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Subject[PATCH 5.1 88/98] scsi: libcxgbi: add a check for NULL pointer in cxgbi_check_route()
Date
[ 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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