================================================================== 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:199 [inline] tick_sched_timer+0x7b/0x2c0 kernel/time/tick-sched.c:1474 __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 kcsan_setup_watchpoint+0x3fe/0x410 kernel/kcsan/core.c:705 task_css include/linux/cgroup.h:437 [inline] mem_cgroup_from_task+0x29/0x40 mm/memcontrol.c:1026 count_memcg_event_mm include/linux/memcontrol.h:1109 [inline] mm_account_fault mm/memory.c:5123 [inline] handle_mm_fault+0x6d7/0x2c60 mm/memory.c:5259 do_user_addr_fault arch/x86/mm/fault.c:1349 [inline] handle_page_fault arch/x86/mm/fault.c:1534 [inline] exc_page_fault+0x256/0x780 arch/x86/mm/fault.c:1590 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 read to 0xffffffff85a079c0 of 8 bytes by task 17705 on cpu 1: do_flush_stats mm/memcontrol.c:653 [inline] mem_cgroup_flush_stats+0x5d/0xd0 mm/memcontrol.c:672 prepare_scan_count mm/vmscan.c:2914 [inline] shrink_node+0x2fa/0x1500 mm/vmscan.c:6499 shrink_zones mm/vmscan.c:6736 [inline] do_try_to_free_pages+0x40d/0xc80 mm/vmscan.c:6798 try_to_free_mem_cgroup_pages+0x1e2/0x480 mm/vmscan.c:7113 reclaim_high+0xca/0x110 mm/memcontrol.c:2432 mem_cgroup_handle_over_high+0x8c/0x1a0 mm/memcontrol.c:2617 try_charge_memcg+0xb35/0xd20 mm/memcontrol.c:2855 try_charge mm/memcontrol.c:2866 [inline] charge_memcg+0x51/0x200 mm/memcontrol.c:7021 __mem_cgroup_charge+0x29/0xa0 mm/memcontrol.c:7042 mem_cgroup_charge include/linux/memcontrol.h:679 [inline] wp_page_copy mm/memory.c:3098 [inline] do_wp_page+0xb9c/0x1fd0 mm/memory.c:3432 handle_pte_fault mm/memory.c:4964 [inline] __handle_mm_fault mm/memory.c:5089 [inline] handle_mm_fault+0x5ba/0x2c60 mm/memory.c:5243 do_user_addr_fault arch/x86/mm/fault.c:1440 [inline] handle_page_fault arch/x86/mm/fault.c:1534 [inline] exc_page_fault+0x67e/0x780 arch/x86/mm/fault.c:1590 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 __put_user_4+0x11/0x20 arch/x86/lib/putuser.S:89 schedule_tail+0x3d/0x50 kernel/sched/core.c:5276 ret_from_fork+0x8/0x30 arch/x86/entry/entry_64.S:293 value changed: 0x0000000100043477 -> 0x0000000100043478 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 17705 Comm: syz-executor.1 Not tainted 6.3.0-syzkaller-13505-g17784de648be #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 ==================================================================