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BUG: KCSAN: data-race in __mod_memcg_state / mem_cgroup_css_rstat_flush

write to 0xffffe8ffffd4d480 of 4 bytes by task 10545 on cpu 0:
 mem_cgroup_css_rstat_flush+0x4ea/0x540 mm/memcontrol.c:5845
 cgroup_rstat_flush_locked+0x86b/0x9a0 kernel/cgroup/rstat.c:245
 cgroup_rstat_flush+0x26/0x40 kernel/cgroup/rstat.c:277
 do_flush_stats mm/memcontrol.c:744 [inline]
 mem_cgroup_flush_stats+0xb2/0xc0 mm/memcontrol.c:765
 prepare_scan_control mm/vmscan.c:2226 [inline]
 shrink_node+0x314/0x15d0 mm/vmscan.c:5900
 shrink_zones mm/vmscan.c:6141 [inline]
 do_try_to_free_pages+0x43d/0xce0 mm/vmscan.c:6203
 try_to_free_mem_cgroup_pages+0x1e2/0x480 mm/vmscan.c:6518
 try_charge_memcg+0x280/0xd20 mm/memcontrol.c:2782
 obj_cgroup_charge_pages+0xbd/0x1c0 mm/memcontrol.c:3301
 __memcg_kmem_charge_page+0x9c/0x170 mm/memcontrol.c:3327
 __alloc_pages+0x1bb/0x340 mm/page_alloc.c:4584
 alloc_pages_mpol+0xb1/0x1d0 mm/mempolicy.c:2133
 alloc_pages+0xe0/0x100 mm/mempolicy.c:2204
 vm_area_alloc_pages mm/vmalloc.c:3063 [inline]
 __vmalloc_area_node mm/vmalloc.c:3139 [inline]
 __vmalloc_node_range+0x6ee/0xec0 mm/vmalloc.c:3320
 kvmalloc_node+0x121/0x170 mm/util.c:642
 kvmalloc include/linux/slab.h:728 [inline]
 xt_alloc_table_info+0x3d/0x80 net/netfilter/x_tables.c:1192
 do_replace net/ipv6/netfilter/ip6_tables.c:1139 [inline]
 do_ip6t_set_ctl+0x633/0x1800 net/ipv6/netfilter/ip6_tables.c:1636
 nf_setsockopt+0x18d/0x1b0 net/netfilter/nf_sockopt.c:101
 ipv6_setsockopt+0x11c/0x130 net/ipv6/ipv6_sockglue.c:997
 sctp_setsockopt+0x13d/0xe90 net/sctp/socket.c:4586
 sock_common_setsockopt+0x61/0x70 net/core/sock.c:3716
 do_sock_setsockopt net/socket.c:2311 [inline]
 __sys_setsockopt+0x1d4/0x240 net/socket.c:2334
 __do_sys_setsockopt net/socket.c:2343 [inline]
 __se_sys_setsockopt net/socket.c:2340 [inline]
 __x64_sys_setsockopt+0x66/0x80 net/socket.c:2340
 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+0x63/0x6b

read-write to 0xffffe8ffffd4d480 of 4 bytes by task 17350 on cpu 1:
 memcg_rstat_updated mm/memcontrol.c:724 [inline]
 __mod_memcg_state+0x10f/0x170 mm/memcontrol.c:823
 mod_memcg_state include/linux/memcontrol.h:1003 [inline]
 memcg_account_kmem mm/memcontrol.c:3257 [inline]
 obj_cgroup_uncharge_pages+0xe2/0x200 mm/memcontrol.c:3279
 __memcg_kmem_uncharge_page+0x53/0x100 mm/memcontrol.c:3353
 free_pages_prepare mm/page_alloc.c:1097 [inline]
 free_unref_page_prepare+0x61/0x2c0 mm/page_alloc.c:2346
 free_unref_page+0x34/0x170 mm/page_alloc.c:2486
 vfree+0x211/0x390 mm/vmalloc.c:2842
 kvfree+0x26/0x40 mm/util.c:661
 bpf_map_area_free+0x15/0x20 kernel/bpf/syscall.c:323
 htab_map_free+0x4ea/0x620 kernel/bpf/hashtab.c:1549
 bpf_map_free_deferred+0xaa/0x140 kernel/bpf/syscall.c:700
 process_one_work kernel/workqueue.c:2633 [inline]
 process_scheduled_works+0x5b8/0xa40 kernel/workqueue.c:2706
 worker_thread+0x525/0x730 kernel/workqueue.c:2787
 kthread+0x1d7/0x210 kernel/kthread.c:388
 ret_from_fork+0x48/0x60 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242

value changed: 0x0000001a -> 0x00000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 17350 Comm: kworker/u4:10 Not tainted 6.8.0-rc3-syzkaller-00317-g7521f258ea30 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: events_unbound bpf_map_free_deferred

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