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+0000 Date: Mon, 4 Mar 2024 02:28:25 +0800 From: kernel test robot Cc: oe-kbuild-all@lists.linux.dev, llvm@lists.linux.dev Subject: kernel/bpf/task_iter.c:707:27: warning: bitwise operation between different enumeration types ('enum bpf_reg_type' and 'enum bpf_type_flag') Message-ID: <202403040231.n13KHvQU-lkp@intel.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline CC: linux-kernel@vger.kernel.org TO: Chuyi Zhou CC: Martin KaFai Lau tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 04b8076df2534f08bb4190f90a24e0f7f8930aca commit: 0de4f50de25af79c2a46db55d70cdbd8f985c6d1 bpf: Let verifier consider {task,cgroup} is trusted in bpf_iter_reg date: 4 months ago config: riscv-defconfig (https://download.01.org/0day-ci/archive/20240304/202403040231.n13KHvQU-lkp@intel.com/config) compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project edd4aee4dd9b5b98b2576a6f783e4086173d902a) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240304/202403040231.n13KHvQU-lkp@intel.com/reproduce) 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 | Closes: https://lore.kernel.org/oe-kbuild-all/202403040231.n13KHvQU-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from kernel/bpf/task_iter.c:6: In file included from include/linux/pid_namespace.h:7: In file included from include/linux/mm.h:2166: include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ In file included from kernel/bpf/task_iter.c:9: In file included from include/linux/filter.h:9: include/linux/bpf.h:726:48: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_arg_type') [-Wenum-enum-conversion] 726 | ARG_PTR_TO_MAP_VALUE_OR_NULL = PTR_MAYBE_NULL | ARG_PTR_TO_MAP_VALUE, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~ include/linux/bpf.h:727:43: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_arg_type') [-Wenum-enum-conversion] 727 | ARG_PTR_TO_MEM_OR_NULL = PTR_MAYBE_NULL | ARG_PTR_TO_MEM, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~ include/linux/bpf.h:728:43: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_arg_type') [-Wenum-enum-conversion] 728 | ARG_PTR_TO_CTX_OR_NULL = PTR_MAYBE_NULL | ARG_PTR_TO_CTX, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~ include/linux/bpf.h:729:45: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_arg_type') [-Wenum-enum-conversion] 729 | ARG_PTR_TO_SOCKET_OR_NULL = PTR_MAYBE_NULL | ARG_PTR_TO_SOCKET, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~ include/linux/bpf.h:730:44: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_arg_type') [-Wenum-enum-conversion] 730 | ARG_PTR_TO_STACK_OR_NULL = PTR_MAYBE_NULL | ARG_PTR_TO_STACK, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~ include/linux/bpf.h:731:45: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_arg_type') [-Wenum-enum-conversion] 731 | ARG_PTR_TO_BTF_ID_OR_NULL = PTR_MAYBE_NULL | ARG_PTR_TO_BTF_ID, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~ include/linux/bpf.h:735:38: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_arg_type') [-Wenum-enum-conversion] 735 | ARG_PTR_TO_UNINIT_MEM = MEM_UNINIT | ARG_PTR_TO_MEM, | ~~~~~~~~~~ ^ ~~~~~~~~~~~~~~ include/linux/bpf.h:737:45: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_arg_type') [-Wenum-enum-conversion] 737 | ARG_PTR_TO_FIXED_SIZE_MEM = MEM_FIXED_SIZE | ARG_PTR_TO_MEM, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~ include/linux/bpf.h:760:48: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_return_type') [-Wenum-enum-conversion] 760 | RET_PTR_TO_MAP_VALUE_OR_NULL = PTR_MAYBE_NULL | RET_PTR_TO_MAP_VALUE, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~ include/linux/bpf.h:761:45: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_return_type') [-Wenum-enum-conversion] 761 | RET_PTR_TO_SOCKET_OR_NULL = PTR_MAYBE_NULL | RET_PTR_TO_SOCKET, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~ include/linux/bpf.h:762:47: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_return_type') [-Wenum-enum-conversion] 762 | RET_PTR_TO_TCP_SOCK_OR_NULL = PTR_MAYBE_NULL | RET_PTR_TO_TCP_SOCK, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~ include/linux/bpf.h:763:50: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_return_type') [-Wenum-enum-conversion] 763 | RET_PTR_TO_SOCK_COMMON_OR_NULL = PTR_MAYBE_NULL | RET_PTR_TO_SOCK_COMMON, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~ include/linux/bpf.h:765:49: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_return_type') [-Wenum-enum-conversion] 765 | RET_PTR_TO_DYNPTR_MEM_OR_NULL = PTR_MAYBE_NULL | RET_PTR_TO_MEM, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~ include/linux/bpf.h:766:45: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_return_type') [-Wenum-enum-conversion] 766 | RET_PTR_TO_BTF_ID_OR_NULL = PTR_MAYBE_NULL | RET_PTR_TO_BTF_ID, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~ include/linux/bpf.h:767:43: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_return_type') [-Wenum-enum-conversion] 767 | RET_PTR_TO_BTF_ID_TRUSTED = PTR_TRUSTED | RET_PTR_TO_BTF_ID, | ~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~ include/linux/bpf.h:878:44: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_reg_type') [-Wenum-enum-conversion] 878 | PTR_TO_MAP_VALUE_OR_NULL = PTR_MAYBE_NULL | PTR_TO_MAP_VALUE, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~ include/linux/bpf.h:879:42: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_reg_type') [-Wenum-enum-conversion] 879 | PTR_TO_SOCKET_OR_NULL = PTR_MAYBE_NULL | PTR_TO_SOCKET, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~ include/linux/bpf.h:880:46: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_reg_type') [-Wenum-enum-conversion] 880 | PTR_TO_SOCK_COMMON_OR_NULL = PTR_MAYBE_NULL | PTR_TO_SOCK_COMMON, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~ include/linux/bpf.h:881:44: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_reg_type') [-Wenum-enum-conversion] 881 | PTR_TO_TCP_SOCK_OR_NULL = PTR_MAYBE_NULL | PTR_TO_TCP_SOCK, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~ include/linux/bpf.h:882:42: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_reg_type') [-Wenum-enum-conversion] 882 | PTR_TO_BTF_ID_OR_NULL = PTR_MAYBE_NULL | PTR_TO_BTF_ID, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~ >> kernel/bpf/task_iter.c:707:27: warning: bitwise operation between different enumeration types ('enum bpf_reg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion] 707 | PTR_TO_BTF_ID_OR_NULL | PTR_TRUSTED }, | ~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~ 22 warnings generated. -- In file included from kernel/bpf/cgroup_iter.c:3: In file included from include/linux/bpf.h:21: In file included from include/linux/kallsyms.h:13: In file included from include/linux/mm.h:2166: include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ In file included from kernel/bpf/cgroup_iter.c:3: include/linux/bpf.h:726:48: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_arg_type') [-Wenum-enum-conversion] 726 | ARG_PTR_TO_MAP_VALUE_OR_NULL = PTR_MAYBE_NULL | ARG_PTR_TO_MAP_VALUE, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~ include/linux/bpf.h:727:43: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_arg_type') [-Wenum-enum-conversion] 727 | ARG_PTR_TO_MEM_OR_NULL = PTR_MAYBE_NULL | ARG_PTR_TO_MEM, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~ include/linux/bpf.h:728:43: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_arg_type') [-Wenum-enum-conversion] 728 | ARG_PTR_TO_CTX_OR_NULL = PTR_MAYBE_NULL | ARG_PTR_TO_CTX, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~ include/linux/bpf.h:729:45: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_arg_type') [-Wenum-enum-conversion] 729 | ARG_PTR_TO_SOCKET_OR_NULL = PTR_MAYBE_NULL | ARG_PTR_TO_SOCKET, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~ include/linux/bpf.h:730:44: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_arg_type') [-Wenum-enum-conversion] 730 | ARG_PTR_TO_STACK_OR_NULL = PTR_MAYBE_NULL | ARG_PTR_TO_STACK, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~ include/linux/bpf.h:731:45: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_arg_type') [-Wenum-enum-conversion] 731 | ARG_PTR_TO_BTF_ID_OR_NULL = PTR_MAYBE_NULL | ARG_PTR_TO_BTF_ID, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~ include/linux/bpf.h:735:38: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_arg_type') [-Wenum-enum-conversion] 735 | ARG_PTR_TO_UNINIT_MEM = MEM_UNINIT | ARG_PTR_TO_MEM, | ~~~~~~~~~~ ^ ~~~~~~~~~~~~~~ include/linux/bpf.h:737:45: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_arg_type') [-Wenum-enum-conversion] 737 | ARG_PTR_TO_FIXED_SIZE_MEM = MEM_FIXED_SIZE | ARG_PTR_TO_MEM, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~ include/linux/bpf.h:760:48: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_return_type') [-Wenum-enum-conversion] 760 | RET_PTR_TO_MAP_VALUE_OR_NULL = PTR_MAYBE_NULL | RET_PTR_TO_MAP_VALUE, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~ include/linux/bpf.h:761:45: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_return_type') [-Wenum-enum-conversion] 761 | RET_PTR_TO_SOCKET_OR_NULL = PTR_MAYBE_NULL | RET_PTR_TO_SOCKET, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~ include/linux/bpf.h:762:47: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_return_type') [-Wenum-enum-conversion] 762 | RET_PTR_TO_TCP_SOCK_OR_NULL = PTR_MAYBE_NULL | RET_PTR_TO_TCP_SOCK, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~ include/linux/bpf.h:763:50: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_return_type') [-Wenum-enum-conversion] 763 | RET_PTR_TO_SOCK_COMMON_OR_NULL = PTR_MAYBE_NULL | RET_PTR_TO_SOCK_COMMON, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~ include/linux/bpf.h:765:49: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_return_type') [-Wenum-enum-conversion] 765 | RET_PTR_TO_DYNPTR_MEM_OR_NULL = PTR_MAYBE_NULL | RET_PTR_TO_MEM, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~ include/linux/bpf.h:766:45: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_return_type') [-Wenum-enum-conversion] 766 | RET_PTR_TO_BTF_ID_OR_NULL = PTR_MAYBE_NULL | RET_PTR_TO_BTF_ID, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~ include/linux/bpf.h:767:43: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_return_type') [-Wenum-enum-conversion] 767 | RET_PTR_TO_BTF_ID_TRUSTED = PTR_TRUSTED | RET_PTR_TO_BTF_ID, | ~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~ include/linux/bpf.h:878:44: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_reg_type') [-Wenum-enum-conversion] 878 | PTR_TO_MAP_VALUE_OR_NULL = PTR_MAYBE_NULL | PTR_TO_MAP_VALUE, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~ include/linux/bpf.h:879:42: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_reg_type') [-Wenum-enum-conversion] 879 | PTR_TO_SOCKET_OR_NULL = PTR_MAYBE_NULL | PTR_TO_SOCKET, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~ include/linux/bpf.h:880:46: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_reg_type') [-Wenum-enum-conversion] 880 | PTR_TO_SOCK_COMMON_OR_NULL = PTR_MAYBE_NULL | PTR_TO_SOCK_COMMON, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~ include/linux/bpf.h:881:44: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_reg_type') [-Wenum-enum-conversion] 881 | PTR_TO_TCP_SOCK_OR_NULL = PTR_MAYBE_NULL | PTR_TO_TCP_SOCK, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~ include/linux/bpf.h:882:42: warning: bitwise operation between different enumeration types ('enum bpf_type_flag' and 'enum bpf_reg_type') [-Wenum-enum-conversion] 882 | PTR_TO_BTF_ID_OR_NULL = PTR_MAYBE_NULL | PTR_TO_BTF_ID, | ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~ >> kernel/bpf/cgroup_iter.c:285:27: warning: bitwise operation between different enumeration types ('enum bpf_reg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion] 285 | PTR_TO_BTF_ID_OR_NULL | PTR_TRUSTED }, | ~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~ 22 warnings generated. vim +707 kernel/bpf/task_iter.c 699 700 static struct bpf_iter_reg task_reg_info = { 701 .target = "task", 702 .attach_target = bpf_iter_attach_task, 703 .feature = BPF_ITER_RESCHED, 704 .ctx_arg_info_size = 1, 705 .ctx_arg_info = { 706 { offsetof(struct bpf_iter__task, task), > 707 PTR_TO_BTF_ID_OR_NULL | PTR_TRUSTED }, 708 }, 709 .seq_info = &task_seq_info, 710 .fill_link_info = bpf_iter_fill_link_info, 711 .show_fdinfo = bpf_iter_task_show_fdinfo, 712 }; 713 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki