CC: Linux Memory Management List <linux-mm(a)kvack.org&gt; TO: Gao Xiang <hsiangkao(a)linux.alibaba.com&gt; CC: "Darrick J. Wong" <djwong(a)kernel.org&gt; CC: Christoph Hellwig <hch(a)lst.de&gt; CC: "Matthew Wilcox (Oracle)" <willy(a)infradead.org&gt; CC: Andreas Gruenbacher <agruenba(a)redhat.com&gt; Hi Gao, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: f26c3abc432a2026ba9ee7767061a1f88aead6ec commit: 69f4a26c1e0c7c5e5e77c5bd7b271743c124c545 [4490/8804] iomap: support reading inline data from non-zero pos config: x86_64-randconfig-a016-20210818 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project d2b574a4dea5b718e4386bf2e26af0126e5978ce) reproduce (this is a W=1 build): 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/commi... 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 69f4a26c1e0c7c5e5e77c5bd7b271743c124c545 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=x86_64 SHELL=/bin/bash fs/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org