tree 4ad382e6881b360efb6542cc0522a6c71932a275
parent c56b6033bd62a9ebaf4c3a59e505d2e14465ff61
author Kostya Serebryany <kcc@google.com> 1525982341 +0000
committer Copybara-Service <copybara-worker@google.com> 1616739415 -0700

[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
GitOrigin-RevId: f489e2bfef7fca1959ad7e5cb223edc13cc1bc18