================================================================== BUG: KCSAN: data-race in hrtimer_wakeup / schedule_hrtimeout_range_clock read to 0xffffc900015cb848 of 8 bytes by task 7682 on cpu 1: schedule_hrtimeout_range_clock+0x109/0x1e0 kernel/time/hrtimer.c:2126 schedule_hrtimeout_range+0x34/0x50 kernel/time/hrtimer.c:2172 poll_schedule_timeout.constprop.0+0x75/0xc0 fs/select.c:243 do_select+0xd7f/0x1020 fs/select.c:603 core_sys_select+0x381/0x550 fs/select.c:677 do_pselect.constprop.0+0x11d/0x160 fs/select.c:759 __do_sys_pselect6 fs/select.c:784 [inline] __se_sys_pselect6 fs/select.c:769 [inline] __x64_sys_pselect6+0x12e/0x170 fs/select.c:769 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 write to 0xffffc900015cb848 of 8 bytes by interrupt on cpu 0: hrtimer_wakeup+0x32/0x60 kernel/time/hrtimer.c:1764 __run_hrtimer kernel/time/hrtimer.c:1514 [inline] __hrtimer_run_queues+0x274/0x5f0 kernel/time/hrtimer.c:1576 hrtimer_interrupt+0x22a/0x480 kernel/time/hrtimer.c:1638 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline] smp_apic_timer_interrupt+0xdc/0x280 arch/x86/kernel/apic/apic.c:1135 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 arch_local_irq_enable arch/x86/include/asm/paravirt.h:766 [inline] active_load_balance_cpu_stop+0x91/0x2b0 kernel/sched/fair.c:9179 cpu_stopper_thread+0x167/0x290 kernel/stop_machine.c:520 smpboot_thread_fn+0x37d/0x4a0 kernel/smpboot.c:165 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 11 Comm: migration/0 Not tainted 5.4.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================