Lenny Maiorani
1850ddfeb6
Fix missing space in libfuzzer's help text.
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llvm-svn: 244800
2015-08-12 20:00:10 +00:00
Kostya Serebryany
a9d3e6b2dc
[libFuzzer] add two flags, -tbm_depth and -tbm_width to control how the trace-based-mutations are applied
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llvm-svn: 244712
2015-08-12 01:55:37 +00:00
Kostya Serebryany
2bdb9ad059
[libFuzzer] add colons to the stats output to avoid confusion
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llvm-svn: 244708
2015-08-12 01:04:27 +00:00
Kostya Serebryany
5a4f36556e
[libFuzzer] use raw C IO to reduce the risk of a deadlock in a signal handler.
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llvm-svn: 244707
2015-08-12 00:55:09 +00:00
Nick Lewycky
1bff8578d4
Fix unused variable 'X' in release builds.
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llvm-svn: 244571
2015-08-11 05:57:10 +00:00
Kostya Serebryany
1c2b96fda9
[libFuzzer] add -only_ascii flag
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llvm-svn: 244559
2015-08-11 01:44:42 +00:00
Yaron Keren
b598ba7c7c
Add missing include guard to FuzzerInternal.h, NFC.
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llvm-svn: 244457
2015-08-10 16:37:40 +00:00
Kostya Serebryany
90b784ccc2
[libFuzzer] move the mutators to public interface so that custom mutators may reuse these functions directly
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llvm-svn: 244250
2015-08-06 19:19:55 +00:00
Kostya Serebryany
acf2228ee8
[libFuzzer] add one more mutation strategy: byte shuffling
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llvm-svn: 244188
2015-08-06 01:29:13 +00:00
Kostya Serebryany
c721977710
[libFuzzer] avoid build warnings in non-assert build (useful warning in this case)
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llvm-svn: 244177
2015-08-05 23:44:42 +00:00
Kostya Serebryany
4338e69a99
[libFuzzer] in dfsan mode, set labels every time we start recording traces as opposed to doing it at process startup. This ensures that the labels are fresh.
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llvm-svn: 244165
2015-08-05 23:02:57 +00:00
Kostya Serebryany
80051e17c0
[libFuzzer] add option -report_slow_units=Nsec to control when slow units are printed
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llvm-svn: 244152
2015-08-05 21:43:48 +00:00
Kostya Serebryany
5be4cb583e
[libFuzzer] add a missing test file
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llvm-svn: 244151
2015-08-05 21:32:13 +00:00
Kostya Serebryany
897a5553b1
[libFuzzer] use data-flow feedback from strcmp
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llvm-svn: 244084
2015-08-05 18:23:01 +00:00
Kostya Serebryany
7ee2b779f7
[libFuzzer] more refactoring of the Mutator and adding tests to it
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llvm-svn: 243818
2015-08-01 02:23:06 +00:00
Kostya Serebryany
82464edd32
[libFuzzer] start refactoring the Mutator and adding tests to it
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llvm-svn: 243817
2015-08-01 01:42:51 +00:00
Kostya Serebryany
7a9f5ff70b
[libFuzzer] limit the size of the inputs printed to stderr
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llvm-svn: 243795
2015-07-31 22:07:17 +00:00
Kostya Serebryany
a9e61b09d8
[libFuzzer] make sure that 2-byte arguments of switch() are handled properly
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llvm-svn: 243781
2015-07-31 20:58:55 +00:00
Kostya Serebryany
ccad0c6979
[libFuzzer] record traces from the switch statements only when told to do so
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llvm-svn: 243768
2015-07-31 18:09:08 +00:00
Kostya Serebryany
fead0c3ca4
[libFuzzer] support switch interception in dfsan mode
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llvm-svn: 243760
2015-07-31 17:05:05 +00:00
Kostya Serebryany
71a4e8ccbf
[libFuzzer] trace switch statements and apply mutations based on the expected case values
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llvm-svn: 243726
2015-07-31 01:33:06 +00:00
Kostya Serebryany
e76cb85ac7
[libFuzzer] fix the strncmp interceptor -- it should respect short strings.
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llvm-svn: 243691
2015-07-30 21:22:22 +00:00
Kostya Serebryany
433c6e8b4b
[libFuzzer] implement strncmp hook for data-flow-guided fuzzing (w/ and w/o dfsan), add a test
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llvm-svn: 243611
2015-07-30 02:33:45 +00:00
Kostya Serebryany
d6ac2f5889
[libFuzzer] implement memcmp hook for data-flow-guided fuzzing (w/o dfsan), extend the memcmp fuzzer test
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llvm-svn: 243603
2015-07-30 01:34:58 +00:00
Kostya Serebryany
fc26c8ec1c
[libFuzzer] ensure that the dfsan tracing hooks actually run (using -verbosity=3 in tests)
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llvm-svn: 243365
2015-07-28 01:25:00 +00:00
Kostya Serebryany
afb5a6f493
[libFuzzer] when using cmp traces, first check that the CMP is evaluated to one value much more frequently than to the other value (heuristic)
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llvm-svn: 243363
2015-07-28 00:59:53 +00:00
Kostya Serebryany
02e05d0662
[libFuzzer] allow users to supply their own implementation of rand
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llvm-svn: 243078
2015-07-24 01:06:40 +00:00
Kostya Serebryany
35d1f9b1f6
[libFuzzer] dump long running units to disk
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llvm-svn: 243031
2015-07-23 18:37:22 +00:00
Alexey Samsonov
84ab5e6b2a
[Fuzzer] Rely on $PATH expansion instead of hardcoding paths in tests. NFC.
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llvm-svn: 242851
2015-07-21 22:51:55 +00:00
Alexey Samsonov
4a6c6512bc
[Fuzzer] Clearly separate regular and DFSan tests. NFC.
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llvm-svn: 242850
2015-07-21 22:51:49 +00:00
Kostya Serebryany
7c2874be12
[libFuzzer] require the files and directories passed to the fuzzer to exist
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llvm-svn: 242596
2015-07-18 00:03:37 +00:00
Kostya Serebryany
444683ece7
[lib/Fuzzer] make assertions more informative and update comments for the user-supplied mutator
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llvm-svn: 238658
2015-05-30 17:33:13 +00:00
Kostya Serebryany
74916b0deb
[lib/Fuzzer] relax an assertion
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llvm-svn: 238608
2015-05-29 20:31:17 +00:00
Kostya Serebryany
dd85a5b4fc
[lib/Fuzzer] make the fuzzing timeout 1200 seconds by default (was: infinity)
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llvm-svn: 238251
2015-05-26 20:57:47 +00:00
Kostya Serebryany
6903bb7921
[lib/Fuzzer] fix docs
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llvm-svn: 238236
2015-05-26 19:32:52 +00:00
Kostya Serebryany
9de53cc3c2
[lib/Fuzzer] fix build with assertions
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llvm-svn: 238235
2015-05-26 19:29:33 +00:00
Kostya Serebryany
e460252e97
[lib/Fuzzer] doxygen-ify the comments for the user interface
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llvm-svn: 238086
2015-05-23 02:12:05 +00:00
Kostya Serebryany
6fa7ac36da
[lib/Fuzzer] fully get rid of std::cerr in libFuzzer
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llvm-svn: 238081
2015-05-23 01:22:35 +00:00
Kostya Serebryany
c28d1607f2
[lib/Fuzzer] start getting rid of std::cerr. Sadly, these parts of C++ library used in libFuzzer badly interract with the same code used in the target function and also with dfsan. It's easier to just not use std::cerr than to defeat these issues.
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llvm-svn: 238078
2015-05-23 01:07:46 +00:00
Kostya Serebryany
3afd2456cd
[lib/Fuzzer] remove -use_coverage_pairs=1, an experimental feature that is unlikely to ever scale
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llvm-svn: 238063
2015-05-22 22:47:03 +00:00
Kostya Serebryany
2ee531c66a
[lib/Fuzzer] extend the fuzzer interface to allow user-supplied mutators
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llvm-svn: 238059
2015-05-22 22:35:31 +00:00
Kostya Serebryany
a05448768c
[lib/Fuzzer] ignore flags that start with --; use git pull --rebase instead of just git pull
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llvm-svn: 237950
2015-05-21 20:39:13 +00:00
Kostya Serebryany
46c887ece3
[lib/Fuzzer] change the meaning of -timeout flag: now timeout is applied to every unit of work separately
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llvm-svn: 237735
2015-05-19 22:12:57 +00:00
Kostya Serebryany
33a7c23155
[lib/Fuzzer] more efficient reload logic; also don't spam git too much
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llvm-svn: 237649
2015-05-19 01:06:07 +00:00
Kostya Serebryany
a98902fdfc
[lib/Fuzzer] when -sync_command=<CMD> is given, periodically execute 'CMD CORPUS' to synchronize with other processes
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llvm-svn: 237617
2015-05-18 21:34:20 +00:00
Logan Chien
5bf41f4c70
Code cleanup: Reindent Fuzzer::MutateAndTestOne.
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llvm-svn: 237533
2015-05-17 02:44:31 +00:00
Kostya Serebryany
72ed46ef80
[lib/Fuzzer] Add SHA1 implementation from public domain.
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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
llvm-svn: 237400
2015-05-14 22:41:49 +00:00
Kostya Serebryany
31389337e7
[lib/Fuzzer] enable -use_counters=1 by default
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llvm-svn: 237272
2015-05-13 18:31:46 +00:00
Kostya Serebryany
4abd8e053b
[lib/Fuzzer] A simple script to synchronise a fuzz test corpus with an external git repository.
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llvm-svn: 237208
2015-05-12 23:19:12 +00:00
Kostya Serebryany
35ac844218
[lib/Fuzzer] use sha1sum for the file hash
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llvm-svn: 237198
2015-05-12 22:03:34 +00:00