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BUG: KCSAN: data-race in kvm_set_memslot / make_mmio_spte

write to 0xffff88802d3b0000 of 8 bytes by task 25933 on cpu 1:
 install_new_memslots arch/x86/kvm/../../../virt/kvm/kvm_main.c:1149 [inline]
 kvm_set_memslot+0x945/0xa00 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1225
 __kvm_set_memory_region+0x794/0x930 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1377
 kvm_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1398 [inline]
 kvm_vm_ioctl_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1410 [inline]
 kvm_vm_ioctl+0xacb/0x1c30 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3825
 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+0x44/0xa9

read to 0xffff88802d3b0000 of 8 bytes by task 25936 on cpu 0:
 make_mmio_spte+0x5f/0xe0 arch/x86/kvm/mmu/spte.c:50
 mark_mmio_spte+0x25/0x140 arch/x86/kvm/mmu/mmu.c:218
 set_mmio_spte arch/x86/kvm/mmu/mmu.c:243 [inline]
 set_spte+0x1f4/0x200 arch/x86/kvm/mmu/mmu.c:2588
 mmu_set_spte+0x189/0xba0 arch/x86/kvm/mmu/mmu.c:2641
 __direct_map+0x69b/0x9b0 arch/x86/kvm/mmu/mmu.c:2915
 direct_page_fault+0x3c6/0x770 arch/x86/kvm/mmu/mmu.c:3731
 kvm_tdp_page_fault+0x92/0xa0 arch/x86/kvm/mmu/mmu.c:3798
 kvm_mmu_do_page_fault arch/x86/kvm/mmu.h:112 [inline]
 kvm_mmu_page_fault+0xca/0x3c0 arch/x86/kvm/mmu/mmu.c:5067
 handle_ept_misconfig+0x96/0x150 arch/x86/kvm/vmx/vmx.c:5355
 vmx_handle_exit+0x2fd/0x7e0 arch/x86/kvm/vmx/vmx.c:6048
 vcpu_enter_guest+0x19f6/0x24f0 arch/x86/kvm/x86.c:9066
 vcpu_run+0x24e/0x690 arch/x86/kvm/x86.c:9131
 kvm_arch_vcpu_ioctl_run+0x443/0x820 arch/x86/kvm/x86.c:9358
 kvm_vcpu_ioctl+0x562/0x8f0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3283
 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+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 25936 Comm: syz-executor.3 Not tainted 5.11.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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