================================================================== BUG: KCSAN: data-race in tick_sched_do_timer / tick_sched_do_timer write to 0xffffffff8764e210 of 4 bytes by interrupt on cpu 1: tick_sched_do_timer+0xb4/0xd0 kernel/time/tick-sched.c:141 tick_sched_timer+0x3f/0xd0 kernel/time/tick-sched.c:1313 __run_hrtimer kernel/time/hrtimer.c:1520 [inline] __hrtimer_run_queues+0x271/0x600 kernel/time/hrtimer.c:1584 hrtimer_interrupt+0x226/0x490 kernel/time/hrtimer.c:1646 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1113 [inline] smp_apic_timer_interrupt+0xd8/0x270 arch/x86/kernel/apic/apic.c:1138 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60 arch_safe_halt arch/x86/include/asm/paravirt.h:144 [inline] default_idle+0x21/0x170 arch/x86/kernel/process.c:697 cpuidle_idle_call kernel/sched/idle.c:154 [inline] do_idle+0x1b7/0x290 kernel/sched/idle.c:269 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:361 start_secondary+0x169/0x1b0 arch/x86/kernel/smpboot.c:268 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:242 read to 0xffffffff8764e210 of 4 bytes by interrupt on cpu 0: tick_sched_do_timer+0x2e/0xd0 kernel/time/tick-sched.c:137 tick_sched_timer+0x3f/0xd0 kernel/time/tick-sched.c:1313 __run_hrtimer kernel/time/hrtimer.c:1520 [inline] __hrtimer_run_queues+0x271/0x600 kernel/time/hrtimer.c:1584 hrtimer_interrupt+0x226/0x490 kernel/time/hrtimer.c:1646 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1113 [inline] smp_apic_timer_interrupt+0xd8/0x270 arch/x86/kernel/apic/apic.c:1138 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 arch_local_irq_enable arch/x86/include/asm/paravirt.h:769 [inline] tick_nohz_idle_exit+0x128/0x1d0 kernel/time/tick-sched.c:1204 do_idle+0xac/0x290 kernel/sched/idle.c:282 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:361 rest_init+0xe4/0xeb init/main.c:667 arch_call_rest_init+0x13/0x2b start_kernel+0x7fe/0x823 init/main.c:1005 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:242 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================