=====================================================
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_xarray_clear drivers/iommu/iommufd/pages.c:590 [inline]
BUG: KMSAN: uninit-value in iopt_pages_unpin_xarray drivers/iommu/iommufd/pages.c:2030 [inline]
BUG: KMSAN: uninit-value in iopt_pages_unfill_xarray+0xfe3/0x1660 drivers/iommu/iommufd/pages.c:2068
 batch_add_pfn_num drivers/iommu/iommufd/pages.c:365 [inline]
 batch_add_pfn drivers/iommu/iommufd/pages.c:398 [inline]
 batch_from_xarray_clear drivers/iommu/iommufd/pages.c:590 [inline]
 iopt_pages_unpin_xarray drivers/iommu/iommufd/pages.c:2030 [inline]
 iopt_pages_unfill_xarray+0xfe3/0x1660 drivers/iommu/iommufd/pages.c:2068
 iopt_area_remove_access+0x508/0x650 drivers/iommu/iommufd/pages.c:2516
 iommufd_access_unpin_pages+0x637/0xa50 drivers/iommu/iommufd/device.c:1358
 iommufd_test_access_pages drivers/iommu/iommufd/selftest.c:1646 [inline]
 iommufd_test+0xb5fd/0xbc60 drivers/iommu/iommufd/selftest.c:2131
 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 batch created at:
 iopt_pages_unfill_xarray+0x86/0x1660 drivers/iommu/iommufd/pages.c:2053
 iopt_area_remove_access+0x508/0x650 drivers/iommu/iommufd/pages.c:2516

CPU: 0 UID: 0 PID: 7889 Comm: syz.2.499 Not tainted syzkaller #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
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