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Message-ID: <202601090106.YNZaDPcd-lkp@intel.com>
Date: Fri, 9 Jan 2026 01:42:24 +0100
From: kernel test robot <lkp@...el.com>
To: Samiullah Khawaja <skhawaja@...gle.com>,
David Woodhouse <dwmw2@...radead.org>,
Lu Baolu <baolu.lu@...ux.intel.com>, Joerg Roedel <joro@...tes.org>,
Will Deacon <will@...nel.org>,
Pasha Tatashin <pasha.tatashin@...een.com>,
Jason Gunthorpe <jgg@...pe.ca>, David Matlack <dmatlack@...gle.com>
Cc: oe-kbuild-all@...ts.linux.dev, Samiullah Khawaja <skhawaja@...gle.com>,
Robin Murphy <robin.murphy@....com>,
Pratyush Yadav <pratyush@...nel.org>,
Kevin Tian <kevin.tian@...el.com>,
Alex Williamson <alex@...zbot.org>,
Shuah Khan <skhan@...uxfoundation.org>, iommu@...ts.linux.dev,
linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
Saeed Mahameed <saeedm@...dia.com>,
Adithya Jayachandran <ajayachandra@...dia.com>,
Parav Pandit <parav@...dia.com>,
Leon Romanovsky <leonro@...dia.com>, William Tu <witu@...dia.com>
Subject: Re: [PATCH 3/3] vfio: selftests: Add iommufd hwpt replace test
Hi Samiullah,
kernel test robot noticed the following build warnings:
[auto build test WARNING on 6cd6c12031130a349a098dbeb19d8c3070d2dfbe]
url: https://github.com/intel-lab-lkp/linux/commits/Samiullah-Khawaja/iommu-vt-d-Allow-replacing-no_pasid-iommu_domain/20260108-041955
base: 6cd6c12031130a349a098dbeb19d8c3070d2dfbe
patch link: https://lore.kernel.org/r/20260107201800.2486137-4-skhawaja%40google.com
patch subject: [PATCH 3/3] vfio: selftests: Add iommufd hwpt replace test
config: i386-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20260109/202601090106.YNZaDPcd-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260109/202601090106.YNZaDPcd-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202601090106.YNZaDPcd-lkp@intel.com/
All warnings (new ones prefixed by >>):
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:32:37: note: expanded from macro 'VFIO_ASSERT_EQ'
32 | #define VFIO_ASSERT_EQ(_a, _b, ...) VFIO_ASSERT_OP(_a, _b, ==, ##__VA_ARGS__)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:27:4: note: expanded from macro 'VFIO_ASSERT_OP'
26 | fprintf(stderr, " Observed: %#lx %s %#lx\n", \
| ~~~~
27 | (u64)__lhs, #_op, (u64)__rhs); \
| ^~~~~~~~~~
In file included from tools/testing/selftests/vfio/vfio_iommufd_hwpt_replace_test.c:8:
In file included from tools/testing/selftests/vfio/lib/include/libvfio.h:6:
tools/testing/selftests/vfio/lib/include/libvfio/iommu.h:51:2: warning: format specifies type 'unsigned long' but the argument has type 'u64' (aka 'unsigned long long') [-Wformat]
51 | VFIO_ASSERT_EQ(__iommu_unmap(iommu, region, NULL), 0);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:32:37: note: expanded from macro 'VFIO_ASSERT_EQ'
32 | #define VFIO_ASSERT_EQ(_a, _b, ...) VFIO_ASSERT_OP(_a, _b, ==, ##__VA_ARGS__)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:27:22: note: expanded from macro 'VFIO_ASSERT_OP'
26 | fprintf(stderr, " Observed: %#lx %s %#lx\n", \
| ~~~~
27 | (u64)__lhs, #_op, (u64)__rhs); \
| ^~~~~~~~~~
In file included from tools/testing/selftests/vfio/vfio_iommufd_hwpt_replace_test.c:8:
In file included from tools/testing/selftests/vfio/lib/include/libvfio.h:6:
tools/testing/selftests/vfio/lib/include/libvfio/iommu.h:58:2: warning: format specifies type 'unsigned long' but the argument has type 'u64' (aka 'unsigned long long') [-Wformat]
58 | VFIO_ASSERT_EQ(__iommu_unmap_all(iommu, NULL), 0);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:32:37: note: expanded from macro 'VFIO_ASSERT_EQ'
32 | #define VFIO_ASSERT_EQ(_a, _b, ...) VFIO_ASSERT_OP(_a, _b, ==, ##__VA_ARGS__)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:27:4: note: expanded from macro 'VFIO_ASSERT_OP'
26 | fprintf(stderr, " Observed: %#lx %s %#lx\n", \
| ~~~~
27 | (u64)__lhs, #_op, (u64)__rhs); \
| ^~~~~~~~~~
In file included from tools/testing/selftests/vfio/vfio_iommufd_hwpt_replace_test.c:8:
In file included from tools/testing/selftests/vfio/lib/include/libvfio.h:6:
tools/testing/selftests/vfio/lib/include/libvfio/iommu.h:58:2: warning: format specifies type 'unsigned long' but the argument has type 'u64' (aka 'unsigned long long') [-Wformat]
58 | VFIO_ASSERT_EQ(__iommu_unmap_all(iommu, NULL), 0);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:32:37: note: expanded from macro 'VFIO_ASSERT_EQ'
32 | #define VFIO_ASSERT_EQ(_a, _b, ...) VFIO_ASSERT_OP(_a, _b, ==, ##__VA_ARGS__)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:27:22: note: expanded from macro 'VFIO_ASSERT_OP'
26 | fprintf(stderr, " Observed: %#lx %s %#lx\n", \
| ~~~~
27 | (u64)__lhs, #_op, (u64)__rhs); \
| ^~~~~~~~~~
In file included from tools/testing/selftests/vfio/vfio_iommufd_hwpt_replace_test.c:8:
In file included from tools/testing/selftests/vfio/lib/include/libvfio.h:8:
tools/testing/selftests/vfio/lib/include/libvfio/vfio_pci_device.h:80:2: warning: format specifies type 'unsigned long' but the argument has type 'u64' (aka 'unsigned long long') [-Wformat]
80 | VFIO_ASSERT_NE(r, -1, "F_GETFL failed for fd %d\n", fd);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:33:37: note: expanded from macro 'VFIO_ASSERT_NE'
33 | #define VFIO_ASSERT_NE(_a, _b, ...) VFIO_ASSERT_OP(_a, _b, !=, ##__VA_ARGS__)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:27:4: note: expanded from macro 'VFIO_ASSERT_OP'
26 | fprintf(stderr, " Observed: %#lx %s %#lx\n", \
| ~~~~
27 | (u64)__lhs, #_op, (u64)__rhs); \
| ^~~~~~~~~~
In file included from tools/testing/selftests/vfio/vfio_iommufd_hwpt_replace_test.c:8:
In file included from tools/testing/selftests/vfio/lib/include/libvfio.h:8:
tools/testing/selftests/vfio/lib/include/libvfio/vfio_pci_device.h:80:2: warning: format specifies type 'unsigned long' but the argument has type 'u64' (aka 'unsigned long long') [-Wformat]
80 | VFIO_ASSERT_NE(r, -1, "F_GETFL failed for fd %d\n", fd);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:33:37: note: expanded from macro 'VFIO_ASSERT_NE'
33 | #define VFIO_ASSERT_NE(_a, _b, ...) VFIO_ASSERT_OP(_a, _b, !=, ##__VA_ARGS__)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:27:22: note: expanded from macro 'VFIO_ASSERT_OP'
26 | fprintf(stderr, " Observed: %#lx %s %#lx\n", \
| ~~~~
27 | (u64)__lhs, #_op, (u64)__rhs); \
| ^~~~~~~~~~
In file included from tools/testing/selftests/vfio/vfio_iommufd_hwpt_replace_test.c:8:
In file included from tools/testing/selftests/vfio/lib/include/libvfio.h:8:
tools/testing/selftests/vfio/lib/include/libvfio/vfio_pci_device.h:83:2: warning: format specifies type 'unsigned long' but the argument has type 'u64' (aka 'unsigned long long') [-Wformat]
83 | VFIO_ASSERT_NE(r, -1, "F_SETFL O_NONBLOCK failed for fd %d\n", fd);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:33:37: note: expanded from macro 'VFIO_ASSERT_NE'
33 | #define VFIO_ASSERT_NE(_a, _b, ...) VFIO_ASSERT_OP(_a, _b, !=, ##__VA_ARGS__)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:27:4: note: expanded from macro 'VFIO_ASSERT_OP'
26 | fprintf(stderr, " Observed: %#lx %s %#lx\n", \
| ~~~~
27 | (u64)__lhs, #_op, (u64)__rhs); \
| ^~~~~~~~~~
In file included from tools/testing/selftests/vfio/vfio_iommufd_hwpt_replace_test.c:8:
In file included from tools/testing/selftests/vfio/lib/include/libvfio.h:8:
tools/testing/selftests/vfio/lib/include/libvfio/vfio_pci_device.h:83:2: warning: format specifies type 'unsigned long' but the argument has type 'u64' (aka 'unsigned long long') [-Wformat]
83 | VFIO_ASSERT_NE(r, -1, "F_SETFL O_NONBLOCK failed for fd %d\n", fd);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:33:37: note: expanded from macro 'VFIO_ASSERT_NE'
33 | #define VFIO_ASSERT_NE(_a, _b, ...) VFIO_ASSERT_OP(_a, _b, !=, ##__VA_ARGS__)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:27:22: note: expanded from macro 'VFIO_ASSERT_OP'
26 | fprintf(stderr, " Observed: %#lx %s %#lx\n", \
| ~~~~
27 | (u64)__lhs, #_op, (u64)__rhs); \
| ^~~~~~~~~~
>> tools/testing/selftests/vfio/vfio_iommufd_hwpt_replace_test.c:23:2: warning: format specifies type 'unsigned long' but the argument has type 'u64' (aka 'unsigned long long') [-Wformat]
23 | VFIO_ASSERT_NE(vaddr, MAP_FAILED);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:33:37: note: expanded from macro 'VFIO_ASSERT_NE'
33 | #define VFIO_ASSERT_NE(_a, _b, ...) VFIO_ASSERT_OP(_a, _b, !=, ##__VA_ARGS__)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:27:4: note: expanded from macro 'VFIO_ASSERT_OP'
26 | fprintf(stderr, " Observed: %#lx %s %#lx\n", \
| ~~~~
27 | (u64)__lhs, #_op, (u64)__rhs); \
| ^~~~~~~~~~
>> tools/testing/selftests/vfio/vfio_iommufd_hwpt_replace_test.c:23:2: warning: format specifies type 'unsigned long' but the argument has type 'u64' (aka 'unsigned long long') [-Wformat]
23 | VFIO_ASSERT_NE(vaddr, MAP_FAILED);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:33:37: note: expanded from macro 'VFIO_ASSERT_NE'
33 | #define VFIO_ASSERT_NE(_a, _b, ...) VFIO_ASSERT_OP(_a, _b, !=, ##__VA_ARGS__)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:27:22: note: expanded from macro 'VFIO_ASSERT_OP'
26 | fprintf(stderr, " Observed: %#lx %s %#lx\n", \
| ~~~~
27 | (u64)__lhs, #_op, (u64)__rhs); \
| ^~~~~~~~~~
tools/testing/selftests/vfio/vfio_iommufd_hwpt_replace_test.c:35:2: warning: format specifies type 'unsigned long' but the argument has type 'u64' (aka 'unsigned long long') [-Wformat]
35 | VFIO_ASSERT_EQ(munmap(region->vaddr, region->size), 0);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:32:37: note: expanded from macro 'VFIO_ASSERT_EQ'
32 | #define VFIO_ASSERT_EQ(_a, _b, ...) VFIO_ASSERT_OP(_a, _b, ==, ##__VA_ARGS__)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:27:4: note: expanded from macro 'VFIO_ASSERT_OP'
26 | fprintf(stderr, " Observed: %#lx %s %#lx\n", \
| ~~~~
27 | (u64)__lhs, #_op, (u64)__rhs); \
| ^~~~~~~~~~
tools/testing/selftests/vfio/vfio_iommufd_hwpt_replace_test.c:35:2: warning: format specifies type 'unsigned long' but the argument has type 'u64' (aka 'unsigned long long') [-Wformat]
35 | VFIO_ASSERT_EQ(munmap(region->vaddr, region->size), 0);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:32:37: note: expanded from macro 'VFIO_ASSERT_EQ'
32 | #define VFIO_ASSERT_EQ(_a, _b, ...) VFIO_ASSERT_OP(_a, _b, ==, ##__VA_ARGS__)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tools/testing/selftests/vfio/lib/include/libvfio/assert.h:27:22: note: expanded from macro 'VFIO_ASSERT_OP'
26 | fprintf(stderr, " Observed: %#lx %s %#lx\n", \
| ~~~~
27 | (u64)__lhs, #_op, (u64)__rhs); \
| ^~~~~~~~~~
14 warnings generated.
vim +23 tools/testing/selftests/vfio/vfio_iommufd_hwpt_replace_test.c
13
14 static void region_setup(struct iommu *iommu,
15 struct iova_allocator *iova_allocator,
16 struct dma_region *region, u64 size)
17 {
18 const int flags = MAP_SHARED | MAP_ANONYMOUS;
19 const int prot = PROT_READ | PROT_WRITE;
20 void *vaddr;
21
22 vaddr = mmap(NULL, size, prot, flags, -1, 0);
> 23 VFIO_ASSERT_NE(vaddr, MAP_FAILED);
24
25 region->vaddr = vaddr;
26 region->iova = iova_allocator_alloc(iova_allocator, size);
27 region->size = size;
28
29 iommu_map(iommu, region);
30 }
31
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