================================================================== BUG: KCSAN: data-race in tick_nohz_next_event / tick_sched_timer write to 0xffffffff85f06bb0 of 4 bytes by interrupt on cpu 1: tick_sched_do_timer kernel/time/tick-sched.c:193 [inline] tick_sched_timer+0x2ad/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 native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline] arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline] acpi_safe_halt+0x20/0x30 drivers/acpi/processor_idle.c:112 acpi_idle_do_entry+0x19/0x30 drivers/acpi/processor_idle.c:573 acpi_idle_enter+0x96/0xb0 drivers/acpi/processor_idle.c:711 cpuidle_enter_state+0xc6/0x260 drivers/cpuidle/cpuidle.c:267 cpuidle_enter+0x40/0x60 drivers/cpuidle/cpuidle.c:388 call_cpuidle kernel/sched/idle.c:134 [inline] cpuidle_idle_call kernel/sched/idle.c:215 [inline] do_idle+0x194/0x230 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 task 0 on cpu 0: tick_nohz_next_event+0x1d1/0x290 kernel/time/tick-sched.c:857 tick_nohz_get_sleep_length+0x138/0x230 kernel/time/tick-sched.c:1239 menu_select+0x308/0xf30 drivers/cpuidle/governors/menu.c:283 cpuidle_select+0x41/0x50 drivers/cpuidle/cpuidle.c:359 cpuidle_idle_call kernel/sched/idle.c:208 [inline] do_idle+0x160/0x230 kernel/sched/idle.c:282 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: 0xffffffff -> 0x00000001 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.3.0-syzkaller-13027-g1a5304fecee5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 ==================================================================