================================================================== BUG: KCSAN: data-race in __refill_stock / drain_all_stock read-write to 0xffff888237c2a690 of 4 bytes by task 3108 on cpu 0: __refill_stock+0x7f/0xb0 mm/memcontrol.c:2384 refill_stock mm/memcontrol.c:2395 [inline] obj_cgroup_uncharge_pages+0x134/0x200 mm/memcontrol.c:3254 refill_obj_stock+0x15c/0x1d0 mm/memcontrol.c:3526 obj_cgroup_uncharge+0xe/0x10 mm/memcontrol.c:3575 __memcg_slab_free_hook+0xa9/0x120 mm/slub.c:2010 memcg_slab_free_hook mm/slub.c:2030 [inline] slab_free mm/slub.c:4297 [inline] kfree+0x19a/0x260 mm/slub.c:4409 kvfree+0x35/0x40 mm/util.c:663 xt_free_table_info+0xed/0x110 net/netfilter/x_tables.c:1212 __do_replace+0x4bc/0x580 net/ipv6/netfilter/ip6_tables.c:1101 do_replace net/ipv6/netfilter/ip6_tables.c:1154 [inline] do_ip6t_set_ctl+0x1503/0x17f0 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 tcp_setsockopt+0x90/0xa0 net/ipv4/tcp.c:3723 sock_common_setsockopt+0x61/0x70 net/core/sock.c:3715 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+0x59/0x120 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b read to 0xffff888237c2a690 of 4 bytes by task 3785 on cpu 1: drain_all_stock+0xd3/0x2e0 mm/memcontrol.c:2425 try_charge_memcg+0x6c2/0xd20 mm/memcontrol.c:2770 obj_cgroup_charge_pages+0xbd/0x1c0 mm/memcontrol.c:3275 __memcg_kmem_charge_page+0x9c/0x170 mm/memcontrol.c:3301 __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+0x6d2/0xea0 mm/vmalloc.c:3320 kvmalloc_node+0x121/0x160 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/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:1418 tcp_setsockopt+0x90/0xa0 net/ipv4/tcp.c:3723 sock_common_setsockopt+0x61/0x70 net/core/sock.c:3715 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+0x59/0x120 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b value changed: 0x0000003f -> 0x00000040 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 3785 Comm: syz-executor.5 Not tainted 6.7.0-syzkaller-13004-g4fbbed787267 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 ==================================================================