================================================================== BUG: KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64 read-write to 0xffffffff860079c0 of 8 bytes by interrupt on cpu 1: tick_do_update_jiffies64+0x112/0x1b0 kernel/time/tick-sched.c:118 tick_sched_do_timer kernel/time/tick-sched.c:232 [inline] tick_nohz_handler+0x7c/0x2d0 kernel/time/tick-sched.c:290 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x20d/0x5e0 kernel/time/hrtimer.c:1753 hrtimer_interrupt+0x210/0x7b0 kernel/time/hrtimer.c:1815 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x5c/0x1a0 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x6e/0x80 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 kcsan_setup_watchpoint+0x404/0x410 kernel/kcsan/core.c:705 next_uptodate_folio+0x5e6/0x7a0 mm/filemap.c:3489 filemap_map_pages+0x7b2/0x9f0 mm/filemap.c:3652 do_fault_around mm/memory.c:4879 [inline] do_read_fault mm/memory.c:4912 [inline] do_fault mm/memory.c:5051 [inline] do_pte_missing mm/memory.c:3897 [inline] handle_pte_fault mm/memory.c:5381 [inline] __handle_mm_fault mm/memory.c:5524 [inline] handle_mm_fault+0x1092/0x2a80 mm/memory.c:5689 faultin_page mm/gup.c:1290 [inline] __get_user_pages+0x49d/0xf10 mm/gup.c:1589 populate_vma_page_range mm/gup.c:2029 [inline] __mm_populate+0x25b/0x3b0 mm/gup.c:2132 mm_populate include/linux/mm.h:3469 [inline] vm_mmap_pgoff+0x1d6/0x290 mm/util.c:578 ksys_mmap_pgoff+0xd0/0x340 mm/mmap.c:1443 x64_sys_call+0x1835/0x2d70 arch/x86/include/generated/asm/syscalls_64.h:10 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffffffff860079c0 of 8 bytes by task 23211 on cpu 0: mem_cgroup_flush_stats_ratelimited+0x29/0x100 mm/memcontrol.c:906 count_shadow_nodes+0x6b/0x230 mm/workingset.c:685 do_shrink_slab+0x5a/0x690 mm/shrinker.c:382 shrink_slab_memcg mm/shrinker.c:548 [inline] shrink_slab+0x4ed/0x860 mm/shrinker.c:626 shrink_node_memcgs mm/vmscan.c:5891 [inline] shrink_node+0xa0d/0x13c0 mm/vmscan.c:5924 shrink_zones mm/vmscan.c:6168 [inline] do_try_to_free_pages+0x3c6/0xc50 mm/vmscan.c:6230 try_to_free_mem_cgroup_pages+0x1eb/0x4e0 mm/vmscan.c:6545 try_charge_memcg+0x27a/0xcd0 mm/memcontrol.c:2944 try_charge mm/memcontrol.c:3092 [inline] charge_memcg mm/memcontrol.c:7495 [inline] mem_cgroup_swapin_charge_folio+0x107/0x1a0 mm/memcontrol.c:7580 __read_swap_cache_async+0x2b9/0x520 mm/swap_state.c:514 swap_cluster_readahead+0x276/0x3f0 mm/swap_state.c:678 swapin_readahead+0xe2/0x7a0 mm/swap_state.c:904 do_swap_page+0x3bc/0x1840 mm/memory.c:4065 handle_pte_fault mm/memory.c:5384 [inline] __handle_mm_fault mm/memory.c:5524 [inline] handle_mm_fault+0x809/0x2a80 mm/memory.c:5689 do_user_addr_fault arch/x86/mm/fault.c:1338 [inline] handle_page_fault arch/x86/mm/fault.c:1481 [inline] exc_page_fault+0x3b9/0x650 arch/x86/mm/fault.c:1539 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 value changed: 0x0000000100001029 -> 0x000000010000102a Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 23211 Comm: syz.0.6925 Not tainted 6.10.0-rc6-syzkaller-00041-g9903efbddba0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 ==================================================================