================================================================== BUG: KCSAN: data-race in tick_nohz_next_event / tick_sched_timer write to 0xffffffff860d8db0 of 4 bytes by interrupt on cpu 0: tick_sched_do_timer kernel/time/tick-sched.c:193 [inline] tick_sched_timer+0x2b0/0x2d0 kernel/time/tick-sched.c:1473 __run_hrtimer+0x132/0x420 kernel/time/hrtimer.c:1685 __hrtimer_run_queues kernel/time/hrtimer.c:1749 [inline] hrtimer_interrupt+0x36e/0xa70 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1096 [inline] __sysvec_apic_timer_interrupt+0xa3/0x250 arch/x86/kernel/apic/apic.c:1113 sysvec_apic_timer_interrupt+0x88/0xb0 arch/x86/kernel/apic/apic.c:1107 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 kcsan_setup_watchpoint+0x3e9/0x3f0 kernel/kcsan/core.c:694 handle_pte_fault mm/memory.c:4933 [inline] __handle_mm_fault mm/memory.c:5097 [inline] handle_mm_fault+0x497/0xa80 mm/memory.c:5218 do_user_addr_fault+0x4a1/0x980 arch/x86/mm/fault.c:1428 handle_page_fault arch/x86/mm/fault.c:1519 [inline] exc_page_fault+0x60/0x160 arch/x86/mm/fault.c:1575 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570 read to 0xffffffff860d8db0 of 4 bytes by task 0 on cpu 1: tick_nohz_next_event+0x1ee/0x2c0 kernel/time/tick-sched.c:852 tick_nohz_get_sleep_length+0x15b/0x250 kernel/time/tick-sched.c:1238 menu_select+0x347/0x1010 drivers/cpuidle/governors/menu.c:283 cpuidle_select+0x3d/0x50 drivers/cpuidle/cpuidle.c:327 cpuidle_idle_call kernel/sched/idle.c:229 [inline] do_idle+0x173/0x250 kernel/sched/idle.c:303 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:400 start_secondary+0x78/0x80 arch/x86/kernel/smpboot.c:262 secondary_startup_64_no_verify+0xcf/0xdb value changed: 0xffffffff -> 0x00000000 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.1.0-rc3-syzkaller-00152-gf2f32f8af2b0-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 ==================================================================