linux-kernel - Re: [PATCH 2/8] farsync: Fix confusion about DMA address and buffer offset types

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

Message-ID: <1382935885.3524.38.camel@deadeye.wl.decadent.org.uk>
Date:	Mon, 28 Oct 2013 04:51:25 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	David Miller <davem@...emloft.net>
Cc:	kevin.curtis@...site.co.uk, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH 2/8] farsync: Fix confusion about DMA address and buffer
 offset types

On Mon, 2013-10-28 at 00:26 -0400, David Miller wrote:
> From: Ben Hutchings <ben@...adent.org.uk>
> Date: Sun, 27 Oct 2013 21:51:44 +0000
> 
> > -     dbg(DBG_TX, "In fst_tx_dma %p %p %d\n", skb, mem, len);
> > +     dbg(DBG_TX, "In fst_tx_dma %x %x %d\n", (u32)skb, mem, len);
> 
> Please use %p for the skb pointer instead of casting it (which btw
> will introduce a warning on 64-bit).

skb is the DMA address of the data in the sk_buff.  Yes, this is really
unusual naming.

Ben.

-- 
Ben Hutchings
[W]e found...that it wasn't as easy to get programs right as we had thought.
... I realized that a large part of my life from then on was going to be spent
in finding mistakes in my own programs. - Maurice Wilkes, 1949

Download attachment "signature.asc" of type "application/pgp-signature" (829 bytes)