tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 56585460cc2ec44fc5d66924f0a116f57080f0dc commit: 2888e8718e96bc7c4261da90b5967ae0c4dcb320 [13043/13390] LoongArch: Add basic KGDB & KDB support config: loongarch-allnoconfig (https://download.01.org/0day-ci/archive/20230830/202308301605.1sXs81Sf-lkp@xxxxxxxxx/config) compiler: loongarch64-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230830/202308301605.1sXs81Sf-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/202308301605.1sXs81Sf-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): arch/loongarch/kernel/traps.c:373:6: warning: no previous prototype for 'show_registers' [-Wmissing-prototypes] 373 | void show_registers(struct pt_regs *regs) | ^~~~~~~~~~~~~~ arch/loongarch/kernel/traps.c:441:6: warning: no previous prototype for 'force_fcsr_sig' [-Wmissing-prototypes] 441 | void force_fcsr_sig(unsigned long fcsr, void __user *fault_addr, | ^~~~~~~~~~~~~~ arch/loongarch/kernel/traps.c:460:5: warning: no previous prototype for 'process_fpemu_return' [-Wmissing-prototypes] 460 | int process_fpemu_return(int sig, void __user *fault_addr, unsigned long fcsr) | ^~~~~~~~~~~~~~~~~~~~ arch/loongarch/kernel/traps.c:495:25: warning: no previous prototype for 'do_fpe' [-Wmissing-prototypes] 495 | asmlinkage void noinstr do_fpe(struct pt_regs *regs, unsigned long fcsr) | ^~~~~~ arch/loongarch/kernel/traps.c:522:25: warning: no previous prototype for 'do_ade' [-Wmissing-prototypes] 522 | asmlinkage void noinstr do_ade(struct pt_regs *regs) | ^~~~~~ arch/loongarch/kernel/traps.c:536:25: warning: no previous prototype for 'do_ale' [-Wmissing-prototypes] 536 | asmlinkage void noinstr do_ale(struct pt_regs *regs) | ^~~~~~ arch/loongarch/kernel/traps.c:597:25: warning: no previous prototype for 'do_bce' [-Wmissing-prototypes] 597 | asmlinkage void noinstr do_bce(struct pt_regs *regs) | ^~~~~~ arch/loongarch/kernel/traps.c:686:25: warning: no previous prototype for 'do_bp' [-Wmissing-prototypes] 686 | asmlinkage void noinstr do_bp(struct pt_regs *regs) | ^~~~~ arch/loongarch/kernel/traps.c: In function 'do_bp': >> arch/loongarch/kernel/traps.c:707:21: error: implicit declaration of function 'kgdb_breakpoint_handler'; did you mean 'kprobe_breakpoint_handler'? [-Werror=implicit-function-declaration] 707 | if (kgdb_breakpoint_handler(regs)) | ^~~~~~~~~~~~~~~~~~~~~~~ | kprobe_breakpoint_handler arch/loongarch/kernel/traps.c: At top level: arch/loongarch/kernel/traps.c:770:25: warning: no previous prototype for 'do_watch' [-Wmissing-prototypes] 770 | asmlinkage void noinstr do_watch(struct pt_regs *regs) | ^~~~~~~~ arch/loongarch/kernel/traps.c:823:25: warning: no previous prototype for 'do_ri' [-Wmissing-prototypes] 823 | asmlinkage void noinstr do_ri(struct pt_regs *regs) | ^~~~~ arch/loongarch/kernel/traps.c: In function 'do_ri': arch/loongarch/kernel/traps.c:826:22: warning: variable 'opcode' set but not used [-Wunused-but-set-variable] 826 | unsigned int opcode = 0; | ^~~~~~ arch/loongarch/kernel/traps.c: At top level: arch/loongarch/kernel/traps.c:918:25: warning: no previous prototype for 'do_fpu' [-Wmissing-prototypes] 918 | asmlinkage void noinstr do_fpu(struct pt_regs *regs) | ^~~~~~ arch/loongarch/kernel/traps.c:935:25: warning: no previous prototype for 'do_lsx' [-Wmissing-prototypes] 935 | asmlinkage void noinstr do_lsx(struct pt_regs *regs) | ^~~~~~ arch/loongarch/kernel/traps.c:957:25: warning: no previous prototype for 'do_lasx' [-Wmissing-prototypes] 957 | asmlinkage void noinstr do_lasx(struct pt_regs *regs) | ^~~~~~~ arch/loongarch/kernel/traps.c:992:25: warning: no previous prototype for 'do_lbt' [-Wmissing-prototypes] 992 | asmlinkage void noinstr do_lbt(struct pt_regs *regs) | ^~~~~~ arch/loongarch/kernel/traps.c:1023:25: warning: no previous prototype for 'do_reserved' [-Wmissing-prototypes] 1023 | asmlinkage void noinstr do_reserved(struct pt_regs *regs) | ^~~~~~~~~~~ arch/loongarch/kernel/traps.c:1042:17: warning: no previous prototype for 'cache_parity_error' [-Wmissing-prototypes] 1042 | asmlinkage void cache_parity_error(void) | ^~~~~~~~~~~~~~~~~~ arch/loongarch/kernel/traps.c:1051:25: warning: no previous prototype for 'handle_loongarch_irq' [-Wmissing-prototypes] 1051 | asmlinkage void noinstr handle_loongarch_irq(struct pt_regs *regs) | ^~~~~~~~~~~~~~~~~~~~ arch/loongarch/kernel/traps.c:1062:25: warning: no previous prototype for 'do_vint' [-Wmissing-prototypes] 1062 | asmlinkage void noinstr do_vint(struct pt_regs *regs, unsigned long sp) | ^~~~~~~ cc1: some warnings being treated as errors vim +707 arch/loongarch/kernel/traps.c 685 686 asmlinkage void noinstr do_bp(struct pt_regs *regs) 687 { 688 bool user = user_mode(regs); 689 unsigned int opcode, bcode; 690 unsigned long era = exception_era(regs); 691 irqentry_state_t state = irqentry_enter(regs); 692 693 if (regs->csr_prmd & CSR_PRMD_PIE) 694 local_irq_enable(); 695 696 if (__get_inst(&opcode, (u32 *)era, user)) 697 goto out_sigsegv; 698 699 bcode = (opcode & 0x7fff); 700 701 /* 702 * notify the kprobe handlers, if instruction is likely to 703 * pertain to them. 704 */ 705 switch (bcode) { 706 case BRK_KDB: > 707 if (kgdb_breakpoint_handler(regs)) 708 goto out; 709 else 710 break; 711 case BRK_KPROBE_BP: 712 if (kprobe_breakpoint_handler(regs)) 713 goto out; 714 else 715 break; 716 case BRK_KPROBE_SSTEPBP: 717 if (kprobe_singlestep_handler(regs)) 718 goto out; 719 else 720 break; 721 case BRK_UPROBE_BP: 722 if (uprobe_breakpoint_handler(regs)) 723 goto out; 724 else 725 break; 726 case BRK_UPROBE_XOLBP: 727 if (uprobe_singlestep_handler(regs)) 728 goto out; 729 else 730 break; 731 default: 732 current->thread.trap_nr = read_csr_excode(); 733 if (notify_die(DIE_TRAP, "Break", regs, bcode, 734 current->thread.trap_nr, SIGTRAP) == NOTIFY_STOP) 735 goto out; 736 else 737 break; 738 } 739 740 switch (bcode) { 741 case BRK_BUG: 742 bug_handler(regs); 743 break; 744 case BRK_DIVZERO: 745 die_if_kernel("Break instruction in kernel code", regs); 746 force_sig_fault(SIGFPE, FPE_INTDIV, (void __user *)regs->csr_era); 747 break; 748 case BRK_OVERFLOW: 749 die_if_kernel("Break instruction in kernel code", regs); 750 force_sig_fault(SIGFPE, FPE_INTOVF, (void __user *)regs->csr_era); 751 break; 752 default: 753 die_if_kernel("Break instruction in kernel code", regs); 754 force_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->csr_era); 755 break; 756 } 757 758 out: 759 if (regs->csr_prmd & CSR_PRMD_PIE) 760 local_irq_disable(); 761 762 irqentry_exit(regs, state); 763 return; 764 765 out_sigsegv: 766 force_sig(SIGSEGV); 767 goto out; 768 } 769 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
