chore(fuzzing): extend syscall whitelist in sandbox fuzzers #3659
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In the sandbox monitor function, the parent thread calls
std::thread::sleep(std::time::Duration::from_secs(1))
to allow the sandbox to spawn all its threads before tracing begins.However, this approach is unreliable—the sleep duration is arbitrary, and attachment can occur at any point in execution. This led to
getrandom
failures in CI.This PR removes the sleep timer and instead continuously fetches
tid
s as threads spawn, attaching to them dynamically. The trade-off is that it requires knowing the number of sandbox threads in advance.