================================================================== BUG: KCSAN: data-race in do_try_to_free_pages / shrink_node write to 0xffff888107e13870 of 8 bytes by task 18154 on cpu 1: snapshot_refaults mm/vmscan.c:6109 [inline] do_try_to_free_pages+0x95f/0xce0 mm/vmscan.c:6171 try_to_free_mem_cgroup_pages+0x1e2/0x480 mm/vmscan.c:6463 try_charge_memcg+0x280/0xd30 mm/memcontrol.c:2742 obj_cgroup_charge_pages+0xab/0x130 mm/memcontrol.c:3254 __memcg_kmem_charge_page+0x9c/0x170 mm/memcontrol.c:3280 __alloc_pages+0x1bb/0x340 mm/page_alloc.c:4585 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+0x6d2/0xea0 mm/vmalloc.c:3320 kvmalloc_node+0x121/0x160 mm/util.c:632 kvmalloc include/linux/slab.h:738 [inline] xt_alloc_table_info+0x3d/0x80 net/netfilter/x_tables.c:1192 do_replace net/ipv4/netfilter/arp_tables.c:970 [inline] do_arpt_set_ctl+0x634/0x13b0 net/ipv4/netfilter/arp_tables.c:1421 nf_setsockopt+0x18d/0x1b0 net/netfilter/nf_sockopt.c:101 ip_setsockopt+0xe6/0x100 net/ipv4/ip_sockglue.c:1426 tcp_setsockopt+0x90/0xa0 net/ipv4/tcp.c:3704 sock_common_setsockopt+0x61/0x70 net/core/sock.c:3711 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:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b read to 0xffff888107e13870 of 8 bytes by task 18153 on cpu 0: prepare_scan_control mm/vmscan.c:2249 [inline] shrink_node+0x3b3/0x15c0 mm/vmscan.c:5845 shrink_zones mm/vmscan.c:6086 [inline] do_try_to_free_pages+0x43d/0xce0 mm/vmscan.c:6148 try_to_free_mem_cgroup_pages+0x1e2/0x480 mm/vmscan.c:6463 try_charge_memcg+0x280/0xd30 mm/memcontrol.c:2742 try_charge mm/memcontrol.c:2884 [inline] charge_memcg mm/memcontrol.c:7209 [inline] mem_cgroup_swapin_charge_folio+0x107/0x190 mm/memcontrol.c:7294 __read_swap_cache_async+0x2f6/0x550 mm/swap_state.c:490 swap_cluster_readahead+0x27c/0x4c0 mm/swap_state.c:655 swapin_readahead+0xe9/0x7f0 mm/swap_state.c:878 do_swap_page+0x4a0/0x1670 mm/memory.c:3883 handle_pte_fault mm/memory.c:5041 [inline] __handle_mm_fault mm/memory.c:5179 [inline] handle_mm_fault+0xa36/0x2dd0 mm/memory.c:5344 do_user_addr_fault arch/x86/mm/fault.c:1364 [inline] handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x3ff/0x6c0 arch/x86/mm/fault.c:1561 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 value changed: 0x0000000000000016 -> 0x0000000000000018 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 18153 Comm: syz-executor.0 Not tainted 6.7.0-rc1-syzkaller-00139-g6bc40e44f1dd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 ==================================================================