Hi Elvira, Thank you for the patch! Yet something to improve:
[auto build test ERROR on linus/master] [also build test ERROR on v4.20-rc6] [cannot apply to next-20181211] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Dmitry-V-Levin/ptrace-add-PTRACE_GET_SYSCALL_INFO-request/20181210-174745 config: nds32-allmodconfig (attached as .config) compiler: nds32le-linux-gcc (GCC) 6.4.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=6.4.0 make.cross ARCH=nds32 All errors (new ones prefixed by >>): kernel/ptrace.c: In function 'ptrace_get_syscall_info': >> kernel/ptrace.c:942:20: error: implicit declaration of function >> 'frame_pointer' [-Werror=implicit-function-declaration] .frame_pointer = frame_pointer(regs) ^~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/frame_pointer +942 kernel/ptrace.c 931 932 static int 933 ptrace_get_syscall_info(struct task_struct *child, unsigned long user_size, 934 void __user *datavp) 935 { 936 struct pt_regs *regs = task_pt_regs(child); 937 struct ptrace_syscall_info info = { 938 .op = PTRACE_SYSCALL_INFO_NONE, 939 .arch = syscall_get_arch(child), 940 .instruction_pointer = instruction_pointer(regs), 941 .stack_pointer = user_stack_pointer(regs), > 942 .frame_pointer = frame_pointer(regs) 943 }; 944 unsigned long actual_size = offsetof(struct ptrace_syscall_info, entry); 945 unsigned long write_size; 946 947 /* 948 * This does not need lock_task_sighand() to access 949 * child->last_siginfo because ptrace_freeze_traced() 950 * called earlier by ptrace_check_attach() ensures that 951 * the tracee cannot go away and clear its last_siginfo. 952 */ 953 switch (child->last_siginfo ? child->last_siginfo->si_code : 0) { 954 case SIGTRAP | 0x80: 955 switch (child->ptrace_message) { 956 case PTRACE_EVENTMSG_SYSCALL_ENTRY: 957 actual_size = ptrace_get_syscall_info_entry(child, regs, 958 &info); 959 break; 960 case PTRACE_EVENTMSG_SYSCALL_EXIT: 961 actual_size = ptrace_get_syscall_info_exit(child, regs, 962 &info); 963 break; 964 } 965 break; 966 case SIGTRAP | (PTRACE_EVENT_SECCOMP << 8): 967 actual_size = ptrace_get_syscall_info_seccomp(child, regs, 968 &info); 969 break; 970 } 971 972 write_size = min(actual_size, user_size); 973 return copy_to_user(datavp, &info, write_size) ? -EFAULT : actual_size; 974 } 975 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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