================================================================== BUG: KCSAN: data-race in direct_page_fault / kvm_set_memslot write to 0xffff8880a3fdc800 of 8 bytes by task 12350 on cpu 1: install_new_memslots arch/x86/kvm/../../../virt/kvm/kvm_main.c:1147 [inline] kvm_set_memslot+0x866/0x910 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1223 __kvm_set_memory_region+0x708/0x910 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1369 kvm_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1390 [inline] kvm_vm_ioctl_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1402 [inline] kvm_vm_ioctl+0x81d/0x17c0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3703 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 0xffff8880a3fdc800 of 8 bytes by task 12340 on cpu 0: vcpu_cache_mmio_info arch/x86/kvm/x86.h:172 [inline] handle_abnormal_pfn arch/x86/kvm/mmu/mmu.c:3390 [inline] direct_page_fault+0x44c/0x740 arch/x86/kvm/mmu/mmu.c:4110 kvm_tdp_page_fault+0x92/0xa0 arch/x86/kvm/mmu/mmu.c:4187 kvm_mmu_do_page_fault arch/x86/kvm/mmu.h:112 [inline] kvm_mmu_page_fault+0xca/0x410 arch/x86/kvm/mmu/mmu.c:5450 handle_ept_misconfig+0x99/0x230 arch/x86/kvm/vmx/vmx.c:5355 vmx_handle_exit+0x56b/0xc20 arch/x86/kvm/vmx/vmx.c:6118 vcpu_enter_guest+0x1ada/0x2660 arch/x86/kvm/x86.c:8641 vcpu_run+0x26e/0x740 arch/x86/kvm/x86.c:8706 kvm_arch_vcpu_ioctl_run+0x38d/0x6a0 arch/x86/kvm/x86.c:8923 kvm_vcpu_ioctl+0x565/0x950 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3229 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: 12340 Comm: syz-executor.4 Not tainted 5.9.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================