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BUG: KCSAN: data-race in mem_cgroup_flush_stats / mem_cgroup_flush_stats_delayed

write to 0xffffffff86f06e58 of 8 bytes by task 70 on cpu 0:
 __mem_cgroup_flush_stats mm/memcontrol.c:635 [inline]
 mem_cgroup_flush_stats+0x97/0x110 mm/memcontrol.c:644
 prepare_scan_count+0xad/0x7f0 mm/vmscan.c:2838
 shrink_node+0x1cc/0x930 mm/vmscan.c:6167
 kswapd_shrink_node mm/vmscan.c:6960 [inline]
 balance_pgdat+0x702/0xd10 mm/vmscan.c:7150
 kswapd+0x1f0/0x340 mm/vmscan.c:7410
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

read to 0xffffffff86f06e58 of 8 bytes by task 3092 on cpu 1:
 mem_cgroup_flush_stats_delayed+0x21/0x140 mm/memcontrol.c:649
 workingset_refault+0x2ba/0x750 mm/workingset.c:464
 filemap_add_folio+0xe2/0x150 mm/filemap.c:949
 page_cache_ra_unbounded+0x1a0/0x320 mm/readahead.c:251
 do_page_cache_ra mm/readahead.c:300 [inline]
 page_cache_ra_order+0xd1/0xe0 mm/readahead.c:560
 do_sync_mmap_readahead+0x322/0x380 mm/filemap.c:3062
 filemap_fault+0x18d/0x6a0 mm/filemap.c:3154
 __do_fault mm/memory.c:4163 [inline]
 do_read_fault mm/memory.c:4514 [inline]
 do_fault+0x4e8/0xaf0 mm/memory.c:4643
 handle_pte_fault mm/memory.c:4931 [inline]
 __handle_mm_fault mm/memory.c:5073 [inline]
 handle_mm_fault+0x8c5/0xb20 mm/memory.c:5219
 do_user_addr_fault+0x4a1/0x980 arch/x86/mm/fault.c:1428
 handle_page_fault arch/x86/mm/fault.c:1519 [inline]
 exc_page_fault+0x60/0x160 arch/x86/mm/fault.c:1575
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570

value changed: 0x000000010002b52b -> 0x000000010002b52c

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 3092 Comm: syz-fuzzer Tainted: G        W          6.2.0-rc4-syzkaller-00350-gedc00350d205-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
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