oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=syz3,mems_allowed=0,oom_memcg=/syz3,task_memcg=/syz3,task=syz-executor.3,pid=8664,uid=0 Memory cgroup out of memory: Killed process 8667 (syz-executor.3) total-vm:47884kB, anon-rss:384kB, file-rss:8952kB, shmem-rss:0kB, UID:0 pgtables:80kB oom_score_adj:1000 ================================================================== 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 0: 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 __sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:203 __refcount_add_not_zero include/linux/refcount.h:152 [inline] __refcount_inc_not_zero include/linux/refcount.h:218 [inline] refcount_inc_not_zero include/linux/refcount.h:236 [inline] shrinker_try_get include/linux/shrinker.h:141 [inline] shrink_slab_memcg mm/shrinker.c:536 [inline] shrink_slab+0x4b4/0x870 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 read to 0xffffffff860079c0 of 8 bytes by task 19025 on cpu 1: 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:1413 [inline] handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x2f5/0x6d0 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 __get_user_8+0x11/0x20 arch/x86/lib/getuser.S:85 rseq_get_rseq_cs kernel/rseq.c:161 [inline] rseq_ip_fixup kernel/rseq.c:281 [inline] __rseq_handle_notify_resume+0xc8/0xc00 kernel/rseq.c:329 rseq_handle_notify_resume include/linux/rseq.h:38 [inline] resume_user_mode_work include/linux/resume_user_mode.h:62 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x90/0x130 kernel/entry/common.c:218 do_syscall_64+0xda/0x1d0 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x00000001000162d5 -> 0x00000001000162d6 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 19025 Comm: syz-executor.3 Tainted: G W 6.9.0-rc4-syzkaller-00266-g977b1ef51866 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 ==================================================================