70240430d9
[libFuzzer] remove even more stale code
...
llvm-svn: 297797
2017-03-15 00:39:06 +00:00
862a845aa5
[libFuzzer] simplify code a bit
...
llvm-svn: 297796
2017-03-15 00:34:25 +00:00
f81cc098ca
[libFuzzer] remove more stale code
...
llvm-svn: 297785
2017-03-14 21:47:52 +00:00
a43a299382
[libFuzzer] remove stale code
...
llvm-svn: 297781
2017-03-14 21:30:14 +00:00
41e7a27811
[libFuzzer] remove usage of the old coverage instrumentation
...
llvm-svn: 296536
2017-02-28 23:23:48 +00:00
6ac64c3a6d
[libFuzzer] replace std::random_shuffle with std::shuffle as std::random_shuffle is being deprecated in C++17. Also simplify fuzzer::Random. NFC
...
llvm-svn: 294366
2017-02-07 22:37:34 +00:00
419634bdb8
[libFuzzer] remove a bit of stale code
...
llvm-svn: 293129
2017-01-26 01:45:54 +00:00
15fbf682a1
[libFuzzer] AlrmHandler is executed in a different thread for Windows.
...
Don't check for InFuzzingThread() on Windows, since the AlarmHandler() is
always executed by a different thread from a thread pool.
If we don't add these changes, the alarm handler will never execute.
Note that we decided to ignore possible problem in the synchronization.
Differential Revision: https://reviews.llvm.org/D28723
llvm-svn: 292746
2017-01-22 01:58:59 +00:00
98d592cc91
[libFuzzer] experimental support for 'equivalance fuzzing'
...
llvm-svn: 292646
2017-01-20 20:57:07 +00:00
38b5d3ca54
[libFuzzer] improve -minimize_crash: honor -artifact_prefix= and don't special case 2-byte inputs
...
llvm-svn: 292511
2017-01-19 19:38:12 +00:00
6e47a10ec7
[libFuzzer] add two tests for experimenting with equivalence fuzzing
...
llvm-svn: 292509
2017-01-19 19:07:26 +00:00
4aa0590e33
[libFuzzer] improve error handling during the merge (handle various IO failures)
...
llvm-svn: 291182
2017-01-05 22:05:47 +00:00
11a22bc39d
[libFuzzer] cleaner implementation of -print_pcs=1
...
llvm-svn: 290739
2016-12-30 01:13:07 +00:00
2a8440df70
[libFuzzer] add an experimental flag -experimental_len_control=1 that sets max_len to 1M and tries to increases the actual max sizes of mutations very gradually (second attempt)
...
llvm-svn: 290637
2016-12-27 23:24:55 +00:00
9b415be1bf
[libfuzzer] dump_coverage command line flag
...
Reviewers: kcc, vitalybuka
Differential Revision: https://reviews.llvm.org/D27942
llvm-svn: 290138
2016-12-19 22:18:08 +00:00
fa1030e40b
Revert "[libFuzzer] add an experimental flag -experimental_len_control=1 that sets max_len to 1M and tries to increases the actual max sizes of mutations very gradually. Also remove a bit of dead code"
...
This reverts commit r289998.
See comment:
https://reviews.llvm.org/rL289998
llvm-svn: 290043
2016-12-17 12:27:49 +00:00
3a4e2dd92f
[libFuzzer] avoid msan false positives in more cases
...
llvm-svn: 289999
2016-12-16 22:45:25 +00:00
be7003f99c
[libFuzzer] add an experimental flag -experimental_len_control=1 that sets max_len to 1M and tries to increases the actual max sizes of mutations very gradually. Also remove a bit of dead code
...
llvm-svn: 289998
2016-12-16 22:42:05 +00:00
64d4147396
[libFuzzer] Fix bug in detecting timeouts when input string is empty.
...
I added a new flag RunningCB to know if the Fuzzer's main thread is
running the CB function, instead of using (!CurrentUnitSize).
(!CurrentUnitSize) doesn't work properly. For example, in FuzzerLoop.cpp,
inside ShuffleAndMinimize() function, we execute the callback with an
empty string (size=0). Previous implementation failed to detect timeouts
in that execution.
Also, I add a regression test for that case.
Differential Revision: https://reviews.llvm.org/D27433
llvm-svn: 289561
2016-12-13 17:46:25 +00:00
178fe58745
[libFuzzer] Clean up headers and file formatting of LibFuzzer files.
...
Reorganize #includes to follow LLVM Coding Standards.
Include some missing headers. Required to use `Printf()`.
Aside from that, this patch contains no functional change.
It is purely a re-organization.
Differential Revision: https://reviews.llvm.org/D27363
llvm-svn: 289560
2016-12-13 17:46:11 +00:00
463f8bdd0b
[libFuzzer] Properly use unsigned for Process ID.
...
Use unsigned for PID instead of signed int. GetCurrentProcessId() returns
an unsigned (DWORD) so we must be sure we can deal with all possible values.
I use a long unsigned to be sure it can hold a 32 bit unsigned (DWORD).
Differential Revision: https://reviews.llvm.org/D27281
llvm-svn: 289558
2016-12-13 17:45:44 +00:00
d4be88913e
[libFuzzer] respect -max_len during merge
...
llvm-svn: 289467
2016-12-12 20:39:35 +00:00
fe1094b811
[libFuzzer] refactor the code to allow collecting features in different ways. Also initialize a couple of Fuzzer:: members that might have been used uninitialized :(
...
llvm-svn: 288731
2016-12-05 23:35:22 +00:00
dc6b8ca879
[libFuzzer] treat -rss_limit_mb=0 as no limit
...
llvm-svn: 288389
2016-12-01 17:56:15 +00:00
05f7791fbf
[libFuzzer] extend -rss_limit_mb to crash instantly on a single malloc that exceeds the limit
...
llvm-svn: 288281
2016-11-30 22:39:35 +00:00
24a148b1d4
[LibFuzzer] Split up some functions among different headers.
...
In an effort to get libfuzzer working on Windows, we need to make
a distinction between what functions require platform specific
code (e.g. different code on Windows vs Linux) and what code
doesn't. IO functions, for example, tend to be platform
specific.
This patch separates out some of the functions which will need
to have platform specific implementations into different headers,
so that we can then provide different implementations for each
platform.
Aside from that, this patch contains no functional change. It
is purely a re-organization.
Patch by Marcos Pividori
Differential Revision: https://reviews.llvm.org/D27230
llvm-svn: 288264
2016-11-30 19:06:14 +00:00
2fabecaee3
[libFuzzer] simplify TracePC::HandleTrace even further. Also, when dealing with -exit_on_src_pos, symbolize every PC only once
...
llvm-svn: 285223
2016-10-26 18:52:04 +00:00
06b8757b57
[libFuzzer] simplify the code in TracePC::HandleTrace a bit more
...
llvm-svn: 285147
2016-10-26 00:42:52 +00:00
a5b2e54fcb
[libFuzzer] simplify the code to print new PCs
...
llvm-svn: 285145
2016-10-26 00:20:51 +00:00
275e260258
[libFuzzer] simplify the code in TracePC::HandleTrace
...
llvm-svn: 285142
2016-10-25 23:52:25 +00:00
3364f90783
[libFuzzer] simplify the code for use_cmp, also use the position hint when available, add a test
...
llvm-svn: 285049
2016-10-25 02:04:43 +00:00
ac2a2a86e4
Fix -Wunused-variable warning in libFuzzer
...
llvm-svn: 284838
2016-10-21 16:26:27 +00:00
8dfed45cd4
[libFuzzer] reshuffle the code for -exit_on_src_pos and -exit_on_item
...
llvm-svn: 284508
2016-10-18 18:06:05 +00:00
f9b8e8b117
[libFuzzer] better algorithm for -minimize_crash
...
llvm-svn: 284299
2016-10-15 01:00:24 +00:00
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
0381374f96
[libFuzzer] more detailed message for disabled leak detection
...
llvm-svn: 284169
2016-10-13 22:24:10 +00:00
a17d23eaa7
[libFuzzer] add -trace_malloc= flag
...
llvm-svn: 284149
2016-10-13 19:06:46 +00:00
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
9adc7c8b4a
[libFuzzer] control the reload interval by a flag, make it 10 seconds by default
...
llvm-svn: 283676
2016-10-08 22:12:14 +00:00
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
3b564e9765
[libFuzzer] when re-running for lsan, don't look at the coverage
...
llvm-svn: 283411
2016-10-05 23:31:01 +00:00
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
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
4820cc988f
[libFuzzer] remove dfsan support and some related stale code. This is not being used and as is is pretty weak anyway
...
llvm-svn: 283187
2016-10-04 06:08:46 +00:00
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
90f8f36bca
[libFuzzer] remove some experimental code
...
llvm-svn: 282983
2016-09-30 23:29:27 +00:00
e7e790bad6
[libFuzzer] remove unused option
...
llvm-svn: 282971
2016-09-30 22:29:57 +00:00
b3949ef885
[libFuzzer] remove the code for -print_pcs=1 with the old coverage. It still works with the new one (trace-pc-guard)
...
llvm-svn: 282831
2016-09-30 01:24:57 +00:00
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
a9b0dd0e51
[sanitizer-coverage/libFuzzer] make the guards for trace-pc 32-bit; create one array of guards per function, instead of one guard per BB. reorganize the code so that trace-pc-guard does not create unneeded globals
...
llvm-svn: 282735
2016-09-29 17:43:24 +00:00
Kostya Serebryany