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BUG: KCSAN: data-race in __cgroup_account_cputime / cgroup_rstat_flush_locked

read-write to 0xffffe8ffffc7b828 of 8 bytes by task 8323 on cpu 0:
 __cgroup_account_cputime+0x44/0xa0 kernel/cgroup/rstat.c:415
 cgroup_account_cputime include/linux/cgroup.h:724 [inline]
 update_curr+0xf8/0x250 kernel/sched/fair.c:930
 dequeue_entity kernel/sched/fair.c:4939 [inline]
 dequeue_task_fair+0xdd/0x6d0 kernel/sched/fair.c:6396
 dequeue_task kernel/sched/core.c:2102 [inline]
 deactivate_task kernel/sched/core.c:2121 [inline]
 __schedule+0x21b/0x8b0 kernel/sched/core.c:6623
 schedule+0x51/0x80 kernel/sched/core.c:6745
 do_nanosleep+0xa2/0x2f0 kernel/time/hrtimer.c:2044
 hrtimer_nanosleep+0xe7/0x1e0 kernel/time/hrtimer.c:2097
 common_nsleep+0x68/0x80 kernel/time/posix-timers.c:1240
 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1281 [inline]
 __se_sys_clock_nanosleep+0x202/0x230 kernel/time/posix-timers.c:1258
 __x64_sys_clock_nanosleep+0x55/0x60 kernel/time/posix-timers.c:1258
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffffe8ffffc7b828 of 8 bytes by task 10426 on cpu 1:
 cgroup_base_stat_flush kernel/cgroup/rstat.c:373 [inline]
 cgroup_rstat_flush_locked+0x2e1/0x700 kernel/cgroup/rstat.c:199
 cgroup_rstat_flush+0x2b/0x40 kernel/cgroup/rstat.c:239
 do_flush_stats mm/memcontrol.c:658 [inline]
 flush_memcg_stats_dwork+0x7b/0xe0 mm/memcontrol.c:693
 process_one_work+0x3e6/0x750 kernel/workqueue.c:2405
 worker_thread+0x5f2/0xa10 kernel/workqueue.c:2552
 kthread+0x1d7/0x210 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

value changed: 0x00000004aa6feafb -> 0x00000004aa73008a

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 10426 Comm: kworker/u4:8 Not tainted 6.4.0-rc5-syzkaller-00178-g33f2b5785a2b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
Workqueue: events_unbound flush_memcg_stats_dwork
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