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BUG: KCSAN: data-race in wq_worker_tick / wq_worker_tick

read-write to 0xffff8881000670a8 of 8 bytes by interrupt on cpu 1:
 wq_worker_tick+0x66/0x3c0 kernel/workqueue.c:1333
 scheduler_tick+0x13e/0x1d0 kernel/sched/core.c:5672
 update_process_times+0xf5/0x110 kernel/time/timer.c:2076
 tick_sched_handle kernel/time/tick-sched.c:254 [inline]
 tick_sched_timer+0x244/0x2c0 kernel/time/tick-sched.c:1492
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x217/0x700 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x20d/0x7b0 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1063 [inline]
 __sysvec_apic_timer_interrupt+0x52/0x190 arch/x86/kernel/apic/apic.c:1080
 sysvec_apic_timer_interrupt+0x68/0x80 arch/x86/kernel/apic/apic.c:1074
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
 preempt_count arch/x86/include/asm/preempt.h:27 [inline]
 get_ctx kernel/kcsan/core.c:206 [inline]
 check_access kernel/kcsan/core.c:750 [inline]
 __tsan_unaligned_write8+0xb9/0x180 kernel/kcsan/core.c:1025
 hlist_move_list include/linux/list.h:1108 [inline]
 sock_hash_free+0x182/0x3b0 net/core/sock_map.c:1153
 bpf_map_free_deferred+0x9b/0x120 kernel/bpf/syscall.c:699
 process_one_work kernel/workqueue.c:2630 [inline]
 process_scheduled_works+0x5b8/0xa30 kernel/workqueue.c:2703
 worker_thread+0x525/0x730 kernel/workqueue.c:2784
 kthread+0x1d7/0x210 kernel/kthread.c:388
 ret_from_fork+0x48/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304

read-write to 0xffff8881000670a8 of 8 bytes by interrupt on cpu 0:
 wq_worker_tick+0x66/0x3c0 kernel/workqueue.c:1333
 scheduler_tick+0x13e/0x1d0 kernel/sched/core.c:5672
 update_process_times+0xf5/0x110 kernel/time/timer.c:2076
 tick_sched_handle kernel/time/tick-sched.c:254 [inline]
 tick_sched_timer+0x244/0x2c0 kernel/time/tick-sched.c:1492
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x217/0x700 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x20d/0x7b0 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1063 [inline]
 __sysvec_apic_timer_interrupt+0x52/0x190 arch/x86/kernel/apic/apic.c:1080
 sysvec_apic_timer_interrupt+0x68/0x80 arch/x86/kernel/apic/apic.c:1074
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
 __preempt_count_sub arch/x86/include/asm/preempt.h:85 [inline]
 __local_bh_enable_ip+0x49/0x70 kernel/softirq.c:384
 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline]
 _raw_spin_unlock_bh+0x36/0x40 kernel/locking/spinlock.c:210
 sock_hash_free+0x1be/0x3b0 net/core/sock_map.c:1154
 bpf_map_free_deferred+0x9b/0x120 kernel/bpf/syscall.c:699
 process_one_work kernel/workqueue.c:2630 [inline]
 process_scheduled_works+0x5b8/0xa30 kernel/workqueue.c:2703
 worker_thread+0x525/0x730 kernel/workqueue.c:2784
 kthread+0x1d7/0x210 kernel/kthread.c:388
 ret_from_fork+0x48/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304

value changed: 0x00000000007a8730 -> 0x00000000007aae40

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 27673 Comm: kworker/u4:42 Not tainted 6.5.0-syzkaller-12145-g4a0fc73da97e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: events_unbound bpf_map_free_deferred
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