Kostya Serebryany
0cdb698aae
[lib/Fuzzer] add a trace-based mutatation logic. Same idea as with DFSan-based mutator, but instead of relying on taint tracking, try to find the data directly in the input. More (logic and comments) to go.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237043 91177308-0d34-0410-b5e6-96231b3b80d8
2015-05-11 20:51:19 +00:00
Alexey Samsonov
8227e6a8b4
Update CMake flags, LibFuzzer comments and docs for new -fsanitize-coverage= flags.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236797 91177308-0d34-0410-b5e6-96231b3b80d8
2015-05-07 23:33:24 +00:00
Kostya Serebryany
6564ee8933
[lib/Fuzzer] change the way we use taint information for fuzzing. Now, we run a single unit and collect suggested mutations based on tracing+taint data, then apply the suggested mutations one by one. The previous scheme was slower and more complex.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236772 91177308-0d34-0410-b5e6-96231b3b80d8
2015-05-07 21:02:11 +00:00
Kostya Serebryany
46fa0aabcb
[lib/Fuzzer] minor refactoring/simplification, NFC
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236757 91177308-0d34-0410-b5e6-96231b3b80d8
2015-05-07 18:32:29 +00:00
Kostya Serebryany
49204878d7
[lib/Fuzzer] add dfsan_weak_hook_memcmp, enable the test that uses it, simplify the test runner
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236683 91177308-0d34-0410-b5e6-96231b3b80d8
2015-05-07 00:11:33 +00:00
Kostya Serebryany
8434a039e2
[lib/Fuzzer] remove dfsan_fuzzer_abi.list -- its contents are now moved to dfsan proper
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236659 91177308-0d34-0410-b5e6-96231b3b80d8
2015-05-06 22:47:24 +00:00
Kostya Serebryany
29c6bd6e4f
DFSan-based fuzzer (proof of concept).
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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
