Skip to content

p2p: Lazy init some bloom filters; fuzz version handshake

Placeholder Niklas Gögge requested to merge github/fork/dergoegge/2024-07-fuzz-handshake into master

This adds a fuzzing harness dedicated to the version handshake. To avoid determinism issues, the harness creates necessary components each iteration (addrman, peerman, etc). A harness like this would have easily caught https://bitcoincore.org/en/2024/07/03/disclose-timestamp-overflow/.

As a performance optimization, this PR includes a change to PeerManager to lazily initialize various filters (to avoid large unnecessary memory allocations each iteration).

Merge request reports