From 46b87a6d62d546c4d09f14cfc9ced6b2bd02e7c6 Mon Sep 17 00:00:00 2001 From: Fahnenfluchtige Date: Thu, 21 Nov 2024 17:36:30 +0300 Subject: [PATCH] adding details --- docs/env_variables.md | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/docs/env_variables.md b/docs/env_variables.md index 3cd82078..8de2359d 100644 --- a/docs/env_variables.md +++ b/docs/env_variables.md @@ -115,7 +115,9 @@ fairly broad use of environment variables instead: - `AFL_USE_TSAN=1` - activates the thread sanitizer to find thread race conditions - `AFL_USE_UBSAN=1` - activates the undefined behavior sanitizer - - `AFL_UBSAN_VERBOSE=1` - outputs detailed diagnostic information when undefined behavior is detected, instead of simply terminating with "Illegal Instruction" + - `AFL_UBSAN_VERBOSE=1` - outputs detailed diagnostic information when undefined behavior is detected, instead of simply terminating with "Illegal Instruction" + + - Note: both `AFL_CFISAN_VERBOSE=1` and `AFL_UBSAN_VERBOSE=1` are disabled by default as verbose output can significantly slow down fuzzing performance. Use these options only during debugging or when additional crash diagnostics are required - `TMPDIR` is used by afl-as for temporary files; if this variable is not set, the tool defaults to /tmp.