netdev - [PATCH net-next] net/mlx5e: kTLS, Avoid kzalloc(GFP

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Message-ID: <20200901143512.25424-1-yuehaibing@huawei.com>
Date:   Tue, 1 Sep 2020 22:35:12 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <borisp@...dia.com>, <saeedm@...dia.com>, <leon@...nel.org>,
        <davem@...emloft.net>, <kuba@...nel.org>, <tariqt@...lanox.com>
CC:     <netdev@...r.kernel.org>, <linux-rdma@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH net-next] net/mlx5e: kTLS, Avoid kzalloc(GFP_KERNEL) under spinlock

A spin lock is held before kzalloc, it may sleep with holding
the spinlock, so we should use GFP_ATOMIC instead.

This is detected by coccinelle.

Fixes: 0419d8c9d8f8 ("net/mlx5e: kTLS, Add kTLS RX resync support")
Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_rx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_rx.c
index acf6d80a6bb7..1a32435acac3 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_rx.c
@@ -247,7 +247,7 @@ resync_post_get_progress_params(struct mlx5e_icosq *sq,
 	int err;
 	u16 pi;
 
-	buf = kzalloc(sizeof(*buf), GFP_KERNEL);
+	buf = kzalloc(sizeof(*buf), GFP_ATOMIC);
 	if (unlikely(!buf)) {
 		err = -ENOMEM;
 		goto err_out;
-- 
2.17.1