Re: [PATCH v2 1/1] lib/crypto: tests: Add KUnit tests for AES

[kernel test robot <lkp@intel.com>]

Hi Holger,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 47753e09a15d9fd7cdf114550510f4f2af9333ec]

url:    https://github.com/intel-lab-lkp/linux/commits/Holger-Dengler/lib-crypto-tests-Add-KUnit-tests-for-AES/20260119-201615
base:   47753e09a15d9fd7cdf114550510f4f2af9333ec
patch link:    https://lore.kernel.org/r/20260119121210.2662-2-dengler%40linux.ibm.com
patch subject: [PATCH v2 1/1] lib/crypto: tests: Add KUnit tests for AES
config: xtensa-randconfig-r133-20260120 (https://download.01.org/0day-ci/archive/20260120/202601200403.mo4FMAVa-lkp@intel.com/config)
compiler: xtensa-linux-gcc (GCC) 10.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260120/202601200403.mo4FMAVa-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202601200403.mo4FMAVa-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   lib/crypto/tests/aes_kunit.c: note: in included file (through arch/xtensa/include/asm/atomic.h, include/linux/atomic.h, include/linux/jump_label.h, ...):
   arch/xtensa/include/asm/processor.h:105:2: sparse: sparse: Unsupported xtensa ABI
   arch/xtensa/include/asm/processor.h:135:2: sparse: sparse: Unsupported Xtensa ABI
   lib/crypto/tests/aes_kunit.c:149:1: sparse: sparse: bad integer constant expression
   lib/crypto/tests/aes_kunit.c:149:1: sparse: sparse: static assertion failed: "MODULE_INFO(description, ...) contains embedded NUL byte"
   lib/crypto/tests/aes_kunit.c:150:1: sparse: sparse: bad integer constant expression
   lib/crypto/tests/aes_kunit.c:150:1: sparse: sparse: static assertion failed: "MODULE_INFO(file, ...) contains embedded NUL byte"
   lib/crypto/tests/aes_kunit.c:150:1: sparse: sparse: bad integer constant expression
   lib/crypto/tests/aes_kunit.c:150:1: sparse: sparse: static assertion failed: "MODULE_INFO(license, ...) contains embedded NUL byte"
>> lib/crypto/tests/aes_kunit.c:35:26: sparse: sparse: incompatible types in conditional expression (incompatible argument 1 (different base types)):
   lib/crypto/tests/aes_kunit.c:35:26: sparse:    void ( * )( ... )
   lib/crypto/tests/aes_kunit.c:35:26: sparse:    void ( * )( ... )
>> lib/crypto/tests/aes_kunit.c:35:26: sparse: sparse: incompatible types in conditional expression (incompatible argument 1 (different base types)):
   lib/crypto/tests/aes_kunit.c:35:26: sparse:    void ( * )( ... )
   lib/crypto/tests/aes_kunit.c:35:26: sparse:    void ( * )( ... )

vim +35 lib/crypto/tests/aes_kunit.c

    28	
    29	static __always_inline u64 time_aes_op(bool encrypt, struct aes_key *aes_key,
    30					       u8 *out, const u8 *in)
    31	{
    32		void (*aes_op)(const struct aes_key *key, u8 *out, const u8 *in);
    33		u64 t;
    34	
  > 35		aes_op = encrypt ? &aes_encrypt : &aes_decrypt;
    36	
    37		preempt_disable();
    38		t = ktime_get_ns();
    39		aes_op(aes_key, out, in);
    40		t = ktime_get_ns() - t;
    41		preempt_enable();
    42	
    43		return t;
    44	}
    45	

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