BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 0 PID: 7581 Comm: kworker/0:0 Not tainted 5.8.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: wg-crypt-wg0 wg_packet_tx_worker Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x18f/0x20d lib/dump_stack.c:118 add_chain_cache kernel/locking/lockdep.c:3063 [inline] lookup_chain_cache_add kernel/locking/lockdep.c:3162 [inline] validate_chain kernel/locking/lockdep.c:3183 [inline] __lock_acquire.cold+0x11/0x3f8 kernel/locking/lockdep.c:4380 lock_acquire+0x1f1/0xad0 kernel/locking/lockdep.c:4959 __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] nf_ct_add_to_unconfirmed_list net/netfilter/nf_conntrack_core.c:520 [inline] init_conntrack.constprop.0+0xbb5/0x1060 net/netfilter/nf_conntrack_core.c:1645 resolve_normal_ct net/netfilter/nf_conntrack_core.c:1686 [inline] nf_conntrack_in+0x9b9/0x12a0 net/netfilter/nf_conntrack_core.c:1846 nf_hook_entry_hookfn include/linux/netfilter.h:135 [inline] nf_hook_slow+0xc5/0x1e0 net/netfilter/core.c:512 nf_hook include/linux/netfilter.h:262 [inline] __ip6_local_out+0x419/0x890 net/ipv6/output_core.c:167 ip6_local_out+0x26/0x1a0 net/ipv6/output_core.c:177 ip6tunnel_xmit include/net/ip6_tunnel.h:160 [inline] udp_tunnel6_xmit_skb+0x6a6/0xb90 net/ipv6/ip6_udp_tunnel.c:109 send6+0x4cd/0xbc0 drivers/net/wireguard/socket.c:152 wg_socket_send_skb_to_peer+0xf5/0x220 drivers/net/wireguard/socket.c:177 wg_packet_create_data_done drivers/net/wireguard/send.c:252 [inline] wg_packet_tx_worker+0x2f9/0x980 drivers/net/wireguard/send.c:280 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415 kthread+0x3b5/0x4a0 kernel/kthread.c:291 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293 usb 4-1: USB disconnect, device number 32 usb 1-1: new high-speed USB device number 50 using dummy_hcd usb 1-1: Using ep0 maxpacket: 8 usb 1-1: New USB device found, idVendor=1b1f, idProduct=c006, bcdDevice=c2.64 usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 usb 1-1: config 0 descriptor?? ftdi_sio 1-1:0.0: FTDI USB Serial Device converter detected usb 1-1: Detected FT-X ftdi_sio ttyUSB0: Unable to write latency timer: -71 usb 1-1: FTDI USB Serial Device converter now attached to ttyUSB0 usb 1-1: USB disconnect, device number 50 ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0 ftdi_sio 1-1:0.0: device disconnected