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66 Commits

Author SHA1 Message Date
Kostya Serebryany
88667faa02 [libFuzzer] add hooks for strstr, strcasestr, strcasecmp, strncasecmp 
llvm-svn: 275648
 2016-07-15 23:27:19 +00:00
Mike Aizatsky
971be03956 [libfuzzer] prune_corpus option for disabling pruning during the load. 
Summary:
The option is very useful for testing, plus I intend to measure
its effect on fuzzer effectiveness.

Differential Revision: http://reviews.llvm.org/D21084

llvm-svn: 272035
 2016-06-07 18:16:32 +00:00
Mike Aizatsky
785d92e27f [libfuzzer] Trying random unit prefixes during corpus load. 
Differential Revision: http://reviews.llvm.org/D20301

llvm-svn: 270632
 2016-05-24 23:14:29 +00:00
Kostya Serebryany
bd6b8a3638 [libFuzzer] better document the -merge=1 flag 
llvm-svn: 268957
 2016-05-09 19:11:36 +00:00
Kostya Serebryany
6a10031791 [libFuzzer] enhance -rss_limit_mb and enable by default. Now it will print the OOM reproducer. 
llvm-svn: 268821
 2016-05-06 23:38:07 +00:00
Kostya Serebryany
2583e597c6 [libFuzzer] add exeprimental -rss_limit_mb flag to fight against OOMs 
llvm-svn: 268807
 2016-05-06 21:58:35 +00:00
Kostya Serebryany
6e5d1a22c3 [libFuzzer] enable detect_leaks=1, add proper docs 
llvm-svn: 268088
 2016-04-29 18:49:55 +00:00
Kostya Serebryany
13bad441e8 [libFuzzer] added -detect_leaks flag (0 by default for now). When enabled, it will help finding leaks while fuzzing 
llvm-svn: 266838
 2016-04-20 00:24:21 +00:00
Kostya Serebryany
c35be8422b [libFuzzer] more docs 
llvm-svn: 264803
 2016-03-29 23:07:36 +00:00
Kostya Serebryany
6ff8ede73a [libFuzzer] handle SIGTERM 
llvm-svn: 264338
 2016-03-24 21:03:58 +00:00
Kostya Serebryany
01af064f8d [libFuzzer] add a flag close_fd_mask so that we can silence spammy targets by closing stderr/stdout 
llvm-svn: 263831
 2016-03-18 20:58:29 +00:00
Kostya Serebryany
c99e69af78 [libFuzzer] improve -merge functionality 
llvm-svn: 263769
 2016-03-18 00:23:29 +00:00
Kostya Serebryany
e634bbeadd [libFuzzer] deprecate several flags 
llvm-svn: 263739
 2016-03-17 19:59:39 +00:00
Kostya Serebryany
5b93d4b15a [libFuzzer] try to use max_len based on the items of the corpus instead of blindly defaulting to 64 bytes. 
llvm-svn: 263323
 2016-03-12 01:57:04 +00:00
Kostya Serebryany
96af1208c1 [libFuzzer] deprecate exit_on_first flag 
llvm-svn: 262417
 2016-03-01 22:33:14 +00:00
Kostya Serebryany
d5755334e5 [libFuzzer] add generic signal handlers so that libFuzzer can report at least something if ASan is not handlig the signals for us. Remove abort_on_timeout flag. 
llvm-svn: 262415
 2016-03-01 22:19:21 +00:00
Kostya Serebryany
503e17c728 [libFuzzer] add -print_final_stats=1 flag 
llvm-svn: 262084
 2016-02-26 22:42:23 +00:00
Kostya Serebryany
e3ec64cf18 [libFuzzer] add -timeout_exitcode option 
llvm-svn: 259265
 2016-01-29 23:30:07 +00:00
Kostya Serebryany
0c11655f17 [libFuzzer] add -abort_on_timeout option 
llvm-svn: 258631
 2016-01-23 19:34:19 +00:00
Kostya Serebryany
b40c61f46c [libFuzzer] do mutations based on memcmp/strcmp interceptors under a separate flag (-use_memcmp, default=1) 
llvm-svn: 257873
 2016-01-15 06:24:05 +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 
llvm-svn: 257248
 2016-01-09 03:08:58 +00:00
Mike Aizatsky
b1bf6550e4 [libfuzzer] print_new_cov_pcs experimental option. 
Differential Revision: http://reviews.llvm.org/D15901

llvm-svn: 256882
 2016-01-06 00:21:22 +00:00
Kostya Serebryany
4165eed18e [libFuzzer] deprecate -save_minimized_corpus, -merge can be used instead 
llvm-svn: 256086
 2015-12-19 03:42:16 +00:00
Mike Aizatsky
ea27e92765 [LibFuzzer] Introducing FUZZER_FLAG_UNSIGNED and using it for seeding. 
Differential Revision: http://reviews.llvm.org/D15339

done

llvm-svn: 255296
 2015-12-10 20:41:53 +00:00
Kostya Serebryany
4b6eeeca4b [libFuzzer] add a flag -exact_artifact_path 
llvm-svn: 254100
 2015-11-25 21:40:46 +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
c171514e30 [libFuzzer] add -merge flag to merge corpora 
llvm-svn: 251168
 2015-10-24 01:16:40 +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
99fe4b430c [libFuzzer] remove the deprecated 'tokens' feature 
llvm-svn: 251069
 2015-10-22 21:48:09 +00:00
Kostya Serebryany
b30ba817ce [libFuzzer] add -shuffle flag 
llvm-svn: 250603
 2015-10-17 04:38:26 +00:00
Kostya Serebryany
e3d637a4af [libFuzzer] add -artifact_prefix flag 
llvm-svn: 249807
 2015-10-09 03:57:59 +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
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
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
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
1c2b96fda9 [libFuzzer] add -only_ascii flag 
llvm-svn: 244559
 2015-08-11 01:44:42 +00:00
Kostya Serebryany
80051e17c0 [libFuzzer] add option -report_slow_units=Nsec to control when slow units are printed 
llvm-svn: 244152
 2015-08-05 21:43:48 +00:00
Kostya Serebryany
dd85a5b4fc [lib/Fuzzer] make the fuzzing timeout 1200 seconds by default (was: infinity) 
llvm-svn: 238251
 2015-05-26 20:57:47 +00:00
Kostya Serebryany
6903bb7921 [lib/Fuzzer] fix docs 
llvm-svn: 238236
 2015-05-26 19:32:52 +00:00
Kostya Serebryany
3afd2456cd [lib/Fuzzer] remove -use_coverage_pairs=1, an experimental feature that is unlikely to ever scale 
llvm-svn: 238063
 2015-05-22 22:47:03 +00:00
Kostya Serebryany
46c887ece3 [lib/Fuzzer] change the meaning of -timeout flag: now timeout is applied to every unit of work separately 
llvm-svn: 237735
 2015-05-19 22:12:57 +00:00
Kostya Serebryany
a98902fdfc [lib/Fuzzer] when -sync_command=<CMD> is given, periodically execute 'CMD CORPUS' to synchronize with other processes 
llvm-svn: 237617
 2015-05-18 21:34:20 +00:00
Kostya Serebryany
31389337e7 [lib/Fuzzer] enable -use_counters=1 by default 
llvm-svn: 237272
 2015-05-13 18:31:46 +00:00
Kostya Serebryany
354905a212 [lib/Fuzzer] guess the right number of workers if -jobs=N is given but -workers=M is not. Update the docs. 
llvm-svn: 237163
 2015-05-12 18:51:57 +00:00