Kostya Serebryany
a9a412139e
[libFuzzer] initial implementation of path coverage based on -fsanitize-coverage=trace-pc. This does not scale well yet, but already cracks FullCoverageSetTest in seconds
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llvm-svn: 262073
2016-02-26 21:33:56 +00:00
Kostya Serebryany
7ef7f142ff
[libFuzzer] only read MaxLen bytes from every file in the corpus to speedup loading the corpus
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llvm-svn: 261267
2016-02-18 21:49:10 +00:00
Kostya Serebryany
a45a009f24
[libFuzzer] don't timeout when loading the corpus. Be a bit more verbose when loading large corpus.
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llvm-svn: 261143
2016-02-17 19:42:34 +00:00
Kostya Serebryany
abc380db58
[libFuzzer] remove std::vector operations from hot paths, NFC
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llvm-svn: 260829
2016-02-13 17:56:51 +00:00
Kostya Serebryany
bf966c5f23
[libFuzzer] don't require seed in fuzzer::Mutate, instead use the global Fuzzer object for fuzzer::Mutate. This makes custom mutators fast
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llvm-svn: 260810
2016-02-13 06:24:18 +00:00
Kostya Serebryany
b9687a1cc3
[libFuzzer] get rid of UserSuppliedFuzzer; NFC
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llvm-svn: 260798
2016-02-13 03:25:16 +00:00
Kostya Serebryany
b2451a8b09
[libFuzzer] provide a plain C interface for custom mutators (experimental)
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llvm-svn: 260794
2016-02-13 02:29:38 +00:00
Kostya Serebryany
036c2a2dea
[libFuzzer] don't write the test unit when a leak is detected (since we don't know which unit causes the leak)
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llvm-svn: 259731
2016-02-04 00:02:17 +00:00
Kostya Serebryany
e3ec64cf18
[libFuzzer] add -timeout_exitcode option
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llvm-svn: 259265
2016-01-29 23:30:07 +00:00
Kostya Serebryany
0c11655f17
[libFuzzer] add -abort_on_timeout option
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llvm-svn: 258631
2016-01-23 19:34:19 +00:00
Ivan Krasin
ce1bcd8c31
Use std::piecewise_constant_distribution instead of ad-hoc binary search.
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Summary:
Fix the issue with the most recently discovered unit receiving much less attention.
Note: this is the second attempt (prev: r258473). Now, libc++ build is fixed.
Reviewers: aizatsky, kcc
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D16487
llvm-svn: 258571
2016-01-22 22:28:27 +00:00
Ivan Krasin
7b4522dc59
Revert r258473 as it's breaking the build with libc++
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Reviewers: kcc
Differential Revision: http://reviews.llvm.org/D16441
llvm-svn: 258479
2016-01-22 03:21:52 +00:00
Ivan Krasin
db4009626d
Use std::piecewise_constant_distribution instead of ad-hoc binary search.
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Summary:
Fix the issue with the most recently discovered unit receiving much less attention.
Note: I had to change the seed for one test to make it pass. Alternatively,
the number of runs could be increased. I believe that the average time of
'foo' discovery is not increased, just seed=1 was particularly convenient
for the previous PRNG scheme used.
Reviewers: aizatsky, kcc
Subscribers: llvm-commits, kcc
Differential Revision: http://reviews.llvm.org/D16419
llvm-svn: 258473
2016-01-22 01:32:34 +00:00
Mike Aizatsky
d01a744fd9
[libfuzzer] use %p for printing addresses
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llvm-svn: 258370
2016-01-21 00:02:09 +00:00
Kostya Serebryany
87079ee20d
[libFuzzer] move some code from public interface header to a non-public header. NFC
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llvm-svn: 257963
2016-01-16 00:04:36 +00:00
Kostya Serebryany
f77ffed10e
[libFuzzer] suggest a dictionary to the user of some of the trace-based dictionary entries were successful
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llvm-svn: 257736
2016-01-14 02:36:44 +00:00
Kostya Serebryany
f050542d8f
[libFuzzer] make CurrentUnit a POD object instead of vector to avoid extra allocations
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llvm-svn: 257713
2016-01-13 23:46:01 +00:00
Kostya Serebryany
89262beb8c
[libFuzzer] make sure we find buffer overflow in the input buffer. Previously, re-using the same vector object was hiding buffer overflows (unless we used annotated vector)
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llvm-svn: 257701
2016-01-13 23:02:30 +00:00
Kostya Serebryany
ec88d2d728
[libFuzzer] make sure to update CurrentUnit when drilling
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llvm-svn: 257560
2016-01-13 01:58:27 +00:00
Kostya Serebryany
bdc66ac566
[libFuzzer] change the way trace-based mutations are applied. Instead of a custom code just rely on the automatically created dictionary
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llvm-svn: 257248
2016-01-09 03:08:58 +00:00
Mike Aizatsky
b1bf6550e4
[libfuzzer] print_new_cov_pcs experimental option.
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Differential Revision: http://reviews.llvm.org/D15901
llvm-svn: 256882
2016-01-06 00:21:22 +00:00
Kostya Serebryany
ab36ca708c
[libFuzzer] make CrossOver just one of the other mutations
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llvm-svn: 256081
2015-12-19 02:49:09 +00:00
Kostya Serebryany
e4adf51693
[libFuzzer] print successfull mutations sequences
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llvm-svn: 256071
2015-12-19 01:09:49 +00:00
Kostya Serebryany
d2117b7607
[libFuzzer] don't reload the corpus more than once every second
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llvm-svn: 254824
2015-12-05 02:09:22 +00:00
Kostya Serebryany
a69b412cc5
[libFuzzer] compute base64 in-process instead of using an external lib. Since libFuzzer should not depend on anything, just re-implement base64 encoder. PR25746
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llvm-svn: 254784
2015-12-04 22:29:39 +00:00
Mike Aizatsky
2444b7e49b
Libfuzzer: do not pass null into user function
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Differential Revision: http://reviews.llvm.org/D15098
llvm-svn: 254558
2015-12-02 22:43:53 +00:00
Kostya Serebryany
4b6eeeca4b
[libFuzzer] add a flag -exact_artifact_path
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llvm-svn: 254100
2015-11-25 21:40:46 +00:00
Kostya Serebryany
2f218614e9
[libFuzzer] make libFuzzer build even with a compiler that does not have sanitizer headers
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llvm-svn: 253003
2015-11-13 01:54:40 +00:00
Mike Aizatsky
4afb4aff05
output_csv libfuzzer option
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Summary:
The option outputs statistics in CSV format preceded by 1 header line.
This is intended for machine processing of the output.
-verbosity=0 should likely be set.
Differential Revision: http://reviews.llvm.org/D14600
llvm-svn: 252856
2015-11-12 04:38:40 +00:00
Kostya Serebryany
745d4188ac
[libFuzzer] experimental flag -drill (another search heuristic; Mike Aizatsky's idea)
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llvm-svn: 252838
2015-11-12 01:02:01 +00:00
Kostya Serebryany
548bb85f31
[libFuzzer] make libFuzzer link if there is no sanitizer coverage instrumentation (it will fail at start-up time)
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llvm-svn: 252533
2015-11-09 23:17:45 +00:00
Kostya Serebryany
23d6a0a60f
[libFuzzer] print a bit fewer lines
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llvm-svn: 252123
2015-11-05 01:19:42 +00:00
Kostya Serebryany
9d859680b2
[libFuzzer] when choosing the next unit to mutate, give some preference to the most recent units (they are more likely to be interesting)
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llvm-svn: 252097
2015-11-04 23:22:25 +00:00
Kostya Serebryany
c171514e30
[libFuzzer] add -merge flag to merge corpora
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llvm-svn: 251168
2015-10-24 01:16:40 +00:00
Kostya Serebryany
f03686178a
[libFuzzer] remove some old code; also make __sanitizer_get_total_unique_caller_callee_pairs weak so that newer libFuzzer works with older asan
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llvm-svn: 251133
2015-10-23 18:37:58 +00:00
Kostya Serebryany
829e28a729
[libFuzzer] use the indirect caller-callee counter as an independent search heuristic
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llvm-svn: 251078
2015-10-22 23:55:39 +00:00
Kostya Serebryany
8c8cba5fa8
[libFuzzer] more refactoring the code that checks the coverage. NFC
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llvm-svn: 251075
2015-10-22 22:56:45 +00:00
Kostya Serebryany
e6c24f1866
[libFuzzer] refactoring the code that checks the coverage. NFC
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llvm-svn: 251074
2015-10-22 22:50:47 +00:00
Kostya Serebryany
99fe4b430c
[libFuzzer] remove the deprecated 'tokens' feature
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llvm-svn: 251069
2015-10-22 21:48:09 +00:00
Kostya Serebryany
b30ba817ce
[libFuzzer] add -shuffle flag
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llvm-svn: 250603
2015-10-17 04:38:26 +00:00
Kostya Serebryany
a51be6eaa4
[libFuzzer] print a stack trace on timeout
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llvm-svn: 250571
2015-10-16 23:04:31 +00:00
Kostya Serebryany
c1fcef367b
[libFuzzer] reduce the size of artifacts printed on the screen
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llvm-svn: 250565
2015-10-16 22:47:20 +00:00
Kostya Serebryany
47e5e62e71
[libFuzzer] When -test_single_input crashes the test it is not necessary to write crash-file because input is already known to the user. Patch by Mike Aizatsky
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llvm-svn: 250564
2015-10-16 22:41:47 +00:00
Kostya Serebryany
98ed53705f
[libFuzzer] don't print large artifacts to stderr
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llvm-svn: 249808
2015-10-09 04:03:14 +00:00
Kostya Serebryany
e3d637a4af
[libFuzzer] add -artifact_prefix flag
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llvm-svn: 249807
2015-10-09 03:57:59 +00:00
Kostya Serebryany
4487114c63
[libFuzzer] make LLVMFuzzerTestOneInput (the fuzzer target function) return int instead of void. The actual return value is not *yet* used (and expected to be 0). This change is API breaking, so the fuzzers will need to be updated.
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llvm-svn: 249214
2015-10-02 23:34:06 +00:00
Kostya Serebryany
20a00e008b
[libFuzzer] remove experimental flag and functionality
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llvm-svn: 249194
2015-10-02 22:00:32 +00:00
Kostya Serebryany
70f0401f05
[libFuzzer] add a flag -max_total_time
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llvm-svn: 249181
2015-10-02 20:47:55 +00:00
Kostya Serebryany
6c4e275248
[libFuzzer] perform fewer crossover operations compared to plain mutations
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llvm-svn: 247364
2015-09-11 00:20:58 +00:00
Kostya Serebryany
28b0d0ab37
[libFuzzer] remove -iterations as redundant (there is also -num_runs)
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llvm-svn: 247030
2015-09-08 17:30:35 +00:00