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158 Commits

Author SHA1 Message Date
Kostya Serebryany 550e9c80a6 [libFuzzer] deprecate -save_minimized_corpus, -merge can be used instead 
llvm-svn: 256086
 2015-12-19 03:42:16 +00:00
Kostya Serebryany bf65644c97 [libFuzzer] split the tests to run them in parallel, remove one redundant test 
llvm-svn: 256085
 2015-12-19 03:35:30 +00:00
Kostya Serebryany 27ab2d759f [libFuzzer] make CrossOver just one of the other mutations 
llvm-svn: 256081
 2015-12-19 02:49:09 +00:00
Kostya Serebryany 14c50288cc [libFuzzer] print successfull mutations sequences 
llvm-svn: 256071
 2015-12-19 01:09:49 +00:00
Peter Collingbourne 16c1978760 Fuzzer: Fix library dependencies. 
Newer versions of libstdc++ (4.9+), as well as libc++, depend directly on
libpthread from the standard library headers, so libfuzzer needs to declare
a standard library dependency.

llvm-svn: 255745
 2015-12-16 02:14:57 +00:00
Mike Aizatsky a1a5c69b57 [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 8617aaaac2 [libFuzzer] don't reload the corpus more than once every second 
llvm-svn: 254824
 2015-12-05 02:09:22 +00:00
Kostya Serebryany 9e48cda9bc [libFuzzer] compute base64 in-process instead of using an external lib. Since libFuzzer should not depend on anything, just re-implement base64 encoder. PR25746 
llvm-svn: 254784
 2015-12-04 22:29:39 +00:00
Mike Aizatsky 71552ce64b Libfuzzer: do not pass null into user function 
Differential Revision: http://reviews.llvm.org/D15098

llvm-svn: 254558
 2015-12-02 22:43:53 +00:00
Kostya Serebryany fba04273b7 [libFuzzer] add a test that is built with -fsanitize-coverage=trace-bb 
llvm-svn: 254484
 2015-12-02 02:49:37 +00:00
Kostya Serebryany 2d0ef14f5d [libFuzzer] add a flag -exact_artifact_path 
llvm-svn: 254100
 2015-11-25 21:40:46 +00:00
Kostya Serebryany b569368a5a [libFuzzer] don't crash when reporting a leak in test_single_input mode 
llvm-svn: 253761
 2015-11-21 03:46:43 +00:00
Kostya Serebryany 4d62322213 [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 2a48c24d77 [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 a9c2387192 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 dc3135db05 [libFuzzer] experimental flag -drill (another search heuristic; Mike Aizatsky's idea) 
llvm-svn: 252838
 2015-11-12 01:02:01 +00:00
Kostya Serebryany b7e286bed7 [libFuzzer] add UninstrumentedTest.cpp (missing from a previous commit) 
llvm-svn: 252658
 2015-11-10 22:02:56 +00:00
Kostya Serebryany 5eab74e9bc [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 b8d0da1386 [libFuzzer] print a bit fewer lines 
llvm-svn: 252123
 2015-11-05 01:19:42 +00:00
Kostya Serebryany e692621a9d [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 856b7afe60 [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 9cc3b0ddb6 [libFuzzer] add -merge flag to merge corpora 
llvm-svn: 251168
 2015-10-24 01:16:40 +00:00
Kostya Serebryany 94660b3c36 [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 2e9fca9f88 [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 09d2a5f6e1 [libFuzzer] more refactoring the code that checks the coverage. NFC 
llvm-svn: 251075
 2015-10-22 22:56:45 +00:00
Kostya Serebryany 007c9b25f4 [libFuzzer] refactoring the code that checks the coverage. NFC 
llvm-svn: 251074
 2015-10-22 22:50:47 +00:00
Kostya Serebryany b36025619c [libFuzzer] remove the deprecated 'tokens' feature 
llvm-svn: 251069
 2015-10-22 21:48:09 +00:00
Craig Topper 2626094fa1 Make a bunch of static arrays const. 
llvm-svn: 250642
 2015-10-18 05:15:34 +00:00
Kostya Serebryany fed509e73d [libFuzzer] add -shuffle flag 
llvm-svn: 250603
 2015-10-17 04:38:26 +00:00
Kostya Serebryany d6edce97fb [libFuzzer] print a stack trace on timeout 
llvm-svn: 250571
 2015-10-16 23:04:31 +00:00
Kostya Serebryany a9da9b48ef [libFuzzer] reduce the size of artifacts printed on the screen 
llvm-svn: 250565
 2015-10-16 22:47:20 +00:00
Kostya Serebryany b91c62b1f3 [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 e95022ac14 [libFuzzer] don't print large artifacts to stderr 
llvm-svn: 249808
 2015-10-09 04:03:14 +00:00
Kostya Serebryany bd5d1cdbb9 [libFuzzer] add -artifact_prefix flag 
llvm-svn: 249807
 2015-10-09 03:57:59 +00:00
Kostya Serebryany 3b804877fd [libFuzzer] fix 32-bit build 
llvm-svn: 249646
 2015-10-08 00:59:25 +00:00
Kostya Serebryany c8cd29fb7e [libFuzzer] trying to fix at-exit hang 
llvm-svn: 249231
 2015-10-03 07:02:05 +00:00
Kostya Serebryany 20bb5e71b2 [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 65d0a1458f [libFuzzer] remove experimental flag and functionality 
llvm-svn: 249194
 2015-10-02 22:00:32 +00:00
Kostya Serebryany b85db178a0 [libFuzzer] add a flag -max_total_time 
llvm-svn: 249181
 2015-10-02 20:47:55 +00:00
Ivan Krasin 95e82d5b48 [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 3287d7a6ed [libFuzzer] Marking exported symbols as visible. Patch by Mike Aizatsky 
llvm-svn: 248954
 2015-09-30 22:22:37 +00:00
Kostya Serebryany dd02f1f8ab [libFuzzer] perform fewer crossover operations compared to plain mutations 
llvm-svn: 247364
 2015-09-11 00:20:58 +00:00
Kostya Serebryany 65f50868e5 [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 a938bcb89a [libFuzzer] add two more variants of FuzzerDriver for convenience 
llvm-svn: 247300
 2015-09-10 16:57:57 +00:00
Ivan Krasin a610cb5ba0 [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 4b82de2e47 [libFuzzer] remove a piece of stale code 
llvm-svn: 247067
 2015-09-08 20:40:10 +00:00
Kostya Serebryany 9cdea94f66 [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 b06fae5ede [libFuzzer] better documentatio for -save_minimized_corpus=1 
llvm-svn: 247033
 2015-09-08 17:43:51 +00:00
Kostya Serebryany 468ed78434 [libFuzzer] remove -iterations as redundant (there is also -num_runs) 
llvm-svn: 247030
 2015-09-08 17:30:35 +00:00
Kostya Serebryany 25425ad920 [libFuzzer] add one more mutator: Mutate_ChangeASCIIInteger 
llvm-svn: 247027
 2015-09-08 17:19:31 +00:00