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Revision tags: llvmorg-18.1.8, llvmorg-18.1.7, llvmorg-18.1.6, llvmorg-18.1.5, llvmorg-18.1.4, llvmorg-18.1.3, llvmorg-18.1.2, llvmorg-18.1.1, llvmorg-18.1.0, llvmorg-18.1.0-rc4, llvmorg-18.1.0-rc3, llvmorg-18.1.0-rc2, llvmorg-18.1.0-rc1, llvmorg-19-init, llvmorg-17.0.6, llvmorg-17.0.5, llvmorg-17.0.4, llvmorg-17.0.3, llvmorg-17.0.2, llvmorg-17.0.1, llvmorg-17.0.0, llvmorg-17.0.0-rc4, llvmorg-17.0.0-rc3, llvmorg-17.0.0-rc2, llvmorg-17.0.0-rc1, llvmorg-18-init, llvmorg-16.0.6, llvmorg-16.0.5, llvmorg-16.0.4, llvmorg-16.0.3, llvmorg-16.0.2, llvmorg-16.0.1, llvmorg-16.0.0, llvmorg-16.0.0-rc4, llvmorg-16.0.0-rc3, llvmorg-16.0.0-rc2, llvmorg-16.0.0-rc1, llvmorg-17-init, llvmorg-15.0.7, llvmorg-15.0.6, llvmorg-15.0.5, llvmorg-15.0.4, llvmorg-15.0.3, working, llvmorg-15.0.2, llvmorg-15.0.1, llvmorg-15.0.0, llvmorg-15.0.0-rc3, llvmorg-15.0.0-rc2, llvmorg-15.0.0-rc1, llvmorg-16-init, llvmorg-14.0.6, llvmorg-14.0.5, llvmorg-14.0.4, llvmorg-14.0.3, llvmorg-14.0.2, llvmorg-14.0.1, llvmorg-14.0.0, llvmorg-14.0.0-rc4, llvmorg-14.0.0-rc3, llvmorg-14.0.0-rc2, llvmorg-14.0.0-rc1, llvmorg-15-init, llvmorg-13.0.1, llvmorg-13.0.1-rc3, llvmorg-13.0.1-rc2, llvmorg-13.0.1-rc1, llvmorg-13.0.0, llvmorg-13.0.0-rc4, llvmorg-13.0.0-rc3, llvmorg-13.0.0-rc2, llvmorg-13.0.0-rc1, llvmorg-14-init, llvmorg-12.0.1, llvmorg-12.0.1-rc4, llvmorg-12.0.1-rc3 |
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| #
07055623 |
| 18-Jun-2021 |
George Balatsouras <gbalats@google.com> |
[libfuzzer] Disable failing DFSan-related tests
These have been broken by https://reviews.llvm.org/D104494.
However, `lib/fuzzer/dataflow/` is unused (?) so addressing this is not a priority.
Added
[libfuzzer] Disable failing DFSan-related tests
These have been broken by https://reviews.llvm.org/D104494.
However, `lib/fuzzer/dataflow/` is unused (?) so addressing this is not a priority.
Added TODOs to re-enable them in the future.
Reviewed By: stephan.yichao.zhao
Differential Revision: https://reviews.llvm.org/D104568
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Revision tags: llvmorg-12.0.1-rc2 |
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| #
5b4dda55 |
| 04-Jun-2021 |
George Balatsouras <gbalats@google.com> |
[dfsan] Add full fast8 support
Complete support for fast8:
- amend shadow size and mapping in runtime
- remove fast16 mode and -dfsan-fast-16-labels flag
- remove legacy mode and make fast8 mode the
[dfsan] Add full fast8 support
Complete support for fast8:
- amend shadow size and mapping in runtime
- remove fast16 mode and -dfsan-fast-16-labels flag
- remove legacy mode and make fast8 mode the default
- remove dfsan-fast-8-labels flag
- remove functions in dfsan interface only applicable to legacy
- remove legacy-related instrumentation code and tests
- update documentation.
Reviewed By: stephan.yichao.zhao, browneee
Differential Revision: https://reviews.llvm.org/D103745
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Revision tags: llvmorg-12.0.1-rc1, llvmorg-12.0.0, llvmorg-12.0.0-rc5, llvmorg-12.0.0-rc4, llvmorg-12.0.0-rc3, llvmorg-12.0.0-rc2, llvmorg-11.1.0, llvmorg-11.1.0-rc3, llvmorg-12.0.0-rc1, llvmorg-13-init, llvmorg-11.1.0-rc2, llvmorg-11.1.0-rc1, llvmorg-11.0.1, llvmorg-11.0.1-rc2, llvmorg-11.0.1-rc1, llvmorg-11.0.0, llvmorg-11.0.0-rc6, llvmorg-11.0.0-rc5, llvmorg-11.0.0-rc4, llvmorg-11.0.0-rc3, llvmorg-11.0.0-rc2 |
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| #
e2d0b44a |
| 29-Jul-2020 |
Matt Morehouse <mascasa@google.com> |
[DFSan] Add efficient fast16labels instrumentation mode.
Adds the -fast-16-labels flag, which enables efficient instrumentation
for DFSan when the user needs <=16 labels. The instrumentation
elimin
[DFSan] Add efficient fast16labels instrumentation mode.
Adds the -fast-16-labels flag, which enables efficient instrumentation
for DFSan when the user needs <=16 labels. The instrumentation
eliminates most branches and most calls to __dfsan_union or
__dfsan_union_load.
Reviewed By: vitalybuka
Differential Revision: https://reviews.llvm.org/D84371
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Revision tags: llvmorg-11.0.0-rc1, llvmorg-12-init, llvmorg-10.0.1, llvmorg-10.0.1-rc4, llvmorg-10.0.1-rc3, llvmorg-10.0.1-rc2, llvmorg-10.0.1-rc1, llvmorg-10.0.0, llvmorg-10.0.0-rc6, llvmorg-10.0.0-rc5, llvmorg-10.0.0-rc4, llvmorg-10.0.0-rc3, llvmorg-10.0.0-rc2, llvmorg-10.0.0-rc1, llvmorg-11-init, llvmorg-9.0.1, llvmorg-9.0.1-rc3, llvmorg-9.0.1-rc2, llvmorg-9.0.1-rc1, llvmorg-9.0.0, llvmorg-9.0.0-rc6, llvmorg-9.0.0-rc5, llvmorg-9.0.0-rc4, llvmorg-9.0.0-rc3, llvmorg-9.0.0-rc2, llvmorg-9.0.0-rc1, llvmorg-10-init, llvmorg-8.0.1, llvmorg-8.0.1-rc4, llvmorg-8.0.1-rc3 |
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| #
679669a7 |
| 21-Jun-2019 |
Kostya Serebryany <kcc@google.com> |
[libFuzzer] split DataFlow.cpp into two .cpp files, one of which can be compiled w/o dfsan to speed things up (~25% speedup)
llvm-svn: 364002
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| #
27cf743b |
| 20-Jun-2019 |
Kostya Serebryany <kcc@google.com> |
[libFuzzer] ensure that DFT and autofocus works for C++ (mangled) functions
llvm-svn: 363905
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| #
3f39123d |
| 14-Jun-2019 |
Kostya Serebryany <kcc@google.com> |
[libFuzzer] simplify the DFT trace collection using the new faster DFSan mode that traces up to 16 labels at a time and never runs out of labels. Second attempt. This time with a fix for windows (put
[libFuzzer] simplify the DFT trace collection using the new faster DFSan mode that traces up to 16 labels at a time and never runs out of labels. Second attempt. This time with a fix for windows (putenv instead of setenv))
llvm-svn: 363445
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| #
9bc707c0 |
| 14-Jun-2019 |
Hans Wennborg <hans@hanshq.net> |
Revert r363326 "[libFuzzer] simplify the DFT trace collection using the new faster DFSan mode that traces up to 16 labels at a time and never runs out of labels."
It broke the Windows build:
C:\b\s
Revert r363326 "[libFuzzer] simplify the DFT trace collection using the new faster DFSan mode that traces up to 16 labels at a time and never runs out of labels."
It broke the Windows build:
C:\b\s\w\ir\cache\builder\src\third_party\llvm\compiler-rt\lib\fuzzer\FuzzerDataFlowTrace.cpp(243): error C3861: 'setenv': identifier not found
This also reverts the follow-up r363327.
llvm-svn: 363358
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| #
2fa83cb7 |
| 13-Jun-2019 |
Kostya Serebryany <kcc@google.com> |
[libFuzzer] simplify the DFT trace collection using the new faster DFSan mode that traces up to 16 labels at a time and never runs out of labels.
llvm-svn: 363326
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Revision tags: llvmorg-8.0.1-rc2, llvmorg-8.0.1-rc1 |
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| #
e13eff29 |
| 08-May-2019 |
Kostya Serebryany <kcc@google.com> |
[libFuzzer] DFT: when dumping coverage, also dump the total number of instrumented blocks in a function; update merge_data_flow.py to merge coverage
llvm-svn: 360272
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| #
219b2b3a |
| 08-May-2019 |
Kostya Serebryany <kcc@google.com> |
[libFuzzer] extend the data flow tracer to also produce basic block coverage for every input. An extended test coming in a separte change.
llvm-svn: 360213
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| #
b6e6d3c7 |
| 12-Apr-2019 |
Max Moroz <mmoroz@chromium.org> |
[libFuzzer] Fix DataFlow.cpp logic when tracing long inputs.
Summary:
1. Do not create DFSan labels for the bytes which we do not trace. This is where we run out of labels at the first place.
2. Whe
[libFuzzer] Fix DataFlow.cpp logic when tracing long inputs.
Summary:
1. Do not create DFSan labels for the bytes which we do not trace. This is where we run out of labels at the first place.
2. When dumping the traces on the disk, make sure to offset the label identifiers by the number of the first byte in the trace range.
3. For the last label, make sure to write it at the last position of the trace bit string, as that label represents the input size, not any particular byte.
Also fixed the bug with division in python which I've introduced when migrated the scripts to Python3 (`//` is required for integral division).
Otherwise, the scripts are wasting too much time unsuccessfully trying to
collect and process traces from the long inputs. For more context, see
https://github.com/google/oss-fuzz/issues/1632#issuecomment-481761789
Reviewers: kcc
Reviewed By: kcc
Subscribers: delcypher, #sanitizers, llvm-commits
Tags: #llvm, #sanitizers
Differential Revision: https://reviews.llvm.org/D60538
llvm-svn: 358311
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Revision tags: llvmorg-8.0.0, llvmorg-8.0.0-rc5, llvmorg-8.0.0-rc4, llvmorg-8.0.0-rc3, llvmorg-7.1.0, llvmorg-7.1.0-rc1, llvmorg-8.0.0-rc2, llvmorg-8.0.0-rc1 |
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| #
2946cd70 |
| 19-Jan-2019 |
Chandler Carruth <chandlerc@gmail.com> |
Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.
We understand that people may be surprised that we're moving the header
entirely to discuss the ne
Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.
We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.
Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.
llvm-svn: 351636
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Revision tags: llvmorg-7.0.1, llvmorg-7.0.1-rc3, llvmorg-7.0.1-rc2, llvmorg-7.0.1-rc1, llvmorg-7.0.0, llvmorg-7.0.0-rc3, llvmorg-7.0.0-rc2, llvmorg-7.0.0-rc1, llvmorg-6.0.1, llvmorg-6.0.1-rc3 |
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| #
1fd005f5 |
| 06-Jun-2018 |
Kostya Serebryany <kcc@google.com> |
[libFuzzer] initial implementation of -data_flow_trace. It parses the data flow trace and prints the summary, but doesn't use the information in any other way yet
llvm-svn: 334058
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Revision tags: llvmorg-6.0.1-rc2 |
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| #
4d53b744 |
| 24-May-2018 |
Kostya Serebryany <kcc@google.com> |
[libFuzzer] DataFlow tracer now tags a subset of the input. A separate script merges traces from the subsets
llvm-svn: 333149
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| #
500ca871 |
| 23-May-2018 |
Kostya Serebryany <kcc@google.com> |
[libFuzzer] fix two off-by-ones (!!) in the data flow tracer
llvm-svn: 333142
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| #
49253928 |
| 23-May-2018 |
Kostya Serebryany <kcc@google.com> |
[libFuzzer] change the output format for the DataFlow tracer
llvm-svn: 333122
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| #
f489e2bf |
| 10-May-2018 |
Kostya Serebryany <kcc@google.com> |
[libFuzzer] Experimental data flow tracer for fuzz targets.
Summary:
Experimental data flow tracer for fuzz targets.
Allows to tell which bytes of the input affect which functions of the fuzz target
[libFuzzer] Experimental data flow tracer for fuzz targets.
Summary:
Experimental data flow tracer for fuzz targets.
Allows to tell which bytes of the input affect which functions of the fuzz target.
We previously attempted to use DFSan directly in the libFuzzer process,
and that didn't work nicely.
Now we will try to collect the data flow information for the seed corpus
in a separate process (using this tracer), and then use it in the regular libFuzzer runs.
Reviewers: morehouse, pcc, Dor1s
Reviewed By: morehouse, Dor1s
Subscribers: delcypher, #sanitizers, llvm-commits
Differential Revision: https://reviews.llvm.org/D46666
llvm-svn: 332029
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