Hi Michael,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
master
head:   b3298500b23f0b53a8d81e0d5ad98a29db71f4f0
commit: e02152ba2810f7c88cb54e71cda096268dfa9241 powerpc: Drop -me200 addition 
to build flags
date:   3 weeks ago
config: powerpc-randconfig-s032-20201206 (attached as .config)
compiler: powerpc-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: v0.6.3-179-ga00755aa-dirty
        # 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e02152ba2810f7c88cb54e71cda096268dfa9241
        git remote add linus 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout e02152ba2810f7c88cb54e71cda096268dfa9241
        # 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=powerpc 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <[email protected]>


"sparse warnings: (new ones prefixed by >>)"
>> arch/powerpc/crypto/sha256-spe-glue.c:186:16: sparse: sparse: incorrect type 
>> in assignment (different base types) @@     expected restricted __be32 
>> [usertype] @@     got unsigned int @@
   arch/powerpc/crypto/sha256-spe-glue.c:186:16: sparse:     expected 
restricted __be32 [usertype]
   arch/powerpc/crypto/sha256-spe-glue.c:186:16: sparse:     got unsigned int
   arch/powerpc/crypto/sha256-spe-glue.c:187:16: sparse: sparse: incorrect type 
in assignment (different base types) @@     expected restricted __be32 
[usertype] @@     got unsigned int @@
   arch/powerpc/crypto/sha256-spe-glue.c:187:16: sparse:     expected 
restricted __be32 [usertype]
   arch/powerpc/crypto/sha256-spe-glue.c:187:16: sparse:     got unsigned int
   arch/powerpc/crypto/sha256-spe-glue.c:188:16: sparse: sparse: incorrect type 
in assignment (different base types) @@     expected restricted __be32 
[usertype] @@     got unsigned int @@
   arch/powerpc/crypto/sha256-spe-glue.c:188:16: sparse:     expected 
restricted __be32 [usertype]
   arch/powerpc/crypto/sha256-spe-glue.c:188:16: sparse:     got unsigned int
   arch/powerpc/crypto/sha256-spe-glue.c:189:16: sparse: sparse: incorrect type 
in assignment (different base types) @@     expected restricted __be32 
[usertype] @@     got unsigned int @@
   arch/powerpc/crypto/sha256-spe-glue.c:189:16: sparse:     expected 
restricted __be32 [usertype]
   arch/powerpc/crypto/sha256-spe-glue.c:189:16: sparse:     got unsigned int
   arch/powerpc/crypto/sha256-spe-glue.c:190:16: sparse: sparse: incorrect type 
in assignment (different base types) @@     expected restricted __be32 
[usertype] @@     got unsigned int @@
   arch/powerpc/crypto/sha256-spe-glue.c:190:16: sparse:     expected 
restricted __be32 [usertype]
   arch/powerpc/crypto/sha256-spe-glue.c:190:16: sparse:     got unsigned int
   arch/powerpc/crypto/sha256-spe-glue.c:191:16: sparse: sparse: incorrect type 
in assignment (different base types) @@     expected restricted __be32 
[usertype] @@     got unsigned int @@
   arch/powerpc/crypto/sha256-spe-glue.c:191:16: sparse:     expected 
restricted __be32 [usertype]
   arch/powerpc/crypto/sha256-spe-glue.c:191:16: sparse:     got unsigned int
   arch/powerpc/crypto/sha256-spe-glue.c:192:16: sparse: sparse: incorrect type 
in assignment (different base types) @@     expected restricted __be32 
[usertype] @@     got unsigned int @@
   arch/powerpc/crypto/sha256-spe-glue.c:192:16: sparse:     expected 
restricted __be32 [usertype]
   arch/powerpc/crypto/sha256-spe-glue.c:192:16: sparse:     got unsigned int
--
>> arch/powerpc/math-emu/math_efp.c:927:1: sparse: sparse: 'module_init()' has 
>> implicit return type
>> arch/powerpc/math-emu/math_efp.c:889:12: sparse: sparse: symbol 
>> 'spe_mathemu_init' was not declared. Should it be static?
--
   arch/powerpc/mm/nohash/fsl_booke.c:61:3: sparse: sparse: symbol 
'tlbcam_addrs' was not declared. Should it be static?
   arch/powerpc/mm/nohash/fsl_booke.c:63:15: sparse: sparse: symbol 'tlbcam_sz' 
was not declared. Should it be static?
>> arch/powerpc/mm/nohash/fsl_booke.c:256:30: sparse: sparse: Using plain 
>> integer as NULL pointer

vim +186 arch/powerpc/crypto/sha256-spe-glue.c

c147028ccc24968 arch/powerpc/crypto/sha256_spe_glue.c Markus Stockhausen 
2015-01-30  177  
c147028ccc24968 arch/powerpc/crypto/sha256_spe_glue.c Markus Stockhausen 
2015-01-30  178  static int ppc_spe_sha224_final(struct shash_desc *desc, u8 
*out)
c147028ccc24968 arch/powerpc/crypto/sha256_spe_glue.c Markus Stockhausen 
2015-01-30  179  {
c147028ccc24968 arch/powerpc/crypto/sha256_spe_glue.c Markus Stockhausen 
2015-01-30  180        u32 D[SHA256_DIGEST_SIZE >> 2];
c147028ccc24968 arch/powerpc/crypto/sha256_spe_glue.c Markus Stockhausen 
2015-01-30  181        __be32 *dst = (__be32 *)out;
c147028ccc24968 arch/powerpc/crypto/sha256_spe_glue.c Markus Stockhausen 
2015-01-30  182  
c147028ccc24968 arch/powerpc/crypto/sha256_spe_glue.c Markus Stockhausen 
2015-01-30  183        ppc_spe_sha256_final(desc, (u8 *)D);
c147028ccc24968 arch/powerpc/crypto/sha256_spe_glue.c Markus Stockhausen 
2015-01-30  184  
c147028ccc24968 arch/powerpc/crypto/sha256_spe_glue.c Markus Stockhausen 
2015-01-30  185        /* avoid bytewise memcpy */
c147028ccc24968 arch/powerpc/crypto/sha256_spe_glue.c Markus Stockhausen 
2015-01-30 @186        dst[0] = D[0];
c147028ccc24968 arch/powerpc/crypto/sha256_spe_glue.c Markus Stockhausen 
2015-01-30  187        dst[1] = D[1];
c147028ccc24968 arch/powerpc/crypto/sha256_spe_glue.c Markus Stockhausen 
2015-01-30  188        dst[2] = D[2];
c147028ccc24968 arch/powerpc/crypto/sha256_spe_glue.c Markus Stockhausen 
2015-01-30  189        dst[3] = D[3];
c147028ccc24968 arch/powerpc/crypto/sha256_spe_glue.c Markus Stockhausen 
2015-01-30  190        dst[4] = D[4];
c147028ccc24968 arch/powerpc/crypto/sha256_spe_glue.c Markus Stockhausen 
2015-01-30  191        dst[5] = D[5];
c147028ccc24968 arch/powerpc/crypto/sha256_spe_glue.c Markus Stockhausen 
2015-01-30  192        dst[6] = D[6];
c147028ccc24968 arch/powerpc/crypto/sha256_spe_glue.c Markus Stockhausen 
2015-01-30  193  
c147028ccc24968 arch/powerpc/crypto/sha256_spe_glue.c Markus Stockhausen 
2015-01-30  194        /* clear sensitive data */
c147028ccc24968 arch/powerpc/crypto/sha256_spe_glue.c Markus Stockhausen 
2015-01-30  195        memzero_explicit(D, SHA256_DIGEST_SIZE);
c147028ccc24968 arch/powerpc/crypto/sha256_spe_glue.c Markus Stockhausen 
2015-01-30  196        return 0;
c147028ccc24968 arch/powerpc/crypto/sha256_spe_glue.c Markus Stockhausen 
2015-01-30  197  }
c147028ccc24968 arch/powerpc/crypto/sha256_spe_glue.c Markus Stockhausen 
2015-01-30  198  

:::::: The code at line 186 was first introduced by commit
:::::: c147028ccc249681ef1129fb4b09f71fe6b75715 crypto: ppc/sha256 - glue

:::::: TO: Markus Stockhausen <[email protected]>
:::::: CC: Herbert Xu <[email protected]>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/[email protected]

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