Redis [BUG] Protocol error in redis-benchmark

Describe the bug

A protocol error happens when running redis-benchmark.

To reproduce

Run the redis server with the default configuration and verbose logging. Run redis-benchmark -P 1 -t set -n 1 -c 1 -d 50000000

Expected behavior

The benchmark should finish without errors.

Additional information

I'm using Ubuntu 20.04 LTS in a VM. I built redis from the 6.2.6 branch with SSL/TLS.