================================================================== BUG: KCSAN: data-race in tick_nohz_next_event / tick_sched_timer write to 0xffffffff86fc1a50 of 4 bytes by interrupt on cpu 0: tick_sched_do_timer kernel/time/tick-sched.c:141 [inline] tick_sched_timer+0x1f5/0x210 kernel/time/tick-sched.c:1321 __run_hrtimer+0x133/0x420 kernel/time/hrtimer.c:1519 __hrtimer_run_queues kernel/time/hrtimer.c:1583 [inline] hrtimer_interrupt+0x36e/0xa10 kernel/time/hrtimer.c:1645 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline] __sysvec_apic_timer_interrupt+0x6f/0x200 arch/x86/kernel/apic/apic.c:1097 run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:91 [inline] sysvec_apic_timer_interrupt+0x6f/0x90 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:631 read to 0xffffffff86fc1a50 of 4 bytes by task 0 on cpu 1: tick_nohz_next_event+0x217/0x300 kernel/time/tick-sched.c:754 tick_nohz_get_sleep_length+0x121/0x270 kernel/time/tick-sched.c:1107 menu_select+0x2fa/0xf40 drivers/cpuidle/governors/menu.c:283 cpuidle_select+0x3d/0x50 drivers/cpuidle/cpuidle.c:322 cpuidle_idle_call kernel/sched/idle.c:232 [inline] do_idle+0x15f/0x230 kernel/sched/idle.c:299 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:395 secondary_startup_64_no_verify+0xb0/0xbb Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.10.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================