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RDMA/cxgb4: Fix crash when peer address is 0.0.0.0
When using rping -c -a 0.0.0.0 with iw_cxgb4, the system crashes when rdma_connect() is called. ip_dev_find() will return NULL, but pdev is accessed anyway. Checking that pdev is NULL and returning -ENODEV prevents the system from crashing. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com> Acked-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
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@ -1593,6 +1593,10 @@ static int import_ep(struct c4iw_ep *ep, __be32 peer_ip, struct dst_entry *dst,
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struct net_device *pdev;
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pdev = ip_dev_find(&init_net, peer_ip);
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if (!pdev) {
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err = -ENODEV;
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goto out;
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}
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ep->l2t = cxgb4_l2t_get(cdev->rdev.lldi.l2t,
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n, pdev, 0);
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if (!ep->l2t)
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