From 689062a18c00f49f9c32ac8d5366c075ab691c30 Mon Sep 17 00:00:00 2001 From: Rick Farrington Date: Mon, 17 Jul 2017 17:51:10 -0700 Subject: [PATCH] liquidio: lowmem: do not dereference null ptr 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 Signed-off-by: David S. Miller --- 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 645668339620..f7b5d68eb4cf 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,