================================================================== BUG: KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64 read-write to 0xffffffff866089c0 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:1739 [inline] __hrtimer_run_queues+0x20d/0x5e0 kernel/time/hrtimer.c:1803 hrtimer_interrupt+0x235/0x4a0 kernel/time/hrtimer.c:1865 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x5c/0x1d0 arch/x86/kernel/apic/apic.c:1055 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0x6e/0x80 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 orc_find arch/x86/kernel/unwind_orc.c:217 [inline] unwind_next_frame+0xbe/0xc80 arch/x86/kernel/unwind_orc.c:494 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x61/0x90 kernel/stacktrace.c:122 ref_tracker_alloc+0x10f/0x2f0 lib/ref_tracker.c:209 __netdev_tracker_alloc include/linux/netdevice.h:4136 [inline] netdev_hold+0x66/0xa0 include/linux/netdevice.h:4165 register_netdevice+0xbaa/0xe30 net/core/dev.c:10613 __ip_tunnel_create+0x1c5/0x270 net/ipv4/ip_tunnel.c:267 ip_tunnel_init_net+0x18a/0x3e0 net/ipv4/ip_tunnel.c:1160 erspan_init_net+0x35/0x40 net/ipv4/ip_gre.c:1756 ops_init+0x1c9/0x260 net/core/net_namespace.c:138 setup_net+0x14d/0x600 net/core/net_namespace.c:362 copy_net_ns+0x290/0x430 net/core/net_namespace.c:500 create_new_namespaces+0x228/0x430 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0xe6/0x120 kernel/nsproxy.c:228 ksys_unshare+0x3c9/0x6e0 kernel/fork.c:3334 __do_sys_unshare kernel/fork.c:3405 [inline] __se_sys_unshare kernel/fork.c:3403 [inline] __x64_sys_unshare+0x1f/0x30 kernel/fork.c:3403 x64_sys_call+0x1a3e/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:273 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 read to 0xffffffff866089c0 of 8 bytes by task 14949 on cpu 0: mem_cgroup_flush_stats_ratelimited+0x29/0x70 mm/memcontrol.c:640 count_shadow_nodes+0x6b/0x230 mm/workingset.c:683 do_shrink_slab+0x5a/0x680 mm/shrinker.c:384 shrink_slab_memcg mm/shrinker.c:550 [inline] shrink_slab+0x4ea/0x850 mm/shrinker.c:628 shrink_node_memcgs mm/vmscan.c:5931 [inline] shrink_node+0x63f/0x1d80 mm/vmscan.c:5970 shrink_zones mm/vmscan.c:6215 [inline] do_try_to_free_pages+0x3c6/0xc50 mm/vmscan.c:6277 try_to_free_mem_cgroup_pages+0x1e3/0x490 mm/vmscan.c:6609 try_charge_memcg+0x2bc/0x7f0 mm/memcontrol.c:2238 obj_cgroup_charge_pages+0xbd/0x1a0 mm/memcontrol.c:2646 __memcg_kmem_charge_page+0x9d/0x170 mm/memcontrol.c:2673 __alloc_pages_noprof+0x1bc/0x340 mm/page_alloc.c:4768 alloc_pages_mpol_noprof+0xb1/0x1e0 mm/mempolicy.c:2265 alloc_pages_noprof+0xe1/0x100 mm/mempolicy.c:2344 vm_area_alloc_pages mm/vmalloc.c:3589 [inline] __vmalloc_area_node mm/vmalloc.c:3667 [inline] __vmalloc_node_range_noprof+0x6eb/0xe80 mm/vmalloc.c:3844 __kvmalloc_node_noprof+0x121/0x170 mm/util.c:672 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:2542 nfnetlink_rcv+0x16c/0x15d0 net/netfilter/nfnetlink.c:667 netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline] netlink_unicast+0x599/0x670 net/netlink/af_netlink.c:1347 netlink_sendmsg+0x5cc/0x6e0 net/netlink/af_netlink.c:1891 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg+0x140/0x180 net/socket.c:726 ____sys_sendmsg+0x312/0x410 net/socket.c:2583 ___sys_sendmsg net/socket.c:2637 [inline] __sys_sendmsg+0x19d/0x230 net/socket.c:2669 __do_sys_sendmsg net/socket.c:2674 [inline] __se_sys_sendmsg net/socket.c:2672 [inline] __x64_sys_sendmsg+0x46/0x50 net/socket.c:2672 x64_sys_call+0x2734/0x2dc0 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: 0x000000010000adab -> 0x000000010000adac Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 14949 Comm: syz.2.15067 Not tainted 6.13.0-rc1-syzkaller-00005-gceb8bf2ceaa7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ================================================================== syz.2.15067 invoked oom-killer: gfp_mask=0x402dc2(GFP_KERNEL_ACCOUNT|__GFP_HIGHMEM|__GFP_NOWARN|__GFP_ZERO), order=0, oom_score_adj=1000 CPU: 1 UID: 0 PID: 14949 Comm: syz.2.15067 Not tainted 6.13.0-rc1-syzkaller-00005-gceb8bf2ceaa7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xf2/0x150 lib/dump_stack.c:120 dump_stack+0x15/0x1a lib/dump_stack.c:129 dump_header+0x83/0x2d0 mm/oom_kill.c:461 oom_kill_process+0x341/0x4c0 mm/oom_kill.c:1034 out_of_memory+0x9af/0xbe0 mm/oom_kill.c:1172 mem_cgroup_out_of_memory+0x13e/0x190 mm/memcontrol.c:1630 mem_cgroup_oom mm/memcontrol.c:1653 [inline] try_charge_memcg+0x508/0x7f0 mm/memcontrol.c:2280 obj_cgroup_charge_pages+0xbd/0x1a0 mm/memcontrol.c:2646 __memcg_kmem_charge_page+0x9d/0x170 mm/memcontrol.c:2673 __alloc_pages_noprof+0x1bc/0x340 mm/page_alloc.c:4768 alloc_pages_mpol_noprof+0xb1/0x1e0 mm/mempolicy.c:2265 alloc_pages_noprof+0xe1/0x100 mm/mempolicy.c:2344 vm_area_alloc_pages mm/vmalloc.c:3589 [inline] __vmalloc_area_node mm/vmalloc.c:3667 [inline] __vmalloc_node_range_noprof+0x6eb/0xe80 mm/vmalloc.c:3844 __kvmalloc_node_noprof+0x121/0x170 mm/util.c:672 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:2542 nfnetlink_rcv+0x16c/0x15d0 net/netfilter/nfnetlink.c:667 netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline] netlink_unicast+0x599/0x670 net/netlink/af_netlink.c:1347 netlink_sendmsg+0x5cc/0x6e0 net/netlink/af_netlink.c:1891 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg+0x140/0x180 net/socket.c:726 ____sys_sendmsg+0x312/0x410 net/socket.c:2583 ___sys_sendmsg net/socket.c:2637 [inline] __sys_sendmsg+0x19d/0x230 net/socket.c:2669 __do_sys_sendmsg net/socket.c:2674 [inline] __se_sys_sendmsg net/socket.c:2672 [inline] __x64_sys_sendmsg+0x46/0x50 net/socket.c:2672 x64_sys_call+0x2734/0x2dc0 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: 0033:0x7fd36173ff19 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:00007fd35fdb7058 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fd361905fa0 RCX: 00007fd36173ff19 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000007 RBP: 00007fd3617b3986 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fd361905fa0 R15: 00007ffd8e72af68 memory: usage 307180kB, limit 307200kB, failcnt 1067 memory+swap: usage 307348kB, limit 9007199254740988kB, failcnt 0 kmem: usage 307128kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz2: cache 0 rss 4096 shmem 0 mapped_file 0 dirty 0 writeback 4096 workingset_refault_anon 495 workingset_refault_file 429 swap 188416 swapcached 12288 pgpgin 749480 pgpgout 749470 pgfault 868582 pgmajfault 184 inactive_anon 0 active_anon 4096 inactive_file 0 active_file 0 unevictable 0 hierarchical_memory_limit 314572800 hierarchical_memsw_limit 9223372036854771712 total_cache 0 total_rss 4096 total_shmem 0 total_mapped_file 0 total_dirty 0 total_writeback 4096 total_workingset_refault_anon 495 total_workingset_refault_file 429 total_swap 188416 total_swapcached 12288 total_pgpgin 749480 total_pgpgout 749470 total_pgfault 868582 total_pgmajfault 184 total_inactive_anon 0 total_active_anon 4096 total_inactive_file 0 total_active_file 0 total_unevictable 0 oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0,oom_memcg=/syz2,task_memcg=/syz2,task=syz.2.15067,pid=14948,uid=0 Memory cgroup out of memory: Killed process 14949 (syz.2.15067) total-vm:93148kB, anon-rss:616kB, file-rss:22308kB, shmem-rss:0kB, UID:0 pgtables:120kB oom_score_adj:1000