c:19:31: sparse: sparse: cast to restricted __le32

[kernel test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   b3a3cbdec55b090d22a09f75efb7c7d34cb97f25
commit: ee61fd55dbcecb65f7abcf012b342e60c44c92a5 [2196/3956] riscv: Add kprobes supported
config: riscv-randconfig-s032-20210115 (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: v0.6.3-208-g46a52ca4-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=ee61fd55dbcecb65f7abcf012b342e60c44c92a5
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout ee61fd55dbcecb65f7abcf012b342e60c44c92a5
        # 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=riscv 

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


"sparse warnings: (new ones prefixed by >>)"
>> arch/riscv/kernel/probes/decode-insn.c:19:31: sparse: sparse: cast to restricted __le32
--
>> arch/riscv/kernel/probes/kprobes.c:60:21: sparse: sparse: cast to restricted __le32

vim +19 arch/riscv/kernel/probes/decode-insn.c

    11	
    12	/* Return:
    13	 *   INSN_REJECTED     If instruction is one not allowed to kprobe,
    14	 *   INSN_GOOD_NO_SLOT If instruction is supported but doesn't use its slot.
    15	 */
    16	enum probe_insn __kprobes
    17	riscv_probe_decode_insn(probe_opcode_t *addr, struct arch_probe_insn *api)
    18	{
  > 19		probe_opcode_t insn = le32_to_cpu(*addr);

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

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