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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 <varun@chelsio.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Varun Prakash 2019-05-22 20:10:55 +05:30 committed by Martin K. Petersen
parent 8acf608e60
commit cc55575911
1 changed files with 4 additions and 0 deletions
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4
drivers/scsi/cxgbi/libcxgbi.c
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@ -639,6 +639,10 @@ cxgbi_check_route(struct sockaddr *dst_addr, int ifindex)
if (ndev->flags & IFF_LOOPBACK) { if (ndev->flags & IFF_LOOPBACK) {
ndev = ip_dev_find(&init_net, daddr->sin_addr.s_addr); ndev = ip_dev_find(&init_net, daddr->sin_addr.s_addr);
if (!ndev) {
err = -ENETUNREACH;
goto rel_neigh;
}
mtu = ndev->mtu; mtu = ndev->mtu;
pr_info("rt dev %s, loopback -> %s, mtu %u.\n", pr_info("rt dev %s, loopback -> %s, mtu %u.\n",
n->dev->name, ndev->name, mtu); n->dev->name, ndev->name, mtu);