__NR_recvmsg
res = stub_syscall3(__NR_recvmsg, 0, (unsigned long)&msghdr, 0);
BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K,__NR_recvmsg,
__SC_COMP(__NR_recvmsg, sys_recvmsg, compat_sys_recvmsg)
__SC_COMP(__NR_recvmsg, sys_recvmsg, compat_sys_recvmsg)