[linux-next:master 4217/8413] lib/kunit/executor_test.c:138:4: warning: cast from 'void (*)(const void *)' to 'kunit_action_t *' (aka 'void (*)(void *)') converts to incompatible function type

[kernel test robot <lkp@xxxxxxxxx>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   53ab6975c12d1ad86c599a8927e8c698b144d669
commit: 00e63f8afcfc6bf93d75141c51d35e8a40e86363 [4217/8413] kunit: executor_test: Use kunit_add_action()
config: hexagon-randconfig-r045-20230612 (https://download.01.org/0day-ci/archive/20230612/202306122325.N7YrihQV-lkp@xxxxxxxxx/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce (this is a W=1 build):
        mkdir -p ~/bin
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=00e63f8afcfc6bf93d75141c51d35e8a40e86363
        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 00e63f8afcfc6bf93d75141c51d35e8a40e86363
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=hexagon olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash lib/

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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202306122325.N7YrihQV-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

   In file included from lib/kunit/executor.c:223:
>> lib/kunit/executor_test.c:138:4: warning: cast from 'void (*)(const void *)' to 'kunit_action_t *' (aka 'void (*)(void *)') converts to incompatible function type [-Wcast-function-type-strict]
     138 |                         (kunit_action_t *)kfree,
         |                         ^~~~~~~~~~~~~~~~~~~~~~~
   1 warning generated.


vim +138 lib/kunit/executor_test.c

   127	
   128	/* Use the resource API to register a call to kfree(to_free).
   129	 * Since we never actually use the resource, it's safe to use on const data.
   130	 */
   131	static void kfree_at_end(struct kunit *test, const void *to_free)
   132	{
   133		/* kfree() handles NULL already, but avoid allocating a no-op cleanup. */
   134		if (IS_ERR_OR_NULL(to_free))
   135			return;
   136	
   137		kunit_add_action(test,
 > 138				(kunit_action_t *)kfree,
   139				(void *)to_free);
   140	}
   141	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki