From: Rick Farrington <ricardo.farrington@cavium.com>
Date: Mon, 17 Jul 2017 17:51:10 -0700
Subject: liquidio: lowmem: do not dereference null ptr
Patch-mainline: v4.14-rc1
Git-commit: 689062a18c00f49f9c32ac8d5366c075ab691c30
References: bsc#1067126
Don't dereference a NULL ptr in octeon_droq_destroy_ring_buffers().
Signed-off-by: Rick Farrington <ricardo.farrington@cavium.com>
Signed-off-by: Satanand Burla <satananda.burla@cavium.com>
Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/cavium/liquidio/octeon_droq.c | 2 ++
1 file changed, 2 insertions(+)
--- 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
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,