netdev - Re: [PATCH] net: dont use __netdev_alloc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Sun, 08 Jul 2012 23:52:53 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	netdev@...r.kernel.org, stefan.bader@...onical.com
Subject: Re: [PATCH] net: dont use __netdev_alloc_skb for bounce buffer

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Mon, 02 Jul 2012 20:36:12 +0200

> From: Eric Dumazet <edumazet@...gle.com>
> 
> commit a1c7fff7e1 (net: netdev_alloc_skb() use build_skb()) broke b44 on
> some 64bit machines.
> 
> It appears b44 and b43 use __netdev_alloc_skb() instead of alloc_skb()
> for their bounce buffers.
> 
> There is no need to add an extra NET_SKB_PAD reservation for bounce
> buffers :
> 
> - In TX path, NET_SKB_PAD is useless
> 
> - In RX path in b44, we force a copy of incoming frames if
>   GFP_DMA allocations were needed.
> 
> Reported-and-bisected-by: Stefan Bader <stefan.bader@...onical.com>
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Applied, thanks Eric.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html