================================================================== BUG: KCSAN: data-race in tick_nohz_handler / tick_nohz_handler write to 0xffffffff8652eb30 of 4 bytes by interrupt on cpu 1: tick_sched_do_timer kernel/time/tick-sched.c:224 [inline] tick_nohz_handler+0x2bc/0x2d0 kernel/time/tick-sched.c:287 __run_hrtimer kernel/time/hrtimer.c:1692 [inline] __hrtimer_run_queues+0x214/0x5e0 kernel/time/hrtimer.c:1756 hrtimer_interrupt+0x210/0x7b0 kernel/time/hrtimer.c:1818 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x5c/0x1a0 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x6e/0x80 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 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+0x21/0x30 drivers/acpi/processor_idle.c:112 acpi_idle_do_entry+0x1d/0x30 drivers/acpi/processor_idle.c:573 acpi_idle_enter+0x96/0xb0 drivers/acpi/processor_idle.c:707 cpuidle_enter_state+0xcf/0x270 drivers/cpuidle/cpuidle.c:267 cpuidle_enter+0x40/0x70 drivers/cpuidle/cpuidle.c:388 call_cpuidle kernel/sched/idle.c:155 [inline] cpuidle_idle_call kernel/sched/idle.c:236 [inline] do_idle+0x195/0x230 kernel/sched/idle.c:332 cpu_startup_entry+0x25/0x30 kernel/sched/idle.c:430 start_secondary+0x94/0xa0 arch/x86/kernel/smpboot.c:313 common_startup_64+0x12c/0x137 read to 0xffffffff8652eb30 of 4 bytes by interrupt on cpu 0: tick_sched_do_timer kernel/time/tick-sched.c:220 [inline] tick_nohz_handler+0x3d/0x2d0 kernel/time/tick-sched.c:287 __run_hrtimer kernel/time/hrtimer.c:1692 [inline] __hrtimer_run_queues+0x214/0x5e0 kernel/time/hrtimer.c:1756 hrtimer_interrupt+0x210/0x7b0 kernel/time/hrtimer.c:1818 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x5c/0x1a0 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x6e/0x80 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 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+0x21/0x30 drivers/acpi/processor_idle.c:112 acpi_idle_do_entry+0x1d/0x30 drivers/acpi/processor_idle.c:573 acpi_idle_enter+0x96/0xb0 drivers/acpi/processor_idle.c:707 cpuidle_enter_state+0xcf/0x270 drivers/cpuidle/cpuidle.c:267 cpuidle_enter+0x40/0x70 drivers/cpuidle/cpuidle.c:388 call_cpuidle kernel/sched/idle.c:155 [inline] cpuidle_idle_call kernel/sched/idle.c:236 [inline] do_idle+0x195/0x230 kernel/sched/idle.c:332 cpu_startup_entry+0x25/0x30 kernel/sched/idle.c:430 rest_init+0xef/0xf0 init/main.c:732 start_kernel+0x57c/0x5e0 init/main.c:1074 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507 x86_64_start_kernel+0x94/0xa0 arch/x86/kernel/head64.c:488 common_startup_64+0x12c/0x137 value changed: 0xffffffff -> 0x00000001 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.9.0-rc1-syzkaller-00005-g928a87efa423 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 ==================================================================