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googleprojectzero / winafl

A fork of AFL for fuzzing Windows binaries
Apache License 2.0
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Incorrect detection count threads on multiCPU motherboards #428

Open GermanAizek opened 10 months ago

GermanAizek commented 10 months ago

@ifratric, on Windows any version, count threads is incorrectly detected. In my case, I have motherboard with two sockets 18 cores and 36 threads, he determined count threads for only one processor.

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GermanAizek commented 10 months ago

Similar issues and my PRs with C++ fixes here: https://github.com/git-for-windows/git/issues/4766

ifratric commented 10 months ago

Thanks for reporting! Looks like how we compute cpu_core_count (https://github.com/googleprojectzero/winafl/blob/master/afl-fuzz.c#L7821) would need to change. And I'm not currently sure if bind_to_free_cpu (https://github.com/googleprojectzero/winafl/blob/master/afl-fuzz.c#L475) would also need to be changed. In any case, a PR would be highly appreciated :)