Merge tag 'nvme-6.16-2025-07-17' of git://git.infradead.org/nvme into block-6.16

Pull NVMe fixes from Christoph:

"- revert the cross-controller atomic write size validation that caused
   regressions (Christoph Hellwig)
 - fix endianness of command word prints in nvme_log_err_passthru()
   (John Garry)
 - fix callback lock for TLS handshake (Maurizio Lombardi)
 - fix misaccounting of nvme-mpath inflight I/O (Yu Kuai)
 - fix inconsistent RCU list manipulation in nvme_ns_add_to_ctrl_list()
   (Zheng Qixing)"

* tag 'nvme-6.16-2025-07-17' of git://git.infradead.org/nvme:
  nvmet-tcp: fix callback lock for TLS handshake
  nvme: fix misaccounting of nvme-mpath inflight I/O
  nvme: revert the cross-controller atomic write size validation
  nvme: fix endianness of command word prints in nvme_log_err_passthru()
  nvme: fix inconsistent RCU list manipulation in nvme_ns_add_to_ctrl_list()

Author: axboe

drivers/nvme/host/core.c

@@ -381,12 +381,12 @@ static void nvme_log_err_passthru(struct request *req)
 		nr->status & NVME_SC_MASK,	/* Status Code */
 		nr->status & NVME_STATUS_MORE ? "MORE " : "",
 		nr->status & NVME_STATUS_DNR  ? "DNR "  : "",
-		nr->cmd->common.cdw10,
-		nr->cmd->common.cdw11,
-		nr->cmd->common.cdw12,
-		nr->cmd->common.cdw13,
-		nr->cmd->common.cdw14,
-		nr->cmd->common.cdw15);
+		le32_to_cpu(nr->cmd->common.cdw10),
+		le32_to_cpu(nr->cmd->common.cdw11),
+		le32_to_cpu(nr->cmd->common.cdw12),
+		le32_to_cpu(nr->cmd->common.cdw13),
+		le32_to_cpu(nr->cmd->common.cdw14),
+		le32_to_cpu(nr->cmd->common.cdw15));
 }
 
 enum nvme_disposition {
@@ -764,6 +764,10 @@ blk_status_t nvme_fail_nonready_command(struct nvme_ctrl *ctrl,
 	    !test_bit(NVME_CTRL_FAILFAST_EXPIRED, &ctrl->flags) &&
 	    !blk_noretry_request(rq) && !(rq->cmd_flags & REQ_NVME_MPATH))
 		return BLK_STS_RESOURCE;
+
+	if (!(rq->rq_flags & RQF_DONTPREP))
+		nvme_clear_nvme_request(rq);
+
 	return nvme_host_path_error(rq);
 }
 EXPORT_SYMBOL_GPL(nvme_fail_nonready_command);
@@ -3537,15 +3541,6 @@ static int nvme_init_identify(struct nvme_ctrl *ctrl)
 		if (ret)
 			goto out_free;
 	}
-
-	if (le16_to_cpu(id->awupf) != ctrl->subsys->awupf) {
-		dev_err_ratelimited(ctrl->device,
-			"inconsistent AWUPF, controller not added (%u/%u).\n",
-			le16_to_cpu(id->awupf), ctrl->subsys->awupf);
-		ret = -EINVAL;
-		goto out_free;
-	}
-
 	memcpy(ctrl->subsys->firmware_rev, id->fr,
 	       sizeof(ctrl->subsys->firmware_rev));
 
@@ -4077,7 +4072,7 @@ static void nvme_ns_add_to_ctrl_list(struct nvme_ns *ns)
 			return;
 		}
 	}
-	list_add(&ns->list, &ns->ctrl->namespaces);
+	list_add_rcu(&ns->list, &ns->ctrl->namespaces);
 }
 
 static void nvme_alloc_ns(struct nvme_ctrl *ctrl, struct nvme_ns_info *info)

drivers/nvme/target/tcp.c

@@ -1928,10 +1928,10 @@ static void nvmet_tcp_alloc_queue(struct nvmet_tcp_port *port,
 		struct sock *sk = queue->sock->sk;
 
 		/* Restore the default callbacks before starting upcall */
-		read_lock_bh(&sk->sk_callback_lock);
+		write_lock_bh(&sk->sk_callback_lock);
 		sk->sk_user_data = NULL;
 		sk->sk_data_ready = port->data_ready;
-		read_unlock_bh(&sk->sk_callback_lock);
+		write_unlock_bh(&sk->sk_callback_lock);
 		if (!nvmet_tcp_try_peek_pdu(queue)) {
 			if (!nvmet_tcp_tls_handshake(queue))
 				return;