BUG: MAX_LOCKDEP_ENTRIES too low! turning off the locking correctness validator. CPU: 0 PID: 11294 Comm: syz-executor039 Not tainted 5.7.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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_bh include/linux/spinlock_api_smp.h:135 [inline] _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:175 spin_lock_bh include/linux/spinlock.h:358 [inline] batadv_tt_local_event+0x1f6/0x7e0 net/batman-adv/translation-table.c:488 batadv_tt_local_add+0x577/0x21e0 net/batman-adv/translation-table.c:764 batadv_interface_tx+0x5ba/0x1620 net/batman-adv/soft-interface.c:248 __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+0x25e1/0x30a0 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+0x2115/0x30a0 net/core/dev.c:4021 neigh_resolve_output net/core/neighbour.c:1489 [inline] neigh_resolve_output+0x566/0x930 net/core/neighbour.c:1469 neigh_output include/net/neighbour.h:510 [inline] ip6_finish_output2+0x1091/0x25b0 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:arch_local_irq_restore arch/x86/include/asm/paravirt.h:759 [inline] RIP: 0010:console_unlock+0xba3/0xf00 kernel/printk/printk.c:2506 Code: 89 48 c1 e8 03 42 80 3c 38 00 0f 85 36 03 00 00 48 83 3d ff 3d 38 08 00 0f 84 8e 01 00 00 e8 74 ac 16 00 48 8b 7c 24 28 57 9d <0f> 1f 44 00 00 eb 88 e8 61 ac 16 00 c7 05 57 ce 09 0b 00 00 00 00 RSP: 0018:ffffc90008616d20 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff888092218500 RBX: 0000000000000200 RCX: 1ffffffff185d03d RDX: 0000000000000000 RSI: ffffffff815c822c RDI: 0000000000000293 RBP: 0000000000000000 R08: 0000000000000001 R09: fffffbfff185cf3d R10: ffffffff8c2e79e7 R11: fffffbfff185cf3c R12: ffffffff84b311d0 R13: ffffffff8a1805f0 R14: 000000000000004e R15: dffffc0000000000 vprintk_emit+0x2c4/0x730 kernel/printk/printk.c:2021 vprintk_func+0x79/0x17e kernel/printk/printk_safe.c:385 printk+0xba/0xed kernel/printk/printk.c:2081 vlan_device_event.cold+0x19/0x2d net/8021q/vlan.c:384 notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 call_netdevice_notifiers_info net/core/dev.c:1948 [inline] call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1933 call_netdevice_notifiers_extack net/core/dev.c:1960 [inline] call_netdevice_notifiers net/core/dev.c:1974 [inline] __dev_notify_flags+0x121/0x2c0 net/core/dev.c:8182 rtnl_configure_link+0x169/0x250 net/core/rtnetlink.c:3025 __rtnl_newlink+0xf3f/0x1590 net/core/rtnetlink.c:3351 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3391 rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5454 netlink_rcv_skb+0x15a/0x410 net/netlink/af_netlink.c:2469 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline] netlink_unicast+0x537/0x740 net/netlink/af_netlink.c:1329 netlink_sendmsg+0x882/0xe10 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:672 ____sys_sendmsg+0x6bf/0x7e0 net/socket.c:2362 ___sys_sendmsg+0x100/0x170 net/socket.c:2416 __sys_sendmsg+0xec/0x1b0 net/socket.c:2449 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x443e29 Code: e8 2c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 8b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fff62130ec8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443e29 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000004 RBP: 000000000001880c R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000404cd0 R14: 0000000000000000 R15: 0000000000000000 neighbour: ndisc_cache: neighbor table overflow! neighbour: ndisc_cache: neighbor table overflow! neighbour: ndisc_cache: neighbor table overflow! neighbour: ndisc_cache: neighbor table overflow! neighbour: ndisc_cache: neighbor table overflow! neighbour: ndisc_cache: neighbor table overflow!