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BUG: KCSAN: data-race in process_srcu / synchronize_srcu

write to 0xffffffff8625b2e0 of 8 bytes by task 43 on cpu 1:
 srcu_gp_end kernel/rcu/srcutree.c:533 [inline]
 srcu_advance_state kernel/rcu/srcutree.c:1146 [inline]
 process_srcu+0x207/0x780 kernel/rcu/srcutree.c:1237
 process_one_work+0x3d4/0x890 kernel/workqueue.c:2264
 worker_thread+0xa0/0x800 kernel/workqueue.c:2410
 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352

read to 0xffffffff8625b2e0 of 8 bytes by task 8090 on cpu 0:
 srcu_might_be_idle kernel/rcu/srcutree.c:784 [inline]
 synchronize_srcu+0x107/0x214 kernel/rcu/srcutree.c:996
 fsnotify_connector_destroy_workfn+0x63/0xb0 fs/notify/mark.c:164
 process_one_work+0x3d4/0x890 kernel/workqueue.c:2264
 worker_thread+0xa0/0x800 kernel/workqueue.c:2410
 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: 0 PID: 8090 Comm: kworker/u4:6 Not tainted 5.5.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound fsnotify_connector_destroy_workfn
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