From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sasha Levin Subject: [PATCH AUTOSEL 5.1 65/70] scsi: libcxgbi: add a check for NULL pointer in cxgbi_check_route() Date: Sat, 8 Jun 2019 07:39:44 -0400 Message-ID: <20190608113950.8033-65-sashal@kernel.org> References: <20190608113950.8033-1-sashal@kernel.org> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20190608113950.8033-1-sashal@kernel.org> Sender: linux-kernel-owner@vger.kernel.org To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Varun Prakash , "Martin K . Petersen" , Sasha Levin , linux-scsi@vger.kernel.org List-Id: linux-scsi@vger.kernel.org From: Varun Prakash [ Upstream commit cc555759117e8349088e0c5d19f2f2a500bafdbd ] ip_dev_find() can return NULL so add a check for NULL pointer. Signed-off-by: Varun Prakash Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- 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 006372b3fba2..a50734f3c486 100644 --- a/drivers/scsi/cxgbi/libcxgbi.c +++ b/drivers/scsi/cxgbi/libcxgbi.c @@ -641,6 +641,10 @@ 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); -- 2.20.1