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BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64

write to 0xffffffff8603f008 of 8 bytes by interrupt on cpu 1:
 tick_do_update_jiffies64+0x105/0x260 kernel/time/tick-sched.c:73
 tick_sched_do_timer+0xd4/0xe0 kernel/time/tick-sched.c:138
 tick_sched_timer+0x43/0xe0 kernel/time/tick-sched.c:1289
 __run_hrtimer kernel/time/hrtimer.c:1389 [inline]
 __hrtimer_run_queues+0x288/0x600 kernel/time/hrtimer.c:1451
 hrtimer_interrupt+0x22a/0x480 kernel/time/hrtimer.c:1509
 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
 should_watch kernel/kcsan/core.c:203 [inline]
 __kcsan_setup_watchpoint+0xc3/0x510 kernel/kcsan/core.c:363
 __tsan_write4 kernel/kcsan/kcsan.c:30 [inline]
 __tsan_write4+0x32/0x40 kernel/kcsan/kcsan.c:30
 skb_reset_tail_pointer include/linux/skbuff.h:2146 [inline]
 __build_skb_around+0xcb/0x1a0 net/core/skbuff.c:274
 __build_skb+0x63/0x80 net/core/skbuff.c:316
 __napi_alloc_skb+0x18a/0x210 net/core/skbuff.c:523
 napi_alloc_skb include/linux/skbuff.h:2813 [inline]
 page_to_skb+0x8d/0x480 drivers/net/virtio_net.c:384
 receive_mergeable drivers/net/virtio_net.c:924 [inline]
 receive_buf+0x17c7/0x30b0 drivers/net/virtio_net.c:1033

read to 0xffffffff8603f008 of 8 bytes by task 0 on cpu 0:
 tick_do_update_jiffies64+0x2b/0x260 kernel/time/tick-sched.c:62
 tick_nohz_restart_sched_tick kernel/time/tick-sched.c:830 [inline]
 __tick_nohz_idle_restart_tick+0x31/0x1b0 kernel/time/tick-sched.c:1137
 tick_nohz_idle_exit+0x1af/0x1e0 kernel/time/tick-sched.c:1178
 do_idle+0xb0/0x2c0 kernel/sched/idle.c:276
 cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:354
 rest_init+0xec/0xf6 init/main.c:452
 arch_call_rest_init+0x17/0x37
 start_kernel+0x83e/0x864 init/main.c:787
 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:472
 x86_64_start_kernel+0x72/0x76 arch/x86/kernel/head64.c:453
 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 5.3.0+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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