==================================================================
BUG: KCSAN: data-race in hrtimer_wakeup / schedule_hrtimeout_range_clock

read to 0xffffc90001377848 of 8 bytes by task 7531 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 0xffffc90001377848 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]
 tick_nohz_idle_enter+0xe0/0x110 kernel/time/tick-sched.c:1006
 do_idle+0x3b/0x280 kernel/sched/idle.c:238
 cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:355
 rest_init+0xec/0xf6 init/main.c:452
 arch_call_rest_init+0x17/0x37
 start_kernel+0x838/0x85e init/main.c:786
 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:490
 x86_64_start_kernel+0x72/0x76 arch/x86/kernel/head64.c:471
 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================