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BUG: KCSAN: data-race in add_timer / run_timer_softirq

write to 0xffff88812bf1b6c8 of 8 bytes by interrupt on cpu 1:
 expire_timers kernel/time/timer.c:1445 [inline]
 __run_timers kernel/time/timer.c:1773 [inline]
 __run_timers kernel/time/timer.c:1740 [inline]
 run_timer_softirq+0xba3/0xd20 kernel/time/timer.c:1786
 __do_softirq+0x115/0x33f kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0xbb/0xe0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0xe6/0x280 arch/x86/kernel/apic/apic.c:1137
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830
 tomoyo_init_log+0x7d/0x10d0 security/tomoyo/audit.c:253
 tomoyo_supervisor+0x290/0xd20 security/tomoyo/common.c:2095
 tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline]
 tomoyo_path_number_perm+0x323/0x3c0 security/tomoyo/file.c:734
 tomoyo_path_mkdir+0x6e/0xa0 security/tomoyo/tomoyo.c:173
 security_path_mkdir+0xb8/0xf0 security/security.c:1029
 do_mkdirat+0xef/0x1f0 fs/namei.c:3828
 __do_sys_mkdir fs/namei.c:3846 [inline]
 __se_sys_mkdir fs/namei.c:3844 [inline]
 __x64_sys_mkdir+0x40/0x50 fs/namei.c:3844
 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffff88812bf1b6c8 of 8 bytes by interrupt on cpu 0:
 __mod_timer kernel/time/timer.c:1026 [inline]
 mod_timer kernel/time/timer.c:1100 [inline]
 add_timer+0x16f/0x550 kernel/time/timer.c:1136
 __queue_delayed_work+0x13b/0x1d0 kernel/workqueue.c:1649
 queue_delayed_work_on+0xf3/0x110 kernel/workqueue.c:1674
 queue_delayed_work include/linux/workqueue.h:509 [inline]
 srcu_funnel_gp_start kernel/rcu/srcutree.c:685 [inline]
 __call_srcu+0x666/0x780 kernel/rcu/srcutree.c:871
 call_srcu+0x2f/0x40 kernel/rcu/srcutree.c:897
 rcu_free_old_probes+0x2d/0x40 kernel/tracepoint.c:70
 __rcu_reclaim kernel/rcu/rcu.h:222 [inline]
 rcu_do_batch+0x256/0x5b0 kernel/rcu/tree.c:2157
 rcu_core+0x369/0x4d0 kernel/rcu/tree.c:2377
 rcu_core_si+0x12/0x20 kernel/rcu/tree.c:2386
 __do_softirq+0x115/0x33f kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0xbb/0xe0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0xe6/0x280 arch/x86/kernel/apic/apic.c:1137
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 8580 Comm: udevd Not tainted 5.4.0-rc3+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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