Hi Andrii, kernel test robot noticed the following build errors: [auto build test ERROR on bpf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Andrii-Nakryiko/bpf-add-BPF-token-delegation-mount-options-to-BPF-FS/20230913-053240 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20230912212906.3975866-7-andrii%40kernel.org patch subject: [PATCH v4 bpf-next 06/12] bpf: take into account BPF token when fetching helper protos config: um-allyesconfig (https://download.01.org/0day-ci/archive/20230913/202309131744.fLl0eeCO-lkp@xxxxxxxxx/config) compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project.git f28c006a5895fc0e329fe15fead81e37457cb1d1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230913/202309131744.fLl0eeCO-lkp@xxxxxxxxx/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 <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202309131744.fLl0eeCO-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from net/core/filter.c:21: In file included from include/linux/bpf_verifier.h:7: In file included from include/linux/bpf.h:31: In file included from include/linux/memcontrol.h:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) ^ In file included from net/core/filter.c:21: In file included from include/linux/bpf_verifier.h:7: In file included from include/linux/bpf.h:31: In file included from include/linux/memcontrol.h:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) ^ In file included from net/core/filter.c:21: In file included from include/linux/bpf_verifier.h:7: In file included from include/linux/bpf.h:31: In file included from include/linux/memcontrol.h:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:692:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:700:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:708:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:717:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:726:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ >> net/core/filter.c:11721:7: error: implicit declaration of function 'bpf_token_capable' is invalid in C99 [-Werror,-Wimplicit-function-declaration] if (!bpf_token_capable(prog->aux->token, CAP_PERFMON)) ^ 12 warnings and 1 error generated. vim +/bpf_token_capable +11721 net/core/filter.c 11687 11688 static const struct bpf_func_proto * 11689 bpf_sk_base_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) 11690 { 11691 const struct bpf_func_proto *func; 11692 11693 switch (func_id) { 11694 case BPF_FUNC_skc_to_tcp6_sock: 11695 func = &bpf_skc_to_tcp6_sock_proto; 11696 break; 11697 case BPF_FUNC_skc_to_tcp_sock: 11698 func = &bpf_skc_to_tcp_sock_proto; 11699 break; 11700 case BPF_FUNC_skc_to_tcp_timewait_sock: 11701 func = &bpf_skc_to_tcp_timewait_sock_proto; 11702 break; 11703 case BPF_FUNC_skc_to_tcp_request_sock: 11704 func = &bpf_skc_to_tcp_request_sock_proto; 11705 break; 11706 case BPF_FUNC_skc_to_udp6_sock: 11707 func = &bpf_skc_to_udp6_sock_proto; 11708 break; 11709 case BPF_FUNC_skc_to_unix_sock: 11710 func = &bpf_skc_to_unix_sock_proto; 11711 break; 11712 case BPF_FUNC_skc_to_mptcp_sock: 11713 func = &bpf_skc_to_mptcp_sock_proto; 11714 break; 11715 case BPF_FUNC_ktime_get_coarse_ns: 11716 return &bpf_ktime_get_coarse_ns_proto; 11717 default: 11718 return bpf_base_func_proto(func_id, prog); 11719 } 11720 11721 if (!bpf_token_capable(prog->aux->token, CAP_PERFMON)) 11722 return NULL; 11723 11724 return func; 11725 } 11726 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
