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BUG: KCSAN: data-race in __cgroup_account_cputime / cgroup_rstat_flush_locked

read-write to 0xffffe8ffffd73018 of 8 bytes by task 7808 on cpu 1:
 __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
 put_prev_entity+0x1d/0x110 kernel/sched/fair.c:5141
 pick_next_task_fair+0x20f/0x280 kernel/sched/fair.c:8059
 __pick_next_task kernel/sched/core.c:5972 [inline]
 pick_next_task kernel/sched/core.c:6488 [inline]
 __schedule+0x290/0x8b0 kernel/sched/core.c:6633
 schedule+0x51/0x80 kernel/sched/core.c:6745
 exit_to_user_mode_loop+0x49/0xe0 kernel/entry/common.c:159
 exit_to_user_mode_prepare+0x6c/0xb0 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x26/0x140 kernel/entry/common.c:297
 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffffe8ffffd73018 of 8 bytes by task 8496 on cpu 0:
 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
 reclaim_high+0xca/0x110 mm/memcontrol.c:2432
 mem_cgroup_handle_over_high+0x8c/0x1a0 mm/memcontrol.c:2617
 try_charge_memcg+0xb35/0xd20 mm/memcontrol.c:2855
 obj_cgroup_charge_pages+0xab/0x130 mm/memcontrol.c:3138
 __memcg_kmem_charge_page+0x1d5/0x2c0 mm/memcontrol.c:3164
 __alloc_pages+0x1bb/0x340 mm/page_alloc.c:4785
 alloc_pages+0x3e1/0x4e0
 __pte_alloc_one include/asm-generic/pgalloc.h:63 [inline]
 pte_alloc_one+0x2d/0xc0 arch/x86/mm/pgtable.c:33
 __pte_alloc+0x33/0x1f0 mm/memory.c:439
 copy_pte_range mm/memory.c:1015 [inline]
 copy_pmd_range mm/memory.c:1150 [inline]
 copy_pud_range mm/memory.c:1187 [inline]
 copy_p4d_range mm/memory.c:1211 [inline]
 copy_page_range+0x1b2b/0x2020 mm/memory.c:1309
 dup_mmap kernel/fork.c:760 [inline]
 dup_mm kernel/fork.c:1692 [inline]
 copy_mm+0x95b/0xf80 kernel/fork.c:1741
 copy_process+0x1008/0x21b0 kernel/fork.c:2507
 kernel_clone+0x169/0x560 kernel/fork.c:2918
 __do_sys_clone kernel/fork.c:3061 [inline]
 __se_sys_clone kernel/fork.c:3045 [inline]
 __x64_sys_clone+0xe8/0x120 kernel/fork.c:3045
 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: 0x00000003c0170515 -> 0x00000003c01826ab

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 8496 Comm: syz-executor.3 Not tainted 6.4.0-rc2-syzkaller-00290-gd635f6cc934b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
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syz-executor.3 (8496) used greatest stack depth: 9736 bytes left