diff --git a/fs/bcachefs/movinggc.c b/fs/bcachefs/movinggc.c
index d658be90f..8a6568dc5 100644
--- a/fs/bcachefs/movinggc.c
+++ b/fs/bcachefs/movinggc.c
@@ -327,6 +327,8 @@ static int bch2_copygc_thread(void *arg)
 	u64 last, wait;
 	int ret = 0;
 
+	memset(&ctxt, 0, sizeof(ctxt));
+
 	buckets = kzalloc(sizeof(struct buckets_in_flight), GFP_KERNEL);
 	if (!buckets)
 		return -ENOMEM;