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BUG: KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64

read-write to 0xffffffff86809a00 of 8 bytes by interrupt on cpu 0:
 tick_do_update_jiffies64+0x113/0x1c0 kernel/time/tick-sched.c:118
 tick_sched_do_timer kernel/time/tick-sched.c:253 [inline]
 tick_nohz_handler+0x8d/0x3d0 kernel/time/tick-sched.c:312
 __run_hrtimer kernel/time/hrtimer.c:1777 [inline]
 __hrtimer_run_queues+0x20f/0x5a0 kernel/time/hrtimer.c:1841
 hrtimer_interrupt+0x21a/0x460 kernel/time/hrtimer.c:1903
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1045 [inline]
 __sysvec_apic_timer_interrupt+0x5f/0x1d0 arch/x86/kernel/apic/apic.c:1062
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
 sysvec_apic_timer_interrupt+0x6f/0x80 arch/x86/kernel/apic/apic.c:1056
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
 native_irq_enable arch/x86/include/asm/irqflags.h:42 [inline]
 arch_local_irq_enable arch/x86/include/asm/irqflags.h:119 [inline]
 __folio_migrate_mapping+0xa84/0xb30 mm/migrate.c:694
 __migrate_folio mm/migrate.c:860 [inline]
 migrate_folio+0x91/0xf0 mm/migrate.c:887
 move_to_new_folio+0x90/0x450 mm/migrate.c:1102
 migrate_folio_move mm/migrate.c:1365 [inline]
 migrate_folios_move mm/migrate.c:1713 [inline]
 migrate_pages_batch+0x1289/0x1b60 mm/migrate.c:1969
 migrate_pages_sync mm/migrate.c:1999 [inline]
 migrate_pages+0xf55/0x1760 mm/migrate.c:2108
 do_mbind mm/mempolicy.c:1539 [inline]
 kernel_mbind mm/mempolicy.c:1682 [inline]
 __do_sys_mbind mm/mempolicy.c:1756 [inline]
 __se_sys_mbind+0x975/0xac0 mm/mempolicy.c:1752
 __x64_sys_mbind+0x78/0x90 mm/mempolicy.c:1752
 x64_sys_call+0x2a2b/0x3000 arch/x86/include/generated/asm/syscalls_64.h:238
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd8/0x2a0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffffffff86809a00 of 8 bytes by task 17284 on cpu 1:
 mem_cgroup_flush_stats_ratelimited+0x29/0x70 mm/memcontrol.c:635
 count_shadow_nodes+0x6a/0x230 mm/workingset.c:678
 do_shrink_slab+0x63/0x680 mm/shrinker.c:384
 shrink_slab_memcg mm/shrinker.c:550 [inline]
 shrink_slab+0x4f5/0x840 mm/shrinker.c:628
 shrink_node_memcgs mm/vmscan.c:6056 [inline]
 shrink_node+0x6c3/0x2120 mm/vmscan.c:6095
 shrink_zones mm/vmscan.c:6339 [inline]
 do_try_to_free_pages+0x3f6/0xcd0 mm/vmscan.c:6401
 try_to_free_mem_cgroup_pages+0x1ab/0x410 mm/vmscan.c:6729
 try_charge_memcg+0x383/0xa10 mm/memcontrol.c:2356
 try_charge mm/memcontrol.c:2498 [inline]
 charge_memcg+0x51/0xc0 mm/memcontrol.c:4693
 mem_cgroup_swapin_charge_folio+0xcc/0x150 mm/memcontrol.c:4779
 __read_swap_cache_async+0x17b/0x2d0 mm/swap_state.c:481
 swap_cluster_readahead+0x362/0x3c0 mm/swap_state.c:669
 swapin_readahead+0xde/0x800 mm/swap_state.c:826
 do_swap_page+0x2ae/0x2370 mm/memory.c:4714
 handle_pte_fault mm/memory.c:6237 [inline]
 __handle_mm_fault mm/memory.c:6366 [inline]
 handle_mm_fault+0x9a5/0x2be0 mm/memory.c:6535
 do_user_addr_fault+0x3fe/0x1080 arch/x86/mm/fault.c:1387
 handle_page_fault arch/x86/mm/fault.c:1476 [inline]
 exc_page_fault+0x62/0xa0 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
 __get_user_8+0x14/0x30 arch/x86/lib/getuser.S:100
 fetch_robust_entry kernel/futex/core.c:1139 [inline]
 exit_robust_list+0x31/0x280 kernel/futex/core.c:1167
 futex_cleanup kernel/futex/core.c:1411 [inline]
 futex_exit_release+0xe0/0x130 kernel/futex/core.c:1512
 exit_mm_release+0x1a/0x30 kernel/fork.c:1450
 exit_mm+0x38/0x180 kernel/exit.c:556
 do_exit+0x427/0x15d0 kernel/exit.c:961
 do_group_exit+0xff/0x140 kernel/exit.c:1114
 get_signal+0xe58/0xf70 kernel/signal.c:3034
 arch_do_signal_or_restart+0x96/0x450 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline]
 exit_to_user_mode_loop+0x6a/0x740 kernel/entry/common.c:75
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
 do_syscall_64+0x202/0x2a0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x00000001000070a3 -> 0x00000001000070a4

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 17284 Comm: syz.0.4272 Tainted: G        W           syzkaller #0 PREEMPT(voluntary) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
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