Fix 0/0 stability feedback for libafl_nyx (#3162)

nathaniel-bennett · web-flow · commit a198b33096c0 · 2025-04-15T14:58:18.000+02:00
diff --git a/libafl/src/stages/calibrate.rs b/libafl/src/stages/calibrate.rs
@@ -254,7 +254,7 @@ where
                 metadata.unstable_entries.insert(item); // Insert newly found items
             }
             metadata.filled_entries_count = map_first_filled_count;
-        } else if !state.has_metadata::<UnstableEntriesMetadata>() {
+        } else if !state.has_metadata::<UnstableEntriesMetadata>() && map_first_filled_count > 0 {
             send_default_stability = true;
             state.add_metadata(UnstableEntriesMetadata::new());
         }

Original file line number	Diff line number	Diff line change
`@@ -254,7 +254,7 @@ where`
`254`	`254`	`metadata.unstable_entries.insert(item); // Insert newly found items`
`255`	`255`	`}`
`256`	`256`	`metadata.filled_entries_count = map_first_filled_count;`
`257`		`- } else if !state.has_metadata::<UnstableEntriesMetadata>() {`
	`257`	`+ } else if !state.has_metadata::<UnstableEntriesMetadata>() && map_first_filled_count > 0 {`
`258`	`258`	`send_default_stability = true;`
`259`	`259`	`state.add_metadata(UnstableEntriesMetadata::new());`
`260`	`260`	`}`