From eb74a7a8004e8281cda62525bbc1f3bbe7f5d9da Mon Sep 17 00:00:00 2001 From: hexcoder- Date: Sun, 30 May 2021 12:43:30 +0200 Subject: add documentation for AFL_LLVM_THREADSAFE_INST --- instrumentation/README.llvm.md | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'instrumentation/README.llvm.md') diff --git a/instrumentation/README.llvm.md b/instrumentation/README.llvm.md index adce6c1d..a9d51829 100644 --- a/instrumentation/README.llvm.md +++ b/instrumentation/README.llvm.md @@ -144,6 +144,10 @@ is not optimal and was only fixed in llvm 9. You can set this with AFL_LLVM_NOT_ZERO=1 See [README.neverzero.md](README.neverzero.md) +Support for thread safe counters has been added for mode LLVM CLASSIC. +Activate it with `AFL_LLVM_THREADSAFE_INST=1`. The tradeoff is better precision in +multi threaded apps for a slightly higher instrumentation overhead. + ## 4) Snapshot feature To speed up fuzzing you can use a linux loadable kernel module which enables -- cgit 1.4.1