24a148b1d4
[LibFuzzer] Split up some functions among different headers.
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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
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llvm-svn: 285223
2016-10-26 18:52:04 +00:00
06b8757b57
[libFuzzer] simplify the code in TracePC::HandleTrace a bit more
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llvm-svn: 285147
2016-10-26 00:42:52 +00:00
a5b2e54fcb
[libFuzzer] simplify the code to print new PCs
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llvm-svn: 285145
2016-10-26 00:20:51 +00:00
275e260258
[libFuzzer] simplify the code in TracePC::HandleTrace
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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
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llvm-svn: 285049
2016-10-25 02:04:43 +00:00
ac2a2a86e4
Fix -Wunused-variable warning in libFuzzer
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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
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llvm-svn: 284508
2016-10-18 18:06:05 +00:00
f9b8e8b117
[libFuzzer] better algorithm for -minimize_crash
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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
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llvm-svn: 284273
2016-10-14 20:20:33 +00:00
0381374f96
[libFuzzer] more detailed message for disabled leak detection
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llvm-svn: 284169
2016-10-13 22:24:10 +00:00
a17d23eaa7
[libFuzzer] add -trace_malloc= flag
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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
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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
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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
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llvm-svn: 283418
2016-10-06 05:14:00 +00:00
3b564e9765
[libFuzzer] when re-running for lsan, don't look at the coverage
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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.
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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
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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
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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
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llvm-svn: 282995
2016-10-01 01:04:29 +00:00
90f8f36bca
[libFuzzer] remove some experimental code
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llvm-svn: 282983
2016-09-30 23:29:27 +00:00
e7e790bad6
[libFuzzer] remove unused option
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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)
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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
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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
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llvm-svn: 282735
2016-09-29 17:43:24 +00:00
5ff481fd9e
[libFuzzer] add -exit_on_src_pos to test libFuzzer itself, add a test script for RE2 that uses this flag
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llvm-svn: 282458
2016-09-27 00:10:20 +00:00
0800b81a21
[libFuzzer] simplify HandleTrace again, start re-running interesting units and collecting their features.
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llvm-svn: 282316
2016-09-23 23:51:58 +00:00
ce1cab169f
[libFuzzer] be more precise about what we reset in TracePC
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llvm-svn: 282225
2016-09-23 02:18:59 +00:00
16a145fd0f
[libFuzzer] fix merging with trace-pc-guard
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llvm-svn: 282224
2016-09-23 01:58:51 +00:00
87a598e19f
[libFuzzer] simplify the TracePC logic
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llvm-svn: 282222
2016-09-23 01:20:07 +00:00
ab73c6924f
[libFuzzer] move value profiling logic into TracePC
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llvm-svn: 282219
2016-09-23 00:46:18 +00:00
d28099de5d
[libFuzzer] change ValueBitMap to remember the number of bits in it
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llvm-svn: 282216
2016-09-23 00:22:46 +00:00
be0ed59cdc
[libFuzzer] simplify the crash minimizer; split MaxLen into two: MaxInputLen and MaxMutationLen, allow MaxMutationLen to be less than MaxInputLen
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llvm-svn: 282211
2016-09-22 23:16:36 +00:00
624f59f4d8
[libFuzzer] add 'features' to the corpus elements, allow mutations with Size > MaxSize, fix sha1 in corpus stats; various refactorings
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llvm-svn: 282129
2016-09-22 01:34:58 +00:00
29bb664075
[libFuzzer] add stats to the corpus; more refactoring
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llvm-svn: 282121
2016-09-21 22:42:17 +00:00
20801e1b8a
[libFuzzer] more refactoring; don't compute sha1sum every time we mutate a unit from the corpus, use the stored one.
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llvm-svn: 282115
2016-09-21 21:41:48 +00:00
6f5a804cdb
[libFuzzer] refactoring: split the large header into many; NFC
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llvm-svn: 282044
2016-09-21 01:50:50 +00:00
09aa01a6f8
[libFuzzer] refactoring: move the Corpus into a separate class; delete two unused experimental features
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llvm-svn: 282042
2016-09-21 01:04:43 +00:00
b706b481ba
[libFuzzer] add -print_coverage=1 flag to print coverage directly from libFuzzer
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llvm-svn: 281866
2016-09-18 21:47:08 +00:00
3e36ec1d18
[libFuzzer] change trace-pc to use 8-byte guards
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llvm-svn: 281810
2016-09-17 05:04:47 +00:00
5350178487
[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)
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llvm-svn: 281577
2016-09-15 04:36:45 +00:00
a5277d59d0
[libFuzzer] add 8-bit counters to trace-pc-guard handler
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llvm-svn: 281568
2016-09-15 01:30:18 +00:00
a00b243c75
[libFuzzer] start using trace-pc-guard as an alternative source of coverage
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llvm-svn: 281435
2016-09-14 02:13:06 +00:00
8c537c556a
[libFuzzer] print a failed-merge warning only in the merge mode
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llvm-svn: 281130
2016-09-10 02:17:22 +00:00
b991cc1f0e
[libFuzzer] print a visible message if merge fails due to a crash
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llvm-svn: 281122
2016-09-10 00:15:41 +00:00
b76a2a5503
[libFuzzer] improve -print_pcs to not print new PCs coming from libFuzzer itself
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llvm-svn: 281016
2016-09-09 02:38:28 +00:00
8ea4f9873b
[libFuzzer] remove unneeded call
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llvm-svn: 281014
2016-09-09 01:57:38 +00:00
b077d3fef2
[libfuzzer] simplified unit truncation; do not write trunc items to disc
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Differential Revision: https://reviews.llvm.org/D24049
llvm-svn: 280153
2016-08-30 20:49:07 +00:00
0f0fa4faf2
[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
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llvm-svn: 279787
2016-08-25 22:35:08 +00:00
f67357c671
[libFuzzer] simplify the code, NFC
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llvm-svn: 279697
2016-08-25 01:25:03 +00:00
Zachary Turner