From mboxrd@z Thu Jan 1 00:00:00 1970 From: Felix Manlunas Subject: [PATCH v2 net-next 2/3] liquidio: lowmem: do not dereference null ptr Date: Mon, 17 Jul 2017 17:51:10 -0700 Message-ID: <20170718005110.GA1567@felix-thinkpad.cavium.com> References: <20170718004920.GA1541@felix-thinkpad.cavium.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netdev@vger.kernel.org, raghu.vatsavayi@cavium.com, derek.chickles@cavium.com, satananda.burla@cavium.com, ricardo.farrington@cavium.com To: davem@davemloft.net Return-path: Received: from mail-sn1nam01on0054.outbound.protection.outlook.com ([104.47.32.54]:27523 "EHLO NAM01-SN1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751617AbdGRAn2 (ORCPT ); Mon, 17 Jul 2017 20:43:28 -0400 Content-Disposition: inline In-Reply-To: <20170718004920.GA1541@felix-thinkpad.cavium.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Rick Farrington Don't dereference a NULL ptr in octeon_droq_destroy_ring_buffers(). Signed-off-by: Rick Farrington Signed-off-by: Satanand Burla Signed-off-by: Raghu Vatsavayi Signed-off-by: Felix Manlunas --- drivers/net/ethernet/cavium/liquidio/octeon_droq.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_droq.c b/drivers/net/ethernet/cavium/liquidio/octeon_droq.c index 6456683..f7b5d68 100644 --- a/drivers/net/ethernet/cavium/liquidio/octeon_droq.c +++ b/drivers/net/ethernet/cavium/liquidio/octeon_droq.c @@ -145,6 +145,8 @@ octeon_droq_destroy_ring_buffers(struct octeon_device *oct, for (i = 0; i < droq->max_count; i++) { pg_info = &droq->recv_buf_list[i].pg_info; + if (!pg_info) + continue; if (pg_info->dma) lio_unmap_ring(oct->pci_dev, -- 2.9.0