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392 Commits

Author SHA1 Message Date
Kostya Serebryany
810d04f0e6 [libFuzzer] add a standalone build script 
llvm-svn: 282321
 2016-09-24 04:00:00 +00:00
Kostya Serebryany
496fab274a [libFuzzer] simplify HandleTrace again, start re-running interesting units and collecting their features. 
llvm-svn: 282316
 2016-09-23 23:51:58 +00:00
Kostya Serebryany
75f28537e8 [libFuzzer] first steps in adding a proper automated test suite based on real-life code: add a script to build RE2 at a revision that has known bugs 
llvm-svn: 282292
 2016-09-23 20:43:22 +00:00
Kostya Serebryany
3818e175e9 [libFuzzer] reset Counters (trace-pc-guard) before every run 
llvm-svn: 282284
 2016-09-23 20:04:13 +00:00
Kostya Serebryany
cc6b86b16e [libFuzzer] be more precise about what we reset in TracePC 
llvm-svn: 282225
 2016-09-23 02:18:59 +00:00
Kostya Serebryany
763d4bc96b [libFuzzer] fix merging with trace-pc-guard 
llvm-svn: 282224
 2016-09-23 01:58:51 +00:00
Kostya Serebryany
5cd1f5a82d [libFuzzer] simplify the TracePC logic 
llvm-svn: 282222
 2016-09-23 01:20:07 +00:00
Kostya Serebryany
1f0aefdb84 [libFuzzer] move value profiling logic into TracePC 
llvm-svn: 282219
 2016-09-23 00:46:18 +00:00
Kostya Serebryany
13b73c7438 [libFuzzer] change ValueBitMap to remember the number of bits in it 
llvm-svn: 282216
 2016-09-23 00:22:46 +00:00
Kostya Serebryany
e7337182e5 [libFuzzer] simplify the crash minimizer; split MaxLen into two: MaxInputLen and MaxMutationLen, allow MaxMutationLen to be less than MaxInputLen 
llvm-svn: 282211
 2016-09-22 23:16:36 +00:00
Kostya Serebryany
21d31d163e [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
59579cf205 [libFuzzer] one more test 
llvm-svn: 282127
 2016-09-22 00:57:29 +00:00
Kostya Serebryany
415d2b3586 [libFuzzer] add stats to the corpus; more refactoring 
llvm-svn: 282121
 2016-09-21 22:42:17 +00:00
Kostya Serebryany
4ce26769cd [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
de353bfbcd [libFuzzer] more refactoring 
llvm-svn: 282113
 2016-09-21 21:17:23 +00:00
Kostya Serebryany
84e4abcb2c [libFuzzer] fix libc++ build 
llvm-svn: 282050
 2016-09-21 03:50:37 +00:00
Kostya Serebryany
4a57719450 [libFuzzer] more refactoring; NFC 
llvm-svn: 282047
 2016-09-21 02:05:39 +00:00
Kostya Serebryany
89cc7aa29b [libFuzzer] refactoring: split the large header into many; NFC 
llvm-svn: 282044
 2016-09-21 01:50:50 +00:00
Kostya Serebryany
5e6a145744 [libFuzzer] refactoring: move the Corpus into a separate class; delete two unused experimental features 
llvm-svn: 282042
 2016-09-21 01:04:43 +00:00
Kostya Serebryany
f108480019 [libFuzzer] use sleep() instead of std::this_thread::sleep_for to avoid coverage from instrumented libc++ 
llvm-svn: 281933
 2016-09-19 20:32:34 +00:00
Kostya Serebryany
637985cabd [libFuzzer] add -print_coverage=1 flag to print coverage directly from libFuzzer 
llvm-svn: 281866
 2016-09-18 21:47:08 +00:00
Kostya Serebryany
ad93add26c [libFuzzer] use 'if guard' instead of 'if guard >= 0' with trace-pc; change the guard type to intptr_t; use separate array for 8-bit counters 
llvm-svn: 281845
 2016-09-18 04:52:23 +00:00
Kostya Serebryany
9e8e432014 [libFuzzer] properly reset the guards when reseting the coverage. Also try to fix check-fuzzer on the bot 
llvm-svn: 281814
 2016-09-17 06:01:55 +00:00
Kostya Serebryany
4b0efbfd4a [libFuzzer] change trace-pc to use 8-byte guards 
llvm-svn: 281810
 2016-09-17 05:04:47 +00:00
Kostya Serebryany
f16ae52160 [libFuzzer] make caller-callee feedback work with trace-pc-guard 
llvm-svn: 281667
 2016-09-15 22:16:15 +00:00
Kostya Serebryany
a4e772ea61 [libFuzzer] fix the build for AFLDriverTest 
llvm-svn: 281633
 2016-09-15 18:10:38 +00:00
Kostya Serebryany
377899e661 [libFuzzer] disable test that requires debug info -- it fails on the bot 
llvm-svn: 281584
 2016-09-15 05:46:58 +00:00
Kostya Serebryany
cce4ba7b97 [libFuzzer] move the AFL driver build rule test into the uninstrumented dir 
llvm-svn: 281583
 2016-09-15 05:17:39 +00:00
Kostya Serebryany
cf1ccdc183 [libFuzzer] fix print_pcs test 
llvm-svn: 281580
 2016-09-15 04:43:06 +00:00
Kostya Serebryany
a166497232 [libFuzzer] implement print_pcs with trace-pc-guard. Change the trace-pc-guard heuristic for 8-bit counters to look more like in AFL (not that it's provable better, but the existin test preferes this heuristic) 
llvm-svn: 281577
 2016-09-15 04:36:45 +00:00
Kostya Serebryany
bd6bd39ccc [libFuzzer] add 8-bit counters to trace-pc-guard handler 
llvm-svn: 281568
 2016-09-15 01:30:18 +00:00
Kostya Serebryany
41b41f51a8 [libFuzzer] start using trace-pc-guard as an alternative source of coverage 
llvm-svn: 281435
 2016-09-14 02:13:06 +00:00
Kostya Serebryany
25c312c38e [libFuzzer] print a failed-merge warning only in the merge mode 
llvm-svn: 281130
 2016-09-10 02:17:22 +00:00
Kostya Serebryany
6727e0c36f [libFuzzer] don't print help for internal flags 
llvm-svn: 281124
 2016-09-10 00:35:30 +00:00
Kostya Serebryany
6b8560d5a5 [libFuzzer] print a visible message if merge fails due to a crash 
llvm-svn: 281122
 2016-09-10 00:15:41 +00:00
Kostya Serebryany
afd27e1acc [libFuzzer] use sizeof() in tests instead of 4 and 8 
llvm-svn: 281111
 2016-09-09 22:21:16 +00:00
Kostya Serebryany
f3e050c251 [libFuzzer] one more puzzle for value profile 
llvm-svn: 281106
 2016-09-09 21:58:42 +00:00
Kostya Serebryany
a73451f514 [libFuzzer] one more puzzle, value_profile cracks it in a second 
llvm-svn: 281066
 2016-09-09 18:00:04 +00:00
Kostya Serebryany
436a6702d5 [libFuzzer] improve -print_pcs to not print new PCs coming from libFuzzer itself 
llvm-svn: 281016
 2016-09-09 02:38:28 +00:00
Kostya Serebryany
df4542584d [libFuzzer] remove unneeded call 
llvm-svn: 281014
 2016-09-09 01:57:38 +00:00
Kostya Serebryany
8d5f2dcf39 [libFuzzer] remove use_traces=1 since use_value_profile seems to be strictly better 
llvm-svn: 281007
 2016-09-09 01:17:03 +00:00
Kostya Serebryany
d575db2f6f [libFuzzer] add -minimize_crash flag (to minimize crashers). also add two tests that I failed to commit last time 
llvm-svn: 280332
 2016-09-01 01:22:27 +00:00
Mike Aizatsky
b9c35c415b [libfuzzer] simplified unit truncation; do not write trunc items to disc 
Differential Revision: https://reviews.llvm.org/D24049

llvm-svn: 280153
 2016-08-30 20:49:07 +00:00
Kostya Serebryany
733e18adcb [libFuzzer] fix a bug when running a single unit of N bytes with -max_len=M, M<N, caused a buffer overflow 
llvm-svn: 280098
 2016-08-30 14:52:05 +00:00
Kostya Serebryany
1d077e5054 [libFuzzer] stop using bits for memcmp's value profile -- seems to blow up the corpus too much 
llvm-svn: 280096
 2016-08-30 14:39:33 +00:00
Kostya Serebryany
3620aadd00 [libFuzzer] use bits instead of bytes for memcmp/strcmp value profile -- the fuzzer reaches the goal much faster, at least on the simple puzzles 
llvm-svn: 280054
 2016-08-30 03:05:50 +00:00
Kostya Serebryany
d305c04722 [libFuzzer] use trace-div and trace-gep for guided fuzzing, add tests 
llvm-svn: 280046
 2016-08-30 01:30:14 +00:00
Kostya Serebryany
70186ece8e [libFuzzer] simplify a test to make it pass on the bot 
llvm-svn: 279796
 2016-08-26 00:18:16 +00:00
Kostya Serebryany
d4cdf49632 [libFuzzer] make sure we have symbols on fuzzer tests 
llvm-svn: 279792
 2016-08-25 23:30:02 +00:00
Kostya Serebryany
25e0e96b53 [libFizzer] rename -print_new_cov_pcs=1 into -print_pcs=1 and make it more useful: print PCs only after the initial corpus has been read and symbolize them 
llvm-svn: 279787
 2016-08-25 22:35:08 +00:00