================================================================== BUG: KCSAN: data-race in mem_cgroup_flush_stats / tick_do_update_jiffies64 read-write to 0xffffffff85a079c0 of 8 bytes by interrupt on cpu 0: tick_do_update_jiffies64+0x112/0x1b0 kernel/time/tick-sched.c:118 tick_sched_do_timer kernel/time/tick-sched.c:210 [inline] tick_sched_timer+0x7b/0x2c0 kernel/time/tick-sched.c:1485 __run_hrtimer kernel/time/hrtimer.c:1688 [inline] __hrtimer_run_queues+0x217/0x700 kernel/time/hrtimer.c:1752 hrtimer_interrupt+0x20d/0x7b0 kernel/time/hrtimer.c:1814 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1063 [inline] __sysvec_apic_timer_interrupt+0x52/0x190 arch/x86/kernel/apic/apic.c:1080 sysvec_apic_timer_interrupt+0x68/0x80 arch/x86/kernel/apic/apic.c:1074 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 memcg_account_kmem+0x106/0x140 mm/memcontrol.c:3068 obj_cgroup_uncharge_pages+0xb7/0x1a0 mm/memcontrol.c:3083 __memcg_kmem_uncharge_page+0x53/0x100 mm/memcontrol.c:3157 free_pages_prepare mm/page_alloc.c:1126 [inline] free_unref_page_prepare+0x65/0x2a0 mm/page_alloc.c:2312 free_unref_page+0x34/0x170 mm/page_alloc.c:2405 vfree+0x27c/0x410 mm/vmalloc.c:2842 __vmalloc_area_node mm/vmalloc.c:3203 [inline] __vmalloc_node_range+0xddb/0xea0 mm/vmalloc.c:3320 kvmalloc_node+0x121/0x160 mm/util.c:632 kvmalloc include/linux/slab.h:737 [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:1429 tcp_setsockopt+0x90/0xa0 net/ipv4/tcp.c:3677 sock_common_setsockopt+0x61/0x70 net/core/sock.c:3699 __sys_setsockopt+0x1d7/0x240 net/socket.c:2308 __do_sys_setsockopt net/socket.c:2319 [inline] __se_sys_setsockopt net/socket.c:2316 [inline] __x64_sys_setsockopt+0x66/0x80 net/socket.c:2316 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffffffff85a079c0 of 8 bytes by task 3124 on cpu 1: do_flush_stats mm/memcontrol.c:653 [inline] mem_cgroup_flush_stats+0x5d/0xd0 mm/memcontrol.c:664 prepare_scan_count mm/vmscan.c:2926 [inline] shrink_node+0x304/0x15c0 mm/vmscan.c:6538 shrink_zones mm/vmscan.c:6779 [inline] do_try_to_free_pages+0x43d/0xce0 mm/vmscan.c:6841 try_to_free_mem_cgroup_pages+0x1e2/0x480 mm/vmscan.c:7156 try_charge_memcg+0x280/0xd30 mm/memcontrol.c:2691 try_charge mm/memcontrol.c:2833 [inline] charge_memcg+0x51/0x200 mm/memcontrol.c:6983 mem_cgroup_swapin_charge_folio+0xd0/0x150 mm/memcontrol.c:7039 __read_swap_cache_async+0x339/0x590 mm/swap_state.c:488 read_swap_cache_async mm/swap_state.c:532 [inline] swap_cluster_readahead+0x47a/0x4e0 mm/swap_state.c:670 swapin_readahead+0x8d/0x710 mm/swap_state.c:858 do_swap_page+0x306/0x1780 mm/memory.c:3822 handle_pte_fault mm/memory.c:4981 [inline] __handle_mm_fault mm/memory.c:5119 [inline] handle_mm_fault+0xa2e/0x2cc0 mm/memory.c:5284 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: 0x000000010002a25f -> 0x000000010002a260 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 3124 Comm: syz-executor.3 Not tainted 6.6.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 ==================================================================