Commit Graph

13 Commits

Author SHA1 Message Date
Kostya Serebryany
ebada2c2bc [lib/Fuzzer] extend the fuzzer interface to allow user-supplied mutators
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238059 91177308-0d34-0410-b5e6-96231b3b80d8
2015-05-22 22:35:31 +00:00
Kostya Serebryany
6f1b9541ba [lib/Fuzzer] Add SHA1 implementation from public domain.
Summary:
This adds a SHA1 implementation taken from public domain code.
The change is trivial, but as it involves third-party code I'd like
a second pair of eyes before commit.

LibFuzzer can not use SHA1 from openssl because openssl may not be available
and because we may be fuzzing openssl itself.
Using sha1sum via a pipe is too slow.

Test Plan: n/a

Reviewers: chandlerc

Reviewed By: chandlerc

Subscribers: majnemer, llvm-commits

Differential Revision: http://reviews.llvm.org/D9733

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237400 91177308-0d34-0410-b5e6-96231b3b80d8
2015-05-14 22:41:49 +00:00
Kostya Serebryany
051ef86497 [lib/Fuzzer] rename FuzzerDFSan.cpp to FuzzerTraceState.cpp; update comments. NFC expected
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237050 91177308-0d34-0410-b5e6-96231b3b80d8
2015-05-11 21:16:27 +00:00
Aaron Ballman
1f1fecb823 Removing a spurious space; NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234168 91177308-0d34-0410-b5e6-96231b3b80d8
2015-04-06 16:09:13 +00:00
Kostya Serebryany
29c6bd6e4f DFSan-based fuzzer (proof of concept).
Summary:
This adds a simple DFSan-based (i.e. taint-guided) fuzzer mutator,
see the comments for details.

Test Plan: a test added

Reviewers: samsonov, pcc

Reviewed By: samsonov, pcc

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D8669

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233613 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-30 22:09:51 +00:00
Kostya Serebryany
ce7a848558 [fuzzer] split main() into FuzzerDriver() that takes a callback as a parameter and a tiny main() in a separate file
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229882 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-19 18:45:37 +00:00
Kostya Serebryany
9b13b8c338 [fuzzer] move default sanitizer options to a separate file
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228429 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-06 19:52:07 +00:00
Kostya Serebryany
05efde62f5 [fuzzer] Add a gtest-style test
Summary: Add one gtest-style test.

Test Plan: run on bot

Reviewers: samsonov

Reviewed By: samsonov

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D7287

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227639 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-30 23:26:57 +00:00
Kostya Serebryany
4ac4c33f2d [fuzzer] add -use_full_coverage_set=1 which solves FullCoverageSetTest. This does not scale very well yet, but might be a good start.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227507 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-29 23:01:07 +00:00
Aaron Ballman
94879c0134 Reverting r227452, which adds back the fuzzer library. Now excluding the fuzzer library based on LLVM_USE_SANITIZE_COVERAGE being set or unset.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227464 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-29 16:58:29 +00:00
Aaron Ballman
f316f2ea52 Temporarily reverting the fuzzer library as it causes too many build issues for MSVC users. This reverts: 227445, 227395, 227389, 227357, 227254, 227252
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227452 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-29 15:49:22 +00:00
Kostya Serebryany
408796c672 Add lit-style tests for the Fuzzer library
Summary: Add test targets and the lit-style runner.

Test Plan: Run the tests on bot.

Reviewers: samsonov

Reviewed By: samsonov

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D7217

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227389 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-28 22:49:25 +00:00
Kostya Serebryany
c9baf3befb Add a Fuzzer library
Summary:
A simple genetic in-process coverage-guided fuzz testing library.

I've used this fuzzer to test clang-format
(it found 12+ bugs, thanks djasper@ for the fixes!)
and it may also help us test other parts of LLVM.
So why not keep it in the LLVM repository?

I plan to add the cmake build rules later (in a separate patch, if that's ok)
and also add a clang-format-fuzzer target.

See README.txt for details.

Test Plan: Tests will follow separately.

Reviewers: djasper, chandlerc, rnk

Reviewed By: rnk

Subscribers: majnemer, ygribov, dblaikie, llvm-commits

Differential Revision: http://reviews.llvm.org/D7184

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227252 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-27 22:08:41 +00:00