Re: [RFC PATCH bpf-next 03/13] bpf: Implement bpf namespace

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

Hi Yafang,

[FYI, it's a private test report for your RFC patch.]
[auto build test WARNING on bpf-next/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Yafang-Shao/fork-New-clone3-flag-for-BPF-namespace/20230326-172511
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
patch link:    https://lore.kernel.org/r/20230326092208.13613-4-laoar.shao%40gmail.com
patch subject: [RFC PATCH bpf-next 03/13] bpf: Implement bpf namespace
config: i386-randconfig-a013 (https://download.01.org/0day-ci/archive/20230326/202303261916.LSvC0MJb-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
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://github.com/intel-lab-lkp/linux/commit/97c1724462aa56ab051d35da4a23086e98466e40
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Yafang-Shao/fork-New-clone3-flag-for-BPF-namespace/20230326-172511
        git checkout 97c1724462aa56ab051d35da4a23086e98466e40
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash kernel/bpf/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303261916.LSvC0MJb-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> kernel/bpf/bpf_namespace.c:29:10: warning: implicit conversion from 'unsigned long long' to 'long' changes value from 17179869184 to 0 [-Wconstant-conversion]
           .type = CLONE_NEWBPF,
                   ^~~~~~~~~~~~
   include/uapi/linux/sched.h:39:23: note: expanded from macro 'CLONE_NEWBPF'
   #define CLONE_NEWBPF            0x400000000ULL /* New BPF namespace */
                                   ^~~~~~~~~~~~~~
   1 warning generated.


vim +29 kernel/bpf/bpf_namespace.c

    26	
    27	struct proc_ns_operations bpfns_operations = {
    28		.name = "bpf",
  > 29		.type = CLONE_NEWBPF,
    30		.get  = bpfns_get,
    31		.put  = bpfns_put,
    32		.install = bpfns_install,
    33	};
    34	

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