BUG: MAX_LOCKDEP_ENTRIES too low! turning off the locking correctness validator. CPU: 1 PID: 3167 Comm: kworker/1:191 Not tainted 5.7.0-rc1-next-20200415-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_power_efficient wg_ratelimiter_gc_entries Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x188/0x20d lib/dump_stack.c:118 alloc_list_entry.cold+0x11/0x18 kernel/locking/lockdep.c:1329 add_lock_to_list kernel/locking/lockdep.c:1350 [inline] check_prev_add kernel/locking/lockdep.c:2567 [inline] check_prevs_add kernel/locking/lockdep.c:2620 [inline] validate_chain kernel/locking/lockdep.c:3237 [inline] __lock_acquire+0x2f26/0x4c50 kernel/locking/lockdep.c:4355 lock_acquire+0x1f2/0x8f0 kernel/locking/lockdep.c:4934 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:353 [inline] cache_grow_end+0x46/0x170 mm/slab.c:2661 cache_alloc_refill mm/slab.c:2981 [inline] ____cache_alloc mm/slab.c:3055 [inline] ____cache_alloc mm/slab.c:3038 [inline] slab_alloc_node mm/slab.c:3250 [inline] kmem_cache_alloc_node_trace+0x747/0x790 mm/slab.c:3593 __do_kmalloc_node mm/slab.c:3615 [inline] __kmalloc_node_track_caller+0x38/0x60 mm/slab.c:3630 __kmalloc_reserve.isra.0+0x39/0xe0 net/core/skbuff.c:142 pskb_expand_head+0x148/0x1020 net/core/skbuff.c:1627 __skb_cow include/linux/skbuff.h:3171 [inline] skb_cow_head include/linux/skbuff.h:3205 [inline] batadv_skb_head_push+0x101/0x290 net/batman-adv/soft-interface.c:74 batadv_interface_tx+0xf42/0x1630 net/batman-adv/soft-interface.c:329 __netdev_start_xmit include/linux/netdevice.h:4533 [inline] netdev_start_xmit include/linux/netdevice.h:4547 [inline] xmit_one net/core/dev.c:3477 [inline] dev_hard_start_xmit+0x1a4/0x9b0 net/core/dev.c:3493 __dev_queue_xmit+0x259c/0x3070 net/core/dev.c:4052 macvlan_queue_xmit drivers/net/macvlan.c:537 [inline] macvlan_start_xmit+0x19d/0x7dd drivers/net/macvlan.c:562 __netdev_start_xmit include/linux/netdevice.h:4533 [inline] netdev_start_xmit include/linux/netdevice.h:4547 [inline] xmit_one net/core/dev.c:3477 [inline] dev_hard_start_xmit+0x1a4/0x9b0 net/core/dev.c:3493 sch_direct_xmit+0x345/0xc20 net/sched/sch_generic.c:313 qdisc_restart net/sched/sch_generic.c:376 [inline] __qdisc_run+0x4d1/0x17b0 net/sched/sch_generic.c:384 qdisc_run include/net/pkt_sched.h:134 [inline] qdisc_run include/net/pkt_sched.h:126 [inline] __dev_xmit_skb net/core/dev.c:3668 [inline] __dev_queue_xmit+0x2108/0x3070 net/core/dev.c:4021 neigh_hh_output include/net/neighbour.h:499 [inline] neigh_output include/net/neighbour.h:508 [inline] ip6_finish_output2+0xfb5/0x25b0 net/ipv6/ip6_output.c:117 __ip6_finish_output+0x442/0xab0 net/ipv6/ip6_output.c:143 ip6_finish_output+0x34/0x1f0 net/ipv6/ip6_output.c:153 NF_HOOK_COND include/linux/netfilter.h:296 [inline] ip6_output+0x239/0x810 net/ipv6/ip6_output.c:176 dst_output include/net/dst.h:435 [inline] NF_HOOK include/linux/netfilter.h:307 [inline] NF_HOOK include/linux/netfilter.h:301 [inline] mld_sendpack+0x961/0xdf0 net/ipv6/mcast.c:1682 mld_send_cr net/ipv6/mcast.c:1978 [inline] mld_ifc_timer_expire+0x42e/0x920 net/ipv6/mcast.c:2477 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1405 expire_timers kernel/time/timer.c:1450 [inline] __run_timers kernel/time/timer.c:1774 [inline] __run_timers kernel/time/timer.c:1741 [inline] run_timer_softirq+0x623/0x1600 kernel/time/timer.c:1787 __do_softirq+0x26c/0x9f7 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x192/0x1d0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:546 [inline] smp_apic_timer_interrupt+0x19e/0x600 arch/x86/kernel/apic/apic.c:1140 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:wg_ratelimiter_gc_entries+0x654/0x820 drivers/net/wireguard/ratelimiter.c:70 Code: e9 c7 fe ff ff e8 fc 3e c2 fc 48 8b 5c 24 10 48 03 1d 40 52 6b 08 48 89 d8 48 c1 e8 03 80 3c 28 00 0f 85 eb 00 00 00 48 8b 1b <48> 85 db 0f 84 7c fe ff ff e8 ce 3e c2 fc 48 83 eb 60 0f 85 8b fb RSP: 0018:ffffc90009ac7cd0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 1ffff110118fc348 RBX: 0000000000000000 RCX: ffffffff815a8019 RDX: 0000000000000000 RSI: ffffffff84b0f594 RDI: 0000000000000348 RBP: dffffc0000000000 R08: 0000000000000004 R09: fffff52001358f8d R10: 0000000000000003 R11: fffff52001358f8c R12: 0000000000000080 R13: 000000187629c8bc R14: dead000000000122 R15: 0000000000000348 process_one_work+0x965/0x16a0 kernel/workqueue.c:2268 worker_thread+0x96/0xe20 kernel/workqueue.c:2414 kthread+0x388/0x470 kernel/kthread.c:268 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352