tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: ffc1b506e4066379411520003b9c59e509b05252 commit: 8b9ea9010139596e71aae4be5264c3dd901b13cb [13169/23490] pagecache: support percpu refcount to imporve performance config: x86_64-buildonly-randconfig-001-20240812 (https://download.01.org/0day-ci/archive/20240813/202408132002.WTqihNUY-lkp@i...) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240813/202408132002.WTqihNUY-lkp@i...)

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/202408132002.WTqihNUY-lkp@intel.com/

All warnings (new ones prefixed by >>):

In file included from fs/pipe.c:21: include/linux/pagemap.h:425:21: warning: cast from 'int (*)(struct file *, struct page *)' to 'filler_t *' (aka 'int (*)(void *, struct page *)') converts to incompatible function type [-Wcast-function-type-strict] 425 | filler_t *filler = (filler_t *)mapping->a_ops->readpage; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 warning generated.

...

fs/pipe.o: warning: objtool: generic_pipe_buf_get()+0xc0: unreachable instruction