BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3855 [inline]
 validate_chain kernel/locking/lockdep.c:3876 [inline]
 __lock_acquire+0xfdc/0x2ebc kernel/locking/lockdep.c:5237
 lock_acquire+0x140/0x364 kernel/locking/lockdep.c:5868
 __raw_spin_lock include/linux/spinlock_api_smp.h:158 [inline]
 _raw_spin_lock+0x48/0x60 kernel/locking/spinlock.c:158
 spin_lock include/linux/spinlock.h:342 [inline]
 __dev_xmit_skb net/core/dev.c:4247 [inline]
 __dev_queue_xmit+0xa6c/0x2ba4 net/core/dev.c:4831
 dev_queue_xmit include/linux/netdevice.h:3418 [inline]
 neigh_resolve_output+0x568/0x668 net/core/neighbour.c:1619
 neigh_output include/net/neighbour.h:560 [inline]
 ip6_finish_output2+0xd04/0x1ab4 net/ipv6/ip6_output.c:136
 __ip6_finish_output net/ipv6/ip6_output.c:-1 [inline]
 ip6_finish_output+0x230/0x618 net/ipv6/ip6_output.c:219
 NF_HOOK_COND include/linux/netfilter.h:307 [inline]
 ip6_output+0x2d0/0x644 net/ipv6/ip6_output.c:246
 dst_output include/net/dst.h:470 [inline]
 NF_HOOK include/linux/netfilter.h:318 [inline]
 ndisc_send_skb+0xbec/0x1628 net/ipv6/ndisc.c:512
 ndisc_send_ns+0xd8/0x168 net/ipv6/ndisc.c:671
 ndisc_solicit+0x2b0/0x40c net/ipv6/ndisc.c:-1
 neigh_probe+0xc4/0x124 net/core/neighbour.c:1096
 __neigh_event_send+0xb48/0x137c net/core/neighbour.c:1276
 neigh_event_send_probe include/net/neighbour.h:480 [inline]
 neigh_event_send include/net/neighbour.h:486 [inline]
 neigh_resolve_output+0x184/0x668 net/core/neighbour.c:1603
 neigh_output include/net/neighbour.h:560 [inline]
 ip6_finish_output2+0xd04/0x1ab4 net/ipv6/ip6_output.c:136
 __ip6_finish_output net/ipv6/ip6_output.c:-1 [inline]
 ip6_finish_output+0x230/0x618 net/ipv6/ip6_output.c:219
 NF_HOOK_COND include/linux/netfilter.h:307 [inline]
 ip6_output+0x2d0/0x644 net/ipv6/ip6_output.c:246
 dst_output include/net/dst.h:470 [inline]
 ip6_local_out+0x110/0x148 net/ipv6/output_core.c:129
 ip6tunnel_xmit include/net/ip6_tunnel.h:174 [inline]
 udp_tunnel6_xmit_skb+0x5f8/0xe34 net/ipv6/ip6_udp_tunnel.c:112
 geneve6_xmit_skb drivers/net/geneve.c:1483 [inline]
 geneve_xmit+0x19a0/0x2954 drivers/net/geneve.c:1514
 __netdev_start_xmit include/linux/netdevice.h:5368 [inline]
 netdev_start_xmit include/linux/netdevice.h:5377 [inline]
 xmit_one net/core/dev.c:3888 [inline]
 dev_hard_start_xmit+0x1dc/0x9d4 net/core/dev.c:3904
 __dev_queue_xmit+0xeb8/0x2ba4 net/core/dev.c:4870
 dev_queue_xmit include/linux/netdevice.h:3418 [inline]
 neigh_resolve_output+0x568/0x668 net/core/neighbour.c:1619
 neigh_output include/net/neighbour.h:560 [inline]
 ip6_finish_output2+0xd04/0x1ab4 net/ipv6/ip6_output.c:136
 __ip6_finish_output net/ipv6/ip6_output.c:-1 [inline]
 ip6_finish_output+0x230/0x618 net/ipv6/ip6_output.c:219
 NF_HOOK_COND include/linux/netfilter.h:307 [inline]
 ip6_output+0x2d0/0x644 net/ipv6/ip6_output.c:246
 dst_output include/net/dst.h:470 [inline]
 NF_HOOK include/linux/netfilter.h:318 [inline]
 ndisc_send_skb+0xbec/0x1628 net/ipv6/ndisc.c:512
 ndisc_send_rs+0x378/0x504 net/ipv6/ndisc.c:723
 addrconf_rs_timer+0x230/0x574 net/ipv6/addrconf.c:4049
 call_timer_fn+0x194/0xa4c kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1799 [inline]
 __run_timers kernel/time/timer.c:2374 [inline]
 __run_timer_base+0x530/0x744 kernel/time/timer.c:2386
 run_timer_base+0x84/0x1b8 kernel/time/timer.c:2395
 run_timer_softirq+0x20/0x48 kernel/time/timer.c:2405
 handle_softirqs+0x2ec/0xd98 kernel/softirq.c:622
 __do_softirq+0x14/0x20 kernel/softirq.c:656
 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:78
 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:889
 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:83
 invoke_softirq kernel/softirq.c:503 [inline]
 __irq_exit_rcu+0x1ac/0x428 kernel/softirq.c:735
 irq_exit_rcu+0x14/0x84 kernel/softirq.c:752
 __el1_irq arch/arm64/kernel/entry-common.c:510 [inline]
 el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:522
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:527
 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:590
 write_comp_data+0x4/0x84 kernel/kcov.c:240 (P)
 tick_nohz_idle_got_tick+0x30/0x11c kernel/time/tick-sched.c:1348
 do_idle+0x140/0x428 kernel/sched/idle.c:354
 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:451
 rest_init+0x324/0x33c init/main.c:762
 start_kernel+0x374/0x3c0 init/main.c:1220
 __primary_switched+0x8c/0x94 arch/arm64/kernel/head.S:246