netdev - Re: [PATCH v2] usbnet: fix oops in usbnet_start

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Message-ID: <20111107173919.GA2730@netboy.at.omicron.at>
Date:	Mon, 7 Nov 2011 18:39:19 +0100
From:	Richard Cochran <richardcochran@...il.com>
To:	Konstantin Khlebnikov <khlebnikov@...nvz.org>
Cc:	Oliver Neukum <oneukum@...e.de>,
	Michael Riesch <michael@...sch.at>,
	Alexey Orishko <alexey.orishko@...il.com>,
	netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
	devel@...nvz.org
Subject: Re: [PATCH v2] usbnet: fix oops in usbnet_start_xmit

On Mon, Nov 07, 2011 at 06:54:58PM +0300, Konstantin Khlebnikov wrote:
> This patch fixes the bug added in commit v3.1-rc7-1055-gf9b491e
> SKB can be NULL at this point, at least for cdc-ncm.
> 
> Signed-off-by: Konstantin Khlebnikov <khlebnikov@...nvz.org>

Acked-by: Richard Cochran <richardcochran@...il.com>

> ---
>  drivers/net/usb/usbnet.c |    3 ++-
>  1 files changed, 2 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
> index 7d60821..fae0fbd 100644
> --- a/drivers/net/usb/usbnet.c
> +++ b/drivers/net/usb/usbnet.c
> @@ -1057,7 +1057,8 @@ netdev_tx_t usbnet_start_xmit (struct sk_buff *skb,
>  	unsigned long		flags;
>  	int retval;
>  
> -	skb_tx_timestamp(skb);
> +	if (skb)
> +		skb_tx_timestamp(skb);
>  
>  	// some devices want funky USB-level framing, for
>  	// win32 driver (usually) and/or hardware quirks
> 
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