netdev - Re: [PATCH V3 for 3.19] rtlwifi: Fix error when accessing unmapped memory in skb

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Message-ID: <87oaqd4pm0.fsf@kamboji.qca.qualcomm.com>
Date:	Mon, 05 Jan 2015 10:07:51 +0200
From:	Kalle Valo <kvalo@...eaurora.org>
To:	Larry Finger <Larry.Finger@...inger.net>
Cc:	linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
	Stable <stable@...r.kernel.org>,
	Eric Biggers <ebiggers3@...il.com>
Subject: Re: [PATCH V3 for 3.19]  rtlwifi: Fix error when accessing unmapped memory in skb

Larry Finger <Larry.Finger@...inger.net> writes:

> These drivers use 9100-byte receive buffers, thus allocating an skb requires
> an O(3) memory allocation. Under heavy memory loads and fragmentation, such
> a request can fail. Previous versions of the driver have dropped the packet
> and reused the old buffer; however, the new version introduced a bug in that
> it released the old buffer before trying to allocate a new one. The previous
> method is implemented here. The skb is unmapped before any attempt is made to
> allocate another.
>
> Signed-off-by: Larry Finger <Larry.Finger@...inger.net>
> Cc: Stable <stable@...r.kernel.org>  [v3.18]
> Reported-by: Eric Biggers <ebiggers3@...il.com>
> Cc: Eric Biggers <ebiggers3@...il.com>

Thanks, applied to wireless-drivers.git.

-- 
Kalle Valo
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