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BUG: KCSAN: data-race in __cgroup_account_cputime / cgroup_rstat_flush_locked

read-write to 0xffffe8ffffc6ea08 of 8 bytes by task 30745 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 0xffffe8ffffc6ea08 of 8 bytes by task 30748 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]
 mem_cgroup_flush_stats+0x9f/0xd0 mm/memcontrol.c:672
 prepare_scan_count mm/vmscan.c:2915 [inline]
 shrink_node+0x2fa/0x1500 mm/vmscan.c:6500
 shrink_zones mm/vmscan.c:6737 [inline]
 do_try_to_free_pages+0x40d/0xc80 mm/vmscan.c:6799
 try_to_free_mem_cgroup_pages+0x1e2/0x480 mm/vmscan.c:7114
 try_charge_memcg+0x27d/0xd20 mm/memcontrol.c:2724
 try_charge mm/memcontrol.c:2866 [inline]
 mem_cgroup_charge_skmem+0x51/0x1c0 mm/memcontrol.c:7351
 sock_reserve_memory+0xb1/0x370 net/core/sock.c:1025
 sk_setsockopt+0x800/0x1de0 net/core/sock.c:1520
 sock_setsockopt+0x3c/0x50 net/core/sock.c:1546
 __sys_setsockopt+0x177/0x230 net/socket.c:2269
 __do_sys_setsockopt net/socket.c:2284 [inline]
 __se_sys_setsockopt net/socket.c:2281 [inline]
 __x64_sys_setsockopt+0x66/0x80 net/socket.c:2281
 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

value changed: 0x000000095138a756 -> 0x000000095138c983

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 30748 Comm: syz-executor.5 Not tainted 6.4.0-rc3-syzkaller-00015-g27e462c8fad4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
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