Messages in this thread | | | Date | Sat, 26 Aug 2017 22:55:22 +0800 | From | kbuild test robot <> | Subject | [tip:WIP.x86/apic 37/46] arch/x86/kernel/traps.c:892:1: error: 'xo' undeclared |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.x86/apic head: 6acaab8814cf6c7f77c1ee2e1ed266509573d5b4 commit: 8f1d566bc1f0f6e055a46728bfd906dd74a3f74c [37/46] x86/idt: Switch early trap init to IDT tables config: x86_64-allmodconfig (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: git checkout 8f1d566bc1f0f6e055a46728bfd906dd74a3f74c # save the attached .config to linux build tree make ARCH=x86_64
All error/warnings (new ones prefixed by >>):
arch/x86/kernel/traps.c: In function 'do_device_not_available': >> arch/x86/kernel/traps.c:892:1: error: 'xo' undeclared (first use in this function) xo if (WARN(cr0 & X86_CR0_TS, "CR0.TS was set")) { ^~ arch/x86/kernel/traps.c:892:1: note: each undeclared identifier is reported only once for each function it appears in >> arch/x86/kernel/traps.c:892:4: error: expected ';' before 'if' xo if (WARN(cr0 & X86_CR0_TS, "CR0.TS was set")) { ^~ arch/x86/kernel/traps.c: At top level: >> arch/x86/kernel/traps.c:926:1: warning: data definition has no type or storage class xovoid __init trap_init(void) ^~~~~~ >> arch/x86/kernel/traps.c:926:1: error: type defaults to 'int' in declaration of 'xovoid' [-Werror=implicit-int] >> arch/x86/kernel/traps.c:926:1: warning: '__cold__' attribute ignored [-Wattributes] >> arch/x86/kernel/traps.c:926:15: error: expected ',' or ';' before 'trap_init' xovoid __init trap_init(void) ^~~~~~~~~ cc1: some warnings being treated as errors
vim +/xo +892 arch/x86/kernel/traps.c
889 890 /* This should not happen. */ 891 cr0 = read_cr0(); > 892 xo if (WARN(cr0 & X86_CR0_TS, "CR0.TS was set")) { 893 /* Try to fix it up and carry on. */ 894 write_cr0(cr0 & ~X86_CR0_TS); 895 } else { 896 /* 897 * Something terrible happened, and we're better off trying 898 * to kill the task than getting stuck in a never-ending 899 * loop of #NM faults. 900 */ 901 die("unexpected #NM exception", regs, error_code); 902 } 903 } 904 NOKPROBE_SYMBOL(do_device_not_available); 905 906 #ifdef CONFIG_X86_32 907 dotraplinkage void do_iret_error(struct pt_regs *regs, long error_code) 908 { 909 siginfo_t info; 910 911 RCU_LOCKDEP_WARN(!rcu_is_watching(), "entry code didn't wake RCU"); 912 local_irq_enable(); 913 914 info.si_signo = SIGILL; 915 info.si_errno = 0; 916 info.si_code = ILL_BADSTK; 917 info.si_addr = NULL; 918 if (notify_die(DIE_TRAP, "iret exception", regs, error_code, 919 X86_TRAP_IRET, SIGILL) != NOTIFY_STOP) { 920 do_trap(X86_TRAP_IRET, SIGILL, "iret exception", regs, error_code, 921 &info); 922 } 923 } 924 #endif 925 > 926 xovoid __init trap_init(void) 927 { 928 int i; 929 930 set_intr_gate(X86_TRAP_DE, divide_error); 931 set_intr_gate_ist(X86_TRAP_NMI, &nmi, NMI_STACK); 932 /* int4 can be called from all */ 933 set_system_intr_gate(X86_TRAP_OF, &overflow); 934 set_intr_gate(X86_TRAP_BR, bounds); 935 set_intr_gate(X86_TRAP_UD, invalid_op); 936 set_intr_gate(X86_TRAP_NM, device_not_available); 937 #ifdef CONFIG_X86_32 938 set_task_gate(X86_TRAP_DF, GDT_ENTRY_DOUBLEFAULT_TSS); 939 #else 940 set_intr_gate_ist(X86_TRAP_DF, &double_fault, DOUBLEFAULT_STACK); 941 #endif 942 set_intr_gate(X86_TRAP_OLD_MF, coprocessor_segment_overrun); 943 set_intr_gate(X86_TRAP_TS, invalid_TSS); 944 set_intr_gate(X86_TRAP_NP, segment_not_present); 945 set_intr_gate(X86_TRAP_SS, stack_segment); 946 set_intr_gate(X86_TRAP_GP, general_protection); 947 set_intr_gate(X86_TRAP_SPURIOUS, spurious_interrupt_bug); 948 set_intr_gate(X86_TRAP_MF, coprocessor_error); 949 set_intr_gate(X86_TRAP_AC, alignment_check); 950 #ifdef CONFIG_X86_MCE 951 set_intr_gate_ist(X86_TRAP_MC, &machine_check, MCE_STACK); 952 #endif 953 set_intr_gate(X86_TRAP_XF, simd_coprocessor_error); 954 955 /* Reserve all the builtin and the syscall vector: */ 956 for (i = 0; i < FIRST_EXTERNAL_VECTOR; i++) 957 set_bit(i, used_vectors); 958
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