oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=syz4,mems_allowed=0,oom_memcg=/syz4,task_memcg=/syz4,task=syz.4.9351,pid=31270,uid=0 Memory cgroup out of memory: Killed process 31272 (syz.4.9351) total-vm:80252kB, anon-rss:432kB, file-rss:12356kB, shmem-rss:0kB, UID:0 pgtables:92kB 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 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:1687 [inline] __hrtimer_run_queues+0x20d/0x5e0 kernel/time/hrtimer.c:1751 hrtimer_interrupt+0x210/0x7b0 kernel/time/hrtimer.c:1813 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 native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline] arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline] acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:112 acpi_idle_do_entry+0x1d/0x30 drivers/acpi/processor_idle.c:573 acpi_idle_enter+0x96/0xb0 drivers/acpi/processor_idle.c:707 cpuidle_enter_state+0xcf/0x270 drivers/cpuidle/cpuidle.c:267 cpuidle_enter+0x40/0x70 drivers/cpuidle/cpuidle.c:388 call_cpuidle kernel/sched/idle.c:155 [inline] cpuidle_idle_call kernel/sched/idle.c:236 [inline] do_idle+0x195/0x230 kernel/sched/idle.c:332 cpu_startup_entry+0x25/0x30 kernel/sched/idle.c:430 start_secondary+0x94/0xa0 arch/x86/kernel/smpboot.c:313 common_startup_64+0x12c/0x137 read to 0xffffffff860079c0 of 8 bytes by task 7255 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: 0x000000010001e48d -> 0x000000010001e48e Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 7255 Comm: syz-executor Tainted: G W 6.10.0-rc5-syzkaller-00253-gde0a9f448633 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 ================================================================== syz-executor invoked oom-killer: gfp_mask=0x100cca(GFP_HIGHUSER_MOVABLE), order=0, oom_score_adj=0 CPU: 0 PID: 7255 Comm: syz-executor Tainted: G W 6.10.0-rc5-syzkaller-00253-gde0a9f448633 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 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:1035 out_of_memory+0x9af/0xbe0 mm/oom_kill.c:1173 mem_cgroup_out_of_memory+0x13e/0x190 mm/memcontrol.c:1975 mem_cgroup_oom mm/memcontrol.c:2203 [inline] try_charge_memcg+0x745/0xcd0 mm/memcontrol.c:2992 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 RIP: 0033:0x7f440a858942 Code: d7 82 de 1b 43 48 f7 a4 24 b8 00 00 00 48 8b 05 64 ae de 00 48 69 8c 24 b0 00 00 00 e8 03 00 00 48 c1 ea 12 48 01 ca 8b 48 08 <39> 4c 24 0c 48 89 d0 4c 0f 45 ea 4c 29 f0 48 3b 05 49 ad de 00 73 RSP: 002b:00007ffd88c110d0 EFLAGS: 00010202 RAX: 0000001b31120000 RBX: 00000000000002eb RCX: 0000000000000015 RDX: 0000000000178140 RSI: 00007ffd88c11180 RDI: 0000000000000001 RBP: 00007ffd88c1111c R08: 0000000018cf1b70 R09: 7fffffffffffffff R10: 00007f440aae80b8 R11: 00007f440aae8080 R12: 0000000000000032 R13: 0000000000177ea2 R14: 0000000000177ab3 R15: 00007ffd88c11180 memory: usage 307200kB, limit 307200kB, failcnt 14980 memory+swap: usage 307788kB, limit 9007199254740988kB, failcnt 0 kmem: usage 307192kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz4: cache 8192 rss 0 shmem 0 mapped_file 3149824 dirty 0 writeback 0 workingset_refault_anon 1052 workingset_refault_file 4513 swap 602112 swapcached 0 pgpgin 907422 pgpgout 907420 pgfault 1017444 pgmajfault 734 inactive_anon 0 active_anon 0 inactive_file 4096 active_file 4096 unevictable 0 hierarchical_memory_limit 314572800 hierarchical_memsw_limit 9223372036854771712 total_cache 8192 total_rss 0 total_shmem 0 total_mapped_file 3149824 total_dirty 0 total_writeback 0 total_workingset_refault_anon 1052 total_workingset_refault_file 4513 total_swap 602112 total_swapcached 0 total_pgpgin 907422 total_pgpgout 907420 total_pgfault 1017444 total_pgmajfault 734 total_inactive_anon 0 total_active_anon 0 total_inactive_file 4096 total_active_file 4096 total_unevictable 0 oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=syz4,mems_allowed=0,oom_memcg=/syz4,task_memcg=/syz4,task=syz.4.13696,pid=11462,uid=0 Memory cgroup out of memory: Killed process 11462 (syz.4.13696) total-vm:80884kB, anon-rss:456kB, file-rss:10176kB, shmem-rss:128kB, UID:0 pgtables:120kB oom_score_adj:1000 EXT4-fs (loop4): unmounting filesystem 00000000-0000-0000-0000-000000000000.