nvme-tcp: fix possible hang waiting for icresp response

If the controller died exactly when we are receiving icresp
we hang because icresp may never return. Make sure to set a
high finite limit.

Fixes: 3f2304f ("nvme-tcp: add NVMe over TCP host driver")
Signed-off-by: Sagi Grimberg <[email protected]>
Signed-off-by: Christoph Hellwig <[email protected]>

Author: sagigrimberg

drivers/nvme/host/tcp.c

@@ -1382,6 +1382,9 @@ static int nvme_tcp_alloc_queue(struct nvme_ctrl *nctrl,
 	if (nctrl->opts->tos >= 0)
 		ip_sock_set_tos(queue->sock->sk, nctrl->opts->tos);
 
+	/* Set 10 seconds timeout for icresp recvmsg */
+	queue->sock->sk->sk_rcvtimeo = 10 * HZ;
+
 	queue->sock->sk->sk_allocation = GFP_ATOMIC;
 	nvme_tcp_set_queue_io_cpu(queue);
 	queue->request = NULL;