Coverage Issue

[bjloed]

Hi, first of all, I think your research on hAFL2 is really impressive. Great work. However, I have a question.
I am wondering if the issue with coverage collection could be related to using an Intel Desktop CPU.

Following the manual, three of us attempted to set up both hAFL1 and hAFL2, but all failed to collect coverage. (All three of us used 13th-generation or higher Intel i7/i9 Desktop CPUs, which support Intel-PT, and coverage collection worked fine with kAFL v0.2.)

After multiple attempts, I decided to rent a bare-metal server with a Xeon E-2388G (Rocket Lake) CPU.

On that server, I was able to collect coverage with hAFL1, but the issue persisted with hAFL2, where coverage could not be collected.
Is there any difference in how Desktop CPUs and Xeon CPUs handle Intel-PT?

I’ve been trying to set this up for over a month but still cannot collect coverage. Also, when I print is_root_partition, it keeps returning a value of 1. Is this normal?