From cc555759117e8349088e0c5d19f2f2a500bafdbd Mon Sep 17 00:00:00 2001 From: Varun Prakash Date: Wed, 22 May 2019 20:10:55 +0530 Subject: [PATCH] scsi: libcxgbi: add a check for NULL pointer in cxgbi_check_route() ip_dev_find() can return NULL so add a check for NULL pointer. Signed-off-by: Varun Prakash Signed-off-by: Martin K. Petersen --- 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 8b915d4ed98d..7d43e014bd21 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);