linux-kernel - [PATCH] NULL check value returned by alloc

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Date:   Wed,  9 Jun 2021 10:11:49 +0100
From:   Dhiraj Shah <find.dhiraj@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     find.dhiraj@...il.com, Marcel Holtmann <marcel@...tmann.org>,
        Johan Hedberg <johan.hedberg@...il.com>,
        Luiz Augusto von Dentz <luiz.dentz@...il.com>,
        linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] NULL check value returned by alloc_skb

Return error ENOMEM if alloc_skb() failed.

Signed-off-by: Dhiraj Shah <find.dhiraj@...il.com>
---
 drivers/bluetooth/virtio_bt.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/bluetooth/virtio_bt.c b/drivers/bluetooth/virtio_bt.c
index c804db7e90f8..5f82574236c0 100644
--- a/drivers/bluetooth/virtio_bt.c
+++ b/drivers/bluetooth/virtio_bt.c
@@ -34,6 +34,8 @@ static int virtbt_add_inbuf(struct virtio_bluetooth *vbt)
 	int err;
 
 	skb = alloc_skb(1000, GFP_KERNEL);
+	if (!skb)
+		return -ENOMEM;
 	sg_init_one(sg, skb->data, 1000);
 
 	err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_KERNEL);
-- 
2.30.1 (Apple Git-130)