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Invisible Probe: Timing Attacks with PCIe Congestion Side-channel

Introduction

Our paper is published on Oakland 21 S&P and the presentation slides are here.

Probe

RDMA Probe

Please make sure that you have connected two machines with Infiniband NIC and installed the drivers. The client and server can access each other.

client:
make
./rdma_probe <server_ip>

server:
make
./rdma_probe

The client will generate the log file.

NVMe Probe

Firstly, you need to install SPDK and make sure you can run the "hello world" example. Please see the offcial getting started.

Then put directory "nvme_probe" in the same directory "spdk". Type make and run the executable "nvmeProbe".( our probe is modified from the official "hello world" example.)

cd nvme_probe
make
sudo ./nvmeProbe

Io_uring Probe

SPDK doesn't support devices like ESSD on Alibaba Cloud. So we use io_uring instead of it, which is supported since Linux 5.X.

Collect probe traces

Use Google Chrome headless mode to access the web pages and collect the probe trace at the same time, and here is an easy demo.

Show the traces

Interpret the logs and show the with matplotlib. The two easy scripts could show the data collected by rdma_probe and NVMe probe(io_uring probe is the same with nvme probe).