fa1e27fe8e fuzz: Generate rpc fuzz targets individually (MarcoFalke)
Pull request description:
The `rpc` fuzz target was added more than two years ago in e45863166f. However, the bug https://github.com/bitcoin/bitcoin/issues/27913 was only found recently. Thus, it is pretty clear that fuzz engines can't deal with a search space that is too broad and can be extended in too many directions.
Fix that by limiting the search space to each RPC method name and then iterate over all names, instead of letting the fuzz engine do the iteration.
With this, the bug can be found in seconds, as opposed to years of CPU time (or never).
ACKs for top commit:
brunoerg:
ACK fa1e27fe8e
dergoegge:
ACK fa1e27fe8e
Tree-SHA512: 45ccba842367650d010320603153276b1b303deda9ba8c6bb31a4d2473b00aa5bca866db95f541485d65efd8276e2575026968c037872ef344fa33cf45bcdcd7
Also, fix a few bugs:
* Error: RPC command "enumeratesigners" not found in RPC_COMMANDS_SAFE_FOR_FUZZING or RPC_COMMANDS_NOT_SAFE_FOR_FUZZING. Please update test/fuzz/rpc.cpp.
* in run_once: ...format(" ".join(result.args), ... TypeError: sequence item 2: expected str instance, PosixPath found
The previous diff touched most files in ./test/, so bump the headers to
avoid having to touch them again for a bump later.
-BEGIN VERIFY SCRIPT-
./contrib/devtools/copyright_header.py update ./test/
-END VERIFY SCRIPT-
fabeb5b9c7 fuzz: Disable shuffle when merge=1 (MarcoFalke)
Pull request description:
This should hopefully help make the deletion of fuzz inputs more deterministic.
My tests (N=1) revealed that without this patch 7000 files differ (https://github.com/bitcoin-core/qa-assets/pull/44#issuecomment-768841467). With this patch, "only" 2000 files differ.
ACKs for top commit:
practicalswift:
cr ACK fabeb5b9c7f678ab3bc24c1860f8514ac52bb56f: `-shuffle=0` and `-prefer_small=1` make sense
Tree-SHA512: 21a701f52450d402a91dd6e0b33d564c63a9c3b919738eb9a80c24d48fc5b964088e325470738f39af0d595612c844acc7bf0941590cc2dc8c6f6ee4cb69c861
fa3fa27c45 fuzz: Remove option --export_coverage from test_runner (MarcoFalke)
aaaa055ff7 fuzz: Add option to merge input dir to test runner (MarcoFalke)
fa4fa88d76 doc: Remove --disable-ccache from docs (MarcoFalke)
Pull request description:
This is mainly useful for myself to merge pull requests like https://github.com/bitcoin-core/qa-assets/pull/4
I thought it wouldn't hurt to share the code.
Also remove the `--disable-ccache` from the docs to speed up builds when developing fuzzers.
Top commit has no ACKs.
Tree-SHA512: 818d85a90db86a7f4e8b001cc88342e5b28b02029d2bd4174440b28a8c4cc29b5406bd6348f72ddf909bb3d0f9bf7b1011976f6480e4418c8b7da5ecccae93e8
9ff41f6419 tests: Add float to FUZZERS_MISSING_CORPORA (temporarily) (practicalswift)
8f6fb0a85a tests: Add serialization/deserialization fuzzing for integral types (practicalswift)
3c82b92d2e tests: Add fuzzing harness for functions taking floating-point types as input (practicalswift)
c2bd588860 Add missing includes (practicalswift)
Pull request description:
Add simple fuzzing harness for functions with floating-point parameters (such as `ser_double_to_uint64(double)`, etc.).
Add serialization/deserialization fuzzing for integral types.
Add missing includes.
To test this PR:
```
$ make distclean
$ ./autogen.sh
$ CC=clang CXX=clang++ ./configure --enable-fuzz \
--with-sanitizers=address,fuzzer,undefined
$ make
$ src/test/fuzz/float
…
```
Top commit has no ACKs.
Tree-SHA512: 9b5a0c4838ad18d715c7398e557d2a6d0fcc03aa842f76d7a8ed716170a28f17f249eaede4256998aa3417afe2935e0ffdfaa883727d71ae2d2d18a41ced24b5
597d10ceb9 tests: Add fuzzing harness for various functions consuming only integrals (practicalswift)
575383b3e1 tests: Add corpora suppression (FUZZERS_MISSING_CORPORA) for fuzzers missing in https://github.com/bitcoin-core/qa-assets/tree/master/fuzz_seed_corpus (practicalswift)
Pull request description:
Add fuzzing harness for various functions consuming only integrals.
**Testing this PR**
Run:
```
$ CC=clang CXX=clang++ ./configure --enable-fuzz \
--with-sanitizers=address,fuzzer,undefined
$ make
$ src/test/fuzz/integer
```
Top commit has no ACKs.
Tree-SHA512: f0ccbd63671636f8e661385b682e16ad287fef8f92e7f91327ee2093afc36fcd424e1646fe90279388e28a760bcc795766eb80cf6375e0f873efff37fc7e2393
MarcoFalke