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146 Commits

Author SHA1 Message Date
Kostya Serebryany
3250d874fb [libFuzzer] remove default initializer as a workaround for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68399. Don't need it anyway. 
llvm-svn: 253419
 2015-11-18 01:08:30 +00:00
Kostya Serebryany
2f218614e9 [libFuzzer] make libFuzzer build even with a compiler that does not have sanitizer headers 
llvm-svn: 253003
 2015-11-13 01:54:40 +00:00
Mike Aizatsky
4afb4aff05 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

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) 
llvm-svn: 252838
 2015-11-12 01:02:01 +00:00
Kostya Serebryany
53bfef8ad6 [libFuzzer] add UninstrumentedTest.cpp (missing from a previous commit) 
llvm-svn: 252658
 2015-11-10 22:02:56 +00:00
Kostya Serebryany
548bb85f31 [libFuzzer] make libFuzzer link if there is no sanitizer coverage instrumentation (it will fail at start-up time) 
llvm-svn: 252533
 2015-11-09 23:17:45 +00:00
Kostya Serebryany
23d6a0a60f [libFuzzer] print a bit fewer lines 
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) 
llvm-svn: 252097
 2015-11-04 23:22:25 +00:00
Kostya Serebryany
6ba411ce7a [libFuzzer] make -test_single_input more reliable: make sure the input's size is equal to it's capacity 
llvm-svn: 251961
 2015-11-03 18:57:25 +00:00
Kostya Serebryany
c171514e30 [libFuzzer] add -merge flag to merge corpora 
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 
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 
llvm-svn: 251078
 2015-10-22 23:55:39 +00:00
Kostya Serebryany
8c8cba5fa8 [libFuzzer] more refactoring the code that checks the coverage. NFC 
llvm-svn: 251075
 2015-10-22 22:56:45 +00:00
Kostya Serebryany
e6c24f1866 [libFuzzer] refactoring the code that checks the coverage. NFC 
llvm-svn: 251074
 2015-10-22 22:50:47 +00:00
Kostya Serebryany
99fe4b430c [libFuzzer] remove the deprecated 'tokens' feature 
llvm-svn: 251069
 2015-10-22 21:48:09 +00:00
Craig Topper
c8409f4435 Make a bunch of static arrays const. 
llvm-svn: 250642
 2015-10-18 05:15:34 +00:00
Kostya Serebryany
b30ba817ce [libFuzzer] add -shuffle flag 
llvm-svn: 250603
 2015-10-17 04:38:26 +00:00
Kostya Serebryany
a51be6eaa4 [libFuzzer] print a stack trace on timeout 
llvm-svn: 250571
 2015-10-16 23:04:31 +00:00
Kostya Serebryany
c1fcef367b [libFuzzer] reduce the size of artifacts printed on the screen 
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 
llvm-svn: 250564
 2015-10-16 22:41:47 +00:00
Kostya Serebryany
98ed53705f [libFuzzer] don't print large artifacts to stderr 
llvm-svn: 249808
 2015-10-09 04:03:14 +00:00
Kostya Serebryany
e3d637a4af [libFuzzer] add -artifact_prefix flag 
llvm-svn: 249807
 2015-10-09 03:57:59 +00:00
Kostya Serebryany
6e1f94e9cd [libFuzzer] fix 32-bit build 
llvm-svn: 249646
 2015-10-08 00:59:25 +00:00
Kostya Serebryany
d0d9f0b833 [libFuzzer] trying to fix at-exit hang 
llvm-svn: 249231
 2015-10-03 07:02:05 +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. 
llvm-svn: 249214
 2015-10-02 23:34:06 +00:00
Kostya Serebryany
20a00e008b [libFuzzer] remove experimental flag and functionality 
llvm-svn: 249194
 2015-10-02 22:00:32 +00:00
Kostya Serebryany
70f0401f05 [libFuzzer] add a flag -max_total_time 
llvm-svn: 249181
 2015-10-02 20:47:55 +00:00
Ivan Krasin
b941371206 [LibFuzzer] test_single_input option to run a single test case. 
-test_single_input flag specifies a file name with test data.

Review URL: http://reviews.llvm.org/D13359

Patch by Mike Aizatsky!

llvm-svn: 249096
 2015-10-01 23:23:06 +00:00
Kostya Serebryany
8474784569 [libFuzzer] Marking exported symbols as visible. Patch by Mike Aizatsky 
llvm-svn: 248954
 2015-09-30 22:22:37 +00:00
Kostya Serebryany
6c4e275248 [libFuzzer] perform fewer crossover operations compared to plain mutations 
llvm-svn: 247364
 2015-09-11 00:20:58 +00:00
Kostya Serebryany
19cfb70c6a [libFuzzer] refactor the code to allow building libFuzzer on platforms that don't have dfsan and don't support weak functions 
llvm-svn: 247321
 2015-09-10 18:48:38 +00:00
Kostya Serebryany
0001c18d8c [libFuzzer] add two more variants of FuzzerDriver for convenience 
llvm-svn: 247300
 2015-09-10 16:57:57 +00:00
Ivan Krasin
cc79d453f1 [libFuzzer]Add a test for defeating a hash sum. 
Summary:
Add a test for a data followed by 4-byte hash value.
I use a slightly modified Jenkins hash function,
as described in https://en.wikipedia.org/wiki/Jenkins_hash_function

The modification is to ensure that hash(zeros) != 0.

Reviewers: kcc

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D12648

llvm-svn: 247076
 2015-09-08 21:22:52 +00:00
Kostya Serebryany
a2e2e93ba1 [libFuzzer] remove a piece of stale code 
llvm-svn: 247067
 2015-09-08 20:40:10 +00:00
Kostya Serebryany
04cc0059e2 [libFuzzer] be more robust when dealing with files on disk (e.g. don't crash if a file was there but disappeared) 
llvm-svn: 247066
 2015-09-08 20:36:33 +00:00
Kostya Serebryany
2d2cfbe976 [libFuzzer] better documentatio for -save_minimized_corpus=1 
llvm-svn: 247033
 2015-09-08 17:43:51 +00:00
Kostya Serebryany
28b0d0ab37 [libFuzzer] remove -iterations as redundant (there is also -num_runs) 
llvm-svn: 247030
 2015-09-08 17:30:35 +00:00
Kostya Serebryany
a575372f59 [libFuzzer] add one more mutator: Mutate_ChangeASCIIInteger 
llvm-svn: 247027
 2015-09-08 17:19:31 +00:00
Kostya Serebryany
22e4458e65 [libFuzzer] more accurate logic for traces, 80-char fix 
llvm-svn: 246888
 2015-09-04 22:32:25 +00:00
Kostya Serebryany
2c51ca12e7 [libFuzzer] when a single mutation fails try a few more times with other mutations before returning un-mutated data 
llvm-svn: 246828
 2015-09-04 00:40:29 +00:00
Kostya Serebryany
28a699d9b8 [libFuzzer] actually make the dictionaries work (+docs) 
llvm-svn: 246825
 2015-09-04 00:12:11 +00:00
Kostya Serebryany
3eaa9123bf [libFuzzer] refactor the mutation functions so that they are now methods of a class. NFC 
llvm-svn: 246808
 2015-09-03 21:24:19 +00:00
Kostya Serebryany
3b60fc1204 [libFuzzer] adding a parser for AFL-style dictionaries + tests. 
llvm-svn: 246800
 2015-09-03 20:23:46 +00:00
Kostya Serebryany
d4b7d4667f [libFuzzer] deprecate the -tokens flag. This was a bad idea because the corpus with this flag contains encrypted inputs, not the real inputs, which complicates interoperation with other fuzzers. Instead we'll need to implement AFL dictionary support 
llvm-svn: 246734
 2015-09-02 23:27:39 +00:00
Kostya Serebryany
9c0479fa99 [libFuzzer] honour -only_ascii=1 when reading the initial corpus. Also, remove ugly #ifdef 
llvm-svn: 246689
 2015-09-02 19:08:08 +00:00
Kostya Serebryany
0e83baec1a [libFuzzer] fix minor inefficiency, PR24584 
llvm-svn: 246087
 2015-08-26 21:55:19 +00:00
Lenny Maiorani
1850ddfeb6 Fix missing space in libfuzzer's help text. 
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 
llvm-svn: 244712
 2015-08-12 01:55:37 +00:00
Kostya Serebryany
2bdb9ad059 [libFuzzer] add colons to the stats output to avoid confusion 
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. 
llvm-svn: 244707
 2015-08-12 00:55:09 +00:00