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108 Commits

Author SHA1 Message Date
Mike Aizatsky
c0d25bf9b8 [libfuzzer] adding std:string to allowed adaptable argument. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@262757 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-03-04 23:18:01 +00:00
Mike Aizatsky
d7ee221d4d [libfuzzer] arbitrary function adapter. 
The adapter automates converting sequence of bytes into arbitrary
arguments.

Differential Revision: http://reviews.llvm.org/D17829

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@262673 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-03-03 23:45:29 +00:00
Kostya Serebryany
7a1dcf9965 [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. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@262415 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-03-01 22:19:21 +00:00
Kostya Serebryany
0b3b8cba94 [libFuzzer] fixing the bot 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@262106 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-02-27 03:14:23 +00:00
Kostya Serebryany
a6b4efd1d0 [libFuzzer] speedup path coverage handling 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@262102 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-02-27 01:50:16 +00:00
Kostya Serebryany
86b1b67565 [libFuzzer] add -print_final_stats=1 flag 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@262084 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-02-26 22:42:23 +00:00
Kostya Serebryany
1ff29eb9ca [libFuzzer] initial implementation of path coverage based on -fsanitize-coverage=trace-pc. This does not scale well yet, but already cracks FullCoverageSetTest in seconds 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@262073 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-02-26 21:33:56 +00:00
Kostya Serebryany
b73d5ba466 [libFuzzer] fix the libFuzzer bot 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@261184 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-02-18 02:02:40 +00:00
Kostya Serebryany
49429cee7f [libFuzzer] don't require seed in fuzzer::Mutate, instead use the global Fuzzer object for fuzzer::Mutate. This makes custom mutators fast 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@260810 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-02-13 06:24:18 +00:00
Kostya Serebryany
efb0cc7640 [libFuzzer] get rid of UserSuppliedFuzzer; NFC 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@260798 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-02-13 03:25:16 +00:00
Kostya Serebryany
728ca1266f [libFuzzer] simplify the code around Random. NFC 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@260797 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-02-13 03:00:53 +00:00
Kostya Serebryany
f71ac00d01 [libFuzzer] remove UserSuppliedFuzzer from the interface (it was a bad idea). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@260796 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-02-13 02:39:30 +00:00
Kostya Serebryany
e6d7e3d948 [libFuzzer] provide a plain C interface for custom mutators (experimental) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@260794 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-02-13 02:29:38 +00:00
Kostya Serebryany
14c6007ab2 [libFuzzer] make -runs=N flag also affect the simple runner (will execute every input N times) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@260649 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-02-12 02:32:03 +00:00
Kostya Serebryany
5a91878f44 [libFuzzer] hot fix a test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@259732 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-02-04 00:12:28 +00:00
Kostya Serebryany
598f7017b4 [libFuzzer] don't write the test unit when a leak is detected (since we don't know which unit causes the leak) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@259731 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-02-04 00:02:17 +00:00
Kostya Serebryany
485551ecaf [libFuzzer] allow passing 1 or more files as individual inputs 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@259459 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-02-02 03:03:47 +00:00
Kostya Serebryany
05de8e95f6 [libFuzzer] fail if the corpus dir does not exist 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@259454 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-02-02 02:07:26 +00:00
Kostya Serebryany
58b3c64b6b [libFuzzer] add -timeout_exitcode option 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@259265 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-01-29 23:30:07 +00:00
Kostya Serebryany
fb614ec4d4 [libFuzzer] re-enable test for -abort_on_timeout=1, this time protecting from ASAN_OPTIONS set outside 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@259263 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-01-29 23:19:00 +00:00
Ivan Krasin
79890da71d Temporary disable broken fuzzer/timeout tests. 
Reviewers: kcc

Differential Revision: http://reviews.llvm.org/D16543

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@258702 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-01-25 19:05:45 +00:00
Kostya Serebryany
d75ddafc2f [libFuzzer] add -abort_on_timeout option 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@258631 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-01-23 19:34:19 +00:00
Ivan Krasin
da57df2854 Use std::piecewise_constant_distribution instead of ad-hoc binary search. 
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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@258571 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-01-22 22:28:27 +00:00
Ivan Krasin
55b3567cb1 Revert r258473 as it's breaking the build with libc++ 
Reviewers: kcc

Differential Revision: http://reviews.llvm.org/D16441

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@258479 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-01-22 03:21:52 +00:00
Ivan Krasin
3e0fdb8944 Use std::piecewise_constant_distribution instead of ad-hoc binary search. 
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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@258473 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-01-22 01:32:34 +00:00
Kostya Serebryany
429a7edf9b [libFuzzer] use std::mt19937 for generating random numbers by default. Fix MyStoll to handle negative values. Use std::any_of instead of std::find_if 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@258178 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-01-19 20:33:57 +00:00
Kostya Serebryany
baa00e52a5 [libFuzzer] replace vector with a simpler data structure in the Dictionaries to avoid memory allocations on hot path 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@257985 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-01-16 03:53:32 +00:00
Kostya Serebryany
1e595319e3 [libFuzzer] introduce LLVMFuzzerInitialize 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@257980 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-01-16 01:23:12 +00:00
Kostya Serebryany
f1af856009 [libFuzzer] do mutations based on memcmp/strcmp interceptors under a separate flag (-use_memcmp, default=1) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@257873 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-01-15 06:24:05 +00:00
Kostya Serebryany
a416b73b12 [libFuzzer] suggest a dictionary to the user of some of the trace-based dictionary entries were successful 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@257736 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-01-14 02:36:44 +00:00
Kostya Serebryany
3888fb079a [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) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@257701 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-01-13 23:02:30 +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
Kostya Serebryany
295ef47f9e [libFuzzer] don't limit memcmp tracing with 8 bytes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@257245 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-01-09 01:39:55 +00:00
Kostya Serebryany
ab240104f0 [libFuzzer] add a position hint to the dictionary-based mutator 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@257013 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-01-07 01:49:35 +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
325442be58 [libFuzzer] make trace-based fuzzing not crash in presence of threads 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256876 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-01-06 00:03:35 +00:00
Kostya Serebryany
cf686ded44 [libFuzzer] split the tests to run them in parallel, remove one redundant test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256085 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-12-19 03:35:30 +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
Mike Aizatsky
6d5ee5a800 [LibFuzzer] Introducing FUZZER_FLAG_UNSIGNED and using it for seeding. 
Differential Revision: http://reviews.llvm.org/D15339

done

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255296 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-12-10 20:41:53 +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
569415a25b [libFuzzer] add a test that is built with -fsanitize-coverage=trace-bb 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@254484 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-12-02 02:49:37 +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
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
f357e6fb5f [libFuzzer] add UninstrumentedTest.cpp (missing from a previous commit) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@252658 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-11-10 22:02:56 +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
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
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
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
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