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BUG: KCSAN: data-race in kvm_mmu_notifier_invalidate_range_end / tdp_page_fault

read to 0xffffc900018a2130 of 8 bytes by task 8257 on cpu 0:
 tdp_page_fault+0x1d8/0x4d0 arch/x86/kvm/mmu.c:4200
 kvm_mmu_page_fault+0xf9/0xbc0 arch/x86/kvm/mmu.c:5439
 handle_ept_violation+0x1e5/0x340 arch/x86/kvm/vmx/vmx.c:5193
 vmx_handle_exit+0x1c2/0xd60 arch/x86/kvm/vmx/vmx.c:5949
 vcpu_enter_guest+0xc1f/0x3820 arch/x86/kvm/x86.c:8226
 vcpu_run arch/x86/kvm/x86.c:8290 [inline]
 kvm_arch_vcpu_ioctl_run+0x2a2/0xdc0 arch/x86/kvm/x86.c:8497
 kvm_vcpu_ioctl+0x752/0xa30 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2765
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:509 [inline]
 do_vfs_ioctl+0x991/0xc60 fs/ioctl.c:696
 ksys_ioctl+0xbd/0xe0 fs/ioctl.c:713
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl fs/ioctl.c:718 [inline]
 __x64_sys_ioctl+0x4c/0x60 fs/ioctl.c:718
 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

write to 0xffffc900018a2130 of 8 bytes by task 8304 on cpu 1:
 kvm_mmu_notifier_invalidate_range_end+0x47/0xb0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:412
 __mmu_notifier_invalidate_range_end+0x144/0x1e0 mm/mmu_notifier.c:222
 mmu_notifier_invalidate_range_end include/linux/mmu_notifier.h:377 [inline]
 zap_page_range_single+0x303/0x310 mm/memory.c:1366
 unmap_mapping_range_vma mm/memory.c:2635 [inline]
 unmap_mapping_range_tree mm/memory.c:2656 [inline]
 unmap_mapping_pages+0x20c/0x250 mm/memory.c:2688
 unmap_mapping_range+0x51/0x60 mm/memory.c:2723
 shmem_fallocate+0x6ed/0x860 mm/shmem.c:2752
 vfs_fallocate+0x3be/0x650 fs/open.c:309
 madvise_remove mm/madvise.c:842 [inline]
 madvise_vma mm/madvise.c:925 [inline]
 __do_sys_madvise+0x7f7/0x1150 mm/madvise.c:1113
 __se_sys_madvise mm/madvise.c:1039 [inline]
 __x64_sys_madvise+0x4c/0x60 mm/madvise.c:1039
 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 8304 Comm: syz-executor.1 Not tainted 5.4.0-rc3+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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