================================================================== BUG: KCSAN: data-race in kvm_arch_vcpu_load / kvm_vcpu_kick write to 0xffff88802f340ca0 of 4 bytes by task 30107 on cpu 1: kvm_arch_vcpu_load+0x423/0x590 arch/x86/kvm/x86.c:3999 kvm_sched_in+0x57/0x60 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4831 __fire_sched_in_preempt_notifiers kernel/sched/core.c:3911 [inline] fire_sched_in_preempt_notifiers kernel/sched/core.c:3917 [inline] finish_task_switch+0x278/0x2a0 kernel/sched/core.c:4208 context_switch kernel/sched/core.c:4330 [inline] __schedule+0x3c1/0x580 kernel/sched/core.c:5078 schedule+0x7f/0xb0 kernel/sched/core.c:5157 xfer_to_guest_mode_work kernel/entry/kvm.c:20 [inline] xfer_to_guest_mode_handle_work+0x87/0x170 kernel/entry/kvm.c:50 vcpu_run+0x547/0x690 arch/x86/kvm/x86.c:9169 kvm_arch_vcpu_ioctl_run+0x466/0x850 arch/x86/kvm/x86.c:9374 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 read to 0xffff88802f340ca0 of 4 bytes by task 7 on cpu 0: kvm_vcpu_kick+0x15/0x160 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2876 kvm_arch_async_page_present_queued+0x43/0x50 arch/x86/kvm/x86.c:11120 async_pf_execute+0x1d3/0x300 arch/x86/kvm/../../../virt/kvm/async_pf.c:79 process_one_work+0x3e1/0x950 kernel/workqueue.c:2275 worker_thread+0x616/0xa70 kernel/workqueue.c:2421 kthread+0x20b/0x230 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 7 Comm: kworker/0:1 Not tainted 5.11.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events async_pf_execute ==================================================================