Hi Dmitry, kernel test robot noticed the following build errors: [auto build test ERROR on openrisc/for-next] [also build test ERROR on powerpc/next powerpc/fixes s390/features uml/next jcmvbkbc-xtensa/xtensa-for-next arnd-asm-generic/master vgupta-arc/for-curr arm64/for-next/core linus/master uml/fixes tip/x86/core vgupta-arc/for-next v6.13-rc6 next-20250108] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Dmitry-V-Levin/Revert-arch-remove-unused-function-syscall_set_arguments/20250108-070658 base: https://github.com/openrisc/linux.git for-next patch link: https://lore.kernel.org/r/20250107230456.GE30633%40strace.io patch subject: [PATCH 5/6] ptrace: introduce PTRACE_SET_SYSCALL_INFO request config: hexagon-allnoconfig (https://download.01.org/0day-ci/archive/20250109/202501090919.TiLTOhaq-lkp@xxxxxxxxx/config) compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 096551537b2a747a3387726ca618ceeb3950e9bc) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250109/202501090919.TiLTOhaq-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/202501090919.TiLTOhaq-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> kernel/ptrace.c:1053:3: error: call to undeclared function 'syscall_set_return_value'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 1053 | syscall_set_return_value(child, regs, -ENOSYS, 0); | ^ kernel/ptrace.c:1053:3: note: did you mean 'syscall_get_return_value'? arch/hexagon/include/asm/syscall.h:56:20: note: 'syscall_get_return_value' declared here 56 | static inline long syscall_get_return_value(struct task_struct *task, | ^ kernel/ptrace.c:1075:3: error: call to undeclared function 'syscall_set_return_value'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 1075 | syscall_set_return_value(child, regs, info->exit.rval, 0); | ^ 2 errors generated. vim +/syscall_set_return_value +1053 kernel/ptrace.c 1021 1022 static unsigned long 1023 ptrace_set_syscall_info_entry(struct task_struct *child, struct pt_regs *regs, 1024 struct ptrace_syscall_info *info) 1025 { 1026 unsigned long args[ARRAY_SIZE(info->entry.args)]; 1027 int nr = info->entry.nr; 1028 int i; 1029 1030 if (nr != info->entry.nr) 1031 return -ERANGE; 1032 1033 for (i = 0; i < ARRAY_SIZE(args); i++) { 1034 args[i] = info->entry.args[i]; 1035 if (args[i] != info->entry.args[i]) 1036 return -ERANGE; 1037 } 1038 1039 syscall_set_nr(child, regs, nr); 1040 syscall_set_arguments(child, regs, args); 1041 if (nr == -1) { 1042 /* 1043 * When the syscall number is set to -1, the syscall will be 1044 * skipped. In this case also set the syscall return value to 1045 * -ENOSYS, otherwise on some architectures the corresponding 1046 * struct pt_regs field will remain unchanged. 1047 * 1048 * Note that on some architectures syscall_set_return_value() 1049 * modifies one of the struct pt_regs fields also modified by 1050 * syscall_set_arguments(), so the former should be called 1051 * after the latter. 1052 */ > 1053 syscall_set_return_value(child, regs, -ENOSYS, 0); 1054 } 1055 1056 return 0; 1057 } 1058 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
