[PATCH v6 2/4] net: moxa: replace build_skb() with netdev_alloc_skb_ip_align() / memcpy()

[David Miller]

From: Jonas Jensen <jonas.jensen at gmail.com>
Date: Mon, 25 Aug 2014 16:22:22 +0200

> build_skb() is used to make skbs out of existing RX ring memory
> which is bad because the RX ring is allocated only once, on probe.
> Memory corruption occur because said memory is reclaimed, i.e.
> __kfree_skb() (and eventually put_page()).
> 
> Replace build_skb() with netdev_alloc_skb_ip_align() and use memcpy().
> 
> Remove SKB_DATA_ALIGN() from RX buffer size while we're at it.
> 
> Addresses https://bugzilla.kernel.org/show_bug.cgi?id=69041
> 
> Signed-off-by: Jonas Jensen <jonas.jensen at gmail.com>

Applied.