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BUG: KCSAN: data-race in __run_hrtimer kernel/time/hrtimer.c:1416 [inline] and hrtimer_active+0x84/0x1a0
BUG: KCSAN: data-race in __hrtimer_run_queues+0x176/0x600 kernel/time/hrtimer.c:1451 and hrtimer_active+0x84/0x1a0

read to 0xffff88812bf1d818 of 8 bytes by task 7234 on cpu 0:
 hrtimer_active+0x84/0x1a0 kernel/time/hrtimer.c:1321
 hrtimer_try_to_cancel+0x3c/0x260 kernel/time/hrtimer.c:1135
 hrtimer_cancel kernel/time/hrtimer.c:1161 [inline]
 do_nanosleep+0x185/0x330 kernel/time/hrtimer.c:1681
 hrtimer_nanosleep+0x1c1/0x3e0 kernel/time/hrtimer.c:1733
 __do_sys_nanosleep kernel/time/hrtimer.c:1767 [inline]
 __se_sys_nanosleep kernel/time/hrtimer.c:1754 [inline]
 __x64_sys_nanosleep+0x106/0x150 kernel/time/hrtimer.c:1754
 do_syscall_64+0xcf/0x2f0 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

write to 0xffff88812bf1d818 of 8 bytes by interrupt on cpu 1:
 __run_hrtimer kernel/time/hrtimer.c:1416 [inline]
 __hrtimer_run_queues+0x176/0x600 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
 find_watchpoint kernel/kcsan/core.c:83 [inline]
 __kcsan_check_watchpoint+0x95/0x180 kernel/kcsan/core.c:322
 __tsan_read4+0x15/0x30 kernel/kcsan/kcsan.c:30
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:404 [inline]
 batadv_nc_worker+0x143/0x390 net/batman-adv/network-coding.c:718
 process_one_work+0x3d4/0x890 kernel/workqueue.c:2269
 worker_thread+0xa0/0x800 kernel/workqueue.c:2415
 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: 1 PID: 172 Comm: kworker/u4:3 Not tainted 5.3.0+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
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