../net/core/filter.c:1440:39: warning: incorrect type in argument 1 (different address spaces) ../net/core/filter.c:1440:39: expected struct sock_filter const *filter ../net/core/filter.c:1440:39: got struct sock_filter [noderef] __user *filter ../net/core/filter.c:1518:39: warning: incorrect type in argument 1 (different address spaces) ../net/core/filter.c:1518:39: expected struct sock_filter const *filter ../net/core/filter.c:1518:39: got struct sock_filter [noderef] __user *filter ../net/core/filter.c:2341:45: warning: incorrect type in argument 2 (different base types) ../net/core/filter.c:2341:45: expected restricted __be32 [usertype] daddr ../net/core/filter.c:2341:45: got unsigned int [usertype] ipv4_nh ../net/core/filter.c:3949:29: warning: symbol 'bpf_xdp_get_buff_len_trace_proto' was not declared. Should it be static? ../net/core/filter.c:4681:29: warning: symbol 'bpf_skb_output_proto' was not declared. Should it be static? ../net/core/filter.c:5095:29: warning: symbol 'bpf_xdp_output_proto' was not declared. Should it be static? ../net/core/filter.c:8032:29: warning: symbol 'bpf_sk_storage_get_cg_sock_proto' was not declared. Should it be static? ../net/core/filter.c:12008:17: warning: symbol 'bpf_dynptr_from_skb' was not declared. Should it be static? ../net/core/filter.c:12041:17: warning: symbol 'bpf_dynptr_from_skb_meta' was not declared. Should it be static? ../net/core/filter.c:12060:17: warning: symbol 'bpf_dynptr_from_xdp' was not declared. Should it be static? ../net/core/filter.c:12076:17: warning: symbol 'bpf_sock_addr_set_sun_path' was not declared. Should it be static? ../net/core/filter.c:12097:17: warning: symbol 'bpf_sk_assign_tcp_reqsk' was not declared. Should it be static? ../net/core/filter.c:12194:17: warning: symbol 'bpf_sock_ops_enable_tx_tstamp' was not declared. Should it be static? ../net/core/filter.c:12327:17: warning: symbol 'bpf_sock_destroy' was not declared. Should it be static? ../net/core/filter.c:1948:43: warning: incorrect type in argument 2 (different base types) ../net/core/filter.c:1948:43: expected restricted __wsum [usertype] diff ../net/core/filter.c:1948:43: got unsigned long long [usertype] to ../net/core/filter.c:1951:36: warning: incorrect type in argument 2 (different base types) ../net/core/filter.c:1951:36: expected restricted __be16 [usertype] old ../net/core/filter.c:1951:36: got unsigned long long [usertype] from ../net/core/filter.c:1951:42: warning: incorrect type in argument 3 (different base types) ../net/core/filter.c:1951:42: expected restricted __be16 [usertype] new ../net/core/filter.c:1951:42: got unsigned long long [usertype] to ../net/core/filter.c:1954:36: warning: incorrect type in argument 2 (different base types) ../net/core/filter.c:1954:36: expected restricted __be32 [usertype] from ../net/core/filter.c:1954:36: got unsigned long long [usertype] from ../net/core/filter.c:1954:42: warning: incorrect type in argument 3 (different base types) ../net/core/filter.c:1954:42: expected restricted __be32 [usertype] to ../net/core/filter.c:1954:42: got unsigned long long [usertype] to ../net/core/filter.c:2000:59: warning: incorrect type in argument 3 (different base types) ../net/core/filter.c:2000:59: expected restricted __wsum [usertype] diff ../net/core/filter.c:2000:59: got unsigned long long [usertype] to ../net/core/filter.c:2003:52: warning: incorrect type in argument 3 (different base types) ../net/core/filter.c:2003:52: expected restricted __be16 [usertype] from ../net/core/filter.c:2003:52: got unsigned long long [usertype] from ../net/core/filter.c:2003:58: warning: incorrect type in argument 4 (different base types) ../net/core/filter.c:2003:58: expected restricted __be16 [usertype] to ../net/core/filter.c:2003:58: got unsigned long long [usertype] to ../net/core/filter.c:2006:52: warning: incorrect type in argument 3 (different base types) ../net/core/filter.c:2006:52: expected restricted __be32 [usertype] from ../net/core/filter.c:2006:52: got unsigned long long [usertype] from ../net/core/filter.c:2006:58: warning: incorrect type in argument 4 (different base types) ../net/core/filter.c:2006:58: expected restricted __be32 [usertype] to ../net/core/filter.c:2006:58: got unsigned long long [usertype] to ../net/core/filter.c:2073:35: warning: incorrect type in return expression (different base types) ../net/core/filter.c:2073:35: expected unsigned long long ../net/core/filter.c:2073:35: got restricted __wsum [usertype] csum ../net/core/filter.c:5952:17: warning: incorrect type in assignment (different base types) ../net/core/filter.c:5952:17: expected unsigned int [usertype] spi ../net/core/filter.c:5952:17: got restricted __be32 const [usertype] spi ../net/core/filter.c:5960:33: warning: incorrect type in assignment (different base types) ../net/core/filter.c:5960:33: expected unsigned int [usertype] remote_ipv4 ../net/core/filter.c:5960:33: got restricted __be32 const [usertype] a4 ../fs/bpf_fs_kfuncs.c:42:25: warning: symbol 'bpf_get_task_exe_file' was not declared. Should it be static? ../fs/bpf_fs_kfuncs.c:58:18: warning: symbol 'bpf_put_file' was not declared. Should it be static? ../fs/bpf_fs_kfuncs.c:82:17: warning: symbol 'bpf_path_d_path' was not declared. Should it be static? ../fs/bpf_fs_kfuncs.c:130:17: warning: symbol 'bpf_get_dentry_xattr' was not declared. Should it be static? ../fs/bpf_fs_kfuncs.c:163:17: warning: symbol 'bpf_get_file_xattr' was not declared. Should it be static? ../fs/bpf_fs_kfuncs.c:289:17: warning: symbol 'bpf_set_dentry_xattr' was not declared. Should it be static? ../fs/bpf_fs_kfuncs.c:315:17: warning: symbol 'bpf_remove_dentry_xattr' was not declared. Should it be static? ../fs/bpf_fs_kfuncs.c:339:17: warning: symbol 'bpf_cgroup_read_xattr' was not declared. Should it be static? ../kernel/trace/bpf_trace.c: In function ‘____bpf_trace_printk’: ../kernel/trace/bpf_trace.c:377:9: warning: function ‘____bpf_trace_printk’ might be a candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format] 377 | ret = bstr_printf(data.buf, MAX_BPRINTF_BUF, fmt, data.bin_args); | ^~~ ../kernel/trace/bpf_trace.c: In function ‘____bpf_trace_vprintk’: ../kernel/trace/bpf_trace.c:433:9: warning: function ‘____bpf_trace_vprintk’ might be a candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format] 433 | ret = bstr_printf(data.buf, MAX_BPRINTF_BUF, fmt, data.bin_args); | ^~~ ../kernel/trace/bpf_trace.c: In function ‘____bpf_seq_printf’: ../kernel/trace/bpf_trace.c:475:9: warning: function ‘____bpf_seq_printf’ might be a candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format] 475 | seq_bprintf(m, fmt, data.bin_args); | ^~~~~~~~~~~ ../kernel/bpf/helpers.c: In function ‘____bpf_snprintf’: ../kernel/bpf/helpers.c:1067:9: warning: function ‘____bpf_snprintf’ might be a candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format] 1067 | err = bstr_printf(str, str_size, fmt, data.bin_args); | ^~~ ../kernel/bpf/core.c:250:49: error: arithmetics on pointers to functions ../kernel/bpf/core.c:2968:29: warning: symbol 'bpf_seq_printf_btf_proto' was not declared. Should it be static? ../kernel/bpf/core.c: note: in included file (through ../include/trace/trace_events.h, ../include/trace/define_trace.h, ../include/trace/events/xdp.h, ../include/linux/bpf_trace.h): ../include/trace/events/xdp.h:304:1: warning: Using plain integer as NULL pointer ../include/trace/events/xdp.h:331:1: warning: Using plain integer as NULL pointer ../kernel/bpf/core.c: note: in included file (through ../include/linux/rbtree_latch.h, ../include/linux/bpf.h, ../include/linux/filter.h): ../include/linux/rbtree.h:74:9: error: incompatible types in comparison expression (different address spaces): ../include/linux/rbtree.h:74:9: struct rb_node [noderef] __rcu * ../include/linux/rbtree.h:74:9: struct rb_node * ../include/linux/rbtree.h:74:9: error: incompatible types in comparison expression (different address spaces): ../include/linux/rbtree.h:74:9: struct rb_node [noderef] __rcu * ../include/linux/rbtree.h:74:9: struct rb_node * ../kernel/trace/bpf_trace.c:189:29: warning: symbol 'bpf_probe_read_user_proto' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:226:29: warning: symbol 'bpf_probe_read_user_str_proto' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:241:29: warning: symbol 'bpf_probe_read_kernel_proto' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:276:29: warning: symbol 'bpf_probe_read_kernel_str_proto' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:574:29: warning: symbol 'bpf_perf_event_read_proto' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:760:29: warning: symbol 'bpf_get_current_task_proto' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:771:29: warning: symbol 'bpf_get_current_task_btf_proto' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:785:29: warning: symbol 'bpf_task_pt_regs_proto' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:833:41: warning: incorrect type in assignment (different address spaces) ../kernel/trace/bpf_trace.c:833:41: expected void [noderef] __user *[addressable] [assigned] [usertype] sival_ptr ../kernel/trace/bpf_trace.c:833:41: got void * ../kernel/trace/bpf_trace.c:883:29: warning: symbol 'bpf_send_signal_proto' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:895:29: warning: symbol 'bpf_send_signal_thread_proto' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:1186:29: warning: symbol 'bpf_get_branch_snapshot_proto' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:3314:18: warning: symbol 'bpf_session_is_return' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:3322:19: warning: symbol 'bpf_session_cookie' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:3503:17: warning: symbol 'bpf_send_signal_task' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:3515:52: warning: cast removes address space '__user' of expression ../kernel/trace/bpf_trace.c:3512:17: warning: symbol 'bpf_probe_read_user_dynptr' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:3519:17: warning: symbol 'bpf_probe_read_kernel_dynptr' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:3529:56: warning: cast removes address space '__user' of expression ../kernel/trace/bpf_trace.c:3526:17: warning: symbol 'bpf_probe_read_user_str_dynptr' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:3533:17: warning: symbol 'bpf_probe_read_kernel_str_dynptr' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:3543:52: warning: cast removes address space '__user' of expression ../kernel/trace/bpf_trace.c:3540:17: warning: symbol 'bpf_copy_from_user_dynptr' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:3550:56: warning: cast removes address space '__user' of expression ../kernel/trace/bpf_trace.c:3547:17: warning: symbol 'bpf_copy_from_user_str_dynptr' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:3558:52: warning: cast removes address space '__user' of expression ../kernel/trace/bpf_trace.c:3554:17: warning: symbol 'bpf_copy_from_user_task_dynptr' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:3566:56: warning: cast removes address space '__user' of expression ../kernel/trace/bpf_trace.c:3562:17: warning: symbol 'bpf_copy_from_user_task_str_dynptr' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:2329:21: warning: dereference of noderef expression ../kernel/trace/bpf_trace.c:2333:66: warning: dereference of noderef expression ../kernel/trace/bpf_trace.c: note: in included file (through ../include/linux/rbtree.h, ../include/linux/mm_types.h, ../include/linux/mmzone.h, ../include/linux/gfp.h, ../include/linux/slab.h): ../include/linux/rcupdate.h:871:25: warning: context imbalance in 'uprobe_prog_run' - unexpected unlock ../kernel/bpf/helpers.c:1197:21: warning: incorrect type in assignment (different address spaces) ../kernel/bpf/helpers.c:1197:21: expected unsigned long long ( *[usertype] callback_fn )( ... ) ../kernel/bpf/helpers.c:1197:21: got void [noderef] __rcu * ../kernel/bpf/helpers.c:1912:29: warning: symbol 'bpf_get_current_task_proto' was not declared. Should it be static? ../kernel/bpf/helpers.c:1913:29: warning: symbol 'bpf_get_current_task_btf_proto' was not declared. Should it be static? ../kernel/bpf/helpers.c:1914:29: warning: symbol 'bpf_probe_read_user_proto' was not declared. Should it be static? ../kernel/bpf/helpers.c:1915:29: warning: symbol 'bpf_probe_read_user_str_proto' was not declared. Should it be static? ../kernel/bpf/helpers.c:1916:29: warning: symbol 'bpf_probe_read_kernel_proto' was not declared. Should it be static? ../kernel/bpf/helpers.c:1917:29: warning: symbol 'bpf_probe_read_kernel_str_proto' was not declared. Should it be static? ../kernel/bpf/helpers.c:1918:29: warning: symbol 'bpf_task_pt_regs_proto' was not declared. Should it be static? ../kernel/bpf/helpers.c:1919:29: warning: symbol 'bpf_perf_event_read_proto' was not declared. Should it be static? ../kernel/bpf/helpers.c:1920:29: warning: symbol 'bpf_send_signal_proto' was not declared. Should it be static? ../kernel/bpf/helpers.c:1921:29: warning: symbol 'bpf_send_signal_thread_proto' was not declared. Should it be static? ../kernel/bpf/helpers.c:1924:29: warning: symbol 'bpf_get_branch_snapshot_proto' was not declared. Should it be static? ../kernel/bpf/helpers.c:2184:18: warning: symbol 'bpf_obj_new_impl' was not declared. Should it be static? ../kernel/bpf/helpers.c:2198:18: warning: symbol 'bpf_percpu_obj_new_impl' was not declared. Should it be static? ../kernel/bpf/helpers.c:2229:18: warning: symbol 'bpf_obj_drop_impl' was not declared. Should it be static? ../kernel/bpf/helpers.c:2237:18: warning: symbol 'bpf_percpu_obj_drop_impl' was not declared. Should it be static? ../kernel/bpf/helpers.c:2243:18: warning: symbol 'bpf_refcount_acquire_impl' was not declared. Should it be static? ../kernel/bpf/helpers.c:2288:17: warning: symbol 'bpf_list_push_front_impl' was not declared. Should it be static? ../kernel/bpf/helpers.c:2298:17: warning: symbol 'bpf_list_push_back_impl' was not declared. Should it be static? ../kernel/bpf/helpers.c:2331:34: warning: symbol 'bpf_list_pop_front' was not declared. Should it be static? ../kernel/bpf/helpers.c:2336:34: warning: symbol 'bpf_list_pop_back' was not declared. Should it be static? ../kernel/bpf/helpers.c:2341:34: warning: symbol 'bpf_list_front' was not declared. Should it be static? ../kernel/bpf/helpers.c:2351:34: warning: symbol 'bpf_list_back' was not declared. Should it be static? ../kernel/bpf/helpers.c:2361:32: warning: symbol 'bpf_rbtree_remove' was not declared. Should it be static? ../kernel/bpf/helpers.c:2417:17: warning: symbol 'bpf_rbtree_add_impl' was not declared. Should it be static? ../kernel/bpf/helpers.c:2427:32: warning: symbol 'bpf_rbtree_first' was not declared. Should it be static? ../kernel/bpf/helpers.c:2434:32: warning: symbol 'bpf_rbtree_root' was not declared. Should it be static? ../kernel/bpf/helpers.c:2441:32: warning: symbol 'bpf_rbtree_left' was not declared. Should it be static? ../kernel/bpf/helpers.c:2451:32: warning: symbol 'bpf_rbtree_right' was not declared. Should it be static? ../kernel/bpf/helpers.c:2467:32: warning: symbol 'bpf_task_acquire' was not declared. Should it be static? ../kernel/bpf/helpers.c:2478:18: warning: symbol 'bpf_task_release' was not declared. Should it be static? ../kernel/bpf/helpers.c:2483:18: warning: symbol 'bpf_task_release_dtor' was not declared. Should it be static? ../kernel/bpf/helpers.c:2496:27: warning: symbol 'bpf_cgroup_acquire' was not declared. Should it be static? ../kernel/bpf/helpers.c:2508:18: warning: symbol 'bpf_cgroup_release' was not declared. Should it be static? ../kernel/bpf/helpers.c:2513:18: warning: symbol 'bpf_cgroup_release_dtor' was not declared. Should it be static? ../kernel/bpf/helpers.c:2526:27: warning: symbol 'bpf_cgroup_ancestor' was not declared. Should it be static? ../kernel/bpf/helpers.c:2546:27: warning: symbol 'bpf_cgroup_from_id' was not declared. Should it be static? ../kernel/bpf/helpers.c:2566:18: warning: symbol 'bpf_task_under_cgroup' was not declared. Should it be static? ../kernel/bpf/helpers.c:2609:27: warning: symbol 'bpf_task_get_cgroup1' was not declared. Should it be static? ../kernel/bpf/helpers.c:2626:32: warning: symbol 'bpf_task_from_pid' was not declared. Should it be static? ../kernel/bpf/helpers.c:2645:32: warning: symbol 'bpf_task_from_vpid' was not declared. Should it be static? ../kernel/bpf/helpers.c:2686:18: warning: symbol 'bpf_dynptr_slice' was not declared. Should it be static? ../kernel/bpf/helpers.c:2806:17: warning: symbol 'bpf_dynptr_adjust' was not declared. Should it be static? ../kernel/bpf/helpers.c:2825:18: warning: symbol 'bpf_dynptr_is_null' was not declared. Should it be static? ../kernel/bpf/helpers.c:2832:18: warning: symbol 'bpf_dynptr_is_rdonly' was not declared. Should it be static? ../kernel/bpf/helpers.c:2842:19: warning: symbol 'bpf_dynptr_size' was not declared. Should it be static? ../kernel/bpf/helpers.c:2852:17: warning: symbol 'bpf_dynptr_clone' was not declared. Should it be static? ../kernel/bpf/helpers.c:2879:17: warning: symbol 'bpf_dynptr_copy' was not declared. Should it be static? ../kernel/bpf/helpers.c:2934:18: warning: symbol 'bpf_dynptr_memset' was not declared. Should it be static? ../kernel/bpf/helpers.c:2969:18: warning: symbol 'bpf_cast_to_kern_ctx' was not declared. Should it be static? ../kernel/bpf/helpers.c:2974:18: warning: symbol 'bpf_rdonly_cast' was not declared. Should it be static? ../kernel/bpf/helpers.c:2979:18: warning: symbol 'bpf_rcu_read_lock' was not declared. Should it be static? ../kernel/bpf/helpers.c:2984:18: warning: symbol 'bpf_rcu_read_unlock' was not declared. Should it be static? ../kernel/bpf/helpers.c:3020:18: warning: symbol 'bpf_throw' was not declared. Should it be static? ../kernel/bpf/helpers.c:3039:17: warning: symbol 'bpf_wq_init' was not declared. Should it be static? ../kernel/bpf/helpers.c:3053:17: warning: symbol 'bpf_wq_start' was not declared. Should it be static? ../kernel/bpf/helpers.c:3070:17: warning: symbol 'bpf_wq_set_callback_impl' was not declared. Should it be static? ../kernel/bpf/helpers.c:3084:18: warning: symbol 'bpf_preempt_disable' was not declared. Should it be static? ../kernel/bpf/helpers.c:3089:18: warning: symbol 'bpf_preempt_enable' was not declared. Should it be static? ../kernel/bpf/helpers.c:3148:1: warning: symbol 'bpf_iter_bits_new' was not declared. Should it be static? ../kernel/bpf/helpers.c:3209:17: warning: symbol 'bpf_iter_bits_next' was not declared. Should it be static? ../kernel/bpf/helpers.c:3235:18: warning: symbol 'bpf_iter_bits_destroy' was not declared. Should it be static? ../kernel/bpf/helpers.c:3259:17: warning: symbol 'bpf_copy_from_user_str' was not declared. Should it be static? ../kernel/bpf/helpers.c:3304:17: warning: symbol 'bpf_copy_from_user_task_str' was not declared. Should it be static? ../kernel/bpf/helpers.c:3334:18: warning: symbol 'bpf_local_irq_save' was not declared. Should it be static? ../kernel/bpf/helpers.c:3339:18: warning: symbol 'bpf_local_irq_restore' was not declared. Should it be static? ../kernel/bpf/helpers.c:3344:18: warning: symbol '__bpf_trap' was not declared. Should it be static? ../kernel/bpf/helpers.c:3399:17: warning: symbol 'bpf_strcmp' was not declared. Should it be static? ../kernel/bpf/helpers.c:3417:17: warning: symbol 'bpf_strcasecmp' was not declared. Should it be static? ../kernel/bpf/helpers.c:3438:17: warning: symbol 'bpf_strnchr' was not declared. Should it be static? ../kernel/bpf/helpers.c:3475:17: warning: symbol 'bpf_strchr' was not declared. Should it be static? ../kernel/bpf/helpers.c:3492:17: warning: symbol 'bpf_strchrnul' was not declared. Should it be static? ../kernel/bpf/helpers.c:3524:17: warning: symbol 'bpf_strrchr' was not declared. Should it be static? ../kernel/bpf/helpers.c:3557:17: warning: symbol 'bpf_strnlen' was not declared. Should it be static? ../kernel/bpf/helpers.c:3587:17: warning: symbol 'bpf_strlen' was not declared. Should it be static? ../kernel/bpf/helpers.c:3605:17: warning: symbol 'bpf_strspn' was not declared. Should it be static? ../kernel/bpf/helpers.c:3649:17: warning: symbol 'bpf_strcspn' was not declared. Should it be static? ../kernel/bpf/helpers.c:3694:17: warning: symbol 'bpf_strnstr' was not declared. Should it be static? ../kernel/bpf/helpers.c:3747:17: warning: symbol 'bpf_strstr' was not declared. Should it be static? ../kernel/bpf/helpers.c:2979:18: warning: context imbalance in 'bpf_rcu_read_lock' - wrong count at exit ../kernel/bpf/helpers.c: note: in included file (through ../include/linux/workqueue.h, ../include/linux/bpf.h): ../include/linux/rcupdate.h:871:25: warning: context imbalance in 'bpf_rcu_read_unlock' - unexpected unlock ../kernel/bpf/verifier.c:355:12: warning: symbol 'btf_vmlinux' was not declared. Should it be static? ../kernel/bpf/verifier.c:22703:38: error: subtraction of functions? Share your drugs ../kernel/bpf/verifier.c: note: in included file (through ../include/linux/bpf.h, ../include/linux/bpf-cgroup.h): ../include/linux/bpfptr.h:65:40: warning: cast to non-scalar ../include/linux/bpfptr.h:65:40: warning: cast from non-scalar ../include/linux/bpfptr.h:65:40: warning: cast to non-scalar ../include/linux/bpfptr.h:65:40: warning: cast from non-scalar ../include/linux/bpfptr.h:65:40: warning: cast to non-scalar ../include/linux/bpfptr.h:65:40: warning: cast from non-scalar ../include/linux/bpfptr.h:65:40: warning: cast to non-scalar ../include/linux/bpfptr.h:65:40: warning: cast from non-scalar ../kernel/bpf/btf.c: note: in included file (through ../include/linux/bpf.h, ../include/linux/bpf_verifier.h): ../include/linux/bpfptr.h:65:40: warning: cast to non-scalar ../include/linux/bpfptr.h:65:40: warning: cast from non-scalar ../kernel/bpf/bpf_struct_ops.c:582:27: warning: symbol 'bpf_struct_ops_link_lops' was not declared. Should it be static? ../arch/x86/boot/version.c:18:12: warning: symbol 'kernel_version' was not declared. Should it be static? ../fs/bpf_fs_kfuncs.c:42:25: warning: symbol 'bpf_get_task_exe_file' was not declared. Should it be static? ../fs/bpf_fs_kfuncs.c:58:18: warning: symbol 'bpf_put_file' was not declared. Should it be static? ../fs/bpf_fs_kfuncs.c:82:17: warning: symbol 'bpf_path_d_path' was not declared. Should it be static? ../fs/bpf_fs_kfuncs.c:130:17: warning: symbol 'bpf_get_dentry_xattr' was not declared. Should it be static? ../fs/bpf_fs_kfuncs.c:163:17: warning: symbol 'bpf_get_file_xattr' was not declared. Should it be static? ../fs/bpf_fs_kfuncs.c:289:17: warning: symbol 'bpf_set_dentry_xattr' was not declared. Should it be static? ../fs/bpf_fs_kfuncs.c:315:17: warning: symbol 'bpf_remove_dentry_xattr' was not declared. Should it be static? ../fs/bpf_fs_kfuncs.c:339:17: warning: symbol 'bpf_cgroup_read_xattr' was not declared. Should it be static? ../kernel/bpf/bpf_struct_ops.c:582:27: warning: symbol 'bpf_struct_ops_link_lops' was not declared. Should it be static? ../kernel/bpf/helpers.c: In function ‘____bpf_snprintf’: ../kernel/bpf/helpers.c:1067:9: warning: function ‘____bpf_snprintf’ might be a candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format] 1067 | err = bstr_printf(str, str_size, fmt, data.bin_args); | ^~~ ../kernel/bpf/helpers.c:1197:21: warning: incorrect type in assignment (different address spaces) ../kernel/bpf/helpers.c:1197:21: expected unsigned long long ( *[usertype] callback_fn )( ... ) ../kernel/bpf/helpers.c:1197:21: got void [noderef] __rcu * ../kernel/bpf/helpers.c:1912:29: warning: symbol 'bpf_get_current_task_proto' was not declared. Should it be static? ../kernel/bpf/helpers.c:1913:29: warning: symbol 'bpf_get_current_task_btf_proto' was not declared. Should it be static? ../kernel/bpf/helpers.c:1914:29: warning: symbol 'bpf_probe_read_user_proto' was not declared. Should it be static? ../kernel/bpf/helpers.c:1915:29: warning: symbol 'bpf_probe_read_user_str_proto' was not declared. Should it be static? ../kernel/bpf/helpers.c:1916:29: warning: symbol 'bpf_probe_read_kernel_proto' was not declared. Should it be static? ../kernel/bpf/helpers.c:1917:29: warning: symbol 'bpf_probe_read_kernel_str_proto' was not declared. Should it be static? ../kernel/bpf/helpers.c:1918:29: warning: symbol 'bpf_task_pt_regs_proto' was not declared. Should it be static? ../kernel/bpf/helpers.c:1919:29: warning: symbol 'bpf_perf_event_read_proto' was not declared. Should it be static? ../kernel/bpf/helpers.c:1920:29: warning: symbol 'bpf_send_signal_proto' was not declared. Should it be static? ../kernel/bpf/helpers.c:1921:29: warning: symbol 'bpf_send_signal_thread_proto' was not declared. Should it be static? ../kernel/bpf/helpers.c:1924:29: warning: symbol 'bpf_get_branch_snapshot_proto' was not declared. Should it be static? ../kernel/bpf/helpers.c:2184:18: warning: symbol 'bpf_obj_new_impl' was not declared. Should it be static? ../kernel/bpf/helpers.c:2198:18: warning: symbol 'bpf_percpu_obj_new_impl' was not declared. Should it be static? ../kernel/bpf/helpers.c:2229:18: warning: symbol 'bpf_obj_drop_impl' was not declared. Should it be static? ../kernel/bpf/helpers.c:2237:18: warning: symbol 'bpf_percpu_obj_drop_impl' was not declared. Should it be static? ../kernel/bpf/helpers.c:2243:18: warning: symbol 'bpf_refcount_acquire_impl' was not declared. Should it be static? ../kernel/bpf/helpers.c:2288:17: warning: symbol 'bpf_list_push_front_impl' was not declared. Should it be static? ../kernel/bpf/helpers.c:2298:17: warning: symbol 'bpf_list_push_back_impl' was not declared. Should it be static? ../kernel/bpf/helpers.c:2331:34: warning: symbol 'bpf_list_pop_front' was not declared. Should it be static? ../kernel/bpf/helpers.c:2336:34: warning: symbol 'bpf_list_pop_back' was not declared. Should it be static? ../kernel/bpf/helpers.c:2341:34: warning: symbol 'bpf_list_front' was not declared. Should it be static? ../kernel/bpf/helpers.c:2351:34: warning: symbol 'bpf_list_back' was not declared. Should it be static? ../kernel/bpf/helpers.c:2361:32: warning: symbol 'bpf_rbtree_remove' was not declared. Should it be static? ../kernel/bpf/helpers.c:2417:17: warning: symbol 'bpf_rbtree_add_impl' was not declared. Should it be static? ../kernel/bpf/helpers.c:2427:32: warning: symbol 'bpf_rbtree_first' was not declared. Should it be static? ../kernel/bpf/helpers.c:2434:32: warning: symbol 'bpf_rbtree_root' was not declared. Should it be static? ../kernel/bpf/helpers.c:2441:32: warning: symbol 'bpf_rbtree_left' was not declared. Should it be static? ../kernel/bpf/helpers.c:2451:32: warning: symbol 'bpf_rbtree_right' was not declared. Should it be static? ../kernel/bpf/helpers.c:2467:32: warning: symbol 'bpf_task_acquire' was not declared. Should it be static? ../kernel/bpf/helpers.c:2478:18: warning: symbol 'bpf_task_release' was not declared. Should it be static? ../kernel/bpf/helpers.c:2483:18: warning: symbol 'bpf_task_release_dtor' was not declared. Should it be static? ../kernel/bpf/helpers.c:2496:27: warning: symbol 'bpf_cgroup_acquire' was not declared. Should it be static? ../kernel/bpf/helpers.c:2508:18: warning: symbol 'bpf_cgroup_release' was not declared. Should it be static? ../kernel/bpf/helpers.c:2513:18: warning: symbol 'bpf_cgroup_release_dtor' was not declared. Should it be static? ../kernel/bpf/helpers.c:2526:27: warning: symbol 'bpf_cgroup_ancestor' was not declared. Should it be static? ../kernel/bpf/helpers.c:2546:27: warning: symbol 'bpf_cgroup_from_id' was not declared. Should it be static? ../kernel/bpf/helpers.c:2566:18: warning: symbol 'bpf_task_under_cgroup' was not declared. Should it be static? ../kernel/bpf/helpers.c:2609:27: warning: symbol 'bpf_task_get_cgroup1' was not declared. Should it be static? ../kernel/bpf/helpers.c:2626:32: warning: symbol 'bpf_task_from_pid' was not declared. Should it be static? ../kernel/bpf/helpers.c:2645:32: warning: symbol 'bpf_task_from_vpid' was not declared. Should it be static? ../kernel/bpf/helpers.c:2686:18: warning: symbol 'bpf_dynptr_slice' was not declared. Should it be static? ../kernel/bpf/helpers.c:2806:17: warning: symbol 'bpf_dynptr_adjust' was not declared. Should it be static? ../kernel/bpf/helpers.c:2825:18: warning: symbol 'bpf_dynptr_is_null' was not declared. Should it be static? ../kernel/bpf/helpers.c:2832:18: warning: symbol 'bpf_dynptr_is_rdonly' was not declared. Should it be static? ../kernel/bpf/helpers.c:2842:19: warning: symbol 'bpf_dynptr_size' was not declared. Should it be static? ../kernel/bpf/helpers.c:2852:17: warning: symbol 'bpf_dynptr_clone' was not declared. Should it be static? ../kernel/bpf/helpers.c:2879:17: warning: symbol 'bpf_dynptr_copy' was not declared. Should it be static? ../kernel/bpf/helpers.c:2934:18: warning: symbol 'bpf_dynptr_memset' was not declared. Should it be static? ../kernel/bpf/helpers.c:2969:18: warning: symbol 'bpf_cast_to_kern_ctx' was not declared. Should it be static? ../kernel/bpf/helpers.c:2974:18: warning: symbol 'bpf_rdonly_cast' was not declared. Should it be static? ../kernel/bpf/helpers.c:2979:18: warning: symbol 'bpf_rcu_read_lock' was not declared. Should it be static? ../kernel/bpf/helpers.c:2984:18: warning: symbol 'bpf_rcu_read_unlock' was not declared. Should it be static? ../kernel/bpf/helpers.c:3020:18: warning: symbol 'bpf_throw' was not declared. Should it be static? ../kernel/bpf/helpers.c:3039:17: warning: symbol 'bpf_wq_init' was not declared. Should it be static? ../kernel/bpf/helpers.c:3053:17: warning: symbol 'bpf_wq_start' was not declared. Should it be static? ../kernel/bpf/helpers.c:3070:17: warning: symbol 'bpf_wq_set_callback_impl' was not declared. Should it be static? ../kernel/bpf/helpers.c:3084:18: warning: symbol 'bpf_preempt_disable' was not declared. Should it be static? ../kernel/bpf/helpers.c:3089:18: warning: symbol 'bpf_preempt_enable' was not declared. Should it be static? ../kernel/bpf/helpers.c:3148:1: warning: symbol 'bpf_iter_bits_new' was not declared. Should it be static? ../kernel/bpf/helpers.c:3209:17: warning: symbol 'bpf_iter_bits_next' was not declared. Should it be static? ../kernel/bpf/helpers.c:3235:18: warning: symbol 'bpf_iter_bits_destroy' was not declared. Should it be static? ../kernel/bpf/helpers.c:3259:17: warning: symbol 'bpf_copy_from_user_str' was not declared. Should it be static? ../kernel/bpf/helpers.c:3304:17: warning: symbol 'bpf_copy_from_user_task_str' was not declared. Should it be static? ../kernel/bpf/helpers.c:3334:18: warning: symbol 'bpf_local_irq_save' was not declared. Should it be static? ../kernel/bpf/helpers.c:3339:18: warning: symbol 'bpf_local_irq_restore' was not declared. Should it be static? ../kernel/bpf/helpers.c:3344:18: warning: symbol '__bpf_trap' was not declared. Should it be static? ../kernel/bpf/helpers.c:3399:17: warning: symbol 'bpf_strcmp' was not declared. Should it be static? ../kernel/bpf/helpers.c:3417:17: warning: symbol 'bpf_strcasecmp' was not declared. Should it be static? ../kernel/bpf/helpers.c:3438:17: warning: symbol 'bpf_strnchr' was not declared. Should it be static? ../kernel/bpf/helpers.c:3475:17: warning: symbol 'bpf_strchr' was not declared. Should it be static? ../kernel/bpf/helpers.c:3492:17: warning: symbol 'bpf_strchrnul' was not declared. Should it be static? ../kernel/bpf/helpers.c:3524:17: warning: symbol 'bpf_strrchr' was not declared. Should it be static? ../kernel/bpf/helpers.c:3557:17: warning: symbol 'bpf_strnlen' was not declared. Should it be static? ../kernel/bpf/helpers.c:3587:17: warning: symbol 'bpf_strlen' was not declared. Should it be static? ../kernel/bpf/helpers.c:3605:17: warning: symbol 'bpf_strspn' was not declared. Should it be static? ../kernel/bpf/helpers.c:3649:17: warning: symbol 'bpf_strcspn' was not declared. Should it be static? ../kernel/bpf/helpers.c:3694:17: warning: symbol 'bpf_strnstr' was not declared. Should it be static? ../kernel/bpf/helpers.c:3747:17: warning: symbol 'bpf_strstr' was not declared. Should it be static? ../kernel/bpf/helpers.c:2979:18: warning: context imbalance in 'bpf_rcu_read_lock' - wrong count at exit ../kernel/bpf/helpers.c: note: in included file (through ../include/linux/workqueue.h, ../include/linux/bpf.h): ../include/linux/rcupdate.h:871:25: warning: context imbalance in 'bpf_rcu_read_unlock' - unexpected unlock ../kernel/bpf/core.c:250:49: error: arithmetics on pointers to functions ../kernel/bpf/core.c:2968:29: warning: symbol 'bpf_seq_printf_btf_proto' was not declared. Should it be static? ../kernel/bpf/core.c: note: in included file (through ../include/trace/trace_events.h, ../include/trace/define_trace.h, ../include/trace/events/xdp.h, ../include/linux/bpf_trace.h): ../include/trace/events/xdp.h:304:1: warning: Using plain integer as NULL pointer ../include/trace/events/xdp.h:331:1: warning: Using plain integer as NULL pointer ../kernel/bpf/core.c: note: in included file (through ../include/linux/rbtree_latch.h, ../include/linux/bpf.h, ../include/linux/filter.h): ../include/linux/rbtree.h:74:9: error: incompatible types in comparison expression (different address spaces): ../include/linux/rbtree.h:74:9: struct rb_node [noderef] __rcu * ../include/linux/rbtree.h:74:9: struct rb_node * ../include/linux/rbtree.h:74:9: error: incompatible types in comparison expression (different address spaces): ../include/linux/rbtree.h:74:9: struct rb_node [noderef] __rcu * ../include/linux/rbtree.h:74:9: struct rb_node * ../kernel/trace/bpf_trace.c: In function ‘____bpf_trace_printk’: ../kernel/trace/bpf_trace.c:377:9: warning: function ‘____bpf_trace_printk’ might be a candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format] 377 | ret = bstr_printf(data.buf, MAX_BPRINTF_BUF, fmt, data.bin_args); | ^~~ ../kernel/trace/bpf_trace.c: In function ‘____bpf_trace_vprintk’: ../kernel/trace/bpf_trace.c:433:9: warning: function ‘____bpf_trace_vprintk’ might be a candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format] 433 | ret = bstr_printf(data.buf, MAX_BPRINTF_BUF, fmt, data.bin_args); | ^~~ ../kernel/trace/bpf_trace.c: In function ‘____bpf_seq_printf’: ../kernel/trace/bpf_trace.c:475:9: warning: function ‘____bpf_seq_printf’ might be a candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format] 475 | seq_bprintf(m, fmt, data.bin_args); | ^~~~~~~~~~~ ../kernel/trace/bpf_trace.c:189:29: warning: symbol 'bpf_probe_read_user_proto' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:226:29: warning: symbol 'bpf_probe_read_user_str_proto' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:241:29: warning: symbol 'bpf_probe_read_kernel_proto' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:276:29: warning: symbol 'bpf_probe_read_kernel_str_proto' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:574:29: warning: symbol 'bpf_perf_event_read_proto' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:760:29: warning: symbol 'bpf_get_current_task_proto' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:771:29: warning: symbol 'bpf_get_current_task_btf_proto' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:785:29: warning: symbol 'bpf_task_pt_regs_proto' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:833:41: warning: incorrect type in assignment (different address spaces) ../kernel/trace/bpf_trace.c:833:41: expected void [noderef] __user *[addressable] [assigned] [usertype] sival_ptr ../kernel/trace/bpf_trace.c:833:41: got void * ../kernel/trace/bpf_trace.c:883:29: warning: symbol 'bpf_send_signal_proto' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:895:29: warning: symbol 'bpf_send_signal_thread_proto' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:1186:29: warning: symbol 'bpf_get_branch_snapshot_proto' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:3314:18: warning: symbol 'bpf_session_is_return' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:3322:19: warning: symbol 'bpf_session_cookie' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:3503:17: warning: symbol 'bpf_send_signal_task' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:3515:52: warning: cast removes address space '__user' of expression ../kernel/trace/bpf_trace.c:3512:17: warning: symbol 'bpf_probe_read_user_dynptr' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:3519:17: warning: symbol 'bpf_probe_read_kernel_dynptr' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:3529:56: warning: cast removes address space '__user' of expression ../kernel/trace/bpf_trace.c:3526:17: warning: symbol 'bpf_probe_read_user_str_dynptr' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:3533:17: warning: symbol 'bpf_probe_read_kernel_str_dynptr' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:3543:52: warning: cast removes address space '__user' of expression ../kernel/trace/bpf_trace.c:3540:17: warning: symbol 'bpf_copy_from_user_dynptr' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:3550:56: warning: cast removes address space '__user' of expression ../kernel/trace/bpf_trace.c:3547:17: warning: symbol 'bpf_copy_from_user_str_dynptr' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:3558:52: warning: cast removes address space '__user' of expression ../kernel/trace/bpf_trace.c:3554:17: warning: symbol 'bpf_copy_from_user_task_dynptr' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:3566:56: warning: cast removes address space '__user' of expression ../kernel/trace/bpf_trace.c:3562:17: warning: symbol 'bpf_copy_from_user_task_str_dynptr' was not declared. Should it be static? ../kernel/trace/bpf_trace.c:2329:21: warning: dereference of noderef expression ../kernel/trace/bpf_trace.c:2333:66: warning: dereference of noderef expression ../kernel/trace/bpf_trace.c: note: in included file (through ../include/linux/rbtree.h, ../include/linux/mm_types.h, ../include/linux/mmzone.h, ../include/linux/gfp.h, ../include/linux/slab.h): ../include/linux/rcupdate.h:871:25: warning: context imbalance in 'uprobe_prog_run' - unexpected unlock ../kernel/bpf/btf.c: note: in included file (through ../include/linux/bpf.h, ../include/linux/bpf_verifier.h): ../include/linux/bpfptr.h:65:40: warning: cast to non-scalar ../include/linux/bpfptr.h:65:40: warning: cast from non-scalar ../net/core/filter.c:1440:39: warning: incorrect type in argument 1 (different address spaces) ../net/core/filter.c:1440:39: expected struct sock_filter const *filter ../net/core/filter.c:1440:39: got struct sock_filter [noderef] __user *filter ../net/core/filter.c:1518:39: warning: incorrect type in argument 1 (different address spaces) ../net/core/filter.c:1518:39: expected struct sock_filter const *filter ../net/core/filter.c:1518:39: got struct sock_filter [noderef] __user *filter ../net/core/filter.c:2341:45: warning: incorrect type in argument 2 (different base types) ../net/core/filter.c:2341:45: expected restricted __be32 [usertype] daddr ../net/core/filter.c:2341:45: got unsigned int [usertype] ipv4_nh ../net/core/filter.c:3949:29: warning: symbol 'bpf_xdp_get_buff_len_trace_proto' was not declared. Should it be static? ../net/core/filter.c:4681:29: warning: symbol 'bpf_skb_output_proto' was not declared. Should it be static? ../net/core/filter.c:5095:29: warning: symbol 'bpf_xdp_output_proto' was not declared. Should it be static? ../net/core/filter.c:8032:29: warning: symbol 'bpf_sk_storage_get_cg_sock_proto' was not declared. Should it be static? ../net/core/filter.c:12008:17: warning: symbol 'bpf_dynptr_from_skb' was not declared. Should it be static? ../net/core/filter.c:12041:17: warning: symbol 'bpf_dynptr_from_skb_meta' was not declared. Should it be static? ../net/core/filter.c:12060:17: warning: symbol 'bpf_dynptr_from_xdp' was not declared. Should it be static? ../net/core/filter.c:12076:17: warning: symbol 'bpf_sock_addr_set_sun_path' was not declared. Should it be static? ../net/core/filter.c:12097:17: warning: symbol 'bpf_sk_assign_tcp_reqsk' was not declared. Should it be static? ../net/core/filter.c:12194:17: warning: symbol 'bpf_sock_ops_enable_tx_tstamp' was not declared. Should it be static? ../net/core/filter.c:12327:17: warning: symbol 'bpf_sock_destroy' was not declared. Should it be static? ../net/core/filter.c:1948:43: warning: incorrect type in argument 2 (different base types) ../net/core/filter.c:1948:43: expected restricted __wsum [usertype] diff ../net/core/filter.c:1948:43: got unsigned long long [usertype] to ../net/core/filter.c:1951:36: warning: incorrect type in argument 2 (different base types) ../net/core/filter.c:1951:36: expected restricted __be16 [usertype] old ../net/core/filter.c:1951:36: got unsigned long long [usertype] from ../net/core/filter.c:1951:42: warning: incorrect type in argument 3 (different base types) ../net/core/filter.c:1951:42: expected restricted __be16 [usertype] new ../net/core/filter.c:1951:42: got unsigned long long [usertype] to ../net/core/filter.c:1954:36: warning: incorrect type in argument 2 (different base types) ../net/core/filter.c:1954:36: expected restricted __be32 [usertype] from ../net/core/filter.c:1954:36: got unsigned long long [usertype] from ../net/core/filter.c:1954:42: warning: incorrect type in argument 3 (different base types) ../net/core/filter.c:1954:42: expected restricted __be32 [usertype] to ../net/core/filter.c:1954:42: got unsigned long long [usertype] to ../net/core/filter.c:2000:59: warning: incorrect type in argument 3 (different base types) ../net/core/filter.c:2000:59: expected restricted __wsum [usertype] diff ../net/core/filter.c:2000:59: got unsigned long long [usertype] to ../net/core/filter.c:2003:52: warning: incorrect type in argument 3 (different base types) ../net/core/filter.c:2003:52: expected restricted __be16 [usertype] from ../net/core/filter.c:2003:52: got unsigned long long [usertype] from ../net/core/filter.c:2003:58: warning: incorrect type in argument 4 (different base types) ../net/core/filter.c:2003:58: expected restricted __be16 [usertype] to ../net/core/filter.c:2003:58: got unsigned long long [usertype] to ../net/core/filter.c:2006:52: warning: incorrect type in argument 3 (different base types) ../net/core/filter.c:2006:52: expected restricted __be32 [usertype] from ../net/core/filter.c:2006:52: got unsigned long long [usertype] from ../net/core/filter.c:2006:58: warning: incorrect type in argument 4 (different base types) ../net/core/filter.c:2006:58: expected restricted __be32 [usertype] to ../net/core/filter.c:2006:58: got unsigned long long [usertype] to ../net/core/filter.c:2073:35: warning: incorrect type in return expression (different base types) ../net/core/filter.c:2073:35: expected unsigned long long ../net/core/filter.c:2073:35: got restricted __wsum [usertype] csum ../net/core/filter.c:5952:17: warning: incorrect type in assignment (different base types) ../net/core/filter.c:5952:17: expected unsigned int [usertype] spi ../net/core/filter.c:5952:17: got restricted __be32 const [usertype] spi ../net/core/filter.c:5960:33: warning: incorrect type in assignment (different base types) ../net/core/filter.c:5960:33: expected unsigned int [usertype] remote_ipv4 ../net/core/filter.c:5960:33: got restricted __be32 const [usertype] a4 ../kernel/bpf/verifier.c:355:12: warning: symbol 'btf_vmlinux' was not declared. Should it be static? ../kernel/bpf/verifier.c:22694:38: error: subtraction of functions? Share your drugs ../kernel/bpf/verifier.c: note: in included file (through ../include/linux/bpf.h, ../include/linux/bpf-cgroup.h): ../include/linux/bpfptr.h:65:40: warning: cast to non-scalar ../include/linux/bpfptr.h:65:40: warning: cast from non-scalar ../include/linux/bpfptr.h:65:40: warning: cast to non-scalar ../include/linux/bpfptr.h:65:40: warning: cast from non-scalar ../include/linux/bpfptr.h:65:40: warning: cast to non-scalar ../include/linux/bpfptr.h:65:40: warning: cast from non-scalar ../include/linux/bpfptr.h:65:40: warning: cast to non-scalar ../include/linux/bpfptr.h:65:40: warning: cast from non-scalar ../arch/x86/boot/version.c:18:12: warning: symbol 'kernel_version' was not declared. Should it be static?