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BUG: KCSAN: data-race in __mod_memcg_lruvec_state / mem_cgroup_css_rstat_flush

write to 0xffffe8ffffd42dc0 of 4 bytes by task 3126 on cpu 0:
 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:3267 [inline]
 process_scheduled_works+0x465/0x990 kernel/workqueue.c:3348
 worker_thread+0x526/0x730 kernel/workqueue.c:3429
 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 0xffffe8ffffd42dc0 of 4 bytes by task 49 on cpu 1:
 memcg_rstat_updated mm/memcontrol.c:725 [inline]
 __mod_memcg_lruvec_state+0x13a/0x1a0 mm/memcontrol.c:875
 mod_memcg_lruvec_state include/linux/memcontrol.h:1082 [inline]
 mod_objcg_mlstate mm/memcontrol.c:3003 [inline]
 mod_objcg_state+0x43c/0x590 mm/memcontrol.c:3418
 __memcg_slab_free_hook+0xe3/0x130 mm/slub.c:2001
 memcg_slab_free_hook mm/slub.c:2020 [inline]
 slab_free mm/slub.c:4284 [inline]
 kfree+0x1b9/0x280 mm/slub.c:4396
 kvfree+0x39/0x40 mm/util.c:680
 netdev_freemem+0x2b/0x40 net/core/dev.c:10803
 netdev_release+0x58/0x70 net/core/net-sysfs.c:2031
 device_release+0x6c/0x150
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0xec/0x180 lib/kobject.c:737
 netdev_run_todo+0x6df/0x7d0 net/core/dev.c:10600
 rtnl_unlock+0xe/0x20 net/core/rtnetlink.c:152
 cleanup_net+0x41c/0x830 net/core/net_namespace.c:636
 process_one_work kernel/workqueue.c:3267 [inline]
 process_scheduled_works+0x465/0x990 kernel/workqueue.c:3348
 worker_thread+0x526/0x730 kernel/workqueue.c:3429
 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

value changed: 0x0000000f -> 0x00000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 49 Comm: kworker/u8:3 Tainted: G        W          6.9.0-rc7-syzkaller-00117-g448b3fe5a0ea #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: netns cleanup_net
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