================================================================== BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64 write to 0xffffffff8603f008 of 8 bytes by interrupt on cpu 0: tick_do_update_jiffies64+0x105/0x260 kernel/time/tick-sched.c:73 tick_sched_do_timer+0xd4/0xe0 kernel/time/tick-sched.c:138 tick_sched_timer+0x43/0xe0 kernel/time/tick-sched.c:1289 __run_hrtimer kernel/time/hrtimer.c:1389 [inline] __hrtimer_run_queues+0x288/0x600 kernel/time/hrtimer.c:1451 hrtimer_interrupt+0x22a/0x480 kernel/time/hrtimer.c:1509 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 __kcsan_check_watchpoint+0x0/0x180 kernel/kcsan/core.c:308 blk_cgroup_congested include/linux/blk-cgroup.h:312 [inline] mem_cgroup_throttle_swaprate+0x85/0x2c6 mm/swapfile.c:3739 mem_cgroup_try_charge_delay+0x63/0x80 mm/memcontrol.c:6222 do_anonymous_page mm/memory.c:2997 [inline] handle_pte_fault mm/memory.c:3838 [inline] __handle_mm_fault+0x17eb/0x2d00 mm/memory.c:3964 handle_mm_fault+0x21b/0x520 mm/memory.c:4001 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 read to 0xffffffff8603f008 of 8 bytes by task 0 on cpu 1: tick_do_update_jiffies64+0x2b/0x260 kernel/time/tick-sched.c:62 tick_nohz_update_jiffies kernel/time/tick-sched.c:505 [inline] tick_nohz_irq_enter kernel/time/tick-sched.c:1254 [inline] tick_irq_enter+0x139/0x1c0 kernel/time/tick-sched.c:1271 irq_enter+0x4f/0x60 kernel/softirq.c:354 entering_irq arch/x86/include/asm/apic.h:518 [inline] entering_ack_irq arch/x86/include/asm/apic.h:524 [inline] smp_apic_timer_interrupt+0x55/0x280 arch/x86/kernel/apic/apic.c:1133 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60 arch_cpu_idle+0x1f/0x30 arch/x86/kernel/process.c:571 default_idle_call+0x1e/0x40 kernel/sched/idle.c:94 cpuidle_idle_call kernel/sched/idle.c:154 [inline] do_idle+0x1ea/0x2c0 kernel/sched/idle.c:263 cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:354 start_secondary+0x207/0x260 arch/x86/kernel/smpboot.c:264 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.3.0+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================