On 2020/1/28 上午11:32, Dan Carpenter wrote:
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
Will fix this. Thanks
If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> 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@xxxxxxxxxxxx Intel Corporation
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