linux-kernel - [PATCH] IB/hifi1: add a null check of kzalloc_node in hfi1_ipoib_txreq

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Message-Id: <20230227100212.910820-1-void0red@gmail.com>
Date:   Mon, 27 Feb 2023 18:02:12 +0800
From:   void0red <void0red@...il.com>
To:     dennis.dalessandro@...nelisnetworks.com
Cc:     jgg@...pe.ca, leon@...nel.org, linux-rdma@...r.kernel.org,
        linux-kernel@...r.kernel.org, Kang Chen <void0red@...il.com>
Subject: [PATCH] IB/hifi1: add a null check of kzalloc_node in hfi1_ipoib_txreq_init

From: Kang Chen <void0red@...il.com>

kzalloc_node may fails, check it and do the cleanup.

Signed-off-by: Kang Chen <void0red@...il.com>
---
 drivers/infiniband/hw/hfi1/ipoib_tx.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/hfi1/ipoib_tx.c b/drivers/infiniband/hw/hfi1/ipoib_tx.c
index 5d9a7b09c..349eb4139 100644
--- a/drivers/infiniband/hw/hfi1/ipoib_tx.c
+++ b/drivers/infiniband/hw/hfi1/ipoib_tx.c
@@ -737,10 +737,13 @@ int hfi1_ipoib_txreq_init(struct hfi1_ipoib_dev_priv *priv)
 		txq->tx_ring.shift = ilog2(tx_item_size);
 		txq->tx_ring.avail = hfi1_ipoib_ring_hwat(txq);
 		tx_ring = &txq->tx_ring;
-		for (j = 0; j < tx_ring_size; j++)
+		for (j = 0; j < tx_ring_size; j++) {
 			hfi1_txreq_from_idx(tx_ring, j)->sdma_hdr =
 				kzalloc_node(sizeof(*tx->sdma_hdr),
 					     GFP_KERNEL, priv->dd->node);
+			if (!hfi1_txreq_from_idx(tx_ring, j)->sdma_hdr)
+				goto free_txqs;
+		}
 
 		netif_napi_add_tx(dev, &txq->napi, hfi1_ipoib_poll_tx_ring);
 	}
-- 
2.34.1