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BUG: KCSAN: data-race in __mod_memcg_lruvec_state / mem_cgroup_css_rstat_flush

write to 0xffff888237c344c0 of 4 bytes by task 6159 on cpu 1:
 mem_cgroup_css_rstat_flush+0x4ea/0x540 mm/memcontrol.c:5848
 cgroup_rstat_flush_locked+0x848/0x980 kernel/cgroup/rstat.c:245
 cgroup_rstat_flush+0x26/0x40 kernel/cgroup/rstat.c:277
 do_flush_stats mm/memcontrol.c:745 [inline]
 flush_memcg_stats_dwork+0x50/0x90 mm/memcontrol.c:782
 process_one_work kernel/workqueue.c:3254 [inline]
 process_scheduled_works+0x465/0x990 kernel/workqueue.c:3335
 worker_thread+0x526/0x730 kernel/workqueue.c:3416
 kthread+0x1d1/0x210 kernel/kthread.c:388
 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

read-write to 0xffff888237c344c0 of 4 bytes by task 6776 on cpu 0:
 memcg_rstat_updated mm/memcontrol.c:725 [inline]
 __mod_memcg_lruvec_state+0x13a/0x1a0 mm/memcontrol.c:875
 __mod_lruvec_state+0x3c/0x50 mm/memcontrol.c:897
 __update_lru_size include/linux/mm_inline.h:47 [inline]
 update_lru_size include/linux/mm_inline.h:56 [inline]
 lruvec_add_folio include/linux/mm_inline.h:326 [inline]
 __mlock_folio mm/mlock.c:96 [inline]
 mlock_folio_batch+0xaf6/0x1940 mm/mlock.c:200
 mlock_folio+0x1b7/0x210 mm/mlock.c:259
 mlock_vma_folio mm/internal.h:765 [inline]
 __folio_add_file_rmap mm/rmap.c:1461 [inline]
 folio_add_file_rmap_ptes+0x175/0x180 mm/rmap.c:1478
 set_pte_range+0x2ae/0x670 mm/memory.c:4682
 filemap_map_order0_folio mm/filemap.c:3557 [inline]
 filemap_map_pages+0x581/0x900 mm/filemap.c:3603
 do_fault_around mm/memory.c:4852 [inline]
 do_read_fault mm/memory.c:4885 [inline]
 do_fault mm/memory.c:5024 [inline]
 do_pte_missing mm/memory.c:3880 [inline]
 handle_pte_fault mm/memory.c:5300 [inline]
 __handle_mm_fault mm/memory.c:5441 [inline]
 handle_mm_fault+0x1060/0x27e0 mm/memory.c:5606
 faultin_page mm/gup.c:958 [inline]
 __get_user_pages+0x470/0xec0 mm/gup.c:1257
 populate_vma_page_range mm/gup.c:1697 [inline]
 __mm_populate+0x204/0x340 mm/gup.c:1800
 mm_populate include/linux/mm.h:3411 [inline]
 __do_sys_mlockall mm/mlock.c:777 [inline]
 __se_sys_mlockall+0x28e/0x320 mm/mlock.c:753
 __x64_sys_mlockall+0x1f/0x30 mm/mlock.c:753
 x64_sys_call+0x2a41/0x2d30 arch/x86/include/generated/asm/syscalls_64.h:152
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x00000018 -> 0x00000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 6776 Comm: syz-executor.0 Tainted: G        W          6.9.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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