tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 9803fb968c8c2e1283f67b3baeb88e0adba435b4 commit: ceeec6f49cb30b8ba321677f4498e6158c6b4deb [8399/8516] cpumask: use find_first_and_bit() config: i386-randconfig-r021-20210816 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 2c6448cdc2f68f8c28fd0bd9404182b81306e6e6) 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://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi... git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout ceeec6f49cb30b8ba321677f4498e6158c6b4deb # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=i386 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 >>): In file included from include/linux/of.h:15: In file included from include/linux/bitops.h:32: In file included from arch/x86/include/asm/bitops.h:17: arch/x86/include/asm/alternative.h:90:63: warning: unused parameter 'mod' [-Wunused-parameter] static inline void alternatives_smp_module_add(struct module *mod, char *name, ^ arch/x86/include/asm/alternative.h:90:74: warning: unused parameter 'name' [-Wunused-parameter] static inline void alternatives_smp_module_add(struct module *mod, char *name, ^ arch/x86/include/asm/alternative.h:91:19: warning: unused parameter 'locks' [-Wunused-parameter] void *locks, void *locks_end, ^ arch/x86/include/asm/alternative.h:91:32: warning: unused parameter 'locks_end' [-Wunused-parameter] void *locks, void *locks_end, ^ arch/x86/include/asm/alternative.h:92:19: warning: unused parameter 'text' [-Wunused-parameter] void *text, void *text_end) {} ^ arch/x86/include/asm/alternative.h:92:31: warning: unused parameter 'text_end' [-Wunused-parameter] void *text, void *text_end) {} ^ arch/x86/include/asm/alternative.h:93:63: warning: unused parameter 'mod' [-Wunused-parameter] static inline void alternatives_smp_module_del(struct module *mod) {} ^ arch/x86/include/asm/alternative.h:95:52: warning: unused parameter 'start' [-Wunused-parameter] static inline int alternatives_text_reserved(void *start, void *end) ^ arch/x86/include/asm/alternative.h:95:65: warning: unused parameter 'end' [-Wunused-parameter] static inline int alternatives_text_reserved(void *start, void *end) ^ In file included from drivers/gpu/drm/i915/i915_drv.c:30: In file included from include/linux/acpi.h:13: In file included from include/linux/irqdomain.h:35: In file included from include/linux/of.h:15: In file included from include/linux/bitops.h:32: In file included from arch/x86/include/asm/bitops.h:389: In file included from include/asm-generic/bitops/instrumented-atomic.h:14: include/linux/instrumented.h:116:38: warning: unused parameter 'to' [-Wunused-parameter] instrument_copy_to_user(void __user *to, const void *from, unsigned long n) ^ include/linux/instrumented.h:133:62: warning: unused parameter 'from' [-Wunused-parameter] instrument_copy_from_user(const void *to, const void __user *from, unsigned long n) ^ In file included from drivers/gpu/drm/i915/i915_drv.c:30: In file included from include/linux/acpi.h:13: In file included from include/linux/irqdomain.h:35: In file included from include/linux/of.h:15: In file included from include/linux/bitops.h:32: In file included from arch/x86/include/asm/bitops.h:393: In file included from include/asm-generic/bitops/le.h:6: In file included from arch/x86/include/uapi/asm/byteorder.h:5: In file included from include/linux/byteorder/little_endian.h:11: include/linux/byteorder/generic.h:195:16: warning: comparison of integers of different signs: 'int' and 'size_t' (aka 'unsigned int') [-Wsign-compare] for (i = 0; i < len; i++) ~ ^ ~~~ include/linux/byteorder/generic.h:203:16: warning: comparison of integers of different signs: 'int' and 'size_t' (aka 'unsigned int') [-Wsign-compare] for (i = 0; i < len; i++) ~ ^ ~~~ In file included from drivers/gpu/drm/i915/i915_drv.c:30: In file included from include/linux/acpi.h:13: In file included from include/linux/irqdomain.h:35: In file included from include/linux/of.h:17: In file included from include/linux/kobject.h:19: In file included from include/linux/list.h:9: include/linux/kernel.h:323:48: warning: unused parameter 'fmt' [-Wunused-parameter] void ____trace_printk_check_format(const char *fmt, ...) ^ In file included from drivers/gpu/drm/i915/i915_drv.c:30: In file included from include/linux/acpi.h:13: In file included from include/linux/irqdomain.h:35: In file included from include/linux/of.h:17: In file included from include/linux/kobject.h:20: In file included from include/linux/sysfs.h:16: In file included from include/linux/kernfs.h:12: In file included from include/linux/mutex.h:14: In file included from arch/x86/include/asm/current.h:6: In file included from arch/x86/include/asm/percpu.h:390: In file included from include/asm-generic/percpu.h:7: include/linux/percpu-defs.h:313:57: warning: unused parameter 'op' [-Wunused-parameter] static inline void __this_cpu_preempt_check(const char *op) { } ^ In file included from drivers/gpu/drm/i915/i915_drv.c:30: In file included from include/linux/acpi.h:13: In file included from include/linux/irqdomain.h:35: In file included from include/linux/of.h:17: In file included from include/linux/kobject.h:20: In file included from include/linux/sysfs.h:16: In file included from include/linux/kernfs.h:12: In file included from include/linux/mutex.h:17: In file included from include/linux/lockdep.h:14: In file included from include/linux/smp.h:13: include/linux/cpumask.h:105:51: warning: unused parameter 'cpu' [-Wunused-parameter] static inline void cpu_max_bits_warn(unsigned int cpu, unsigned int bits) ^ include/linux/cpumask.h:105:69: warning: unused parameter 'bits' [-Wunused-parameter] static inline void cpu_max_bits_warn(unsigned int cpu, unsigned int bits) ^ include/linux/cpumask.h:121:64: warning: unused parameter 'srcp' [-Wunused-parameter] static inline unsigned int cpumask_first(const struct cpumask *srcp) ^ static inline unsigned int cpumask_first_and(const struct cpumask *srcp1, ^ const struct cpumask *srcp2) ^ include/linux/cpumask.h:132:63: warning: unused parameter 'srcp' [-Wunused-parameter] static inline unsigned int cpumask_last(const struct cpumask *srcp) ^ include/linux/cpumask.h:138:70: warning: unused parameter 'srcp' [-Wunused-parameter] static inline unsigned int cpumask_next(int n, const struct cpumask *srcp) ^ include/linux/cpumask.h:143:75: warning: unused parameter 'srcp' [-Wunused-parameter] static inline unsigned int cpumask_next_zero(int n, const struct cpumask *srcp) ^ include/linux/cpumask.h:149:32: warning: unused parameter 'srcp' [-Wunused-parameter] const struct cpumask *srcp, ^ include/linux/cpumask.h:150:32: warning: unused parameter 'andp' [-Wunused-parameter] const struct cpumask *andp) ^ include/linux/cpumask.h:155:75: warning: unused parameter 'mask' [-Wunused-parameter] static inline unsigned int cpumask_next_wrap(int n, const struct cpumask *mask, ^ include/linux/cpumask.h:156:15: warning: unused parameter 'start' [-Wunused-parameter] int start, bool wrap) ^ include/linux/cpumask.h:163:66: warning: unused parameter 'mask' [-Wunused-parameter] static inline unsigned int cpumask_any_but(const struct cpumask *mask, ^ include/linux/cpumask.h:164:22: warning: unused parameter 'cpu' [-Wunused-parameter] unsigned int cpu) ^ include/linux/cpumask.h:169:62: warning: unused parameter 'i' [-Wunused-parameter] static inline unsigned int cpumask_local_spread(unsigned int i, int node) ^ include/linux/cpumask.h:169:69: warning: unused parameter 'node' [-Wunused-parameter] static inline unsigned int cpumask_local_spread(unsigned int i, int node) ^ include/linux/cpumask.h:748:53: warning: unused parameter 'mask' [-Wunused-parameter] static inline bool alloc_cpumask_var(cpumask_var_t *mask, gfp_t flags) ^ include/linux/cpumask.h:748:65: warning: unused parameter 'flags' [-Wunused-parameter] static inline bool alloc_cpumask_var(cpumask_var_t *mask, gfp_t flags) ^ include/linux/cpumask.h:753:58: warning: unused parameter 'mask' [-Wunused-parameter] static inline bool alloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags, ^ include/linux/cpumask.h:753:70: warning: unused parameter 'flags' [-Wunused-parameter] static inline bool alloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags, ^ include/linux/cpumask.h:754:12: warning: unused parameter 'node' [-Wunused-parameter] int node) ^ include/linux/cpumask.h:759:66: warning: unused parameter 'flags' [-Wunused-parameter] static inline bool zalloc_cpumask_var(cpumask_var_t *mask, gfp_t flags) ^ include/linux/cpumask.h:765:71: warning: unused parameter 'flags' [-Wunused-parameter] static inline bool zalloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags, ^ include/linux/cpumask.h:766:12: warning: unused parameter 'node' [-Wunused-parameter] int node) ^ include/linux/cpumask.h:772:61: warning: unused parameter 'mask' [-Wunused-parameter] static inline void alloc_bootmem_cpumask_var(cpumask_var_t *mask) ^ include/linux/cpumask.h:776:51: warning: unused parameter 'mask' [-Wunused-parameter] static inline void free_cpumask_var(cpumask_var_t mask) ^ include/linux/cpumask.h:780:59: warning: unused parameter 'mask' [-Wunused-parameter] static inline void free_bootmem_cpumask_var(cpumask_var_t mask) ^ include/linux/cpumask.h:784:52: warning: unused parameter 'mask' [-Wunused-parameter] static inline bool cpumask_available(cpumask_var_t mask) ^ include/linux/cpumask.h:864:58: warning: unused parameter 'bitmap' [-Wunused-parameter] static inline int __check_is_bitmap(const unsigned long *bitmap) ^ include/linux/cpumask.h:955:43: warning: unused parameter 'cpu' [-Wunused-parameter] static inline bool cpu_dying(unsigned int cpu) ^ In file included from drivers/gpu/drm/i915/i915_drv.c:30: In file included from include/linux/acpi.h:13: In file included from include/linux/irqdomain.h:35: In file included from include/linux/of.h:17: In file included from include/linux/kobject.h:20: In file included from include/linux/sysfs.h:16: In file included from include/linux/kernfs.h:12: In file included from include/linux/mutex.h:17: In file included from include/linux/lockdep.h:14: include/linux/smp.h:193:57: warning: unused parameter 'func' [-Wunused-parameter] static inline void up_smp_call_function(smp_call_func_t func, void *info) ^ include/linux/smp.h:193:69: warning: unused parameter 'info' [-Wunused-parameter] static inline void up_smp_call_function(smp_call_func_t func, void *info) ^ include/linux/smp.h:199:44: warning: unused parameter 'cpu' [-Wunused-parameter] static inline void smp_send_reschedule(int cpu) { } ^ include/linux/smp.h:206:45: warning: unused parameter 'mask' [-Wunused-parameter] smp_call_function_any(const struct cpumask *mask, smp_call_func_t func, ^ In file included from drivers/gpu/drm/i915/i915_drv.c:30: In file included from include/linux/acpi.h:13: -- In file included from arch/x86/include/asm/hypervisor.h:37: In file included from arch/x86/include/asm/kvm_para.h:5: In file included from arch/x86/include/asm/processor.h:13: In file included from arch/x86/include/asm/math_emu.h:5: In file included from arch/x86/include/asm/ptrace.h:97: In file included from arch/x86/include/asm/paravirt_types.h:40: In file included from arch/x86/include/asm/nospec-branch.h:12: In file included from arch/x86/include/asm/unwind_hints.h:6: In file included from arch/x86/include/asm/orc_types.h:43: In file included from arch/x86/include/uapi/asm/byteorder.h:5: In file included from include/linux/byteorder/little_endian.h:11: include/linux/byteorder/generic.h:195:16: warning: comparison of integers of different signs: 'int' and 'size_t' (aka 'unsigned int') [-Wsign-compare] for (i = 0; i < len; i++) ~ ^ ~~~ include/linux/byteorder/generic.h:203:16: warning: comparison of integers of different signs: 'int' and 'size_t' (aka 'unsigned int') [-Wsign-compare] for (i = 0; i < len; i++) ~ ^ ~~~ In file included from drivers/gpu/drm/i915/i915_config.c:6: In file included from drivers/gpu/drm/i915/i915_drv.h:36: In file included from arch/x86/include/asm/hypervisor.h:37: In file included from arch/x86/include/asm/kvm_para.h:5: In file included from arch/x86/include/asm/processor.h:13: In file included from arch/x86/include/asm/math_emu.h:5: arch/x86/include/asm/ptrace.h:149:52: warning: unused parameter 'regs' [-Wunused-parameter] static inline bool user_64bit_mode(struct pt_regs *regs) ^ arch/x86/include/asm/ptrace.h:171:51: warning: unused parameter 'regs' [-Wunused-parameter] static inline bool any_64bit_mode(struct pt_regs *regs) ^ In file included from drivers/gpu/drm/i915/i915_config.c:6: In file included from drivers/gpu/drm/i915/i915_drv.h:36: In file included from arch/x86/include/asm/hypervisor.h:37: In file included from arch/x86/include/asm/kvm_para.h:5: In file included from arch/x86/include/asm/processor.h:17: In file included from arch/x86/include/asm/current.h:6: In file included from arch/x86/include/asm/percpu.h:27: In file included from include/linux/kernel.h:12: In file included from include/linux/bitops.h:32: In file included from arch/x86/include/asm/bitops.h:389: In file included from include/asm-generic/bitops/instrumented-atomic.h:14: include/linux/instrumented.h:116:38: warning: unused parameter 'to' [-Wunused-parameter] instrument_copy_to_user(void __user *to, const void *from, unsigned long n) ^ include/linux/instrumented.h:133:62: warning: unused parameter 'from' [-Wunused-parameter] instrument_copy_from_user(const void *to, const void __user *from, unsigned long n) ^ In file included from drivers/gpu/drm/i915/i915_config.c:6: In file included from drivers/gpu/drm/i915/i915_drv.h:36: In file included from arch/x86/include/asm/hypervisor.h:37: In file included from arch/x86/include/asm/kvm_para.h:5: In file included from arch/x86/include/asm/processor.h:17: In file included from arch/x86/include/asm/current.h:6: In file included from arch/x86/include/asm/percpu.h:27: include/linux/kernel.h:323:48: warning: unused parameter 'fmt' [-Wunused-parameter] void ____trace_printk_check_format(const char *fmt, ...) ^ In file included from drivers/gpu/drm/i915/i915_config.c:6: In file included from drivers/gpu/drm/i915/i915_drv.h:36: In file included from arch/x86/include/asm/hypervisor.h:37: In file included from arch/x86/include/asm/kvm_para.h:5: In file included from arch/x86/include/asm/processor.h:17: In file included from arch/x86/include/asm/current.h:6: In file included from arch/x86/include/asm/percpu.h:390: In file included from include/asm-generic/percpu.h:7: include/linux/percpu-defs.h:313:57: warning: unused parameter 'op' [-Wunused-parameter] static inline void __this_cpu_preempt_check(const char *op) { } ^ In file included from drivers/gpu/drm/i915/i915_config.c:6: In file included from drivers/gpu/drm/i915/i915_drv.h:36: In file included from arch/x86/include/asm/hypervisor.h:37: In file included from arch/x86/include/asm/kvm_para.h:5: In file included from arch/x86/include/asm/processor.h:19: arch/x86/include/asm/page.h:25:62: warning: unused parameter 'vaddr' [-Wunused-parameter] static inline void clear_user_page(void *page, unsigned long vaddr, ^ arch/x86/include/asm/page.h:26:21: warning: unused parameter 'pg' [-Wunused-parameter] struct page *pg) ^ arch/x86/include/asm/page.h:31:71: warning: unused parameter 'vaddr' [-Wunused-parameter] static inline void copy_user_page(void *to, void *from, unsigned long vaddr, ^ arch/x86/include/asm/page.h:32:20: warning: unused parameter 'topage' [-Wunused-parameter] struct page *topage) ^ In file included from drivers/gpu/drm/i915/i915_config.c:6: In file included from drivers/gpu/drm/i915/i915_drv.h:36: In file included from arch/x86/include/asm/hypervisor.h:37: In file included from arch/x86/include/asm/kvm_para.h:5: In file included from arch/x86/include/asm/processor.h:22: In file included from arch/x86/include/asm/msr.h:11: In file included from arch/x86/include/asm/cpumask.h:5: include/linux/cpumask.h:105:51: warning: unused parameter 'cpu' [-Wunused-parameter] static inline void cpu_max_bits_warn(unsigned int cpu, unsigned int bits) ^ include/linux/cpumask.h:105:69: warning: unused parameter 'bits' [-Wunused-parameter] static inline void cpu_max_bits_warn(unsigned int cpu, unsigned int bits) ^ include/linux/cpumask.h:121:64: warning: unused parameter 'srcp' [-Wunused-parameter] static inline unsigned int cpumask_first(const struct cpumask *srcp) ^ static inline unsigned int cpumask_first_and(const struct cpumask *srcp1, ^ const struct cpumask *srcp2) ^ include/linux/cpumask.h:132:63: warning: unused parameter 'srcp' [-Wunused-parameter] static inline unsigned int cpumask_last(const struct cpumask *srcp) ^ include/linux/cpumask.h:138:70: warning: unused parameter 'srcp' [-Wunused-parameter] static inline unsigned int cpumask_next(int n, const struct cpumask *srcp) ^ include/linux/cpumask.h:143:75: warning: unused parameter 'srcp' [-Wunused-parameter] static inline unsigned int cpumask_next_zero(int n, const struct cpumask *srcp) ^ include/linux/cpumask.h:149:32: warning: unused parameter 'srcp' [-Wunused-parameter] const struct cpumask *srcp, ^ include/linux/cpumask.h:150:32: warning: unused parameter 'andp' [-Wunused-parameter] const struct cpumask *andp) ^ include/linux/cpumask.h:155:75: warning: unused parameter 'mask' [-Wunused-parameter] static inline unsigned int cpumask_next_wrap(int n, const struct cpumask *mask, ^ include/linux/cpumask.h:156:15: warning: unused parameter 'start' [-Wunused-parameter] int start, bool wrap) ^ include/linux/cpumask.h:163:66: warning: unused parameter 'mask' [-Wunused-parameter] static inline unsigned int cpumask_any_but(const struct cpumask *mask, ^ include/linux/cpumask.h:164:22: warning: unused parameter 'cpu' [-Wunused-parameter] unsigned int cpu) ^ include/linux/cpumask.h:169:62: warning: unused parameter 'i' [-Wunused-parameter] static inline unsigned int cpumask_local_spread(unsigned int i, int node) ^ include/linux/cpumask.h:169:69: warning: unused parameter 'node' [-Wunused-parameter] static inline unsigned int cpumask_local_spread(unsigned int i, int node) ^ include/linux/cpumask.h:748:53: warning: unused parameter 'mask' [-Wunused-parameter] static inline bool alloc_cpumask_var(cpumask_var_t *mask, gfp_t flags) ^ include/linux/cpumask.h:748:65: warning: unused parameter 'flags' [-Wunused-parameter] static inline bool alloc_cpumask_var(cpumask_var_t *mask, gfp_t flags) ^ include/linux/cpumask.h:753:58: warning: unused parameter 'mask' [-Wunused-parameter] static inline bool alloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags, ^ include/linux/cpumask.h:753:70: warning: unused parameter 'flags' [-Wunused-parameter] static inline bool alloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags, ^ include/linux/cpumask.h:754:12: warning: unused parameter 'node' [-Wunused-parameter] int node) ^ include/linux/cpumask.h:759:66: warning: unused parameter 'flags' [-Wunused-parameter] static inline bool zalloc_cpumask_var(cpumask_var_t *mask, gfp_t flags) ^ include/linux/cpumask.h:765:71: warning: unused parameter 'flags' [-Wunused-parameter] static inline bool zalloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags, ^ include/linux/cpumask.h:766:12: warning: unused parameter 'node' [-Wunused-parameter] int node) ^ include/linux/cpumask.h:772:61: warning: unused parameter 'mask' [-Wunused-parameter] static inline void alloc_bootmem_cpumask_var(cpumask_var_t *mask) ^ include/linux/cpumask.h:776:51: warning: unused parameter 'mask' [-Wunused-parameter] static inline void free_cpumask_var(cpumask_var_t mask) ^ include/linux/cpumask.h:780:59: warning: unused parameter 'mask' [-Wunused-parameter] static inline void free_bootmem_cpumask_var(cpumask_var_t mask) ^ include/linux/cpumask.h:784:52: warning: unused parameter 'mask' [-Wunused-parameter] static inline bool cpumask_available(cpumask_var_t mask) ^ include/linux/cpumask.h:864:58: warning: unused parameter 'bitmap' [-Wunused-parameter] static inline int __check_is_bitmap(const unsigned long *bitmap) ^ include/linux/cpumask.h:955:43: warning: unused parameter 'cpu' [-Wunused-parameter] static inline bool cpu_dying(unsigned int cpu) ^ In file included from drivers/gpu/drm/i915/i915_config.c:6: In file included from drivers/gpu/drm/i915/i915_drv.h:36: In file included from arch/x86/include/asm/hypervisor.h:37: In file included from arch/x86/include/asm/kvm_para.h:5: In file included from arch/x86/include/asm/processor.h:22: arch/x86/include/asm/msr.h:346:45: warning: unused parameter 'cpu' [-Wunused-parameter] static inline int rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h) ^ arch/x86/include/asm/msr.h:351:45: warning: unused parameter 'cpu' [-Wunused-parameter] static inline int wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h) ^ arch/x86/include/asm/msr.h:356:46: warning: unused parameter 'cpu' [-Wunused-parameter] static inline int rdmsrl_on_cpu(unsigned int cpu, u32 msr_no, u64 *q) ^ arch/x86/include/asm/msr.h:361:46: warning: unused parameter 'cpu' [-Wunused-parameter] static inline int wrmsrl_on_cpu(unsigned int cpu, u32 msr_no, u64 q) ^ arch/x86/include/asm/msr.h:366:56: warning: unused parameter 'm' [-Wunused-parameter] static inline void rdmsr_on_cpus(const struct cpumask *m, u32 msr_no, ^ arch/x86/include/asm/msr.h:371:56: warning: unused parameter 'm' [-Wunused-parameter] static inline void wrmsr_on_cpus(const struct cpumask *m, u32 msr_no, ^ .. vim +/srcp1 +126 include/linux/cpumask.h 104 106 { 107 #ifdef CONFIG_DEBUG_PER_CPU_MAPS 108 WARN_ON_ONCE(cpu >= bits); 109 #endif /* CONFIG_DEBUG_PER_CPU_MAPS */ 110 } 111 112 /* verify cpu argument to cpumask_* operators */ 113 static inline unsigned int cpumask_check(unsigned int cpu) 114 { 115 cpu_max_bits_warn(cpu, nr_cpumask_bits); 116 return cpu; 117 } 118 119 #if NR_CPUS == 1 120 /* Uniprocessor. Assume all masks are "1". */ 121 static inline unsigned int cpumask_first(const struct cpumask *srcp) 122 { 123 return 0; 124 } 125 128 { 129 return 0; 130 } 131 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org