Hi Stephen, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 7800ca95d0ed11b492962dc3abc2181c9d5f7f82 commit: c3edca52a70e2f1ce3a323d3e9d637fcf52d53d6 [11847/12015] don't make the syscall checking produced errors from warnings config: h8300-edosk2674_defconfig (attached as .config) compiler: h8300-linux-gcc (GCC) 11.2.0 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://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=c3edca52a70e2f1ce3a323d3e9d637fcf52d53d6 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 c3edca52a70e2f1ce3a323d3e9d637fcf52d53d6 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=h8300 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> arch/h8300/kernel/process.c:58:6: error: no previous prototype for 'arch_cpu_idle' [-Werror=missing-prototypes] 58 | void arch_cpu_idle(void) | ^~~~~~~~~~~~~ >> arch/h8300/kernel/process.c:155:16: error: no previous prototype for 'sys_clone' [-Werror=missing-prototypes] 155 | asmlinkage int sys_clone(unsigned long __user *args) | ^~~~~~~~~ cc1: all warnings being treated as errors -- >> arch/h8300/kernel/traps.c:38:13: error: no previous prototype for 'base_trap_init' [-Werror=missing-prototypes] 38 | void __init base_trap_init(void) | ^~~~~~~~~~~~~~ arch/h8300/kernel/traps.c:42:13: error: no previous prototype for 'trap_init' [-Werror=missing-prototypes] 42 | void __init trap_init(void) | ^~~~~~~~~ >> arch/h8300/kernel/traps.c:46:17: error: no previous prototype for 'set_esp0' [-Werror=missing-prototypes] 46 | asmlinkage void set_esp0(unsigned long ssp) | ^~~~~~~~ cc1: all warnings being treated as errors -- >> arch/h8300/kernel/ptrace.c:172:17: error: no previous prototype for 'do_syscall_trace_enter' [-Werror=missing-prototypes] 172 | asmlinkage long do_syscall_trace_enter(struct pt_regs *regs) | ^~~~~~~~~~~~~~~~~~~~~~ >> arch/h8300/kernel/ptrace.c:191:17: error: no previous prototype for 'do_syscall_trace_leave' [-Werror=missing-prototypes] 191 | asmlinkage void do_syscall_trace_leave(struct pt_regs *regs) | ^~~~~~~~~~~~~~~~~~~~~~ arch/h8300/kernel/ptrace.c: In function 'h8300_put_reg': >> arch/h8300/kernel/ptrace.c:61:34: error: this statement may fall through [-Werror=implicit-fallthrough=] 61 | task->thread.usp = data - sizeof(long)*2; | ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~ arch/h8300/kernel/ptrace.c:62:9: note: here 62 | case PT_CCR: | ^~~~ cc1: all warnings being treated as errors -- >> arch/h8300/kernel/signal.c:105:16: error: no previous prototype for 'sys_rt_sigreturn' [-Werror=missing-prototypes] 105 | asmlinkage int sys_rt_sigreturn(void) | ^~~~~~~~~~~~~~~~ >> arch/h8300/kernel/signal.c:280:17: error: no previous prototype for 'do_notify_resume' [-Werror=missing-prototypes] 280 | asmlinkage void do_notify_resume(struct pt_regs *regs, u32 thread_info_flags) | ^~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors -- >> arch/h8300/kernel/setup.c:59:13: error: no previous prototype for 'h8300_fdt_init' [-Werror=missing-prototypes] 59 | void __init h8300_fdt_init(void *fdt, char *bootargs) | ^~~~~~~~~~~~~~ >> arch/h8300/kernel/setup.c:209:13: error: no previous prototype for 'time_init' [-Werror=missing-prototypes] 209 | void __init time_init(void) | ^~~~~~~~~ cc1: all warnings being treated as errors -- >> arch/h8300/kernel/irq.c:87:13: error: no previous prototype for 'init_IRQ' [-Werror=missing-prototypes] 87 | void __init init_IRQ(void) | ^~~~~~~~ >> arch/h8300/kernel/irq.c:93:17: error: no previous prototype for 'do_IRQ' [-Werror=missing-prototypes] 93 | asmlinkage void do_IRQ(int irq) | ^~~~~~ cc1: all warnings being treated as errors -- >> arch/h8300/kernel/ptrace_s.c:21:6: error: no previous prototype for 'user_disable_single_step' [-Werror=missing-prototypes] 21 | void user_disable_single_step(struct task_struct *child) | ^~~~~~~~~~~~~~~~~~~~~~~~ >> arch/h8300/kernel/ptrace_s.c:31:6: error: no previous prototype for 'user_enable_single_step' [-Werror=missing-prototypes] 31 | void user_enable_single_step(struct task_struct *child) | ^~~~~~~~~~~~~~~~~~~~~~~ >> arch/h8300/kernel/ptrace_s.c:40:17: error: no previous prototype for 'trace_trap' [-Werror=missing-prototypes] 40 | asmlinkage void trace_trap(unsigned long bp) | ^~~~~~~~~~ cc1: all warnings being treated as errors -- >> arch/h8300/mm/fault.c:35:16: error: no previous prototype for 'do_page_fault' [-Werror=missing-prototypes] 35 | asmlinkage int do_page_fault(struct pt_regs *regs, unsigned long address, | ^~~~~~~~~~~~~ cc1: all warnings being treated as errors -- >> arch/h8300/lib/ashldi3.c:5:1: error: no previous prototype for '__ashldi3' [-Werror=missing-prototypes] 5 | __ashldi3(DWtype u, word_type b) | ^~~~~~~~~ cc1: all warnings being treated as errors -- >> arch/h8300/lib/ashrdi3.c:4:8: error: no previous prototype for '__ashrdi3' [-Werror=missing-prototypes] 4 | DWtype __ashrdi3(DWtype u, word_type b) | ^~~~~~~~~ cc1: all warnings being treated as errors -- >> arch/h8300/lib/lshrdi3.c:4:8: error: no previous prototype for '__lshrdi3' [-Werror=missing-prototypes] 4 | DWtype __lshrdi3(DWtype u, word_type b) | ^~~~~~~~~ cc1: all warnings being treated as errors .. vim +/arch_cpu_idle +58 arch/h8300/kernel/process.c fe54616d857da4 Yoshinori Sato 2015-05-11 54 fe54616d857da4 Yoshinori Sato 2015-05-11 55 /* fe54616d857da4 Yoshinori Sato 2015-05-11 56 * The idle loop on an H8/300.. fe54616d857da4 Yoshinori Sato 2015-05-11 57 */ fe54616d857da4 Yoshinori Sato 2015-05-11 @58 void arch_cpu_idle(void) fe54616d857da4 Yoshinori Sato 2015-05-11 59 { 58c644ba512cfb Peter Zijlstra 2020-11-20 60 raw_local_irq_enable(); fe54616d857da4 Yoshinori Sato 2015-05-11 61 __asm__("sleep"); fe54616d857da4 Yoshinori Sato 2015-05-11 62 } fe54616d857da4 Yoshinori Sato 2015-05-11 63 fe54616d857da4 Yoshinori Sato 2015-05-11 64 void machine_restart(char *__unused) fe54616d857da4 Yoshinori Sato 2015-05-11 65 { fe54616d857da4 Yoshinori Sato 2015-05-11 66 local_irq_disable(); fe54616d857da4 Yoshinori Sato 2015-05-11 67 __asm__("jmp @@0"); fe54616d857da4 Yoshinori Sato 2015-05-11 68 } fe54616d857da4 Yoshinori Sato 2015-05-11 69 fe54616d857da4 Yoshinori Sato 2015-05-11 70 void machine_halt(void) fe54616d857da4 Yoshinori Sato 2015-05-11 71 { fe54616d857da4 Yoshinori Sato 2015-05-11 72 local_irq_disable(); fe54616d857da4 Yoshinori Sato 2015-05-11 73 __asm__("sleep"); fe54616d857da4 Yoshinori Sato 2015-05-11 74 for (;;) fe54616d857da4 Yoshinori Sato 2015-05-11 75 ; fe54616d857da4 Yoshinori Sato 2015-05-11 76 } fe54616d857da4 Yoshinori Sato 2015-05-11 77 fe54616d857da4 Yoshinori Sato 2015-05-11 78 void machine_power_off(void) fe54616d857da4 Yoshinori Sato 2015-05-11 79 { fe54616d857da4 Yoshinori Sato 2015-05-11 80 local_irq_disable(); fe54616d857da4 Yoshinori Sato 2015-05-11 81 __asm__("sleep"); fe54616d857da4 Yoshinori Sato 2015-05-11 82 for (;;) fe54616d857da4 Yoshinori Sato 2015-05-11 83 ; fe54616d857da4 Yoshinori Sato 2015-05-11 84 } fe54616d857da4 Yoshinori Sato 2015-05-11 85 fe54616d857da4 Yoshinori Sato 2015-05-11 86 void show_regs(struct pt_regs *regs) fe54616d857da4 Yoshinori Sato 2015-05-11 87 { fe54616d857da4 Yoshinori Sato 2015-05-11 88 show_regs_print_info(KERN_DEFAULT); fe54616d857da4 Yoshinori Sato 2015-05-11 89 fe54616d857da4 Yoshinori Sato 2015-05-11 90 pr_notice("\n"); fe54616d857da4 Yoshinori Sato 2015-05-11 91 pr_notice("PC: %08lx Status: %02x\n", fe54616d857da4 Yoshinori Sato 2015-05-11 92 regs->pc, regs->ccr); fe54616d857da4 Yoshinori Sato 2015-05-11 93 pr_notice("ORIG_ER0: %08lx ER0: %08lx ER1: %08lx\n", fe54616d857da4 Yoshinori Sato 2015-05-11 94 regs->orig_er0, regs->er0, regs->er1); fe54616d857da4 Yoshinori Sato 2015-05-11 95 pr_notice("ER2: %08lx ER3: %08lx ER4: %08lx ER5: %08lx\n", fe54616d857da4 Yoshinori Sato 2015-05-11 96 regs->er2, regs->er3, regs->er4, regs->er5); fe54616d857da4 Yoshinori Sato 2015-05-11 97 pr_notice("ER6' %08lx ", regs->er6); fe54616d857da4 Yoshinori Sato 2015-05-11 98 if (user_mode(regs)) fe54616d857da4 Yoshinori Sato 2015-05-11 99 printk("USP: %08lx\n", rdusp()); fe54616d857da4 Yoshinori Sato 2015-05-11 100 else fe54616d857da4 Yoshinori Sato 2015-05-11 101 printk("\n"); fe54616d857da4 Yoshinori Sato 2015-05-11 102 } fe54616d857da4 Yoshinori Sato 2015-05-11 103 fe54616d857da4 Yoshinori Sato 2015-05-11 104 void flush_thread(void) fe54616d857da4 Yoshinori Sato 2015-05-11 105 { fe54616d857da4 Yoshinori Sato 2015-05-11 106 } fe54616d857da4 Yoshinori Sato 2015-05-11 107 714acdbd1c94e7 Christian Brauner 2020-06-11 108 int copy_thread(unsigned long clone_flags, unsigned long usp, 714acdbd1c94e7 Christian Brauner 2020-06-11 109 unsigned long topstk, struct task_struct *p, unsigned long tls) fe54616d857da4 Yoshinori Sato 2015-05-11 110 { fe54616d857da4 Yoshinori Sato 2015-05-11 111 struct pt_regs *childregs; fe54616d857da4 Yoshinori Sato 2015-05-11 112 fe54616d857da4 Yoshinori Sato 2015-05-11 113 childregs = (struct pt_regs *) (THREAD_SIZE + task_stack_page(p)) - 1; fe54616d857da4 Yoshinori Sato 2015-05-11 114 4727dc20e04222 Jens Axboe 2021-02-17 115 if (unlikely(p->flags & (PF_KTHREAD | PF_IO_WORKER))) { fe54616d857da4 Yoshinori Sato 2015-05-11 116 memset(childregs, 0, sizeof(struct pt_regs)); fe54616d857da4 Yoshinori Sato 2015-05-11 117 childregs->retpc = (unsigned long) ret_from_kernel_thread; fe54616d857da4 Yoshinori Sato 2015-05-11 118 childregs->er4 = topstk; /* arg */ fe54616d857da4 Yoshinori Sato 2015-05-11 119 childregs->er5 = usp; /* fn */ fe54616d857da4 Yoshinori Sato 2015-05-11 120 } else { fe54616d857da4 Yoshinori Sato 2015-05-11 121 *childregs = *current_pt_regs(); fe54616d857da4 Yoshinori Sato 2015-05-11 122 childregs->er0 = 0; fe54616d857da4 Yoshinori Sato 2015-05-11 123 childregs->retpc = (unsigned long) ret_from_fork; fe54616d857da4 Yoshinori Sato 2015-05-11 124 p->thread.usp = usp ?: rdusp(); fe54616d857da4 Yoshinori Sato 2015-05-11 125 } fe54616d857da4 Yoshinori Sato 2015-05-11 126 p->thread.ksp = (unsigned long)childregs; fe54616d857da4 Yoshinori Sato 2015-05-11 127 fe54616d857da4 Yoshinori Sato 2015-05-11 128 return 0; fe54616d857da4 Yoshinori Sato 2015-05-11 129 } fe54616d857da4 Yoshinori Sato 2015-05-11 130 fe54616d857da4 Yoshinori Sato 2015-05-11 131 unsigned long get_wchan(struct task_struct *p) fe54616d857da4 Yoshinori Sato 2015-05-11 132 { fe54616d857da4 Yoshinori Sato 2015-05-11 133 unsigned long fp, pc; fe54616d857da4 Yoshinori Sato 2015-05-11 134 unsigned long stack_page; fe54616d857da4 Yoshinori Sato 2015-05-11 135 int count = 0; fe54616d857da4 Yoshinori Sato 2015-05-11 136 b03fbd4ff24c5f Peter Zijlstra 2021-06-11 137 if (!p || p == current || task_is_running(p)) fe54616d857da4 Yoshinori Sato 2015-05-11 138 return 0; fe54616d857da4 Yoshinori Sato 2015-05-11 139 fe54616d857da4 Yoshinori Sato 2015-05-11 140 stack_page = (unsigned long)p; fe54616d857da4 Yoshinori Sato 2015-05-11 141 fp = ((struct pt_regs *)p->thread.ksp)->er6; fe54616d857da4 Yoshinori Sato 2015-05-11 142 do { fe54616d857da4 Yoshinori Sato 2015-05-11 143 if (fp < stack_page+sizeof(struct thread_info) || fe54616d857da4 Yoshinori Sato 2015-05-11 144 fp >= 8184+stack_page) fe54616d857da4 Yoshinori Sato 2015-05-11 145 return 0; fe54616d857da4 Yoshinori Sato 2015-05-11 146 pc = ((unsigned long *)fp)[1]; fe54616d857da4 Yoshinori Sato 2015-05-11 147 if (!in_sched_functions(pc)) fe54616d857da4 Yoshinori Sato 2015-05-11 148 return pc; fe54616d857da4 Yoshinori Sato 2015-05-11 149 fp = *(unsigned long *) fp; fe54616d857da4 Yoshinori Sato 2015-05-11 150 } while (count++ < 16); fe54616d857da4 Yoshinori Sato 2015-05-11 151 return 0; fe54616d857da4 Yoshinori Sato 2015-05-11 152 } fe54616d857da4 Yoshinori Sato 2015-05-11 153 fe54616d857da4 Yoshinori Sato 2015-05-11 154 /* generic sys_clone is not enough registers */ fe54616d857da4 Yoshinori Sato 2015-05-11 @155 asmlinkage int sys_clone(unsigned long __user *args) :::::: The code at line 58 was first introduced by commit :::::: fe54616d857da4ccb482eb40fef0e0f3b3d0efaf h8300: process helpers :::::: TO: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx> :::::: CC: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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