netdev - Re: [PATCH net 3/5] l2tp: fix racy socket lookup in l2tp_ip and l2tp

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Date:   Tue, 29 Nov 2016 13:12:07 +0100
From:   Guillaume Nault <g.nault@...halink.fr>
To:     kbuild test robot <lkp@...el.com>
Cc:     kbuild-all@...org, netdev@...r.kernel.org,
        James Chapman <jchapman@...alix.com>,
        Chris Elston <celston@...alix.com>
Subject: Re: [PATCH net 3/5] l2tp: fix racy socket lookup in l2tp_ip and
 l2tp_ip6 bind()

On Tue, Nov 29, 2016 at 05:10:40AM +0800, kbuild test robot wrote:
> Hi Guillaume,
> 
> [auto build test WARNING on net/master]
> 
> url:    https://github.com/0day-ci/linux/commits/Guillaume-Nault/l2tp-fixes-for-l2tp_ip-and-l2tp_ip6-socket-handling/20161129-043208
> config: x86_64-rhel (attached as .config)
> compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
> reproduce:
>         # save the attached .config to linux build tree
>         make ARCH=x86_64 
> 
> Note: it may well be a FALSE warning. FWIW you are at least aware of it now.
> http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings
> 
> All warnings (new ones prefixed by >>):
> 
>    net/l2tp/l2tp_ip.c: In function 'l2tp_ip_bind':
> >> net/l2tp/l2tp_ip.c:299:9: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized]
>      return ret;
>             ^~~
> 
I should have seen this earlier, sorry.
This is now fixed in v2.