BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 1 PID: 4385 Comm: kworker/1:6 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Workqueue: mld mld_ifc_work Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf8/0x160 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:3772 [inline] validate_chain kernel/locking/lockdep.c:3793 [inline] __lock_acquire+0x1b40/0x6544 kernel/locking/lockdep.c:5049 lock_acquire+0x20c/0x644 kernel/locking/lockdep.c:5662 local_lock_acquire+0x3c/0x98 include/linux/local_lock_internal.h:29 ___slab_alloc+0x1cc/0xec8 mm/slub.c:3055 __slab_alloc+0x74/0xd0 mm/slub.c:3240 slab_alloc_node mm/slub.c:3325 [inline] slab_alloc mm/slub.c:3367 [inline] __kmem_cache_alloc_lru mm/slub.c:3374 [inline] kmem_cache_alloc+0x2a0/0x318 mm/slub.c:3383 skb_clone+0x194/0x308 net/core/skbuff.c:1660 dev_queue_xmit_nit+0x210/0x9a4 net/core/dev.c:2321 xmit_one net/core/dev.c:3666 [inline] dev_hard_start_xmit+0x108/0x8e0 net/core/dev.c:3686 sch_direct_xmit+0x204/0x480 net/sched/sch_generic.c:342 __dev_xmit_skb net/core/dev.c:3907 [inline] __dev_queue_xmit+0x1384/0x309c net/core/dev.c:4312 dev_queue_xmit include/linux/netdevice.h:3051 [inline] neigh_hh_output include/net/neighbour.h:529 [inline] neigh_output include/net/neighbour.h:543 [inline] ip6_finish_output2+0xd2c/0x1844 net/ipv6/ip6_output.c:138 __ip6_finish_output net/ipv6/ip6_output.c:205 [inline] ip6_finish_output+0x594/0x930 net/ipv6/ip6_output.c:216 NF_HOOK_COND include/linux/netfilter.h:291 [inline] ip6_output+0x274/0x500 net/ipv6/ip6_output.c:237 dst_output include/net/dst.h:453 [inline] NF_HOOK+0x15c/0x430 include/linux/netfilter.h:302 mld_sendpack+0x8a4/0x113c net/ipv6/mcast.c:1825 mld_send_cr net/ipv6/mcast.c:2126 [inline] mld_ifc_work+0x76c/0xa94 net/ipv6/mcast.c:2658 process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292 worker_thread+0x8c8/0xfbc kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850