Add config option to disable pt tracing

config/src/config.rs

@@ -249,7 +249,10 @@ pub struct RuntimeConfig {
     aux_buffer_size: usize,
 
     /* The path to which nyx logs will be written to from QEMU-Nyx (requires debug mode in QEMU-Nyx) */
-    nyx_debug_log_path: Option<String>
+    nyx_debug_log_path: Option<String>,
+
+    /* Whether pt tracing will be enabled. */
+    pt_enabled: bool,
 }
 
 impl RuntimeConfig{
@@ -261,7 +264,8 @@ impl RuntimeConfig{
             debug_mode: false,
             worker_id: 0,
             aux_buffer_size: DEFAULT_AUX_BUFFER_SIZE,
-            nyx_debug_log_path: None
+            nyx_debug_log_path: None,
+            pt_enabled: true,
         }
     }
 
@@ -333,7 +337,14 @@ impl RuntimeConfig{
     pub fn nyx_debug_log_path(&self) -> Option<&str> {
         self.nyx_debug_log_path.as_deref()
     }
-    
+
+    pub fn set_pt_enabled(&mut self, enabled: bool) {
+        self.pt_enabled = enabled;
+    }
+
+    pub fn pt_enabled(&self) -> bool {
+        self.pt_enabled
+    }
 }
 
 #[derive(Clone, Debug)]

fuzz_runner/src/nyx/params.rs

@@ -108,6 +108,7 @@ impl QemuParams {
             fuzzer_config.runtime.aux_buffer_size()
         );
         nyx_ops += &format!(",dump_pt_trace={}", true);
+        nyx_ops += &format!(",global_pt_enable={}", fuzzer_config.runtime.pt_enabled());
 
         let mut i = 0;
         for filter in fuzzer_config.fuzz.ipt_filters {

libnyx/src/lib.rs

@@ -99,7 +99,8 @@ impl NyxConfig {
         println!("  - input_buffer_size             -> {}", self.input_buffer_size());
         println!("  - input_buffer_write_protection -> {}", self.input_buffer_write_protection());
         println!("  - hprintf_fd                    -> {}", self.hprintf_fd());
-        println!("  - process_role:                 -> {:?}", self.process_role());         
+        println!("  - process_role:                 -> {:?}", self.process_role());
+        println!("  - pt_enabled:                    -> {}", self.pt_enabled());
 
     }
 
@@ -249,6 +250,14 @@ impl NyxConfig {
         self.config.runtime.nyx_debug_log_path()
     }
 
+    pub fn set_pt_enabled(&mut self, enabled: bool) {
+        self.config.runtime.set_pt_enabled(enabled);
+    }
+
+    pub fn pt_enabled(&self) -> bool {
+        self.config.runtime.pt_enabled()
+    }
+
     pub fn dict(&self) -> Vec<Vec<u8>> {
         self.config.fuzz.dict.clone()
     }