================================================================== BUG: KCSAN: data-race in tick_sched_do_timer / tick_sched_do_timer read to 0xffffffff85cb2790 of 4 bytes by interrupt on cpu 1: tick_sched_do_timer+0x33/0xe0 kernel/time/tick-sched.c:128 tick_sched_timer+0x43/0xe0 kernel/time/tick-sched.c:1292 __run_hrtimer kernel/time/hrtimer.c:1514 [inline] __hrtimer_run_queues+0x288/0x600 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 arch_local_irq_enable arch/x86/include/asm/paravirt.h:766 [inline] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] _raw_spin_unlock_irq+0x4e/0x80 kernel/locking/spinlock.c:199 finish_lock_switch kernel/sched/core.c:3123 [inline] finish_task_switch+0x7b/0x260 kernel/sched/core.c:3223 context_switch kernel/sched/core.c:3387 [inline] __schedule+0x319/0x640 kernel/sched/core.c:4069 schedule_idle+0x27/0x40 kernel/sched/core.c:4164 do_idle+0xc9/0x280 kernel/sched/idle.c:287 cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:355 start_secondary+0x208/0x260 arch/x86/kernel/smpboot.c:264 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241 write to 0xffffffff85cb2790 of 4 bytes by interrupt on cpu 0: tick_sched_do_timer+0xc0/0xe0 kernel/time/tick-sched.c:132 tick_sched_timer+0x43/0xe0 kernel/time/tick-sched.c:1292 __run_hrtimer kernel/time/hrtimer.c:1514 [inline] __hrtimer_run_queues+0x288/0x600 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 arch_local_irq_restore arch/x86/include/asm/paravirt.h:756 [inline] count_memcg_events include/linux/memcontrol.h:760 [inline] count_memcg_event_mm include/linux/memcontrol.h:781 [inline] handle_mm_fault+0x138/0x530 mm/memory.c:3990 do_user_addr_fault arch/x86/mm/fault.c:1441 [inline] __do_page_fault+0x3fb/0x9e0 arch/x86/mm/fault.c:1506 do_page_fault+0x54/0x233 arch/x86/mm/fault.c:1530 page_fault+0x34/0x40 arch/x86/entry/entry_64.S:1202 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 7179 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================