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BUG: KCSAN: data-race in add_timer / run_timer_softirq

write to 0xffff88812c01dbc8 of 8 bytes by interrupt on cpu 0:
 expire_timers kernel/time/timer.c:1446 [inline]
 __run_timers kernel/time/timer.c:1774 [inline]
 __run_timers kernel/time/timer.c:1741 [inline]
 run_timer_softirq+0x440/0xbd0 kernel/time/timer.c:1787
 __do_softirq+0x118/0x34a kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0xb5/0xd0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:546 [inline]
 smp_apic_timer_interrupt+0xe2/0x270 arch/x86/kernel/apic/apic.c:1146
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 arch_local_irq_restore arch/x86/include/asm/paravirt.h:752 [inline]
 console_unlock+0x8ec/0xb70 kernel/printk/printk.c:2481
 vprintk_emit+0x399/0x4e0 kernel/printk/printk.c:1996
 vprintk_default+0x2e/0x40 kernel/printk/printk.c:2023
 vprintk_func+0x81/0x13a kernel/printk/printk_safe.c:386
 printk+0x69/0x91 kernel/printk/printk.c:2056
 addrconf_notify.cold+0x2e/0x74 net/ipv6/addrconf.c:3573
 notifier_call_chain+0xda/0x160 kernel/notifier.c:83
 __raw_notifier_call_chain kernel/notifier.c:361 [inline]
 raw_notifier_call_chain+0x33/0x50 kernel/notifier.c:368
 call_netdevice_notifiers_info net/core/dev.c:1943 [inline]
 call_netdevice_notifiers_info+0x96/0x110 net/core/dev.c:1928
 netdev_state_change net/core/dev.c:1378 [inline]
 netdev_state_change+0xb2/0xd0 net/core/dev.c:1371
 do_setlink+0xdc0/0x1ec0 net/core/rtnetlink.c:2814
 rtnl_group_changelink net/core/rtnetlink.c:3103 [inline]
 __rtnl_newlink+0xa03/0xfb0 net/core/rtnetlink.c:3257
 rtnl_newlink+0x5f/0x90 net/core/rtnetlink.c:3377
 rtnetlink_rcv_msg+0x1d0/0x4e0 net/core/rtnetlink.c:5438
 netlink_rcv_skb+0xaf/0x260 net/netlink/af_netlink.c:2477
 rtnetlink_rcv+0x22/0x30 net/core/rtnetlink.c:5456
 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
 netlink_unicast+0x390/0x4c0 net/netlink/af_netlink.c:1328
 netlink_sendmsg+0x4cf/0x8a0 net/netlink/af_netlink.c:1917
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0x98/0xc0 net/socket.c:672
 ____sys_sendmsg+0x493/0x4c0 net/socket.c:2343
 ___sys_sendmsg+0xb5/0x100 net/socket.c:2397
 __sys_sendmsg+0x9b/0x150 net/socket.c:2430
 __do_sys_sendmsg net/socket.c:2439 [inline]
 __se_sys_sendmsg net/socket.c:2437 [inline]
 __x64_sys_sendmsg+0x4c/0x60 net/socket.c:2437
 do_syscall_64+0xc7/0x390 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffff88812c01dbc8 of 8 bytes by task 21 on cpu 1:
 __mod_timer kernel/time/timer.c:1027 [inline]
 add_timer+0x175/0x550 kernel/time/timer.c:1137
 __queue_delayed_work+0x13c/0x1d0 kernel/workqueue.c:1644
 queue_delayed_work_on+0xef/0x110 kernel/workqueue.c:1669
 queue_delayed_work include/linux/workqueue.h:509 [inline]
 bond_alb_monitor+0x2a9/0x900 drivers/net/bonding/bond_alb.c:1604
 process_one_work+0x424/0x930 kernel/workqueue.c:2264
 worker_thread+0x9a/0x7e0 kernel/workqueue.c:2410
 kthread+0x1cb/0x1f0 kernel/kthread.c:255
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 21 Comm: kworker/u4:1 Not tainted 5.6.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bond2 bond_alb_monitor
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