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BUG: KCSAN: data-race in add_timer / timer_clear_idle

write to 0xffff88812c11dca4 of 1 bytes by task 0 on cpu 1:
 timer_clear_idle+0x3d/0x50 kernel/time/timer.c:1676
 tick_nohz_restart_sched_tick kernel/time/tick-sched.c:860 [inline]
 __tick_nohz_idle_restart_tick+0x32/0x1a0 kernel/time/tick-sched.c:1161
 tick_nohz_idle_exit+0x19c/0x1d0 kernel/time/tick-sched.c:1202
 do_idle+0xac/0x290 kernel/sched/idle.c:282
 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:361
 start_secondary+0x169/0x1b0 arch/x86/kernel/smpboot.c:268
 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:242

read to 0xffff88812c11dca4 of 1 bytes by task 13886 on cpu 0:
 forward_timer_base kernel/time/timer.c:892 [inline]
 __mod_timer kernel/time/timer.c:1010 [inline]
 add_timer+0x2e6/0x550 kernel/time/timer.c:1137
 __queue_delayed_work+0x13c/0x1d0 kernel/workqueue.c:1648
 queue_delayed_work_on+0xef/0x110 kernel/workqueue.c:1673
 queue_delayed_work include/linux/workqueue.h:522 [inline]
 bond_3ad_state_machine_handler+0xaca/0x28a0 drivers/net/bonding/bond_3ad.c:2353
 process_one_work+0x424/0x930 kernel/workqueue.c:2268
 worker_thread+0x9a/0x7e0 kernel/workqueue.c:2414
 kthread+0x203/0x230 kernel/kthread.c:268
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 13886 Comm: kworker/u4:5 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bond2 bond_3ad_state_machine_handler
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