netdev - Re: [PATCH 1/2] net: ipv6: af_inet6: Fix warning when CONFIG

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:	Sat, 16 Nov 2013 19:26:00 +0100
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Vlad Yasevich <vyasevich@...il.com>
Cc:	Fabio Estevam <festevam@...il.com>, davem@...emloft.net,
	netdev@...r.kernel.org, Fabio Estevam <fabio.estevam@...escale.com>
Subject: Re: [PATCH 1/2] net: ipv6: af_inet6: Fix warning when CONFIG_SYSCTL=n

On Sat, Nov 16, 2013 at 01:05:22PM -0500, Vlad Yasevich wrote:
> On 11/15/2013 09:52 PM, Fabio Estevam wrote:
> > From: Fabio Estevam <fabio.estevam@...escale.com>
> > 
> > When CONFIG_SYSCTL=n the following build warning happens:
> > 
> > net/ipv6/af_inet6.c:710:13: warning: 'ipv6_packet_cleanup' defined but not used [-Wunused-function]
> > 
> > ipv6_packet_cleanup() is only used when CONFIG_SYSCTL=y, so protect its 
> > definition with an'ifdef CONFIG_SYSCTL'.
> > 
> > Signed-off-by: Fabio Estevam <fabio.estevam@...escale.com>
> > ---
> >  net/ipv6/af_inet6.c | 2 ++
> >  1 file changed, 2 insertions(+)
> > 
> > diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
> > index ff75313..e4ad65c 100644
> > --- a/net/ipv6/af_inet6.c
> > +++ b/net/ipv6/af_inet6.c
> > @@ -707,10 +707,12 @@ static int __init ipv6_packet_init(void)
> >  	return 0;
> >  }
> >  
> > +#ifdef CONFIG_SYSCTL
> >  static void ipv6_packet_cleanup(void)
> >  {
> >  	dev_remove_pack(&ipv6_packet_type);
> >  }
> > +#endif
> >  
> >  static int __net_init ipv6_init_mibs(struct net *net)
> >  {
> > 
> 
> NACK.  ipv6_packet_init and ipv6_packet_cleanup should in no way depend
> on sysctl.

It is only used in an error path if CONFIG_SYSCTL=y. I agree it does
look a bit odd.

Maybe just add __maybe_unused to ipv6_packet_cleanup?

--
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