iommufd_mock iommufd_mock0: Adding to iommu group 0
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BUG: KMSAN: uninit-value in batch_add_pfn_num drivers/iommu/iommufd/pages.c:365 [inline]
BUG: KMSAN: uninit-value in batch_add_pfn drivers/iommu/iommufd/pages.c:398 [inline]
BUG: KMSAN: uninit-value in batch_from_pages drivers/iommu/iommufd/pages.c:658 [inline]
BUG: KMSAN: uninit-value in pfn_reader_fill_span drivers/iommu/iommufd/pages.c:1220 [inline]
BUG: KMSAN: uninit-value in pfn_reader_next+0x1d5a/0x3e50 drivers/iommu/iommufd/pages.c:1247
 batch_add_pfn_num drivers/iommu/iommufd/pages.c:365 [inline]
 batch_add_pfn drivers/iommu/iommufd/pages.c:398 [inline]
 batch_from_pages drivers/iommu/iommufd/pages.c:658 [inline]
 pfn_reader_fill_span drivers/iommu/iommufd/pages.c:1220 [inline]
 pfn_reader_next+0x1d5a/0x3e50 drivers/iommu/iommufd/pages.c:1247
 pfn_reader_first+0xbcf/0xee0 drivers/iommu/iommufd/pages.c:1354
 iopt_area_fill_domain+0x19b/0xc80 drivers/iommu/iommufd/pages.c:1851
 iopt_fill_domain drivers/iommu/iommufd/io_pagetable.c:1063 [inline]
 iopt_table_add_domain+0xe15/0x1c00 drivers/iommu/iommufd/io_pagetable.c:1189
 iommufd_hwpt_paging_alloc+0xd2b/0xea0 drivers/iommu/iommufd/hw_pagetable.c:200
 iommufd_device_auto_get_domain drivers/iommu/iommufd/device.c:910 [inline]
 iommufd_device_change_pt+0xe22/0x1920 drivers/iommu/iommufd/device.c:966
 iommufd_device_attach+0x4a/0x170 drivers/iommu/iommufd/device.c:1007
 iommufd_test_mock_domain drivers/iommu/iommufd/selftest.c:1111 [inline]
 iommufd_test+0x5fd8/0xbc60 drivers/iommu/iommufd/selftest.c:2103
 iommufd_fops_ioctl+0x82a/0x9e0 drivers/iommu/iommufd/main.c:533
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0x23c/0x400 fs/ioctl.c:583
 __x64_sys_ioctl+0x97/0xe0 fs/ioctl.c:583
 x64_sys_call+0x18a7/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Local variable pfns created at:
 iopt_area_fill_domain+0x44/0xc80 drivers/iommu/iommufd/pages.c:1843
 iopt_fill_domain drivers/iommu/iommufd/io_pagetable.c:1063 [inline]
 iopt_table_add_domain+0xe15/0x1c00 drivers/iommu/iommufd/io_pagetable.c:1189

CPU: 0 UID: 0 PID: 17078 Comm: syz.5.4085 Not tainted syzkaller #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
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