Commit Graph

14 Commits

Author SHA1 Message Date
Kostya Serebryany a5f94fb6c9 [libFuzzer] add -trace_cmp=1 (guiding mutations based on the observed CMP instructions). This is a reincarnation of the previously deleted -use_traces, but using a different approach for collecting traces. Still a toy, but at least it scales well. Also fix -merge in trace-pc-guard mode
llvm-svn: 284273
2016-10-14 20:20:33 +00:00
Kostya Serebryany c5325ed29d [libFuzzer] when shrinking the corpus, delete evicted files previously created by the current process
llvm-svn: 283682
2016-10-08 23:24:45 +00:00
Kostya Serebryany cd04ec25dd [libFuzzer] fix use-after-free in libFuzzer found by ... fuzzing.
llvm-svn: 283675
2016-10-08 21:57:48 +00:00
Kostya Serebryany 936b1e774f [libFuzzer] be more careful with memory usage, print peak rss in status lines
llvm-svn: 283418
2016-10-06 05:14:00 +00:00
Kostya Serebryany 1c73f1bf27 [libFuzzer] refactoring to make -shrink=1 work for value profile, added a test.
llvm-svn: 283409
2016-10-05 22:56:21 +00:00
Kostya Serebryany 2455f0d013 [libFuzzer] clear the corpus elements if they are evicted (i.e. smaller elements with proper coverage are found). Make sure we never try to mutate empty element. Print the corpus size in bytes in the status lines
llvm-svn: 283279
2016-10-05 00:25:17 +00:00
Kostya Serebryany 5a52a11ce4 [libFuzzer] change the probabilities so that we choose only the inputs that are known to be minimal inputs for at least one coverage feature (works only with -shrink=1 for now)
llvm-svn: 283178
2016-10-04 01:51:44 +00:00
Kostya Serebryany d216922a80 [libFuzzer] implement the -shrink=1 option that tires to make elements of the corpus smaller, off by default
llvm-svn: 282995
2016-10-01 01:04:29 +00:00
Kostya Serebryany 2c55613a08 [libFuzzer] more the feature set to InputCorpus; on feature update, change the feature counter of the old best input
llvm-svn: 282829
2016-09-30 01:19:56 +00:00
Kostya Serebryany 16a145fd0f [libFuzzer] fix merging with trace-pc-guard
llvm-svn: 282224
2016-09-23 01:58:51 +00:00
Kostya Serebryany 624f59f4d8 [libFuzzer] add 'features' to the corpus elements, allow mutations with Size > MaxSize, fix sha1 in corpus stats; various refactorings
llvm-svn: 282129
2016-09-22 01:34:58 +00:00
Kostya Serebryany 29bb664075 [libFuzzer] add stats to the corpus; more refactoring
llvm-svn: 282121
2016-09-21 22:42:17 +00:00
Kostya Serebryany 20801e1b8a [libFuzzer] more refactoring; don't compute sha1sum every time we mutate a unit from the corpus, use the stored one.
llvm-svn: 282115
2016-09-21 21:41:48 +00:00
Kostya Serebryany 6f5a804cdb [libFuzzer] refactoring: split the large header into many; NFC
llvm-svn: 282044
2016-09-21 01:50:50 +00:00