sys_recv          421 include/linux/syscalls.h asmlinkage long sys_recv(int, void __user *, size_t, unsigned);
sys_recv          825 net/compat.c   		ret = sys_recv(a0, compat_ptr(a1), a[2], a[3]);
sys_recv         2172 net/socket.c   		err = sys_recv(a0, (void __user *)a1, a[2], a[3]);