From: Varun Prakash varun@chelsio.com
[ Upstream commit cc555759117e8349088e0c5d19f2f2a500bafdbd ]
ip_dev_find() can return NULL so add a check for NULL pointer.
Signed-off-by: Varun Prakash varun@chelsio.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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 2ffe029ff2b6..e974106f2bb5 100644 --- a/drivers/scsi/cxgbi/libcxgbi.c +++ b/drivers/scsi/cxgbi/libcxgbi.c @@ -637,6 +637,10 @@ static struct cxgbi_sock *cxgbi_check_route(struct sockaddr *dst_addr)
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);