================================================================== BUG: KCSAN: data-race in kvm_arch_vcpu_load / pvclock_gtod_notify write to 0xffffffff85fde628 of 4 bytes by interrupt on cpu 0: update_pvclock_gtod arch/x86/kvm/x86.c:1551 [inline] pvclock_gtod_notify+0x9f/0x260 arch/x86/kvm/x86.c:7123 notifier_call_chain+0xd7/0x160 kernel/notifier.c:95 __raw_notifier_call_chain kernel/notifier.c:396 [inline] raw_notifier_call_chain+0x37/0x50 kernel/notifier.c:403 update_pvclock_gtod kernel/time/timekeeping.c:578 [inline] timekeeping_update+0x1b5/0x2d0 kernel/time/timekeeping.c:672 timekeeping_advance+0x87d/0xd80 kernel/time/timekeeping.c:2120 update_wall_time+0x19/0x20 kernel/time/timekeeping.c:2137 tick_do_update_jiffies64+0x1a4/0x250 kernel/time/tick-sched.c:94 tick_sched_do_timer+0xd4/0xe0 kernel/time/tick-sched.c:138 tick_sched_timer+0x43/0xe0 kernel/time/tick-sched.c:1292 __run_hrtimer kernel/time/hrtimer.c:1514 [inline] __hrtimer_run_queues+0x274/0x5f0 kernel/time/hrtimer.c:1576 hrtimer_interrupt+0x22a/0x480 kernel/time/hrtimer.c:1638 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline] smp_apic_timer_interrupt+0xdc/0x280 arch/x86/kernel/apic/apic.c:1135 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 __read_once_size include/linux/compiler.h:227 [inline] check_kcov_mode kernel/kcov.c:70 [inline] write_comp_data+0x1e/0x70 kernel/kcov.c:123 tomoyo_check_path_acl+0x4e/0xa0 security/tomoyo/file.c:258 tomoyo_check_acl+0xf6/0x270 security/tomoyo/domain.c:172 tomoyo_path_permission security/tomoyo/file.c:586 [inline] tomoyo_path_permission+0xe3/0x160 security/tomoyo/file.c:573 tomoyo_path_perm+0x23e/0x390 security/tomoyo/file.c:838 tomoyo_inode_getattr+0x26/0x40 security/tomoyo/tomoyo.c:129 security_inode_getattr+0x9b/0xd0 security/security.c:1222 vfs_getattr+0x2e/0x70 fs/stat.c:115 vfs_statx+0x102/0x190 fs/stat.c:191 vfs_stat include/linux/fs.h:3242 [inline] __do_sys_newstat+0x51/0xb0 fs/stat.c:341 __se_sys_newstat fs/stat.c:337 [inline] __x64_sys_newstat+0x3a/0x50 fs/stat.c:337 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffffffff85fde628 of 4 bytes by task 8687 on cpu 1: kvm_check_tsc_unstable arch/x86/kvm/x86.c:1837 [inline] kvm_arch_vcpu_load+0x1e5/0x620 arch/x86/kvm/x86.c:3418 vcpu_load+0x4c/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:167 kvm_arch_vcpu_ioctl_set_regs+0x24/0x50 arch/x86/kvm/x86.c:8589 kvm_vcpu_ioctl+0x3aa/0xa30 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2803 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: 1 PID: 8687 Comm: syz-executor.5 Not tainted 5.4.0-rc6+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================