compat_sys_sigprocmask  266 arch/arm64/include/asm/unistd32.h __SYSCALL(__NR_sigprocmask, compat_sys_sigprocmask)
compat_sys_sigprocmask  905 include/linux/compat.h asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *nset,