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Tue, 28 Jan 2020 03:33:01 +0000 Received: from pps.filterd (aserp3030.oracle.com [127.0.0.1]) by aserp3030.oracle.com (8.16.0.27/8.16.0.27) with SMTP id 00S3SgiB022942; Tue, 28 Jan 2020 03:33:00 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by aserp3030.oracle.com with ESMTP id 2xryuar7cx-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 28 Jan 2020 03:33:00 +0000 Received: from abhmp0004.oracle.com (abhmp0004.oracle.com [141.146.116.10]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 00S3WuGE008383; Tue, 28 Jan 2020 03:32:56 GMT Received: from kadam (/129.205.23.165) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 27 Jan 2020 19:32:52 -0800 Date: Tue, 28 Jan 2020 06:32:15 +0300 From: Dan Carpenter To: kbuild@lists.01.org, Jason Wang Cc: kbuild-all@lists.01.org, mst@redhat.com, jasowang@redhat.com, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, tiwei.bie@intel.com, jgg@mellanox.com, maxime.coquelin@redhat.com, cunming.liang@intel.com, zhihong.wang@intel.com, rob.miller@broadcom.com, xiao.w.wang@intel.com, haotian.wang@sifive.com, lingshan.zhu@intel.com, eperezma@redhat.com, lulu@redhat.com, parav@mellanox.com, kevin.tian@intel.com, stefanha@redhat.com, rdunlap@infradead.org, hch@infradead.org, aadam@redhat.com, jakub.kicinski@netronome.com, jiri@mellanox.com, shahafs@mellanox.com, hanand@xilinx.com, mhabets@solarflare.com Subject: Re: [PATCH 5/5] vdpasim: vDPA device simulator Message-ID: <20200128033215.GO1870@kadam> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200116124231.20253-6-jasowang@redhat.com> User-Agent: Mutt/1.9.4 (2018-02-28) X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9513 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1911140001 definitions=main-2001280026 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9513 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1911140001 definitions=main-2001280026 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hi Jason, url: https://github.com/0day-ci/linux/commits/Jason-Wang/vDPA-support/20200117-170243 base: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next If you fix the issue, kindly add following tag Reported-by: kbuild test robot Reported-by: Dan Carpenter smatch warnings: drivers/virtio/vdpa/vdpa_sim.c:288 vdpasim_alloc_coherent() warn: returning freed memory 'addr' # https://github.com/0day-ci/linux/commit/55047769b3e974d68b2aab5ce0022459b172a23f git remote add linux-review https://github.com/0day-ci/linux git remote update linux-review git checkout 55047769b3e974d68b2aab5ce0022459b172a23f vim +/addr +288 drivers/virtio/vdpa/vdpa_sim.c 55047769b3e974 Jason Wang 2020-01-16 263 static void *vdpasim_alloc_coherent(struct device *dev, size_t size, 55047769b3e974 Jason Wang 2020-01-16 264 dma_addr_t *dma_addr, gfp_t flag, 55047769b3e974 Jason Wang 2020-01-16 265 unsigned long attrs) 55047769b3e974 Jason Wang 2020-01-16 266 { 55047769b3e974 Jason Wang 2020-01-16 267 struct vdpa_device *vdpa = dev_to_vdpa(dev); 55047769b3e974 Jason Wang 2020-01-16 268 struct vdpasim *vdpasim = vdpa_to_sim(vdpa); 55047769b3e974 Jason Wang 2020-01-16 269 struct vhost_iotlb *iommu = vdpasim->iommu; 55047769b3e974 Jason Wang 2020-01-16 270 void *addr = kmalloc(size, flag); 55047769b3e974 Jason Wang 2020-01-16 271 int ret; 55047769b3e974 Jason Wang 2020-01-16 272 55047769b3e974 Jason Wang 2020-01-16 273 if (!addr) 55047769b3e974 Jason Wang 2020-01-16 274 *dma_addr = DMA_MAPPING_ERROR; 55047769b3e974 Jason Wang 2020-01-16 275 else { 55047769b3e974 Jason Wang 2020-01-16 276 u64 pa = virt_to_phys(addr); 55047769b3e974 Jason Wang 2020-01-16 277 55047769b3e974 Jason Wang 2020-01-16 278 ret = vhost_iotlb_add_range(iommu, (u64)pa, 55047769b3e974 Jason Wang 2020-01-16 279 (u64)pa + size - 1, 55047769b3e974 Jason Wang 2020-01-16 280 pa, VHOST_MAP_RW); 55047769b3e974 Jason Wang 2020-01-16 281 if (ret) { 55047769b3e974 Jason Wang 2020-01-16 282 kfree(addr); ^^^^^^^^^^^ 55047769b3e974 Jason Wang 2020-01-16 283 *dma_addr = DMA_MAPPING_ERROR; 55047769b3e974 Jason Wang 2020-01-16 284 } else 55047769b3e974 Jason Wang 2020-01-16 285 *dma_addr = (dma_addr_t)pa; 55047769b3e974 Jason Wang 2020-01-16 286 } 55047769b3e974 Jason Wang 2020-01-16 287 55047769b3e974 Jason Wang 2020-01-16 @288 return addr; ^^^^^^^^^^^^ 55047769b3e974 Jason Wang 2020-01-16 289 } --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation