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BUG: KCSAN: data-race in direct_page_fault / kvm_mmu_notifier_invalidate_range_end

write to 0xffffc90001338158 of 8 bytes by task 766 on cpu 0:
 kvm_mmu_notifier_invalidate_range_end+0x43/0xb0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:443
 mn_hlist_invalidate_end mm/mmu_notifier.c:553 [inline]
 __mmu_notifier_invalidate_range_end+0x19e/0x250 mm/mmu_notifier.c:573
 mmu_notifier_invalidate_range_end include/linux/mmu_notifier.h:472 [inline]
 try_to_unmap_one+0x1349/0x1740 mm/rmap.c:1694
 rmap_walk_file+0x240/0x590 mm/rmap.c:1920
 rmap_walk+0x10e/0x180 mm/rmap.c:1938
 try_to_unmap+0x14c/0x2e0 mm/rmap.c:1757
 shrink_page_list+0xede/0x2970 mm/vmscan.c:1302
 reclaim_pages+0x542/0x710 mm/vmscan.c:2139
 madvise_cold_or_pageout_pte_range+0xd25/0x1800 mm/madvise.c:377
 walk_pmd_range mm/pagewalk.c:89 [inline]
 walk_pud_range mm/pagewalk.c:160 [inline]
 walk_p4d_range mm/pagewalk.c:193 [inline]
 walk_pgd_range mm/pagewalk.c:229 [inline]
 __walk_page_range+0xa6e/0x1550 mm/pagewalk.c:331
 walk_page_range+0x14c/0x280 mm/pagewalk.c:427
 madvise_pageout_page_range mm/madvise.c:514 [inline]
 madvise_pageout+0x15e/0x200 mm/madvise.c:550
 madvise_vma mm/madvise.c:939 [inline]
 do_madvise mm/madvise.c:1121 [inline]
 do_madvise+0x865/0x1230 mm/madvise.c:1047
 __do_sys_madvise mm/madvise.c:1147 [inline]
 __se_sys_madvise mm/madvise.c:1145 [inline]
 __x64_sys_madvise+0x48/0x60 mm/madvise.c:1145
 do_syscall_64+0xc7/0x390 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffffc90001338158 of 8 bytes by task 351 on cpu 1:
 direct_page_fault+0x1ac/0x15e0 arch/x86/kvm/mmu/mmu.c:4150
 tdp_page_fault+0xa9/0xd0 arch/x86/kvm/mmu/mmu.c:4237
 kvm_mmu_page_fault+0xe7/0xb10 arch/x86/kvm/mmu/mmu.c:5439
 handle_ept_violation+0x1e0/0x340 arch/x86/kvm/vmx/vmx.c:5139
 vmx_handle_exit+0x1de/0xd70 arch/x86/kvm/vmx/vmx.c:5909
 vcpu_enter_guest+0xc9e/0x3a20 arch/x86/kvm/x86.c:8434
 vcpu_run arch/x86/kvm/x86.c:8498 [inline]
 kvm_arch_vcpu_ioctl_run+0x298/0xdc0 arch/x86/kvm/x86.c:8720
 kvm_vcpu_ioctl+0x70b/0x9d0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2932
 vfs_ioctl fs/ioctl.c:47 [inline]
 ksys_ioctl+0x101/0x150 fs/ioctl.c:763
 __do_sys_ioctl fs/ioctl.c:772 [inline]
 __se_sys_ioctl fs/ioctl.c:770 [inline]
 __x64_sys_ioctl+0x47/0x60 fs/ioctl.c:770
 do_syscall_64+0xc7/0x390 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 351 Comm: syz-executor.3 Not tainted 5.6.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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