================================================================== 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 console_flush_one_record arch/x86/include/asm/irqflags.h:-1 [inline] console_flush_all+0x567/0x6f0 kernel/printk/printk.c:3289 __console_flush_and_unlock kernel/printk/printk.c:3319 [inline] console_unlock+0xa1/0x2e0 kernel/printk/printk.c:3359 vprintk_emit+0x3ee/0x610 kernel/printk/printk.c:2426 vprintk_default+0x26/0x30 kernel/printk/printk.c:2441 vprintk+0x1d/0x30 kernel/printk/printk_safe.c:82 _printk+0x79/0xa0 kernel/printk/printk.c:2451 mem_cgroup_print_oom_meminfo+0x84/0x250 mm/memcontrol.c:1575 dump_header+0xa3/0x240 mm/oom_kill.c:469 oom_kill_process+0x295/0x350 mm/oom_kill.c:1047 out_of_memory+0x979/0xb80 mm/oom_kill.c:1185 mem_cgroup_out_of_memory mm/memcontrol.c:1682 [inline] mem_cgroup_oom mm/memcontrol.c:1705 [inline] try_charge_memcg+0x610/0xa10 mm/memcontrol.c:2430 try_charge mm/memcontrol.c:2530 [inline] charge_memcg+0x51/0xc0 mm/memcontrol.c:4728 mem_cgroup_swapin_charge_folio+0xcc/0x150 mm/memcontrol.c:4814 __read_swap_cache_async+0x17b/0x2d0 mm/swap_state.c:481 swap_cluster_readahead+0x262/0x3c0 mm/swap_state.c:646 swapin_readahead+0xde/0x820 mm/swap_state.c:821 do_swap_page+0x2b4/0x21e0 mm/memory.c:4753 handle_pte_fault mm/memory.c:6276 [inline] __handle_mm_fault mm/memory.c:6411 [inline] handle_mm_fault+0x9d8/0x2c60 mm/memory.c:6580 do_user_addr_fault+0x630/0x1080 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:618 read to 0xffffffff86809a00 of 8 bytes by task 7376 on cpu 1: mem_cgroup_flush_stats_ratelimited+0x29/0x70 mm/memcontrol.c:636 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:6020 [inline] shrink_node+0x6a9/0x2010 mm/vmscan.c:6059 shrink_zones mm/vmscan.c:6298 [inline] do_try_to_free_pages+0x3f6/0xcd0 mm/vmscan.c:6360 try_to_free_mem_cgroup_pages+0x1ab/0x410 mm/vmscan.c:6688 try_charge_memcg+0x383/0xa10 mm/memcontrol.c:2388 obj_cgroup_charge_pages+0xa6/0x150 mm/memcontrol.c:2823 __memcg_kmem_charge_page+0x9f/0x170 mm/memcontrol.c:2867 __alloc_frozen_pages_noprof+0x18f/0x360 mm/page_alloc.c:5227 __alloc_pages_noprof+0x9/0x20 mm/page_alloc.c:5244 __alloc_pages_node_noprof include/linux/gfp.h:285 [inline] alloc_pages_node_noprof include/linux/gfp.h:312 [inline] vm_area_alloc_pages mm/vmalloc.c:3720 [inline] __vmalloc_area_node mm/vmalloc.c:3863 [inline] __vmalloc_node_range_noprof+0xa1f/0x1310 mm/vmalloc.c:4051 __bpf_map_area_alloc kernel/bpf/syscall.c:401 [inline] bpf_map_area_alloc+0xfa/0x150 kernel/bpf/syscall.c:408 bloom_map_alloc+0x1b8/0x2c0 kernel/bpf/bloom_filter.c:146 map_create+0x862/0xda0 kernel/bpf/syscall.c:1514 __sys_bpf+0x54e/0x7c0 kernel/bpf/syscall.c:6146 __do_sys_bpf kernel/bpf/syscall.c:6274 [inline] __se_sys_bpf kernel/bpf/syscall.c:6272 [inline] __x64_sys_bpf+0x41/0x50 kernel/bpf/syscall.c:6272 x64_sys_call+0x28e1/0x3000 arch/x86/include/generated/asm/syscalls_64.h:322 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 value changed: 0x00000000ffffb393 -> 0x00000000ffffb394 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 7376 Comm: syz.2.1472 Not tainted syzkaller #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ==================================================================