================================================================== BUG: KCSAN: data-race in mem_cgroup_flush_stats / tick_do_update_jiffies64 read-write to 0xffffffff85a079c0 of 8 bytes by interrupt on cpu 1: 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:1685 [inline] __hrtimer_run_queues+0x217/0x700 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x20d/0x7b0 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x73/0x210 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x68/0x80 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 __preempt_count_dec_and_test arch/x86/include/asm/preempt.h:95 [inline] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock_irqrestore+0x3d/0x50 kernel/locking/spinlock.c:194 free_unref_page+0xe3/0x170 mm/page_alloc.c:2682 vfree+0x27c/0x420 mm/vmalloc.c:2798 __vmalloc_area_node mm/vmalloc.c:3149 [inline] __vmalloc_node_range+0xde0/0xea0 mm/vmalloc.c:3266 kvmalloc_node+0x121/0x160 mm/util.c:629 kvmalloc include/linux/slab.h:697 [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:1467 tcp_setsockopt+0x90/0xa0 net/ipv4/tcp.c:3804 sock_common_setsockopt+0x61/0x70 net/core/sock.c:3657 __sys_setsockopt+0x1c9/0x230 net/socket.c:2273 __do_sys_setsockopt net/socket.c:2284 [inline] __se_sys_setsockopt net/socket.c:2281 [inline] __x64_sys_setsockopt+0x66/0x80 net/socket.c:2281 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 1996 on cpu 0: do_flush_stats mm/memcontrol.c:653 [inline] mem_cgroup_flush_stats+0x5d/0xd0 mm/memcontrol.c:672 prepare_scan_count mm/vmscan.c:2900 [inline] shrink_node+0x2fa/0x1500 mm/vmscan.c:6485 shrink_zones mm/vmscan.c:6722 [inline] do_try_to_free_pages+0x40d/0xc80 mm/vmscan.c:6784 try_to_free_mem_cgroup_pages+0x1e2/0x480 mm/vmscan.c:7099 try_charge_memcg+0x27d/0xd20 mm/memcontrol.c:2724 obj_cgroup_charge_pages+0xab/0x130 mm/memcontrol.c:3138 __memcg_kmem_charge_page+0x1d5/0x2c0 mm/memcontrol.c:3164 __alloc_pages+0x1bb/0x340 mm/page_alloc.c:4785 alloc_pages+0x3e1/0x4e0 vm_area_alloc_pages mm/vmalloc.c:3009 [inline] __vmalloc_area_node mm/vmalloc.c:3085 [inline] __vmalloc_node_range+0x6d2/0xea0 mm/vmalloc.c:3266 kvmalloc_node+0x121/0x160 mm/util.c:629 kvmalloc include/linux/slab.h:697 [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:1467 tcp_setsockopt+0x90/0xa0 net/ipv4/tcp.c:3804 sock_common_setsockopt+0x61/0x70 net/core/sock.c:3657 __sys_setsockopt+0x1c9/0x230 net/socket.c:2273 __do_sys_setsockopt net/socket.c:2284 [inline] __se_sys_setsockopt net/socket.c:2281 [inline] __x64_sys_setsockopt+0x66/0x80 net/socket.c:2281 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 value changed: 0x0000000100017e1b -> 0x0000000100017e1c Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 1996 Comm: syz-executor.3 Not tainted 6.4.0-syzkaller-00082-gc0a572d9d32f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 ==================================================================