================================================================== BUG: KCSAN: data-race in futex_wait / hrtimer_wakeup write to 0xffffc9000167bea8 of 8 bytes by interrupt on cpu 1: hrtimer_wakeup+0x25/0x50 kernel/time/hrtimer.c:1937 __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:1086 [inline] __sysvec_apic_timer_interrupt+0xa3/0x250 arch/x86/kernel/apic/apic.c:1103 sysvec_apic_timer_interrupt+0x88/0xb0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline] arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline] acpi_safe_halt drivers/acpi/processor_idle.c:110 [inline] acpi_idle_do_entry drivers/acpi/processor_idle.c:551 [inline] acpi_idle_enter+0x27b/0x300 drivers/acpi/processor_idle.c:686 cpuidle_enter_state+0x2ee/0x7a0 drivers/cpuidle/cpuidle.c:237 cpuidle_enter+0x3c/0x60 drivers/cpuidle/cpuidle.c:351 call_cpuidle kernel/sched/idle.c:155 [inline] cpuidle_idle_call kernel/sched/idle.c:236 [inline] do_idle+0x1b2/0x250 kernel/sched/idle.c:303 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:400 start_secondary+0x78/0x80 arch/x86/kernel/smpboot.c:266 secondary_startup_64_no_verify+0xc4/0xcb read to 0xffffc9000167bea8 of 8 bytes by task 19618 on cpu 0: futex_wait+0x14e/0x350 kernel/futex/waitwake.c:663 futex_wait_restart+0xc6/0xf0 kernel/futex/waitwake.c:705 __do_sys_restart_syscall+0x2d/0x40 kernel/signal.c:3007 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0xffff8881154ee900 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 19618 Comm: syz-executor.2 Not tainted 5.18.0-rc7-syzkaller-00121-g3d7285a335ed-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================