| 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 |
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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 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
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