netdevsim netdevsim1 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim1 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim1 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 1 UID: 0 PID: 774 Comm: kworker/u8:4 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 Workqueue: wg-kex-wg2 wg_packet_handshake_send_worker 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+0xf9c/0x30a4 kernel/locking/lockdep.c:5237 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5868 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162 ref_tracker_alloc+0x188/0x3dc lib/ref_tracker.c:280 __netdev_tracker_alloc include/linux/netdevice.h:4349 [inline] netdev_hold include/linux/netdevice.h:4378 [inline] dst_init+0xbc/0x3e4 net/core/dst.c:52 dst_alloc+0x118/0x168 net/core/dst.c:93 ip6_dst_alloc net/ipv6/route.c:342 [inline] ip6_rt_pcpu_alloc net/ipv6/route.c:1418 [inline] rt6_make_pcpu_route net/ipv6/route.c:1467 [inline] ip6_pol_route+0x8d8/0x1014 net/ipv6/route.c:2305 ip6_pol_route_output+0x60/0x94 net/ipv6/route.c:2651 pol_lookup_func include/net/ip6_fib.h:617 [inline] fib6_rule_lookup+0x174/0x45c net/ipv6/fib6_rules.c:120 ip6_route_output_flags_noref net/ipv6/route.c:2684 [inline] ip6_route_output_flags+0x2e4/0x578 net/ipv6/route.c:2696 ip6_route_output include/net/ip6_route.h:93 [inline] ip6_dst_lookup_tail+0x168/0x12e4 net/ipv6/ip6_output.c:1131 ip6_dst_lookup_flow+0x54/0xe0 net/ipv6/ip6_output.c:1262 send6+0x424/0x778 drivers/net/wireguard/socket.c:139 wg_socket_send_skb_to_peer+0xf8/0x1a4 drivers/net/wireguard/socket.c:178 wg_socket_send_buffer_to_peer+0x104/0x168 drivers/net/wireguard/socket.c:200 wg_packet_send_handshake_initiation drivers/net/wireguard/send.c:40 [inline] wg_packet_handshake_send_worker+0x1a4/0x2a0 drivers/net/wireguard/send.c:51 process_one_work+0x7e8/0x155c kernel/workqueue.c:3236 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844