==================================================================
BUG: KCSAN: data-race in install_new_memslots / mmio_info_in_cache

write to 0xffff888122060000 of 8 bytes by task 22168 on cpu 1:
 install_new_memslots+0xef/0x130 arch/x86/kvm/../../../virt/kvm/kvm_main.c:910
 __kvm_set_memory_region+0xeea/0x1380 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1069
 kvm_set_memory_region+0x36/0x60 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1092
 kvm_vm_ioctl_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1104 [inline]
 kvm_vm_ioctl+0x6d0/0x1190 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3231
 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

read to 0xffff888122060000 of 8 bytes by task 22162 on cpu 0:
 vcpu_match_mmio_gen arch/x86/kvm/x86.h:206 [inline]
 vcpu_match_mmio_gpa arch/x86/kvm/x86.h:234 [inline]
 mmio_info_in_cache+0x13f/0x1e0 arch/x86/kvm/mmu.c:3934
 handle_mmio_page_fault arch/x86/kvm/mmu.c:3990 [inline]
 kvm_mmu_page_fault+0x27b/0xbc0 arch/x86/kvm/mmu.c:5433
 handle_ept_misconfig+0xbf/0x1f0 arch/x86/kvm/vmx/vmx.c:5203
 vmx_handle_exit+0x1c2/0xd60 arch/x86/kvm/vmx/vmx.c:5929
 vcpu_enter_guest+0xc1f/0x3830 arch/x86/kvm/x86.c:8227
 vcpu_run arch/x86/kvm/x86.c:8291 [inline]
 kvm_arch_vcpu_ioctl_run+0x2a2/0xdc0 arch/x86/kvm/x86.c:8498
 kvm_vcpu_ioctl+0x752/0xa30 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2772
 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

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 22162 Comm: syz-executor.0 Not tainted 5.4.0-rc6+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================