diff --git a/drivers/staging/lustre/lnet/selftest/rpc.c b/drivers/staging/lustre/lnet/selftest/rpc.c
index 2e9094bd889f0df6a8e229dc01ad619fee28c820..1f7d9a6248db870b585ba09e8798a8769084f44c 100644
--- a/drivers/staging/lustre/lnet/selftest/rpc.c
+++ b/drivers/staging/lustre/lnet/selftest/rpc.c
@@ -698,6 +698,7 @@ srpc_finish_service(struct srpc_service *sv)
 /* called with sv->sv_lock held */
 static void
 srpc_service_recycle_buffer(struct srpc_service_cd *scd, srpc_buffer_t *buf)
+	__must_hold(&scd->scd_lock)
 {
 	if (!scd->scd_svc->sv_shuttingdown && scd->scd_buf_adjust >= 0) {
 		if (srpc_service_post_buffer(scd, buf) != 0) {