From: Baolu Lu <baolu.lu@linux.intel.com>
To: Jason Gunthorpe <jgg@nvidia.com>,
bpf@vger.kernel.org, Jonathan Corbet <corbet@lwn.net>,
David Woodhouse <dwmw2@infradead.org>,
iommu@lists.linux.dev, Joerg Roedel <joro@8bytes.org>,
Kevin Tian <kevin.tian@intel.com>,
linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org,
llvm@lists.linux.dev, Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Miguel Ojeda <ojeda@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Shuah Khan <shuah@kernel.org>,
Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>,
Tom Rix <trix@redhat.com>, Will Deacon <will@kernel.org>
Cc: baolu.lu@linux.intel.com,
Alex Williamson <alex.williamson@redhat.com>,
Chaitanya Kulkarni <chaitanyak@nvidia.com>,
Cornelia Huck <cohuck@redhat.com>,
Daniel Jordan <daniel.m.jordan@oracle.com>,
David Gibson <david@gibson.dropbear.id.au>,
Eric Auger <eric.auger@redhat.com>,
Eric Farman <farman@linux.ibm.com>,
Jason Wang <jasowang@redhat.com>,
Jean-Philippe Brucker <jean-philippe@linaro.org>,
Joao Martins <joao.m.martins@oracle.com>,
kvm@vger.kernel.org, Matthew Rosato <mjrosato@linux.ibm.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
Nicolin Chen <nicolinc@nvidia.com>,
Niklas Schnelle <schnelle@linux.ibm.com>,
Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com>,
Yi Liu <yi.l.liu@intel.com>, Keqian Zhu <zhukeqian1@huawei.com>
Subject: Re: [PATCH v3 14/15] iommufd: vfio container FD ioctl compatibility
Date: Sat, 5 Nov 2022 08:07:24 +0800 [thread overview]
Message-ID: <2d2b467b-da07-2b96-27c9-569b727dd8c9@linux.intel.com> (raw)
In-Reply-To: <14-v3-402a7d6459de+24b-iommufd_jgg@nvidia.com>
On 2022/10/26 2:12, Jason Gunthorpe wrote:
> +static int iommufd_fill_cap_iova(struct iommufd_ioas *ioas,
> + struct vfio_info_cap_header __user *cur,
> + size_t avail)
> +{
> + struct vfio_iommu_type1_info_cap_iova_range __user *ucap_iovas =
> + container_of(cur,
> + struct vfio_iommu_type1_info_cap_iova_range __user,
> + header);
> + struct vfio_iommu_type1_info_cap_iova_range cap_iovas = {
> + .header = {
> + .id = VFIO_IOMMU_TYPE1_INFO_CAP_IOVA_RANGE,
> + .version = 1,
> + },
> + };
> + struct interval_tree_span_iter span;
Intel 0day robot reported:
commit: 954c5e0297d664c7f46c628b3151567b53afe153 [14/15] iommufd: vfio
container FD ioctl compatibility
config: m68k-randconfig-s053-20221104 (attached as .config)
compiler: m68k-linux-gcc (GCC) 12.1.0
reproduce:
wget
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross
-O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.4-39-gce1a6720-dirty
git remote add internal-blu2-usb
git://bee.sh.intel.com/git/blu2/usb.git
git fetch --no-tags internal-blu2-usb iommu/iommufd/v3
git checkout 954c5e0297d664c7f46c628b3151567b53afe153
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross
C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=m68k
SHELL=/bin/bash drivers/iommu/iommufd/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
sparse warnings: (new ones prefixed by >>)
>> drivers/iommu/iommufd/vfio_compat.c:294:17: sparse: sparse: cast
removes address space '__user' of expression
vim +/__user +294 drivers/iommu/iommufd/vfio_compat.c
288
289 static int iommufd_fill_cap_iova(struct iommufd_ioas *ioas,
290 struct vfio_info_cap_header __user *cur,
291 size_t avail)
292 {
293 struct vfio_iommu_type1_info_cap_iova_range __user *ucap_iovas =
> 294 container_of(cur,
295 struct vfio_iommu_type1_info_cap_iova_range __user,
296 header);
297 struct vfio_iommu_type1_info_cap_iova_range cap_iovas = {
298 .header = {
299 .id = VFIO_IOMMU_TYPE1_INFO_CAP_IOVA_RANGE,
300 .version = 1,
301 },
302 };
303 struct interval_tree_span_iter span;
304
305 interval_tree_for_each_span(&span, &ioas->iopt.reserved_itree, 0,
306 ULONG_MAX) {
307 struct vfio_iova_range range;
308
309 if (!span.is_hole)
310 continue;
311 range.start = span.start_hole;
312 range.end = span.last_hole;
313 if (avail >= struct_size(&cap_iovas, iova_ranges,
314 cap_iovas.nr_iovas + 1) &&
315 copy_to_user(&ucap_iovas->iova_ranges[cap_iovas.nr_iovas],
316 &range, sizeof(range)))
317 return -EFAULT;
318 cap_iovas.nr_iovas++;
319 }
320 if (avail >= struct_size(&cap_iovas, iova_ranges,
cap_iovas.nr_iovas) &&
321 copy_to_user(ucap_iovas, &cap_iovas, sizeof(cap_iovas)))
322 return -EFAULT;
323 return struct_size(&cap_iovas, iova_ranges, cap_iovas.nr_iovas);
324 }
325
Best regards,
baolu
next prev parent reply other threads:[~2022-11-05 0:07 UTC|newest]
Thread overview: 85+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-25 18:12 [PATCH v3 00/15] IOMMUFD Generic interface Jason Gunthorpe
2022-10-25 18:12 ` [PATCH v3 01/15] iommu: Add IOMMU_CAP_ENFORCE_CACHE_COHERENCY Jason Gunthorpe
2022-10-26 12:45 ` Baolu Lu
2022-11-03 5:03 ` Tian, Kevin
2022-11-04 19:25 ` Jason Gunthorpe
2022-10-25 18:12 ` [PATCH v3 02/15] iommu: Add device-centric DMA ownership interfaces Jason Gunthorpe
2022-11-03 5:11 ` Tian, Kevin
2022-11-04 19:32 ` Jason Gunthorpe
2022-10-25 18:12 ` [PATCH v3 03/15] interval-tree: Add a utility to iterate over spans in an interval tree Jason Gunthorpe
2022-11-03 5:31 ` Tian, Kevin
2022-11-04 19:38 ` Jason Gunthorpe
2022-11-05 1:32 ` Tian, Kevin
2022-11-05 1:48 ` Matthew Wilcox
2022-11-07 14:38 ` Jason Gunthorpe
2022-10-25 18:12 ` [PATCH v3 04/15] iommufd: Overview documentation Jason Gunthorpe
2022-10-26 4:17 ` Bagas Sanjaya
2022-10-28 19:09 ` Jason Gunthorpe
2022-10-25 18:12 ` [PATCH v3 05/15] iommufd: File descriptor, context, kconfig and makefiles Jason Gunthorpe
2022-10-26 12:58 ` Baolu Lu
2022-10-26 17:14 ` Jason Gunthorpe
2022-10-29 3:43 ` Baolu Lu
2022-11-03 7:22 ` Tian, Kevin
2022-11-07 17:00 ` Jason Gunthorpe
2022-10-25 18:12 ` [PATCH v3 06/15] kernel/user: Allow user::locked_vm to be usable for iommufd Jason Gunthorpe
2022-11-03 7:23 ` Tian, Kevin
2022-10-25 18:12 ` [PATCH v3 07/15] iommufd: PFN handling for iopt_pages Jason Gunthorpe
2022-11-01 19:38 ` Nicolin Chen
2022-11-02 13:13 ` Jason Gunthorpe
2022-10-25 18:12 ` [PATCH v3 08/15] iommufd: Algorithms for PFN storage Jason Gunthorpe
2022-10-31 16:01 ` [PATCH v3 8/15] " Jason Gunthorpe
2022-11-01 16:09 ` Jason Gunthorpe
2022-11-03 20:08 ` Jason Gunthorpe
2022-11-04 16:26 ` Jason Gunthorpe
2022-11-04 16:04 ` Jason Gunthorpe
2022-10-25 18:12 ` [PATCH v3 09/15] iommufd: Data structure to provide IOVA to PFN mapping Jason Gunthorpe
2022-10-26 18:46 ` [PATCH v3 9/15] " Jason Gunthorpe
2022-10-27 11:37 ` Jason Gunthorpe
2022-10-27 13:35 ` Jason Gunthorpe
2022-10-28 18:52 ` Jason Gunthorpe
2022-11-01 19:17 ` [PATCH v3 09/15] " Nicolin Chen
2022-11-02 13:11 ` Jason Gunthorpe
2022-10-25 18:12 ` [PATCH v3 10/15] iommufd: IOCTLs for the io_pagetable Jason Gunthorpe
2022-10-26 17:01 ` Jason Gunthorpe
2022-10-26 23:17 ` Jason Gunthorpe
2022-10-29 7:25 ` Baolu Lu
2022-11-07 14:17 ` Jason Gunthorpe
2022-11-04 8:32 ` Tian, Kevin
2022-11-07 15:02 ` Jason Gunthorpe
2022-11-08 2:05 ` Tian, Kevin
2022-11-08 17:29 ` Jason Gunthorpe
2022-11-09 2:50 ` Tian, Kevin
2022-11-09 13:05 ` Jason Gunthorpe
2022-10-25 18:12 ` [PATCH v3 11/15] iommufd: Add a HW pagetable object Jason Gunthorpe
2022-11-04 10:00 ` Tian, Kevin
2022-10-25 18:12 ` [PATCH v3 12/15] iommufd: Add kAPI toward external drivers for physical devices Jason Gunthorpe
2022-10-29 7:19 ` Baolu Lu
2022-11-07 14:14 ` Jason Gunthorpe
2022-11-05 7:17 ` Tian, Kevin
2022-11-07 17:54 ` Jason Gunthorpe
2022-11-08 2:17 ` Tian, Kevin
2022-10-25 18:12 ` [PATCH v3 13/15] iommufd: Add kAPI toward external drivers for kernel access Jason Gunthorpe
2022-10-25 18:12 ` [PATCH v3 14/15] iommufd: vfio container FD ioctl compatibility Jason Gunthorpe
2022-10-27 14:12 ` Jason Gunthorpe
2022-11-01 19:45 ` Nicolin Chen
2022-11-02 13:15 ` Jason Gunthorpe
2022-11-05 0:07 ` Baolu Lu [this message]
2022-11-07 14:23 ` Jason Gunthorpe
2022-11-05 9:31 ` Tian, Kevin
2022-11-07 17:08 ` Jason Gunthorpe
2022-11-07 23:53 ` Tian, Kevin
2022-11-08 0:09 ` Jason Gunthorpe
2022-11-08 0:13 ` Tian, Kevin
2022-11-08 0:17 ` Jason Gunthorpe
2022-10-25 18:12 ` [PATCH v3 15/15] iommufd: Add a selftest Jason Gunthorpe
2022-11-01 20:32 ` Nicolin Chen
2022-11-02 13:17 ` Jason Gunthorpe
2022-11-02 18:49 ` Nathan Chancellor
2022-11-04 1:01 ` Jason Gunthorpe
2022-11-04 5:43 ` Tian, Kevin
2022-11-04 19:42 ` Jason Gunthorpe
2022-10-28 23:57 ` [PATCH v3 00/15] IOMMUFD Generic interface Nicolin Chen
2022-11-04 21:27 ` Alex Williamson
2022-11-04 22:03 ` Alex Williamson
2022-11-07 14:22 ` Jason Gunthorpe
2022-11-07 14:19 ` Jason Gunthorpe
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