From: Jarek Poplawski <jarkao2@gmail.com>
To: Dan Carpenter <error27@gmail.com>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [patch] hamradio: avoid null deref
Date: Wed, 23 Dec 2009 18:47:46 +0100 [thread overview]
Message-ID: <4B3257C2.2050500@gmail.com> (raw)
In-Reply-To: <20091223132550.GD17923@bicker>
Dan Carpenter wrote, On 12/23/2009 02:25 PM:
> If dev == NULL we shouldn't dereference it.
>
> Signed-off-by: Dan Carpenter <error27@gmail.com>
>
> --- orig/drivers/net/hamradio/bpqether.c 2009-12-22 23:58:56.000000000 +0200
> +++ devel/drivers/net/hamradio/bpqether.c 2009-12-22 23:59:46.000000000 +0200
> @@ -283,7 +283,6 @@ static netdev_tx_t bpq_xmit(struct sk_bu
> bpq = netdev_priv(dev);
>
> if ((dev = bpq_get_ether_dev(dev)) == NULL) {
> - dev->stats.tx_dropped++;
Why not use a separate variable for another dev? This stat
should be helpful for debugging.
Jarek P.
> kfree_skb(skb);
> return NETDEV_TX_OK;
> }
next prev parent reply other threads:[~2009-12-23 17:47 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-23 13:25 [patch] hamradio: avoid null deref Dan Carpenter
2009-12-23 17:47 ` Jarek Poplawski [this message]
2009-12-23 21:32 ` David Miller
2009-12-26 12:38 ` [patch] hamradio: avoid null deref v2 Dan Carpenter
2009-12-27 4:17 ` David Miller
2009-12-28 16:54 ` [patch] hamradio: avoid null deref v3 Dan Carpenter
2010-01-04 5:44 ` David Miller
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