oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0,oom_memcg=/syz3,task_memcg=/syz3,task=syz.3.172,pid=4172,uid=0
Memory cgroup out of memory: Killed process 4172 (syz.3.172) total-vm:96084kB, anon-rss:1236kB, file-rss:20804kB, shmem-rss:0kB, UID:0 pgtables:96kB oom_score_adj:1000
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BUG: KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64

read-write to 0xffffffff86c07a00 of 8 bytes by interrupt on cpu 1:
 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+0x88/0x380 kernel/time/tick-sched.c:310
 __run_hrtimer kernel/time/hrtimer.c:2032 [inline]
 __hrtimer_run_queues+0x1f8/0x510 kernel/time/hrtimer.c:2096
 hrtimer_interrupt+0x257/0x810 kernel/time/hrtimer.c:2215
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1051 [inline]
 __sysvec_apic_timer_interrupt+0x5f/0x1c0 arch/x86/kernel/apic/apic.c:1068
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0x6f/0x80 arch/x86/kernel/apic/apic.c:1062
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
 kcsan_setup_watchpoint+0x3e8/0x450 kernel/kcsan/core.c:705
 zonelist_zone include/linux/mmzone.h:1814 [inline]
 shrink_zones mm/vmscan.c:6396 [inline]
 do_try_to_free_pages+0x53c/0xc90 mm/vmscan.c:6516
 try_to_free_mem_cgroup_pages+0x201/0x420 mm/vmscan.c:6838
 try_charge_memcg+0x375/0xa00 mm/memcontrol.c:2630
 charge_memcg+0x6d/0x120 mm/memcontrol.c:5024
 __mem_cgroup_charge+0x28/0xb0 mm/memcontrol.c:5041
 mem_cgroup_charge include/linux/memcontrol.h:644 [inline]
 filemap_add_folio+0x110/0x350 mm/filemap.c:960
 __filemap_get_folio_mpol+0x32e/0x840 mm/filemap.c:2022
 __filemap_get_folio include/linux/pagemap.h:763 [inline]
 filemap_fault+0x452/0xb60 mm/filemap.c:3576
 __do_fault mm/memory.c:5474 [inline]
 do_shared_fault mm/memory.c:5973 [inline]
 do_fault mm/memory.c:6047 [inline]
 do_pte_missing mm/memory.c:4566 [inline]
 handle_pte_fault mm/memory.c:6427 [inline]
 __handle_mm_fault mm/memory.c:6565 [inline]
 handle_mm_fault+0x19a1/0x2da0 mm/memory.c:6734
 do_user_addr_fault+0x634/0x1060 arch/x86/mm/fault.c:1339
 handle_page_fault arch/x86/mm/fault.c:1479 [inline]
 exc_page_fault+0x62/0xa0 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595

read to 0xffffffff86c07a00 of 8 bytes by task 25798 on cpu 0:
 mem_cgroup_flush_stats_ratelimited+0x29/0x50 mm/memcontrol.c:743
 count_shadow_nodes+0x6a/0x250 mm/workingset.c:692
 do_shrink_slab+0x61/0x650 mm/shrinker.c:382
 shrink_slab_memcg mm/shrinker.c:553 [inline]
 shrink_slab+0x53b/0x8e0 mm/shrinker.c:631
 shrink_node_memcgs mm/vmscan.c:6173 [inline]
 shrink_node+0x6d4/0x2080 mm/vmscan.c:6215
 shrink_zones mm/vmscan.c:6454 [inline]
 do_try_to_free_pages+0x408/0xc90 mm/vmscan.c:6516
 try_to_free_mem_cgroup_pages+0x201/0x420 mm/vmscan.c:6838
 try_charge_memcg+0x375/0xa00 mm/memcontrol.c:2630
 obj_cgroup_charge_pages mm/memcontrol.c:3072 [inline]
 __memcg_kmem_charge_page+0x199/0x3a0 mm/memcontrol.c:3116
 __alloc_frozen_pages_noprof+0x18a/0x350 mm/page_alloc.c:5238
 __alloc_pages_noprof mm/page_alloc.c:5255 [inline]
 alloc_pages_bulk_noprof+0x4c8/0x550 mm/page_alloc.c:5175
 alloc_pages_bulk_mempolicy_noprof+0x358/0xe90 mm/mempolicy.c:2798
 vm_area_alloc_pages mm/vmalloc.c:3700 [inline]
 __vmalloc_area_node mm/vmalloc.c:3878 [inline]
 __vmalloc_node_range_noprof+0x88e/0x11e0 mm/vmalloc.c:4064
 __kvmalloc_node_noprof+0x3d4/0x640 mm/slub.c:6861
 futex_hash_allocate+0x192/0x920 kernel/futex/core.c:1823
 futex_hash_prctl+0xd8/0xf0 kernel/futex/core.c:1995
 __do_sys_prctl kernel/sys.c:2885 [inline]
 __se_sys_prctl+0x4f4/0x13c0 kernel/sys.c:2534
 __x64_sys_prctl+0x67/0x80 kernel/sys.c:2534
 x64_sys_call+0x2533/0x3020 arch/x86/include/generated/asm/syscalls_64.h:158
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x136/0x3c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x000000010001c1d9 -> 0x000000010001c1da

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 25798 Comm: syz.3.6259 Tainted: G        W           syzkaller #0 PREEMPT(lazy) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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