================================================================== BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_sched_timer write to 0xffffffff85f06bb0 of 4 bytes by task 0 on cpu 1: tick_nohz_stop_tick kernel/time/tick-sched.c:892 [inline] tick_nohz_idle_stop_tick+0x1d9/0x6c0 kernel/time/tick-sched.c:1119 cpuidle_idle_call kernel/sched/idle.c:211 [inline] do_idle+0x177/0x230 kernel/sched/idle.c:282 cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:379 start_secondary+0x7c/0x80 arch/x86/kernel/smpboot.c:269 secondary_startup_64_no_verify+0xf5/0xfb read to 0xffffffff85f06bb0 of 4 bytes by interrupt on cpu 0: tick_sched_do_timer kernel/time/tick-sched.c:189 [inline] tick_sched_timer+0x3d/0x2c0 kernel/time/tick-sched.c:1474 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x217/0x700 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x20d/0x7b0 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x73/0x210 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x68/0x80 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 finish_task_switch+0xb6/0x280 kernel/sched/core.c:5215 context_switch kernel/sched/core.c:5346 [inline] __schedule+0x633/0x8b0 kernel/sched/core.c:6669 schedule_idle+0x1a/0x30 kernel/sched/core.c:6773 do_idle+0x1fa/0x230 kernel/sched/idle.c:310 cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:379 rest_init+0xf3/0x100 init/main.c:735 arch_call_rest_init+0x9/0x10 init/main.c:834 start_kernel+0x582/0x5e0 init/main.c:1088 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:556 x86_64_start_kernel+0x94/0xa0 arch/x86/kernel/head64.c:537 secondary_startup_64_no_verify+0xf5/0xfb value changed: 0x00000001 -> 0xffffffff Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.4.0-rc2-syzkaller-00018-g4d6d4c7f541d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 ==================================================================