BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 0 PID: 4143 Comm: kworker/0:4 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 Workqueue: wg-crypt-wg2 wg_packet_tx_worker Call trace: dump_backtrace+0x0/0x458 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106 dump_stack+0x1c/0x5c lib/dump_stack.c:113 add_chain_cache kernel/locking/lockdep.c:-1 [inline] lookup_chain_cache_add kernel/locking/lockdep.c:3735 [inline] validate_chain kernel/locking/lockdep.c:3756 [inline] __lock_acquire+0x1854/0x67ec kernel/locking/lockdep.c:5012 lock_acquire+0x1f4/0x618 kernel/locking/lockdep.c:5623 seqcount_lockdep_reader_access include/linux/seqlock.h:103 [inline] read_mems_allowed_begin include/linux/cpuset.h:153 [inline] get_any_partial mm/slub.c:2198 [inline] get_partial mm/slub.c:2241 [inline] ___slab_alloc+0x5a0/0xd8c mm/slub.c:3008 __slab_alloc+0x68/0xc0 mm/slub.c:3100 slab_alloc_node mm/slub.c:3191 [inline] slab_alloc mm/slub.c:3233 [inline] kmem_cache_alloc+0x2a4/0x3d4 mm/slub.c:3238 dst_alloc+0xf8/0x170 net/core/dst.c:88 rt_dst_alloc net/ipv4/route.c:1658 [inline] __mkroute_output net/ipv4/route.c:2631 [inline] ip_route_output_key_hash_rcu+0x1204/0x1fe8 net/ipv4/route.c:2854 ip_route_output_key_hash+0x1ac/0x2f8 net/ipv4/route.c:2683 __ip_route_output_key include/net/route.h:126 [inline] ip_route_output_flow+0x3c/0x160 net/ipv4/route.c:2913 send4+0x39c/0xc04 drivers/net/wireguard/socket.c:61 wg_socket_send_skb_to_peer+0xc4/0x1a4 drivers/net/wireguard/socket.c:175 wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline] wg_packet_tx_worker+0x1a4/0x6fc drivers/net/wireguard/send.c:276 process_one_work+0x79c/0x1138 kernel/workqueue.c:2310 worker_thread+0x8f4/0x1034 kernel/workqueue.c:2457 kthread+0x374/0x454 kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:856 Bluetooth: hci72: command 0x0419 tx timeout Bluetooth: hci73: command 0x040f tx timeout