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BUG: KCSAN: data-race in direct_page_fault / kvm_mmu_notifier_invalidate_range_end

write to 0xffffc9000373a070 of 8 bytes by task 29239 on cpu 0:
 kvm_mmu_notifier_invalidate_range_end+0x39/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:530
 mn_hlist_invalidate_end mm/mmu_notifier.c:560 [inline]
 __mmu_notifier_invalidate_range_end+0x18e/0x210 mm/mmu_notifier.c:580
 mmu_notifier_invalidate_range_end include/linux/mmu_notifier.h:479 [inline]
 change_pmd_range mm/mprotect.c:277 [inline]
 change_pud_range mm/mprotect.c:297 [inline]
 change_p4d_range mm/mprotect.c:317 [inline]
 change_protection_range mm/mprotect.c:342 [inline]
 change_protection+0x10b3/0x12f0 mm/mprotect.c:365
 mprotect_fixup+0x377/0x580 mm/mprotect.c:487
 do_mprotect_pkey+0x543/0x6f0 mm/mprotect.c:626
 __do_sys_mprotect mm/mprotect.c:652 [inline]
 __se_sys_mprotect mm/mprotect.c:649 [inline]
 __x64_sys_mprotect+0x44/0x50 mm/mprotect.c:649
 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffffc9000373a070 of 8 bytes by task 29243 on cpu 1:
 direct_page_fault+0x27f/0xc00 arch/x86/kvm/mmu/mmu.c:3709
 kvm_tdp_page_fault+0x92/0xa0 arch/x86/kvm/mmu/mmu.c:3806
 kvm_mmu_do_page_fault arch/x86/kvm/mmu.h:119 [inline]
 kvm_mmu_page_fault+0xca/0x3c0 arch/x86/kvm/mmu/mmu.c:5021
 handle_ept_violation+0x280/0x360 arch/x86/kvm/vmx/vmx.c:5380
 __vmx_handle_exit+0x35b/0x850 arch/x86/kvm/vmx/vmx.c:6090
 vmx_handle_exit+0x1a/0xd0 arch/x86/kvm/vmx/vmx.c:6107
 vcpu_enter_guest+0x1a3e/0x2650 arch/x86/kvm/x86.c:9216
 vcpu_run+0x24f/0x6a0 arch/x86/kvm/x86.c:9282
 kvm_arch_vcpu_ioctl_run+0x476/0x860 arch/x86/kvm/x86.c:9510
 kvm_vcpu_ioctl+0x562/0x8f0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3316
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl+0xcb/0x140 fs/ioctl.c:739
 __x64_sys_ioctl+0x3f/0x50 fs/ioctl.c:739
 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 29243 Comm: syz-executor.4 Tainted: G        W         5.12.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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