linux-kernel - RE: [PATCH v17 net-next 1/1] hv_sock: introduce Hyper-V Sockets

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Message-ID: <CO2PR03MB218232E102F17C0E8B3B7764BF080@CO2PR03MB2182.namprd03.prod.outlook.com>
Date:	Wed, 20 Jul 2016 01:48:18 +0000
From:	Dexuan Cui <decui@...rosoft.com>
To:	kbuild test robot <lkp@...el.com>
CC:	"kbuild-all@...org" <kbuild-all@...org>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
	"olaf@...fle.de" <olaf@...fle.de>,
	"apw@...onical.com" <apw@...onical.com>,
	"jasowang@...hat.com" <jasowang@...hat.com>,
	Vitaly Kuznetsov <vkuznets@...hat.com>,
	Cathy Avery <cavery@...hat.com>,
	KY Srinivasan <kys@...rosoft.com>,
	"joe@...ches.com" <joe@...ches.com>,
	Rolf Neugebauer <rolf.neugebauer@...ker.com>,
	"Michal Kubecek" <mkubecek@...e.cz>,
	Haiyang Zhang <haiyangz@...rosoft.com>,
	"Dave Scott" <dave.scott@...ker.com>
Subject: RE: [PATCH v17 net-next 1/1] hv_sock: introduce Hyper-V Sockets

> From: kbuild test robot [mailto:lkp@...el.com]
> Sent: Wednesday, July 20, 2016 1:10
> 
> Hi,
> 
> [auto build test WARNING on net-next/master]
> 
> url:    https://github.com/0day-ci/linux/commits/Dexuan-Cui/introduce-
> Hyper-V-VM-Sockets-hv_sock/20160715-223433
> config: x86_64-randconfig-a0-07191719 (attached as .config)
> compiler: gcc-4.4 (Debian 4.4.7-8) 4.4.7
> reproduce:
>         # save the attached .config to linux build tree
>         make ARCH=x86_64
> 
> All warnings (new ones prefixed by >>):
> 
>    net/hv_sock/af_hvsock.c: In function 'hvsock_open_connection':
>    net/hv_sock/af_hvsock.c:693: warning: 'hvsk' may be used uninitialized in
> this function
>    net/hv_sock/af_hvsock.c:693: warning: 'new_hvsk' may be used
> uninitialized in this function
>    net/hv_sock/af_hvsock.c:697: warning: 'new_sk' may be used uninitialized
> in this function
>    net/hv_sock/af_hvsock.c: In function 'hvsock_sendmsg_wait':
>    net/hv_sock/af_hvsock.c:1053: warning: 'ret' may be used uninitialized in
> this function
> >> net/hv_sock/af_hvsock.o: warning: objtool: hvsock_on_channel_cb()+0x1d:
> function has unreachable instruction

These warnings are all false alarms.

Thanks,
-- Dexuan