onlinesign: fix of 2fff1e96 fix race cond

src/knot/modules/onlinesign/onlinesign.c

@@ -250,7 +250,10 @@ static knot_rrset_t *sign_rrset(const knot_dname_t *owner,
 		return NULL;
 	}
 
+	online_sign_ctx_t *ctx = knotd_mod_ctx(mod);
+	pthread_rwlock_rdlock(&ctx->signing_mutex);
 	int ret = knotd_mod_dnssec_sign_rrset(mod, rrsig, copy, mm);
+	pthread_rwlock_unlock(&ctx->signing_mutex);
 	if (ret != KNOT_EOK) {
 		knot_rrset_free(copy, NULL);
 		knot_rrset_free(rrsig, mm);

tests-extra/tests/modules/onlinesign_rollovers/test.py

@@ -154,7 +154,7 @@ def watch_ksk_rollover(t, server, zone, before_keys, after_keys, total_keys, des
     wait_for_dnskey_count(t, server, after_keys, 20)
     check_zone(server, zone, after_keys, 1, 1, 1, desc + ": old key removed")
 
-t = Test()
+t = Test(stress=False)
 
 ModOnlineSign.check()