[PATCH] scsi: libcxgbi: add a check for NULL pointer in cxgbi_check_route()

[Varun Prakash]

ip_dev_find() can return NULL so add a check for
NULL pointer.

Signed-off-by: Varun Prakash <va...@chelsio.com>
---
 drivers/scsi/cxgbi/libcxgbi.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/scsi/cxgbi/libcxgbi.c b/drivers/scsi/cxgbi/libcxgbi.c
index 8b915d4..7d43e01 100644
--- a/drivers/scsi/cxgbi/libcxgbi.c
+++ b/drivers/scsi/cxgbi/libcxgbi.c
@@ -639,6 +639,10 @@ cxgbi_check_route(struct sockaddr *dst_addr, int ifindex)
 
        if (ndev->flags & IFF_LOOPBACK) {
                ndev = ip_dev_find(&init_net, daddr->sin_addr.s_addr);
+               if (!ndev) {
+                       err = -ENETUNREACH;
+                       goto rel_neigh;
+               }
                mtu = ndev->mtu;
                pr_info("rt dev %s, loopback -> %s, mtu %u.\n",
                        n->dev->name, ndev->name, mtu);
-- 
2.0.2