================================================================== BUG: KCSAN: data-race in kvm_mmu_notifier_invalidate_range_end / tdp_page_fault read to 0xffffc9000885e150 of 8 bytes by task 32710 on cpu 1: tdp_page_fault+0x204/0x570 arch/x86/kvm/mmu/mmu.c:4299 kvm_mmu_page_fault+0xf9/0xbc0 arch/x86/kvm/mmu/mmu.c:5539 handle_ept_violation+0x1e5/0x340 arch/x86/kvm/vmx/vmx.c:5163 vmx_handle_exit+0x1c2/0xdb0 arch/x86/kvm/vmx/vmx.c:5921 vcpu_enter_guest+0xc25/0x3860 arch/x86/kvm/x86.c:8290 vcpu_run arch/x86/kvm/x86.c:8354 [inline] kvm_arch_vcpu_ioctl_run+0x2a8/0xdf0 arch/x86/kvm/x86.c:8561 kvm_vcpu_ioctl+0x758/0xa30 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2847 vfs_ioctl fs/ioctl.c:47 [inline] file_ioctl fs/ioctl.c:545 [inline] do_vfs_ioctl+0x84f/0xcf0 fs/ioctl.c:732 ksys_ioctl+0xbd/0xe0 fs/ioctl.c:749 __do_sys_ioctl fs/ioctl.c:756 [inline] __se_sys_ioctl fs/ioctl.c:754 [inline] __x64_sys_ioctl+0x4c/0x60 fs/ioctl.c:754 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 write to 0xffffc9000885e150 of 8 bytes by task 32740 on cpu 0: kvm_mmu_notifier_invalidate_range_end+0x47/0xb0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:446 mn_hlist_invalidate_end mm/mmu_notifier.c:526 [inline] __mmu_notifier_invalidate_range_end+0x19c/0x250 mm/mmu_notifier.c:544 mmu_notifier_invalidate_range_end include/linux/mmu_notifier.h:466 [inline] zap_page_range_single+0x303/0x310 mm/memory.c:1384 unmap_mapping_range_vma mm/memory.c:2731 [inline] unmap_mapping_range_tree mm/memory.c:2752 [inline] unmap_mapping_pages+0x20c/0x250 mm/memory.c:2784 truncate_cleanup_page+0x1e3/0x240 mm/truncate.c:181 truncate_inode_page+0x3d/0x70 mm/truncate.c:227 shmem_undo_range+0x70b/0x13f0 mm/shmem.c:864 shmem_truncate_range+0x30/0x80 mm/shmem.c:992 shmem_fallocate+0x27b/0x860 mm/shmem.c:2759 vfs_fallocate+0x3be/0x650 fs/open.c:309 madvise_remove mm/madvise.c:850 [inline] madvise_vma mm/madvise.c:933 [inline] __do_sys_madvise+0x7f7/0x1150 mm/madvise.c:1121 __se_sys_madvise mm/madvise.c:1047 [inline] __x64_sys_madvise+0x4c/0x60 mm/madvise.c:1047 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 32740 Comm: syz-executor.0 Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================