[kbuild-all] [congwang:bpf-timer 1/1] kernel/bpf/helpers.c:735:15: warning: initialized field overwritten

tree: https://github.com/congwang/linux.git bpf-timer head: 78245045626bf039d5e1ccc3a2f2f8b3a7079e8e commit: 78245045626bf039d5e1ccc3a2f2f8b3a7079e8e [1/1] bpf: introduce bpf timer config: arc-randconfig-r014-20210317 (attached as .config) compiler: arceb-elf-gcc (GCC) 9.3.0 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/congwang/linux/commit/78245045626bf039d5e1ccc3a2f2f8b3... git remote add congwang https://github.com/congwang/linux.git git fetch --no-tags congwang bpf-timer git checkout 78245045626bf039d5e1ccc3a2f2f8b3a7079e8e # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): include/linux/filter.h:456:47: error: unknown type name '__BPF_MAP_1' 456 | #define __BPF_MAP_2(m, v, t, a, ...) m(t, a), __BPF_MAP_1(m, v, __VA_ARGS__) | ^~~~~~~~~~~ include/linux/filter.h:457:47: note: in expansion of macro '__BPF_MAP_2' 457 | #define __BPF_MAP_3(m, v, t, a, ...) m(t, a), __BPF_MAP_2(m, v, __VA_ARGS__) | ^~~~~~~~~~~ include/linux/filter.h:458:47: note: in expansion of macro '__BPF_MAP_3' 458 | #define __BPF_MAP_4(m, v, t, a, ...) m(t, a), __BPF_MAP_3(m, v, __VA_ARGS__) | ^~~~~~~~~~~ include/linux/filter.h:468:27: note: in expansion of macro '__BPF_MAP_4' 468 | #define __BPF_MAP(n, ...) __BPF_MAP_##n(__VA_ARGS__) | ^~~~~~~~~~ include/linux/filter.h:465:26: note: in expansion of macro '__BPF_MAP' 465 | #define __BPF_REG_4(...) __BPF_MAP(4, __VA_ARGS__), __BPF_PAD(1) | ^~~~~~~~~ include/linux/filter.h:469:27: note: in expansion of macro '__BPF_REG_4' 469 | #define __BPF_REG(n, ...) __BPF_REG_##n(__VA_ARGS__) | ^~~~~~~~~~ include/linux/filter.h:490:11: note: in expansion of macro '__BPF_REG' 490 | u64 name(__BPF_REG(x, __BPF_DECL_REGS, __BPF_N, __VA_ARGS__)); \ | ^~~~~~~~~ include/linux/filter.h:502:31: note: in expansion of macro 'BPF_CALL_x' 502 | #define BPF_CALL_4(name, ...) BPF_CALL_x(4, name, __VA_ARGS__) | ^~~~~~~~~~ kernel/bpf/helpers.c:684:9: note: in expansion of macro 'BPF_CALL_4' 684 | notrace BPF_CALL_4(bpf_timer_create, void *, callback_fn, void *, callback_arg, | ^~~~~~~~~~ kernel/bpf/helpers.c:685:1: error: macro "__BPF_MAP_1" requires 5 arguments, but only 3 given 685 | u32, flags) | ^ ~~~~~~ In file included from kernel/bpf/helpers.c:12: include/linux/filter.h:455: note: macro "__BPF_MAP_1" defined here 455 | #define __BPF_MAP_1(m, v, t, a, ...) m(t, a) | include/linux/filter.h:456:47: error: unknown type name '__BPF_MAP_1' 456 | #define __BPF_MAP_2(m, v, t, a, ...) m(t, a), __BPF_MAP_1(m, v, __VA_ARGS__) | ^~~~~~~~~~~ include/linux/filter.h:457:47: note: in expansion of macro '__BPF_MAP_2' 457 | #define __BPF_MAP_3(m, v, t, a, ...) m(t, a), __BPF_MAP_2(m, v, __VA_ARGS__) | ^~~~~~~~~~~ include/linux/filter.h:458:47: note: in expansion of macro '__BPF_MAP_3' 458 | #define __BPF_MAP_4(m, v, t, a, ...) m(t, a), __BPF_MAP_3(m, v, __VA_ARGS__) | ^~~~~~~~~~~ include/linux/filter.h:468:27: note: in expansion of macro '__BPF_MAP_4' 468 | #define __BPF_MAP(n, ...) __BPF_MAP_##n(__VA_ARGS__) | ^~~~~~~~~~ include/linux/filter.h:465:26: note: in expansion of macro '__BPF_MAP' 465 | #define __BPF_REG_4(...) __BPF_MAP(4, __VA_ARGS__), __BPF_PAD(1) | ^~~~~~~~~ include/linux/filter.h:469:27: note: in expansion of macro '__BPF_REG_4' 469 | #define __BPF_REG(n, ...) __BPF_REG_##n(__VA_ARGS__) | ^~~~~~~~~~ include/linux/filter.h:491:11: note: in expansion of macro '__BPF_REG' 491 | u64 name(__BPF_REG(x, __BPF_DECL_REGS, __BPF_N, __VA_ARGS__)) \ | ^~~~~~~~~ include/linux/filter.h:502:31: note: in expansion of macro 'BPF_CALL_x' 502 | #define BPF_CALL_4(name, ...) BPF_CALL_x(4, name, __VA_ARGS__) | ^~~~~~~~~~ kernel/bpf/helpers.c:684:9: note: in expansion of macro 'BPF_CALL_4' 684 | notrace BPF_CALL_4(bpf_timer_create, void *, callback_fn, void *, callback_arg, | ^~~~~~~~~~ kernel/bpf/helpers.c:685:1: error: macro "__BPF_MAP_1" requires 5 arguments, but only 3 given 685 | u32, flags) | ^ ~~~~~~ In file included from kernel/bpf/helpers.c:12: include/linux/filter.h:455: note: macro "__BPF_MAP_1" defined here 455 | #define __BPF_MAP_1(m, v, t, a, ...) m(t, a) | kernel/bpf/helpers.c:685:1: error: macro "__BPF_MAP_1" requires 5 arguments, but only 3 given 685 | u32, flags) | ^ ~~~~~~ In file included from kernel/bpf/helpers.c:12: include/linux/filter.h:455: note: macro "__BPF_MAP_1" defined here 455 | #define __BPF_MAP_1(m, v, t, a, ...) m(t, a) | include/linux/filter.h:456:47: error: unknown type name '__BPF_MAP_1' 456 | #define __BPF_MAP_2(m, v, t, a, ...) m(t, a), __BPF_MAP_1(m, v, __VA_ARGS__) | ^~~~~~~~~~~ include/linux/filter.h:457:47: note: in expansion of macro '__BPF_MAP_2' 457 | #define __BPF_MAP_3(m, v, t, a, ...) m(t, a), __BPF_MAP_2(m, v, __VA_ARGS__) | ^~~~~~~~~~~ include/linux/filter.h:458:47: note: in expansion of macro '__BPF_MAP_3' 458 | #define __BPF_MAP_4(m, v, t, a, ...) m(t, a), __BPF_MAP_3(m, v, __VA_ARGS__) | ^~~~~~~~~~~ include/linux/filter.h:468:27: note: in expansion of macro '__BPF_MAP_4' 468 | #define __BPF_MAP(n, ...) __BPF_MAP_##n(__VA_ARGS__) | ^~~~~~~~~~ include/linux/filter.h:496:17: note: in expansion of macro '__BPF_MAP' 496 | u64 ____##name(__BPF_MAP(x, __BPF_DECL_ARGS, __BPF_V, __VA_ARGS__)) | ^~~~~~~~~ include/linux/filter.h:502:31: note: in expansion of macro 'BPF_CALL_x' 502 | #define BPF_CALL_4(name, ...) BPF_CALL_x(4, name, __VA_ARGS__) | ^~~~~~~~~~ kernel/bpf/helpers.c:684:9: note: in expansion of macro 'BPF_CALL_4' 684 | notrace BPF_CALL_4(bpf_timer_create, void *, callback_fn, void *, callback_arg, | ^~~~~~~~~~ kernel/bpf/helpers.c:707:11: error: 'bpf_timer_create' undeclared here (not in a function); did you mean 'bpf_timer_list'? 707 | .func = bpf_timer_create, | ^~~~~~~~~~~~~~~~ | bpf_timer_list 735 | .arg1_type = ARG_PTR_TO_LONG, | ^~~~~~~~~~~~~~~ kernel/bpf/helpers.c:735:15: note: (near initialization for 'bpf_timer_gettime_proto.<anonymous>.<anonymous>.arg1_type') In file included from include/linux/irqflags.h:15, from arch/arc/include/asm/smp.h:102, from arch/arc/include/asm/bitops.h:19, from include/linux/bitops.h:32, from include/linux/kernel.h:11, from include/linux/list.h:9, from include/linux/timer.h:5, from include/linux/workqueue.h:9, from include/linux/bpf.h:9, from kernel/bpf/helpers.c:4: kernel/bpf/helpers.c: In function '____bpf_timer_delete': kernel/bpf/helpers.c:764:31: error: 'irq_flags' undeclared (first use in this function); did you mean 'ifr_flags'? 764 | spin_lock_irqsave(&idr_lock, irq_flags); | ^~~~~~~~~ include/linux/typecheck.h:11:9: note: in definition of macro 'typecheck' 11 | typeof(x) __dummy2; \ | ^ include/linux/spinlock.h:384:2: note: in expansion of macro 'raw_spin_lock_irqsave' 384 | raw_spin_lock_irqsave(spinlock_check(lock), flags); \ | ^~~~~~~~~~~~~~~~~~~~~ kernel/bpf/helpers.c:764:2: note: in expansion of macro 'spin_lock_irqsave' 764 | spin_lock_irqsave(&idr_lock, irq_flags); | ^~~~~~~~~~~~~~~~~ kernel/bpf/helpers.c:764:31: note: each undeclared identifier is reported only once for each function it appears in 764 | spin_lock_irqsave(&idr_lock, irq_flags); | ^~~~~~~~~ include/linux/typecheck.h:11:9: note: in definition of macro 'typecheck' 11 | typeof(x) __dummy2; \ | ^ include/linux/spinlock.h:384:2: note: in expansion of macro 'raw_spin_lock_irqsave' 384 | raw_spin_lock_irqsave(spinlock_check(lock), flags); \ | ^~~~~~~~~~~~~~~~~~~~~ kernel/bpf/helpers.c:764:2: note: in expansion of macro 'spin_lock_irqsave' 764 | spin_lock_irqsave(&idr_lock, irq_flags); | ^~~~~~~~~~~~~~~~~ 12 | (void)(&__dummy == &__dummy2); \ | ^~ include/linux/spinlock.h:251:3: note: in expansion of macro 'typecheck' 251 | typecheck(unsigned long, flags); \ | ^~~~~~~~~ include/linux/spinlock.h:384:2: note: in expansion of macro 'raw_spin_lock_irqsave' 384 | raw_spin_lock_irqsave(spinlock_check(lock), flags); \ | ^~~~~~~~~~~~~~~~~~~~~ kernel/bpf/helpers.c:764:2: note: in expansion of macro 'spin_lock_irqsave' 764 | spin_lock_irqsave(&idr_lock, irq_flags); | ^~~~~~~~~~~~~~~~~ At top level: kernel/bpf/helpers.c:675:13: warning: 'bpf_timer_callback' defined but not used [-Wunused-function] 675 | static void bpf_timer_callback(struct timer_list *t) | ^~~~~~~~~~~~~~~~~~ vim +735 kernel/bpf/helpers.c 729 730 const struct bpf_func_proto bpf_timer_gettime_proto = { 731 .func = bpf_timer_gettime, 732 .gpl_only = false, 733 .ret_type = RET_INTEGER, 734 .arg1_type = ARG_ANYTHING, 736 }; 737 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org