oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=syz1,mems_allowed=0,oom_memcg=/syz1,task_memcg=/syz1,task=syz-executor.1,pid=6270,uid=0 Memory cgroup out of memory: Killed process 6273 (syz-executor.1) total-vm:48480kB, anon-rss:508kB, file-rss:8960kB, shmem-rss:0kB, UID:0 pgtables:80kB oom_score_adj:1000 ================================================================== BUG: KCSAN: data-race in mem_cgroup_flush_stats / tick_do_update_jiffies64 read-write to 0xffffffff85a079c0 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:210 [inline] tick_sched_timer+0x7b/0x2c0 kernel/time/tick-sched.c:1485 __run_hrtimer kernel/time/hrtimer.c:1688 [inline] __hrtimer_run_queues+0x217/0x700 kernel/time/hrtimer.c:1752 hrtimer_interrupt+0x20d/0x7b0 kernel/time/hrtimer.c:1814 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1063 [inline] __sysvec_apic_timer_interrupt+0x52/0x190 arch/x86/kernel/apic/apic.c:1080 sysvec_apic_timer_interrupt+0x68/0x80 arch/x86/kernel/apic/apic.c:1074 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 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+0x20/0x30 drivers/acpi/processor_idle.c:112 acpi_idle_do_entry+0x19/0x30 drivers/acpi/processor_idle.c:573 acpi_idle_enter+0x96/0xb0 drivers/acpi/processor_idle.c:707 cpuidle_enter_state+0xc6/0x260 drivers/cpuidle/cpuidle.c:267 cpuidle_enter+0x40/0x60 drivers/cpuidle/cpuidle.c:388 call_cpuidle kernel/sched/idle.c:134 [inline] cpuidle_idle_call kernel/sched/idle.c:215 [inline] do_idle+0x194/0x230 kernel/sched/idle.c:282 cpu_startup_entry+0x24/0x30 kernel/sched/idle.c:380 rest_init+0xf3/0x100 init/main.c:726 arch_call_rest_init+0x9/0x10 init/main.c:823 start_kernel+0x57d/0x5d0 init/main.c:1068 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:556 x86_64_start_kernel+0x94/0xa0 arch/x86/kernel/head64.c:537 secondary_startup_64_no_verify+0x167/0x16b read to 0xffffffff85a079c0 of 8 bytes by task 608 on cpu 1: do_flush_stats mm/memcontrol.c:653 [inline] mem_cgroup_flush_stats+0x5d/0xd0 mm/memcontrol.c:664 count_shadow_nodes+0x67/0x3d0 mm/workingset.c:667 do_shrink_slab+0x56/0x640 mm/vmscan.c:847 shrink_slab_memcg mm/vmscan.c:969 [inline] shrink_slab+0x2c1/0x550 mm/vmscan.c:1048 shrink_node_memcgs mm/vmscan.c:6507 [inline] shrink_node+0xaf2/0x15c0 mm/vmscan.c:6540 shrink_zones mm/vmscan.c:6779 [inline] do_try_to_free_pages+0x43d/0xce0 mm/vmscan.c:6841 try_to_free_mem_cgroup_pages+0x1e2/0x480 mm/vmscan.c:7156 try_charge_memcg+0x280/0xd30 mm/memcontrol.c:2691 try_charge mm/memcontrol.c:2833 [inline] charge_memcg+0x51/0x200 mm/memcontrol.c:6996 mem_cgroup_swapin_charge_folio+0xd0/0x150 mm/memcontrol.c:7052 __read_swap_cache_async+0x339/0x590 mm/swap_state.c:488 swap_cluster_readahead+0x29d/0x4e0 mm/swap_state.c:650 swapin_readahead+0x8d/0x710 mm/swap_state.c:858 do_swap_page+0x306/0x1780 mm/memory.c:3822 handle_pte_fault mm/memory.c:4981 [inline] __handle_mm_fault mm/memory.c:5119 [inline] handle_mm_fault+0xa2e/0x2cc0 mm/memory.c:5284 do_user_addr_fault arch/x86/mm/fault.c:1364 [inline] handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x3ff/0x6c0 arch/x86/mm/fault.c:1561 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 value changed: 0x000000010000c94d -> 0x000000010000c94e Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 608 Comm: syz-executor.1 Not tainted 6.6.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 ================================================================== syz-executor.1 invoked oom-killer: gfp_mask=0x100cca(GFP_HIGHUSER_MOVABLE), order=0, oom_score_adj=1000 CPU: 1 PID: 608 Comm: syz-executor.1 Not tainted 6.6.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xda/0x130 lib/dump_stack.c:106 dump_stack+0x15/0x20 lib/dump_stack.c:113 dump_header+0x95/0x3c0 mm/oom_kill.c:460 oom_kill_process+0xe3/0x3e0 mm/oom_kill.c:1033 out_of_memory+0x9ca/0xc00 mm/oom_kill.c:1169 mem_cgroup_out_of_memory+0x139/0x190 mm/memcontrol.c:1740 mem_cgroup_oom mm/memcontrol.c:1970 [inline] try_charge_memcg+0x75c/0xd30 mm/memcontrol.c:2739 try_charge mm/memcontrol.c:2833 [inline] charge_memcg+0x51/0x200 mm/memcontrol.c:6996 mem_cgroup_swapin_charge_folio+0xd0/0x150 mm/memcontrol.c:7052 __read_swap_cache_async+0x339/0x590 mm/swap_state.c:488 swap_cluster_readahead+0x29d/0x4e0 mm/swap_state.c:650 swapin_readahead+0x8d/0x710 mm/swap_state.c:858 do_swap_page+0x306/0x1780 mm/memory.c:3822 handle_pte_fault mm/memory.c:4981 [inline] __handle_mm_fault mm/memory.c:5119 [inline] handle_mm_fault+0xa2e/0x2cc0 mm/memory.c:5284 do_user_addr_fault arch/x86/mm/fault.c:1364 [inline] handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x3ff/0x6c0 arch/x86/mm/fault.c:1561 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0033:0x7f4f37a71ae4 Code: 01 00 00 69 3d c9 eb c8 00 e8 03 00 00 48 8d 1d b2 54 16 00 e8 9d 5f 04 00 eb 0f 0f 1f 00 48 81 c3 d0 00 00 00 48 39 eb 74 be <80> 7b 20 00 74 ee 8b 43 0c 85 c0 74 e7 48 89 df e8 f7 ee ff ff eb RSP: 002b:00007fffe4db5590 EFLAGS: 00010206 RAX: 0000000000000000 RBX: 00007f4f37bd6f80 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000555557274788 RBP: 00007f4f37bd8980 R08: 0000000000000000 R09: 00007fffe4dd40b0 R10: 0000000000000000 R11: 0000000000000293 R12: 00000000000c6f40 R13: ffffffffffffffff R14: 00007f4f3763b000 R15: 00000000000c6bff memory: usage 307200kB, limit 307200kB, failcnt 9520 memory+swap: usage 309432kB, limit 9007199254740988kB, failcnt 0 kmem: usage 307148kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz1: cache 32768 rss 8192 shmem 0 mapped_file 0 dirty 16384 writeback 8192 workingset_refault_anon 9 workingset_refault_file 0 swap 2285568 pgpgin 324337 pgpgout 324324 pgfault 373109 pgmajfault 8 inactive_anon 12288 active_anon 0 inactive_file 24576 active_file 8192 unevictable 0 hierarchical_memory_limit 314572800 hierarchical_memsw_limit 9223372036854771712 total_cache 32768 total_rss 8192 total_shmem 0 total_mapped_file 0 total_dirty 16384 total_writeback 8192 total_workingset_refault_anon 9 total_workingset_refault_file 0 total_swap 2285568 total_pgpgin 324337 total_pgpgout 324324 total_pgfault 373109 total_pgmajfault 8 total_inactive_anon 12288 total_active_anon 0 total_inactive_file 24576 total_active_file 8192 total_unevictable 0 oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=syz1,mems_allowed=0,oom_memcg=/syz1,task_memcg=/syz1,task=syz-executor.1,pid=6492,uid=0 Memory cgroup out of memory: Killed process 6493 (syz-executor.1) total-vm:48480kB, anon-rss:464kB, file-rss:8960kB, shmem-rss:0kB, UID:0 pgtables:84kB oom_score_adj:1000