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-rw-r--r--src/afl-fuzz-run.c2
-rw-r--r--src/afl-fuzz.c15
2 files changed, 14 insertions, 3 deletions
diff --git a/src/afl-fuzz-run.c b/src/afl-fuzz-run.c
index 97cb7415..0b84a542 100644
--- a/src/afl-fuzz-run.c
+++ b/src/afl-fuzz-run.c
@@ -707,6 +707,8 @@ void sync_fuzzers(afl_state_t *afl) {
 
   if (afl->foreign_sync_cnt) read_foreign_testcases(afl, 0);
 
+  afl->last_sync_time = get_cur_time();
+
 }
 
 /* Trim all new test cases to save cycles when doing deterministic checks. The
diff --git a/src/afl-fuzz.c b/src/afl-fuzz.c
index 9137dc23..f83aac9e 100644
--- a/src/afl-fuzz.c
+++ b/src/afl-fuzz.c
@@ -1986,15 +1986,24 @@ int main(int argc, char **argv_orig, char **envp) {
 
         if (unlikely(afl->is_main_node)) {
 
-          if (!(sync_interval_cnt++ % (SYNC_INTERVAL / 3))) {
+          if (unlikely(get_cur_time() >
+                       (SYNC_TIME >> 1) + afl->last_sync_time)) {
 
-            sync_fuzzers(afl);
+            if (!(sync_interval_cnt++ % (SYNC_INTERVAL / 3))) {
+
+              sync_fuzzers(afl);
+
+            }
 
           }
 
         } else {
 
-          if (!(sync_interval_cnt++ % SYNC_INTERVAL)) { sync_fuzzers(afl); }
+          if (unlikely(get_cur_time() > SYNC_TIME + afl->last_sync_time)) {
+
+            if (!(sync_interval_cnt++ % SYNC_INTERVAL)) { sync_fuzzers(afl); }
+
+          }
 
         }