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BUG: KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64

read-write to 0xffffffff868099c0 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:232 [inline]
 tick_nohz_handler+0x7f/0x2d0 kernel/time/tick-sched.c:290
 __run_hrtimer kernel/time/hrtimer.c:1761 [inline]
 __hrtimer_run_queues+0x20f/0x5a0 kernel/time/hrtimer.c:1825
 hrtimer_interrupt+0x21a/0x460 kernel/time/hrtimer.c:1887
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline]
 __sysvec_apic_timer_interrupt+0x5c/0x1d0 arch/x86/kernel/apic/apic.c:1056
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0x6f/0x80 arch/x86/kernel/apic/apic.c:1050
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
 kcsan_setup_watchpoint+0x415/0x430 kernel/kcsan/core.c:705
 format_decode+0x2fd/0x580 lib/vsprintf.c:2768
 vsnprintf+0xcb/0x890 lib/vsprintf.c:2869
 sprintf+0x88/0xb0 lib/vsprintf.c:3089
 __sprint_symbol+0x105/0x1b0 kernel/kallsyms.c:444
 sprint_symbol+0x24/0x30 kernel/kallsyms.c:476
 symbol_string+0x15f/0x250 lib/vsprintf.c:1009
 pointer+0x60c/0xcf0 lib/vsprintf.c:2515
 vsnprintf+0x491/0x890 lib/vsprintf.c:2930
 seq_vprintf fs/seq_file.c:391 [inline]
 seq_printf+0xd3/0x140 fs/seq_file.c:406
 vmalloc_info_show+0x15d/0x850 mm/vmalloc.c:5060
 seq_read_iter+0x319/0x940 fs/seq_file.c:230
 proc_reg_read_iter+0x110/0x180 fs/proc/inode.c:299
 new_sync_read fs/read_write.c:491 [inline]
 vfs_read+0x649/0x770 fs/read_write.c:572
 ksys_pread64 fs/read_write.c:763 [inline]
 __do_sys_pread64 fs/read_write.c:771 [inline]
 __se_sys_pread64 fs/read_write.c:768 [inline]
 __x64_sys_pread64+0xfd/0x150 fs/read_write.c:768
 x64_sys_call+0x29e2/0x2ff0 arch/x86/include/generated/asm/syscalls_64.h:18
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffffffff868099c0 of 8 bytes by task 3307 on cpu 1:
 mem_cgroup_flush_stats_ratelimited+0x29/0x70 mm/memcontrol.c:634
 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+0x448/0x760 mm/shrinker.c:628
 shrink_node_memcgs mm/vmscan.c:6053 [inline]
 shrink_node+0x6c3/0x2120 mm/vmscan.c:6092
 shrink_zones mm/vmscan.c:6336 [inline]
 do_try_to_free_pages+0x3f6/0xcd0 mm/vmscan.c:6398
 try_to_free_mem_cgroup_pages+0x1ab/0x410 mm/vmscan.c:6726
 try_charge_memcg+0x358/0x9e0 mm/memcontrol.c:2357
 try_charge mm/memcontrol.c:2499 [inline]
 charge_memcg+0x51/0xc0 mm/memcontrol.c:4702
 __mem_cgroup_charge+0x28/0xb0 mm/memcontrol.c:4719
 mem_cgroup_charge include/linux/memcontrol.h:654 [inline]
 filemap_add_folio+0x4e/0x1b0 mm/filemap.c:964
 __filemap_get_folio+0x31e/0x6b0 mm/filemap.c:1991
 filemap_fault+0x41f/0xb40 mm/filemap.c:3455
 __do_fault+0xb9/0x200 mm/memory.c:5152
 do_read_fault mm/memory.c:5573 [inline]
 do_fault mm/memory.c:5707 [inline]
 do_pte_missing mm/memory.c:4234 [inline]
 handle_pte_fault mm/memory.c:6052 [inline]
 __handle_mm_fault mm/memory.c:6195 [inline]
 handle_mm_fault+0xf78/0x2c20 mm/memory.c:6364
 do_user_addr_fault+0x636/0x1090 arch/x86/mm/fault.c:1336
 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:623

value changed: 0x00000000ffffaa2b -> 0x00000000ffffaa2c

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 3307 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
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