================================================================== 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:1692 [inline] __hrtimer_run_queues+0x214/0x5e0 kernel/time/hrtimer.c:1756 hrtimer_interrupt+0x210/0x7b0 kernel/time/hrtimer.c:1818 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 __preempt_count_dec_and_test arch/x86/include/asm/preempt.h:94 [inline] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock_irqrestore+0x3d/0x60 kernel/locking/spinlock.c:194 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] __wake_up_common_lock kernel/sched/wait.c:108 [inline] __wake_up+0x88/0xb0 kernel/sched/wait.c:127 io_cqring_wake io_uring/io_uring.h:283 [inline] io_cq_unlock_post io_uring/io_uring.c:665 [inline] __io_cqring_overflow_flush+0x3cc/0x430 io_uring/io_uring.c:714 io_cqring_do_overflow_flush io_uring/io_uring.c:722 [inline] io_cqring_wait io_uring/io_uring.c:2680 [inline] __do_sys_io_uring_enter io_uring/io_uring.c:3713 [inline] __se_sys_io_uring_enter+0x140b/0x17f0 io_uring/io_uring.c:3603 __x64_sys_io_uring_enter+0x78/0x90 io_uring/io_uring.c:3603 x64_sys_call+0x263/0x2d30 arch/x86/include/generated/asm/syscalls_64.h:427 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffffffff860079c0 of 8 bytes by task 11938 on cpu 0: mem_cgroup_flush_stats_ratelimited+0x29/0x100 mm/memcontrol.c:772 count_shadow_nodes+0x69/0x3d0 mm/workingset.c:684 do_shrink_slab+0x5a/0x690 mm/shrinker.c:382 shrink_slab_memcg mm/shrinker.c:548 [inline] shrink_slab+0x4f7/0x870 mm/shrinker.c:626 shrink_node_memcgs mm/vmscan.c:5875 [inline] shrink_node+0xab2/0x15a0 mm/vmscan.c:5908 shrink_zones mm/vmscan.c:6152 [inline] do_try_to_free_pages+0x3cc/0xca0 mm/vmscan.c:6214 try_to_free_mem_cgroup_pages+0x1eb/0x4e0 mm/vmscan.c:6529 try_charge_memcg+0x279/0xd10 mm/memcontrol.c:2783 try_charge mm/memcontrol.c:2931 [inline] charge_memcg mm/memcontrol.c:7284 [inline] mem_cgroup_swapin_charge_folio+0x107/0x1a0 mm/memcontrol.c:7369 __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+0x3bb/0x15f0 mm/memory.c:4048 handle_pte_fault mm/memory.c:5303 [inline] __handle_mm_fault mm/memory.c:5441 [inline] handle_mm_fault+0x7fa/0x27e0 mm/memory.c:5606 do_user_addr_fault arch/x86/mm/fault.c:1362 [inline] handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x3eb/0x6d0 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 value changed: 0x00000000ffffed61 -> 0x00000000ffffed62 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 11938 Comm: syz-executor.0 Not tainted 6.9.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 ================================================================== syz-executor.0 invoked oom-killer: gfp_mask=0x100cca(GFP_HIGHUSER_MOVABLE), order=0, oom_score_adj=0 CPU: 0 PID: 11938 Comm: syz-executor.0 Not tainted 6.9.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xf2/0x150 lib/dump_stack.c:114 dump_stack+0x15/0x20 lib/dump_stack.c:123 dump_header+0x83/0x2d0 mm/oom_kill.c:462 oom_kill_process+0x33e/0x4c0 mm/oom_kill.c:1036 out_of_memory+0x9cb/0xc00 mm/oom_kill.c:1174 mem_cgroup_out_of_memory+0x13e/0x190 mm/memcontrol.c:1817 mem_cgroup_oom mm/memcontrol.c:2047 [inline] try_charge_memcg+0x752/0xd10 mm/memcontrol.c:2831 try_charge mm/memcontrol.c:2931 [inline] charge_memcg mm/memcontrol.c:7284 [inline] mem_cgroup_swapin_charge_folio+0x107/0x1a0 mm/memcontrol.c:7369 __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+0x3bb/0x15f0 mm/memory.c:4048 handle_pte_fault mm/memory.c:5303 [inline] __handle_mm_fault mm/memory.c:5441 [inline] handle_mm_fault+0x7fa/0x27e0 mm/memory.c:5606 do_user_addr_fault arch/x86/mm/fault.c:1362 [inline] handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x3eb/0x6d0 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0033:0x7f1df2c58275 Code: 00 00 0f 1f 00 83 ff 03 74 7b 83 ff 02 b8 fa ff ff ff 49 89 ca 0f 44 f8 80 3d 8e 6c 0d 00 00 74 14 b8 e6 00 00 00 0f 05 f7 d8 66 2e 0f 1f 84 00 00 00 00 00 48 83 ec 28 48 89 54 24 10 89 74 RSP: 002b:00007fff834b8708 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00000000000002ca RCX: 00007f1df2c58273 RDX: 00007fff834b8720 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fff834b87ac R08: 0000000000000010 R09: 00007f1df2d390b0 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000032 R13: 000000000003d194 R14: 000000000003d16b R15: 0000000000000001 memory: usage 307200kB, limit 307200kB, failcnt 19324 memory+swap: usage 307668kB, limit 9007199254740988kB, failcnt 0 kmem: usage 307148kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz0: cache 53248 rss 0 shmem 36864 mapped_file 0 dirty 0 writeback 0 workingset_refault_anon 127 workingset_refault_file 8 swap 479232 swapcached 0 pgpgin 94141 pgpgout 94128 pgfault 143987 pgmajfault 72 inactive_anon 0 active_anon 0 inactive_file 12288 active_file 4096 unevictable 36864 hierarchical_memory_limit 314572800 hierarchical_memsw_limit 9223372036854771712 total_cache 53248 total_rss 0 total_shmem 36864 total_mapped_file 0 total_dirty 0 total_writeback 0 total_workingset_refault_anon 127 total_workingset_refault_file 8 total_swap 479232 total_swapcached 0 total_pgpgin 94141 total_pgpgout 94128 total_pgfault 143987 total_pgmajfault 72 total_inactive_anon 0 total_active_anon 0 total_inactive_file 12288 total_active_file 4096 total_unevictable 36864 oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=syz0,mems_allowed=0,oom_memcg=/syz0,task_memcg=/syz0,task=syz-executor.0,pid=16833,uid=0 Memory cgroup out of memory: Killed process 16833 (syz-executor.0) total-vm:48392kB, anon-rss:508kB, file-rss:8832kB, shmem-rss:0kB, UID:0 pgtables:84kB oom_score_adj:1000 EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000.