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76 Commits

Author SHA1 Message Date
Kostya Serebryany
43a24b5d93 [libFuzzer] make sure to update CurrentUnit when drilling 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@257560 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-01-13 01:58:27 +00:00
Kostya Serebryany
7fddde9543 [libFuzzer] change the way trace-based mutations are applied. Instead of a custom code just rely on the automatically created dictionary 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@257248 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-01-09 03:08:58 +00:00
Mike Aizatsky
1cea7723fa [libfuzzer] print_new_cov_pcs experimental option. 
Differential Revision: http://reviews.llvm.org/D15901

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256882 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-01-06 00:21:22 +00:00
Kostya Serebryany
a1e5f35b02 [libFuzzer] make CrossOver just one of the other mutations 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256081 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-12-19 02:49:09 +00:00
Kostya Serebryany
7ed616c150 [libFuzzer] print successfull mutations sequences 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256071 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-12-19 01:09:49 +00:00
Kostya Serebryany
d33fc70ecf [libFuzzer] don't reload the corpus more than once every second 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@254824 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-12-05 02:09:22 +00:00
Kostya Serebryany
3f8065b694 [libFuzzer] compute base64 in-process instead of using an external lib. Since libFuzzer should not depend on anything, just re-implement base64 encoder. PR25746 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@254784 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-12-04 22:29:39 +00:00
Mike Aizatsky
ba2d199d49 Libfuzzer: do not pass null into user function 
Differential Revision: http://reviews.llvm.org/D15098

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@254558 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-12-02 22:43:53 +00:00
Kostya Serebryany
e8d7ae6209 [libFuzzer] add a flag -exact_artifact_path 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@254100 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-11-25 21:40:46 +00:00
Kostya Serebryany
ad9ec32c1f [libFuzzer] make libFuzzer build even with a compiler that does not have sanitizer headers 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@253003 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-11-13 01:54:40 +00:00
Mike Aizatsky
c1a030fd64 output_csv libfuzzer option 
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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@252856 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-11-12 04:38:40 +00:00
Kostya Serebryany
1a42a60ebc [libFuzzer] experimental flag -drill (another search heuristic; Mike Aizatsky's idea) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@252838 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-11-12 01:02:01 +00:00
Kostya Serebryany
f41e3780b3 [libFuzzer] make libFuzzer link if there is no sanitizer coverage instrumentation (it will fail at start-up time) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@252533 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-11-09 23:17:45 +00:00
Kostya Serebryany
331a8c8a87 [libFuzzer] print a bit fewer lines 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@252123 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-11-05 01:19:42 +00:00
Kostya Serebryany
d022e94463 [libFuzzer] when choosing the next unit to mutate, give some preference to the most recent units (they are more likely to be interesting) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@252097 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-11-04 23:22:25 +00:00
Kostya Serebryany
242325ad98 [libFuzzer] add -merge flag to merge corpora 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251168 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-10-24 01:16:40 +00:00
Kostya Serebryany
b33343ddb1 [libFuzzer] remove some old code; also make __sanitizer_get_total_unique_caller_callee_pairs weak so that newer libFuzzer works with older asan 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251133 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-10-23 18:37:58 +00:00
Kostya Serebryany
7bcc4cdbdd [libFuzzer] use the indirect caller-callee counter as an independent search heuristic 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251078 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-10-22 23:55:39 +00:00
Kostya Serebryany
41180c6eba [libFuzzer] more refactoring the code that checks the coverage. NFC 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251075 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-10-22 22:56:45 +00:00
Kostya Serebryany
1969ec112d [libFuzzer] refactoring the code that checks the coverage. NFC 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251074 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-10-22 22:50:47 +00:00
Kostya Serebryany
a3619c6b43 [libFuzzer] remove the deprecated 'tokens' feature 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251069 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-10-22 21:48:09 +00:00
Kostya Serebryany
2a50aa48db [libFuzzer] add -shuffle flag 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@250603 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-10-17 04:38:26 +00:00
Kostya Serebryany
9b24e29d72 [libFuzzer] print a stack trace on timeout 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@250571 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-10-16 23:04:31 +00:00
Kostya Serebryany
5792846506 [libFuzzer] reduce the size of artifacts printed on the screen 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@250565 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-10-16 22:47:20 +00:00
Kostya Serebryany
17062e257e [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 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@250564 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-10-16 22:41:47 +00:00
Kostya Serebryany
002f1b00d6 [libFuzzer] don't print large artifacts to stderr 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@249808 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-10-09 04:03:14 +00:00
Kostya Serebryany
22d6013f13 [libFuzzer] add -artifact_prefix flag 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@249807 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-10-09 03:57:59 +00:00
Kostya Serebryany
9906eefc84 [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. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@249214 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-10-02 23:34:06 +00:00
Kostya Serebryany
f351bce7bd [libFuzzer] remove experimental flag and functionality 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@249194 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-10-02 22:00:32 +00:00
Kostya Serebryany
cd0d243e72 [libFuzzer] add a flag -max_total_time 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@249181 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-10-02 20:47:55 +00:00
Kostya Serebryany
8a15ef599e [libFuzzer] perform fewer crossover operations compared to plain mutations 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@247364 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-09-11 00:20:58 +00:00
Kostya Serebryany
06465a68cc [libFuzzer] remove -iterations as redundant (there is also -num_runs) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@247030 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-09-08 17:30:35 +00:00
Kostya Serebryany
6cc3ed7cdd [libFuzzer] actually make the dictionaries work (+docs) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@246825 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-09-04 00:12:11 +00:00
Kostya Serebryany
580504f120 [libFuzzer] honour -only_ascii=1 when reading the initial corpus. Also, remove ugly #ifdef 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@246689 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-09-02 19:08:08 +00:00
Kostya Serebryany
234cfada18 [libFuzzer] add two flags, -tbm_depth and -tbm_width to control how the trace-based-mutations are applied 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244712 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-08-12 01:55:37 +00:00
Kostya Serebryany
e0b167c66c [libFuzzer] add colons to the stats output to avoid confusion 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244708 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-08-12 01:04:27 +00:00
Nick Lewycky
eacc53d67e Fix unused variable 'X' in release builds. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244571 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-08-11 05:57:10 +00:00
Kostya Serebryany
89f52ac188 [libFuzzer] add -only_ascii flag 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244559 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-08-11 01:44:42 +00:00
Kostya Serebryany
7141424447 [libFuzzer] add option -report_slow_units=Nsec to control when slow units are printed 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244152 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-08-05 21:43:48 +00:00
Kostya Serebryany
427b5a50cf [libFuzzer] limit the size of the inputs printed to stderr 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243795 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-31 22:07:17 +00:00
Kostya Serebryany
33a9a09cd7 [libFuzzer] allow users to supply their own implementation of rand 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243078 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-24 01:06:40 +00:00
Kostya Serebryany
6cbc095f13 [libFuzzer] dump long running units to disk 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243031 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-07-23 18:37:22 +00:00
Kostya Serebryany
63da212749 [lib/Fuzzer] make assertions more informative and update comments for the user-supplied mutator 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238658 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-05-30 17:33:13 +00:00
Kostya Serebryany
ea8a3963b4 [lib/Fuzzer] make the fuzzing timeout 1200 seconds by default (was: infinity) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238251 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-05-26 20:57:47 +00:00
Kostya Serebryany
f580f3683c [lib/Fuzzer] fix build with assertions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238235 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-05-26 19:29:33 +00:00
Kostya Serebryany
d434a0a1b2 [lib/Fuzzer] fully get rid of std::cerr in libFuzzer 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238081 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-05-23 01:22:35 +00:00
Kostya Serebryany
464deacf05 [lib/Fuzzer] remove -use_coverage_pairs=1, an experimental feature that is unlikely to ever scale 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238063 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-05-22 22:47:03 +00:00
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
556425f9a9 [lib/Fuzzer] change the meaning of -timeout flag: now timeout is applied to every unit of work separately 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237735 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-05-19 22:12:57 +00:00
Kostya Serebryany
3b3cbed1b0 [lib/Fuzzer] more efficient reload logic; also don't spam git too much 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237649 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-05-19 01:06:07 +00:00