[csky-linux:linux-next-riscv-optprobe 5/8] arch/riscv/kernel/probes/decode-insn.c:19:31: sparse: sparse: cast to restricted __le32

[csky-linux:linux-next-riscv-optprobe 5/8] arch/riscv/kernel/probes/decode-insn.c:19:31: sparse: sparse: cast to restricted __le32

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 2195 bytes --]

Hi Guo,

First bad commit (maybe != root cause):

tree:   https://github.com/c-sky/csky-linux linux-next-riscv-optprobe
head:   db7e958a1860da6c865994602526cedf0368e4e5
commit: 332f9b6ac7dc75c6eb21e5b01f0b0ba0a9950fe1 [5/8] riscv: Add uprobes supported
config: riscv-randconfig-s032-20200731 (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: v0.6.2-115-g5fc204f2-dirty
        git checkout 332f9b6ac7dc75c6eb21e5b01f0b0ba0a9950fe1
        # 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

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

6c46ab88f7a6c29 Guo Ren 2020-06-30  11  
6c46ab88f7a6c29 Guo Ren 2020-06-30  12  /* Return:
6c46ab88f7a6c29 Guo Ren 2020-06-30  13   *   INSN_REJECTED     If instruction is one not allowed to kprobe,
6c46ab88f7a6c29 Guo Ren 2020-06-30  14   *   INSN_GOOD_NO_SLOT If instruction is supported but doesn't use its slot.
6c46ab88f7a6c29 Guo Ren 2020-06-30  15   */
6c46ab88f7a6c29 Guo Ren 2020-06-30  16  enum probe_insn __kprobes
6c46ab88f7a6c29 Guo Ren 2020-06-30  17  riscv_probe_decode_insn(probe_opcode_t *addr, struct arch_probe_insn *api)
6c46ab88f7a6c29 Guo Ren 2020-06-30  18  {
6c46ab88f7a6c29 Guo Ren 2020-06-30 @19  	probe_opcode_t insn = le32_to_cpu(*addr);

:::::: The code at line 19 was first introduced by commit
:::::: 6c46ab88f7a6c29fa61fa951ee8392fd9e857307 riscv: Add kprobes supported

:::::: TO: Guo Ren <guoren@linux.alibaba.com>
:::::: CC: Guo Ren <guoren@linux.alibaba.com>

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

[-- Attachment #2: config.gz --]
[-- Type: application/gzip, Size: 28843 bytes --]