================================================================== 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 kcsan_setup_watchpoint+0x3fe/0x410 kernel/kcsan/core.c:705 __vmalloc_area_node mm/vmalloc.c:3147 [inline] __vmalloc_node_range+0x9b7/0xea0 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+0x615/0x1390 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:3698 __sys_setsockopt+0x1d7/0x240 net/socket.c:2307 __do_sys_setsockopt net/socket.c:2318 [inline] __se_sys_setsockopt net/socket.c:2315 [inline] __x64_sys_setsockopt+0x66/0x80 net/socket.c:2315 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 1617 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+0x280/0xd20 mm/memcontrol.c:2691 try_charge mm/memcontrol.c:2833 [inline] charge_memcg+0x51/0x200 mm/memcontrol.c:6971 mem_cgroup_swapin_charge_folio+0xd0/0x150 mm/memcontrol.c:7027 __read_swap_cache_async+0x339/0x590 mm/swap_state.c:488 swap_cluster_readahead+0x29d/0x4e0 mm/swap_state.c:650 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:1413 [inline] handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x2f7/0x6c0 arch/x86/mm/fault.c:1561 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 __get_user_8+0x11/0x20 arch/x86/lib/getuser.S:85 fetch_robust_entry kernel/futex/core.c:758 [inline] exit_robust_list+0x31/0x270 kernel/futex/core.c:786 futex_cleanup kernel/futex/core.c:1018 [inline] futex_exit_release+0xdf/0x130 kernel/futex/core.c:1119 exit_mm_release+0x1a/0x30 kernel/fork.c:1651 exit_mm+0x37/0x180 kernel/exit.c:539 do_exit+0x580/0x1660 kernel/exit.c:861 do_group_exit+0x101/0x150 kernel/exit.c:1024 get_signal+0xf3c/0x1090 kernel/signal.c:2892 arch_do_signal_or_restart+0x95/0x4b0 arch/x86/kernel/signal.c:309 exit_to_user_mode_loop+0x6f/0xe0 kernel/entry/common.c:168 exit_to_user_mode_prepare+0x6c/0xb0 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x26/0x140 kernel/entry/common.c:296 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x0000000100042913 -> 0x0000000100042914 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 1617 Comm: syz-executor.1 Not tainted 6.5.0-syzkaller-11191-g6e32dfcccfcc #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 ==================================================================