tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   dfd71d381f7e1aa118e0368774aa05f5c4a48870
commit: 82fef0ad811fb5976cf36ccc3d2c3bc0195dfb72 [3972/6402] x86/mm: unencrypted non-blocking DMA allocations use coherent pools
config: x86_64-randconfig-d001-20200502 (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 45b7d44ecb01780e26dc8d3c30bc34e32c08dd70)
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        git checkout 82fef0ad811fb5976cf36ccc3d2c3bc0195dfb72
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> kernel/dma/pool.o: warning: objtool: __llvm_gcov_writeout()+0x14: call without frame pointer save/setup
>> kernel/dma/pool.o: warning: objtool: __llvm_gcov_flush()+0x0: call without frame pointer save/setup
--
>> kernel/dma/remap.o: warning: objtool: __llvm_gcov_writeout()+0x14: call without frame pointer save/setup
>> kernel/dma/remap.o: warning: objtool: __llvm_gcov_flush()+0x0: call without frame pointer save/setup

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0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org