On Tue, Feb 08, 2022 at 03:16:35PM -0600, Bob Pearson wrote: > @@ -62,7 +61,7 @@ static int rxe_mcast_get_grp(struct rxe_dev *rxe, union ib_gid *mgid, > if (rxe->attr.max_mcast_qp_attach == 0) > return -EINVAL; > > - write_lock_bh(&pool->pool_lock); > + spin_lock_bh(&rxe->mcg_lock); > grp = rxe_pool_get_key_locked(pool, mgid); Now this calls rxe_pool_get_key_locked() without the lock :\ This is all fixed up a few patches later, so it only hurts bisect-ability, do you want to fix it? I looked up to 'Remove mcg from rxe pools' and it seems fine to me otherwise Thanks, Jason