From: kernel test robot <lkp@intel.com>
To: Eric Auger <eric.auger@redhat.com>,
eric.auger.pro@gmail.com, iommu@lists.linux-foundation.org,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
kvmarm@lists.cs.columbia.edu, will@kernel.org, joro@8bytes.org,
maz@kernel.org, robin.murphy@arm.com
Cc: kbuild-all@lists.01.org, clang-built-linux@googlegroups.com
Subject: Re: [PATCH v12 01/15] iommu: Introduce attach/detach_pasid_table API
Date: Mon, 16 Nov 2020 23:14:34 +0800 [thread overview]
Message-ID: <202011162350.aO1ZjJHe-lkp@intel.com> (raw)
In-Reply-To: <20201116104316.31816-2-eric.auger@redhat.com>
[-- Attachment #1: Type: text/plain, Size: 4070 bytes --]
Hi Eric,
I love your patch! Perhaps something to improve:
[auto build test WARNING on iommu/next]
[also build test WARNING on linus/master v5.10-rc4 next-20201116]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Eric-Auger/SMMUv3-Nested-Stage-Setup-IOMMU-part/20201116-185039
base: https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git next
config: arm64-randconfig-r034-20201115 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c044709b8fbea2a9a375e4173a6bd735f6866c0c)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
# https://github.com/0day-ci/linux/commit/54be9a9e014a566f9c7640da201c24cfb1eda06e
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Eric-Auger/SMMUv3-Nested-Stage-Setup-IOMMU-part/20201116-185039
git checkout 54be9a9e014a566f9c7640da201c24cfb1eda06e
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> drivers/iommu/iommu.c:2225:34: warning: overlapping comparisons always evaluate to false [-Wtautological-overlap-compare]
if (pasid_table_data.config < 1 && pasid_table_data.config > 3)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
vim +2225 drivers/iommu/iommu.c
2182
2183 int iommu_uapi_attach_pasid_table(struct iommu_domain *domain,
2184 void __user *uinfo)
2185 {
2186 struct iommu_pasid_table_config pasid_table_data = { 0 };
2187 u32 minsz;
2188
2189 if (unlikely(!domain->ops->attach_pasid_table))
2190 return -ENODEV;
2191
2192 /*
2193 * No new spaces can be added before the variable sized union, the
2194 * minimum size is the offset to the union.
2195 */
2196 minsz = offsetof(struct iommu_pasid_table_config, vendor_data);
2197
2198 /* Copy minsz from user to get flags and argsz */
2199 if (copy_from_user(&pasid_table_data, uinfo, minsz))
2200 return -EFAULT;
2201
2202 /* Fields before the variable size union are mandatory */
2203 if (pasid_table_data.argsz < minsz)
2204 return -EINVAL;
2205
2206 /* PASID and address granu require additional info beyond minsz */
2207 if (pasid_table_data.version != PASID_TABLE_CFG_VERSION_1)
2208 return -EINVAL;
2209 if (pasid_table_data.format == IOMMU_PASID_FORMAT_SMMUV3 &&
2210 pasid_table_data.argsz <
2211 offsetofend(struct iommu_pasid_table_config, vendor_data.smmuv3))
2212 return -EINVAL;
2213
2214 /*
2215 * User might be using a newer UAPI header which has a larger data
2216 * size, we shall support the existing flags within the current
2217 * size. Copy the remaining user data _after_ minsz but not more
2218 * than the current kernel supported size.
2219 */
2220 if (copy_from_user((void *)&pasid_table_data + minsz, uinfo + minsz,
2221 min_t(u32, pasid_table_data.argsz, sizeof(pasid_table_data)) - minsz))
2222 return -EFAULT;
2223
2224 /* Now the argsz is validated, check the content */
> 2225 if (pasid_table_data.config < 1 && pasid_table_data.config > 3)
2226 return -EINVAL;
2227
2228 return domain->ops->attach_pasid_table(domain, &pasid_table_data);
2229 }
2230 EXPORT_SYMBOL_GPL(iommu_uapi_attach_pasid_table);
2231
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 39466 bytes --]
next prev parent reply other threads:[~2020-11-16 15:15 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-16 10:43 [PATCH v12 00/15] SMMUv3 Nested Stage Setup (IOMMU part) Eric Auger
2020-11-16 10:43 ` [PATCH v12 01/15] iommu: Introduce attach/detach_pasid_table API Eric Auger
2020-11-16 15:14 ` kernel test robot [this message]
2020-11-16 10:43 ` [PATCH v12 02/15] iommu: Introduce bind/unbind_guest_msi Eric Auger
2020-11-16 10:43 ` [PATCH v12 03/15] iommu/arm-smmu-v3: Maintain a SID->device structure Eric Auger
2020-11-16 10:43 ` [PATCH v12 04/15] iommu/smmuv3: Dynamically allocate s1_cfg and s2_cfg Eric Auger
2020-11-17 11:39 ` Shameerali Kolothum Thodi
2020-11-17 12:36 ` Auger Eric
2020-11-16 10:43 ` [PATCH v12 05/15] iommu/smmuv3: Get prepared for nested stage support Eric Auger
2020-11-16 10:43 ` [PATCH v12 06/15] iommu/smmuv3: Implement attach/detach_pasid_table Eric Auger
2020-11-16 10:43 ` [PATCH v12 07/15] iommu/smmuv3: Allow stage 1 invalidation with unmanaged ASIDs Eric Auger
2020-11-16 10:43 ` [PATCH v12 08/15] iommu/smmuv3: Implement cache_invalidate Eric Auger
2020-11-16 10:43 ` [PATCH v12 09/15] dma-iommu: Implement NESTED_MSI cookie Eric Auger
2020-11-16 10:43 ` [PATCH v12 10/15] iommu/smmuv3: Nested mode single MSI doorbell per domain enforcement Eric Auger
2020-11-16 10:43 ` [PATCH v12 11/15] iommu/smmuv3: Enforce incompatibility between nested mode and HW MSI regions Eric Auger
2020-11-16 10:43 ` [PATCH v12 12/15] iommu/smmuv3: Implement bind/unbind_guest_msi Eric Auger
2020-11-16 10:43 ` [PATCH v12 13/15] iommu/smmuv3: Report non recoverable faults Eric Auger
2020-11-16 10:43 ` [PATCH v12 14/15] iommu/smmuv3: Accept configs with more than one context descriptor Eric Auger
2020-11-16 10:43 ` [PATCH v12 15/15] iommu/smmuv3: Add PASID cache invalidation per PASID Eric Auger
2020-11-16 16:24 ` kernel test robot
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=202011162350.aO1ZjJHe-lkp@intel.com \
--to=lkp@intel.com \
--cc=clang-built-linux@googlegroups.com \
--cc=eric.auger.pro@gmail.com \
--cc=eric.auger@redhat.com \
--cc=iommu@lists.linux-foundation.org \
--cc=joro@8bytes.org \
--cc=kbuild-all@lists.01.org \
--cc=kvm@vger.kernel.org \
--cc=kvmarm@lists.cs.columbia.edu \
--cc=linux-kernel@vger.kernel.org \
--cc=maz@kernel.org \
--cc=robin.murphy@arm.com \
--cc=will@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).