================================================================== BUG: KCSAN: data-race in __refill_stock / drain_all_stock read-write to 0xffff888237d2a690 of 4 bytes by task 12980 on cpu 1: __refill_stock+0x7f/0xb0 mm/memcontrol.c:2389 refill_stock mm/memcontrol.c:2400 [inline] obj_cgroup_uncharge_pages+0x134/0x200 mm/memcontrol.c:3280 __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 __vmalloc_area_node mm/vmalloc.c:3203 [inline] __vmalloc_node_range+0xdf9/0xec0 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/ipv4/netfilter/ip_tables.c:1122 [inline] do_ipt_set_ctl+0x62f/0x1740 net/ipv4/netfilter/ip_tables.c:1627 nf_setsockopt+0x18d/0x1b0 net/netfilter/nf_sockopt.c:101 ip_setsockopt+0xe6/0x100 net/ipv4/ip_sockglue.c:1420 udp_setsockopt+0x95/0xa0 net/ipv4/udp.c:2783 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+0xcd/0x1d0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b read to 0xffff888237d2a690 of 4 bytes by task 13009 on cpu 0: drain_all_stock+0xd3/0x2e0 mm/memcontrol.c:2430 try_charge_memcg+0x6c2/0xd20 mm/memcontrol.c:2790 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/ipv4/netfilter/ip_tables.c:1122 [inline] do_ipt_set_ctl+0x62f/0x1740 net/ipv4/netfilter/ip_tables.c:1627 nf_setsockopt+0x18d/0x1b0 net/netfilter/nf_sockopt.c:101 ip_setsockopt+0xe6/0x100 net/ipv4/ip_sockglue.c:1420 udp_setsockopt+0x95/0xa0 net/ipv4/udp.c:2783 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+0xcd/0x1d0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b value changed: 0x0000002d -> 0x00000035 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 13009 Comm: syz-executor.0 Not tainted 6.8.0-rc7-syzkaller-00020-g5847c9777c30 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 ==================================================================