================================================================== BUG: KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64 read-write to 0xffffffff866079c0 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 native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline] arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline] acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:111 acpi_idle_do_entry+0x1d/0x30 drivers/acpi/processor_idle.c:568 acpi_idle_enter+0x96/0xb0 drivers/acpi/processor_idle.c:702 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:230 [inline] do_idle+0x195/0x230 kernel/sched/idle.c:326 cpu_startup_entry+0x25/0x30 kernel/sched/idle.c:424 start_secondary+0x94/0xa0 arch/x86/kernel/smpboot.c:313 common_startup_64+0x12c/0x137 read to 0xffffffff866079c0 of 8 bytes by task 4305 on cpu 0: mem_cgroup_flush_stats_ratelimited+0x29/0x100 mm/memcontrol.c:605 count_shadow_nodes+0x6b/0x230 mm/workingset.c:693 do_shrink_slab+0x5a/0x680 mm/shrinker.c:382 shrink_slab_memcg mm/shrinker.c:548 [inline] shrink_slab+0x4ea/0x850 mm/shrinker.c:626 shrink_node_memcgs mm/vmscan.c:5910 [inline] shrink_node+0x64f/0x1d40 mm/vmscan.c:5948 shrink_zones mm/vmscan.c:6192 [inline] do_try_to_free_pages+0x3c6/0xc50 mm/vmscan.c:6254 try_to_free_mem_cgroup_pages+0x1f3/0x4f0 mm/vmscan.c:6586 try_charge_memcg+0x2bc/0x810 mm/memcontrol.c:2210 obj_cgroup_charge_pages+0xbd/0x1a0 mm/memcontrol.c:2660 __memcg_kmem_charge_page+0x9d/0x170 mm/memcontrol.c:2687 __alloc_pages_noprof+0x1bc/0x360 mm/page_alloc.c:4712 alloc_pages_mpol_noprof+0xb1/0x1e0 mm/mempolicy.c:2263 alloc_pages_noprof+0xe1/0x100 mm/mempolicy.c:2343 vm_area_alloc_pages mm/vmalloc.c:3584 [inline] __vmalloc_area_node mm/vmalloc.c:3653 [inline] __vmalloc_node_range_noprof+0x736/0xec0 mm/vmalloc.c:3834 __kvmalloc_node_noprof+0x121/0x170 mm/util.c:675 ip_set_alloc+0x1f/0x30 net/netfilter/ipset/ip_set_core.c:256 hash_netiface_create+0x273/0x730 net/netfilter/ipset/ip_set_hash_gen.h:1568 ip_set_create+0x359/0x8a0 net/netfilter/ipset/ip_set_core.c:1104 nfnetlink_rcv_msg+0x4a9/0x570 net/netfilter/nfnetlink.c:302 netlink_rcv_skb+0x12c/0x230 net/netlink/af_netlink.c:2550 nfnetlink_rcv+0x16c/0x15e0 net/netfilter/nfnetlink.c:667 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x599/0x670 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x5cc/0x6e0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x140/0x180 net/socket.c:745 ____sys_sendmsg+0x312/0x410 net/socket.c:2597 ___sys_sendmsg net/socket.c:2651 [inline] __sys_sendmsg+0x1e9/0x280 net/socket.c:2680 __do_sys_sendmsg net/socket.c:2689 [inline] __se_sys_sendmsg net/socket.c:2687 [inline] __x64_sys_sendmsg+0x46/0x50 net/socket.c:2687 x64_sys_call+0x2689/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:47 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 value changed: 0x00000000ffffa905 -> 0x00000000ffffa906 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 4305 Comm: syz.2.273 Not tainted 6.11.0-rc5-syzkaller-00219-g1934261d8974 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 ================================================================== syz.2.273 invoked oom-killer: gfp_mask=0x402dc2(GFP_KERNEL_ACCOUNT|__GFP_HIGHMEM|__GFP_NOWARN|__GFP_ZERO), order=0, oom_score_adj=1000 CPU: 0 UID: 0 PID: 4305 Comm: syz.2.273 Not tainted 6.11.0-rc5-syzkaller-00219-g1934261d8974 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0xf2/0x150 lib/dump_stack.c:119 dump_stack+0x15/0x20 lib/dump_stack.c:128 dump_header+0x83/0x2d0 mm/oom_kill.c:462 oom_kill_process+0x341/0x4c0 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:1602 mem_cgroup_oom mm/memcontrol.c:1625 [inline] try_charge_memcg+0x51b/0x810 mm/memcontrol.c:2258 obj_cgroup_charge_pages+0xbd/0x1a0 mm/memcontrol.c:2660 __memcg_kmem_charge_page+0x9d/0x170 mm/memcontrol.c:2687 __alloc_pages_noprof+0x1bc/0x360 mm/page_alloc.c:4712 alloc_pages_mpol_noprof+0xb1/0x1e0 mm/mempolicy.c:2263 alloc_pages_noprof+0xe1/0x100 mm/mempolicy.c:2343 vm_area_alloc_pages mm/vmalloc.c:3584 [inline] __vmalloc_area_node mm/vmalloc.c:3653 [inline] __vmalloc_node_range_noprof+0x736/0xec0 mm/vmalloc.c:3834 __kvmalloc_node_noprof+0x121/0x170 mm/util.c:675 ip_set_alloc+0x1f/0x30 net/netfilter/ipset/ip_set_core.c:256 hash_netiface_create+0x273/0x730 net/netfilter/ipset/ip_set_hash_gen.h:1568 ip_set_create+0x359/0x8a0 net/netfilter/ipset/ip_set_core.c:1104 nfnetlink_rcv_msg+0x4a9/0x570 net/netfilter/nfnetlink.c:302 netlink_rcv_skb+0x12c/0x230 net/netlink/af_netlink.c:2550 nfnetlink_rcv+0x16c/0x15e0 net/netfilter/nfnetlink.c:667 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x599/0x670 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x5cc/0x6e0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x140/0x180 net/socket.c:745 ____sys_sendmsg+0x312/0x410 net/socket.c:2597 ___sys_sendmsg net/socket.c:2651 [inline] __sys_sendmsg+0x1e9/0x280 net/socket.c:2680 __do_sys_sendmsg net/socket.c:2689 [inline] __se_sys_sendmsg net/socket.c:2687 [inline] __x64_sys_sendmsg+0x46/0x50 net/socket.c:2687 x64_sys_call+0x2689/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:47 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 RIP: 0033:0x7f66b02f9eb9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f66aef56038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f66b0496058 RCX: 00007f66b02f9eb9 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 000000000000000b RBP: 00007f66b036793e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f66b0496058 R15: 00007ffc7c62a7f8 memory: usage 307200kB, limit 307200kB, failcnt 111 memory+swap: usage 307592kB, limit 9007199254740988kB, failcnt 0 kmem: usage 307076kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz2: cache 122880 rss 4096 shmem 0 mapped_file 122880 dirty 122880 writeback 0 workingset_refault_anon 50 workingset_refault_file 0 swap 401408 swapcached 4096 pgpgin 3429 pgpgout 3398 pgfault 7542 pgmajfault 45 inactive_anon 4096 active_anon 0 inactive_file 122880 active_file 0 unevictable 0 hierarchical_memory_limit 314572800 hierarchical_memsw_limit 9223372036854771712 total_cache 122880 total_rss 4096 total_shmem 0 total_mapped_file 122880 total_dirty 122880 total_writeback 0 total_workingset_refault_anon 50 total_workingset_refault_file 0 total_swap 401408 total_swapcached 4096 total_pgpgin 3429 total_pgpgout 3398 total_pgfault 7542 total_pgmajfault 45 total_inactive_anon 4096 total_active_anon 0 total_inactive_file 122880 total_active_file 0 total_unevictable 0 oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=syz2,mems_allowed=0,oom_memcg=/syz2,task_memcg=/syz2,task=syz.2.273,pid=4303,uid=0 Memory cgroup out of memory: Killed process 4303 (syz.2.273) total-vm:87120kB, anon-rss:520kB, file-rss:16104kB, shmem-rss:0kB, UID:0 pgtables:112kB oom_score_adj:1000 syz.2.273 (4305) used greatest stack depth: 7384 bytes left