Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
IronPort-SDR: fv/JKpcZkvoELF/6b0gH4PR4o9bFnKsGZg5/7Q4JhASSaQxM+TU5iVfgzjeMwchuKYwoW6zv8l
 8qJ4QfBrvbHg==
IronPort-SDR: G1EOCTgv6ivdainfMXJ36jZjJrd0igJpiHzS5fB6MFjLWm9DM/yQghxLuLQFaLO6rELLdqINov
 PvyMA6W+JMJA==
From:   "Xia, Hui" <hui.xia@intel.com>
To:     Peter Xu <peterx@redhat.com>, lkp <lkp@intel.com>
CC:     Paolo Bonzini <pbonzini@redhat.com>,
        "kbuild-all@lists.01.org" <kbuild-all@lists.01.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: RE: [kbuild-all] Re:
 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4326:17: sparse: struct kvm_vcpu
 Documentation Kbuild Makefile crypto include sound usr <asn:3>
 kvm_get_running_vcpus( ... )
Thread-Topic: [kbuild-all] Re:
 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4326:17: sparse: struct kvm_vcpu
 Documentation Kbuild Makefile crypto include sound usr <asn:3>
 kvm_get_running_vcpus( ... )
Thread-Index: AQHWUNUwohyM0crwK0SxoUz9kQPpxqj9Vi+g
Date:   Wed, 8 Jul 2020 07:54:50 +0000
Message-ID: <MN2PR11MB406475936030EF8A40464EF3E5670@MN2PR11MB4064.namprd11.prod.outlook.com>
References: <202007021746.jJj16Pl8%lkp@intel.com>
 <20200703005840.GC6677@xz-x1>
In-Reply-To: <20200703005840.GC6677@xz-x1>
Accept-Language: en-US
Content-Language: en-US
dlp-product: dlpe-windows
dlp-reaction: no-action
dlp-version: 11.2.0.6
Content-Type: text/plain; charset="iso-2022-jp"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
X-MS-Exchange-CrossTenant-Network-Message-Id: 0514720f-1bea-47b0-77bb-08d82314318f
X-MS-Exchange-CrossTenant-originalarrivaltime: 08 Jul 2020 07:54:50.9589
 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: 46c98d88-e344-4ed4-8496-4ed7712e255d
X-MS-Exchange-CrossTenant-mailboxtype: HOSTED
X-MS-Exchange-CrossTenant-userprincipalname: bId+3Lu2jCH2KzNznKgQw/kVMUokwB0qj15/9qBjbcWOM4MZaUlFowDhwYTU6VWNfcnYkXqnD+E5DioEKzm+pQ==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR11MB3726
X-OriginatorOrg: intel.com
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org


>-----Original Message-----
>From: Peter Xu <peterx@redhat.com>
>Sent: 2020=1B$BG/=1B(B7=1B$B7n=1B(B3=1B$BF|=1B(B 8:59
>To: lkp <lkp@intel.com>
>Cc: Paolo Bonzini <pbonzini@redhat.com>; kbuild-all@lists.01.org; linux-
>kernel@vger.kernel.org
>Subject: [kbuild-all] Re: arch/x86/kvm/../../../virt/kvm/kvm_main.c:4326:1=
7:
>sparse: struct kvm_vcpu Documentation Kbuild Makefile crypto include sound=
 usr
><asn:3> kvm_get_running_vcpus( ... )
>
>On Thu, Jul 02, 2020 at 05:18:48PM +0800, kernel test robot wrote:
>> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.g=
it master
>> head:   cd77006e01b3198c75fb7819b3d0ff89709539bb
>> commit: 7495e22bb165e7030bae4d9c6e84addb5ea17b29 KVM: Move running
>VCPU from ARM to common code
>> date:   5 months ago
>> config: x86_64-randconfig-s031-20200701 (attached as .config)
>> compiler: gcc-9 (Debian 9.3.0-14) 9.3.0
>> reproduce:
>>         # apt-get install sparse
>>         # sparse version: v0.6.2-3-gfa153962-dirty
>>         git checkout 7495e22bb165e7030bae4d9c6e84addb5ea17b29
>>         # save the attached .config to linux build tree
>>         make W=3D1 C=3D1 CF=3D'-fdiagnostic-prefix -D__CHECK_ENDIAN__'
>> ARCH=3Dx86_64
>>
>> If you fix the issue, kindly add following tag as appropriate
>> Reported-by: kernel test robot <lkp@intel.com>
>>
>>
>> sparse warnings: (new ones prefixed by >>)
>>
>>    arch/x86/kvm/../../../virt/kvm/kvm_main.c:3023:57: sparse: sparse: ca=
st
>removes address space '<asn:1>' of expression
>>    arch/x86/kvm/../../../virt/kvm/kvm_main.c:3023:57: sparse: sparse: in=
correct
>type in argument 2 (different address spaces) @@     expected struct
>compat_sigset_t const [noderef] [usertype] <asn:1> *compat @@     got void=
 *
>@@
>>    arch/x86/kvm/../../../virt/kvm/kvm_main.c:3023:57: sparse:     expect=
ed
>struct compat_sigset_t const [noderef] [usertype] <asn:1> *compat
>>    arch/x86/kvm/../../../virt/kvm/kvm_main.c:3023:57: sparse:     got vo=
id *
>>    arch/x86/kvm/../../../virt/kvm/kvm_main.c:4326:17: sparse: sparse: sy=
mbol
>'kvm_get_running_vcpus' redeclared with different type (different address
>spaces):
>> >> arch/x86/kvm/../../../virt/kvm/kvm_main.c:4326:17: sparse:    struct
>kvm_vcpu *[noderef] <asn:3> *extern [addressable] [toplevel]
>kvm_get_running_vcpus( ... )
>>    include/linux/kvm_host.h:1339:26: sparse: note: previously declared a=
s:
>>    include/linux/kvm_host.h:1339:26: sparse:    struct kvm_vcpu [noderef=
] <asn:3>
>**extern [addressable] [toplevel] kvm_get_running_vcpus( ... )
>>
>> vim +4326 arch/x86/kvm/../../../virt/kvm/kvm_main.c
>>
>>   4322
>>   4323	/**
>>   4324	 * kvm_get_running_vcpus - get the per-CPU array of currently run=
ning
>vcpus.
>>   4325	 */
>> > 4326	struct kvm_vcpu * __percpu *kvm_get_running_vcpus(void)
>>   4327	{
>>   4328	        return &kvm_running_vcpu;
>>   4329	}
>>   4330
>
>Not the first time got confused with this report - this seems to have been=
 fixed by
>fcd07f9adc7d ("KVM: let declaration of kvm_get_running_vcpus match
>implementation", 2020-02-28) already...
Hi Peter,
Sorry for inconvenient. Please ignore this report.=20
The wrong report is caused by incorrectly trigger bisection from old base c=
ommit if some branch still based on the old version kernel. We will fix it =
soon. Thanks for reporting this.

--Hui
>
>--
>Peter Xu
>_______________________________________________
>kbuild-all mailing list -- kbuild-all@lists.01.org To unsubscribe send an =
email to
>kbuild-all-leave@lists.01.org