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-rw-r--r--migration/migration.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/migration/migration.c b/migration/migration.c
index 3fb856f6e1..abaf6f9e3d 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -590,8 +590,10 @@ static void process_incoming_migration_co(void *opaque)
         mis->have_colo_incoming_thread = true;
         qemu_coroutine_yield();
 
+        qemu_mutex_unlock_iothread();
         /* Wait checkpoint incoming thread exit before free resource */
         qemu_thread_join(&mis->colo_incoming_thread);
+        qemu_mutex_lock_iothread();
         /* We hold the global iothread lock, so it is safe here */
         colo_release_ram_cache();
     }