BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! turning off the locking correctness validator. CPU: 0 UID: 0 PID: 11 Comm: kworker/u8:0 Not tainted 6.13.0-rc2-syzkaller-g2e7aff49b5da #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: netns cleanup_net Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:484 (C) __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 lookup_chain_cache_add kernel/locking/lockdep.c:3851 [inline] validate_chain kernel/locking/lockdep.c:3872 [inline] __lock_acquire+0x2070/0x7904 kernel/locking/lockdep.c:5226 lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5849 local_lock_acquire+0x44/0x1ac include/linux/local_lock_internal.h:29 get_random_u8+0x144/0x5fc drivers/char/random.c:551 get_random_u32_below include/linux/random.h:78 [inline] kfence_guarded_alloc+0x44/0xb04 mm/kfence/core.c:421 __kfence_alloc+0x33c/0x404 mm/kfence/core.c:1136 kfence_alloc include/linux/kfence.h:129 [inline] slab_alloc_node mm/slub.c:4137 [inline] kmem_cache_alloc_noprof+0x364/0x410 mm/slub.c:4160 skb_clone+0x1c8/0x330 net/core/skbuff.c:2084 dev_queue_xmit_nit+0x278/0xa28 net/core/dev.c:2315 xmit_one net/core/dev.c:3586 [inline] dev_hard_start_xmit+0x128/0x904 net/core/dev.c:3606 sch_direct_xmit+0x250/0x588 net/sched/sch_generic.c:343 __dev_xmit_skb net/core/dev.c:3827 [inline] __dev_queue_xmit+0x14a4/0x35b4 net/core/dev.c:4400 dev_queue_xmit include/linux/netdevice.h:3168 [inline] neigh_hh_output include/net/neighbour.h:523 [inline] neigh_output include/net/neighbour.h:537 [inline] ip_finish_output2+0xdb4/0x139c net/ipv4/ip_output.c:236 __ip_finish_output+0x1b0/0x45c ip_finish_output+0x44/0x304 net/ipv4/ip_output.c:324 NF_HOOK_COND include/linux/netfilter.h:303 [inline] ip_output+0x1a8/0x21c net/ipv4/ip_output.c:434 dst_output include/net/dst.h:450 [inline] ip_local_out net/ipv4/ip_output.c:130 [inline] __ip_queue_xmit+0xe14/0x18e8 net/ipv4/ip_output.c:536 ip_queue_xmit+0x5c/0x78 net/ipv4/ip_output.c:550 __tcp_transmit_skb+0x1954/0x34c4 net/ipv4/tcp_output.c:1466 tcp_transmit_skb net/ipv4/tcp_output.c:1484 [inline] tcp_write_xmit+0x12d8/0x5390 net/ipv4/tcp_output.c:2827 __tcp_push_pending_frames+0x98/0x228 net/ipv4/tcp_output.c:3010 tcp_push_pending_frames include/net/tcp.h:2107 [inline] tcp_data_snd_check net/ipv4/tcp_input.c:5741 [inline] tcp_rcv_established+0xedc/0x1f80 net/ipv4/tcp_input.c:6175 tcp_v4_do_rcv+0x3b8/0xc44 net/ipv4/tcp_ipv4.c:1916 tcp_v4_rcv+0x2498/0x2dbc net/ipv4/tcp_ipv4.c:2351 ip_protocol_deliver_rcu+0x1f8/0x484 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x284/0x4f0 net/ipv4/ip_input.c:233 NF_HOOK+0x328/0x3d4 include/linux/netfilter.h:314 ip_local_deliver+0x120/0x194 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:460 [inline] ip_sublist_rcv_finish net/ipv4/ip_input.c:578 [inline] ip_list_rcv_finish net/ipv4/ip_input.c:628 [inline] ip_sublist_rcv+0x918/0xc3c net/ipv4/ip_input.c:636 ip_list_rcv+0x3ec/0x440 net/ipv4/ip_input.c:670 __netif_receive_skb_list_ptype net/core/dev.c:5715 [inline] __netif_receive_skb_list_core+0x5c4/0x748 net/core/dev.c:5762 __netif_receive_skb_list net/core/dev.c:5814 [inline] netif_receive_skb_list_internal+0x844/0xb34 net/core/dev.c:5905 gro_normal_list include/net/gro.h:515 [inline] napi_complete_done+0x250/0x674 net/core/dev.c:6256 gve_napi_poll+0x1b4/0x35c drivers/net/ethernet/google/gve/gve_main.c:343 __napi_poll+0xb4/0x3fc net/core/dev.c:6883 napi_poll net/core/dev.c:6952 [inline] net_rx_action+0x6a8/0xf4c net/core/dev.c:7074 handle_softirqs+0x320/0xd34 kernel/softirq.c:554 __do_softirq+0x14/0x20 kernel/softirq.c:588 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:891 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:86 invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0x1d8/0x544 kernel/softirq.c:655 irq_exit_rcu+0x14/0x84 kernel/softirq.c:671 __el1_irq arch/arm64/kernel/entry-common.c:561 [inline] el1_interrupt+0x38/0x68 arch/arm64/kernel/entry-common.c:575 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:580 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:596 __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] (P) arch_local_irq_enable arch/arm64/include/asm/irqflags.h:48 [inline] (P) preempt_schedule_irq+0x78/0x188 kernel/sched/core.c:7077 (P) preempt_schedule_irq+0x74/0x188 kernel/sched/core.c:7077 (L) arm64_preempt_schedule_irq arch/arm64/kernel/entry-common.c:301 [inline] __el1_irq arch/arm64/kernel/entry-common.c:563 [inline] el1_interrupt+0x4c/0x68 arch/arm64/kernel/entry-common.c:575 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:580 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:596 __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P) arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] (P) lockdep_unregister_key+0x3b0/0x46c kernel/locking/lockdep.c:6591 (P) lockdep_unregister_key+0x3a4/0x46c kernel/locking/lockdep.c:6590 (L) __qdisc_destroy+0x170/0x4d8 net/sched/sch_generic.c:1085 qdisc_put net/sched/sch_generic.c:1111 [inline] dev_shutdown+0x360/0x480 net/sched/sch_generic.c:1499 unregister_netdevice_many_notify+0x834/0x1c6c net/core/dev.c:11515 unregister_netdevice_many net/core/dev.c:11590 [inline] default_device_exit_batch+0xa00/0xa80 net/core/dev.c:12073 ops_exit_list net/core/net_namespace.c:177 [inline] cleanup_net+0x6b8/0x9b4 net/core/net_namespace.c:632 process_one_work+0x7a8/0x15cc kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x97c/0xeec kernel/workqueue.c:3391 kthread+0x288/0x310 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862