linux-kernel - Re: [PATCH] vhost-scsi: Depend on NET for memcpy

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]

Date:	Thu, 16 May 2013 10:08:48 +0800
From:	Asias He <asias@...hat.com>
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	"Michael S. Tsirkin" <mst@...hat.com>,
	Nicholas Bellinger <nab@...ux-iscsi.org>, kvm@...r.kernel.org,
	virtualization@...ts.linux-foundation.org,
	target-devel@...r.kernel.org,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Randy Dunlap <rdunlap@...radead.org>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH] vhost-scsi: Depend on NET for memcpy_fromiovec

On Wed, May 15, 2013 at 02:47:53PM +0930, Rusty Russell wrote:
> Asias He <asias@...hat.com> writes:
> > scsi.c includes vhost.c which uses memcpy_fromiovec.
> >
> > This patch fixes this build failure.
> >
> >    From Randy Dunlap:
> >    '''
> >    on x86_64:
> >
> >    ERROR: "memcpy_fromiovec" [drivers/vhost/vhost_scsi.ko] undefined!
> >
> >    It needs to depend on NET since net/core/ provides that function.
> >    '''
> 
> Proper fix please.

--verbose please ;-)

Making VHOST_SCSI depends on NET looks weird but this is because vhost
core depends on it. A bunch of patches are cleaning this up. Since MST
wanted do the vhost.ko split up in 3.11, plus your WIP vringh work, so I
wanted the fix for 3.10 as minimum as possible.

Other users are using memcpy_fromiovec and friends outside net. It seems
a good idea to put it in a util library. e.g.  crypto/algif_skcipher.c
which also depends on NET for it.

> Though I can't see why you thought this was a good idea.  Nonetheless, I
> shan't highlight why: I have far too much respect for your intellects
> and abilities.
> 
> No, don't thank me!

Interesting.

> Rusty.

-- 
Asias
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/