netdev - Re: [PATCH] dl2k: Fix potential NULL pointer dereference in receive

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Message-ID: <20240214170203.5bf20e2d@kernel.org>
Date: Wed, 14 Feb 2024 17:02:03 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: Rand Deeb <rand.sec96@...il.com>
Cc: "David S . Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org, deeb.rand@...fident.ru,
 lvc-project@...uxtesting.org, voskresenski.stanislav@...fident.ru
Subject: Re: [PATCH] dl2k: Fix potential NULL pointer dereference in
 receive_packet()

On Tue, 13 Feb 2024 23:09:00 +0300 Rand Deeb wrote:
> +			if (skb == NULL) {

if (!skb) is more common

> +				np->rx_ring[entry].fraginfo = 0;
> +				printk (KERN_INFO
> +				       "%s: receive_packet: "
> +				       "Unable to re-allocate Rx skbuff.#%d\n",
> +				       dev->name, entry);

no prints on allocation failure, please, there logs will include OOM
splats already. A counter as suggested by Jake would be better.
-- 
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