BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! turning off the locking correctness validator. CPU: 0 UID: 0 PID: 8790 Comm: cmp Not tainted 6.16.0-rc2-syzkaller-g9aa9b43d689e #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:501 (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:3858 [inline] validate_chain kernel/locking/lockdep.c:3879 [inline] __lock_acquire+0xf9c/0x30a4 kernel/locking/lockdep.c:5240 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5871 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162 cpudl_set+0x7c/0x570 kernel/sched/cpudeadline.c:220 inc_dl_deadline kernel/sched/deadline.c:1858 [inline] inc_dl_tasks kernel/sched/deadline.c:1899 [inline] __enqueue_dl_entity kernel/sched/deadline.c:1995 [inline] enqueue_dl_entity+0xed8/0x16c4 kernel/sched/deadline.c:2089 dl_server_start+0xd8/0x244 kernel/sched/deadline.c:1670 enqueue_task_fair+0xc3c/0x104c kernel/sched/fair.c:7030 enqueue_task+0x7c/0x2f4 kernel/sched/core.c:2084 activate_task kernel/sched/core.c:2126 [inline] ttwu_do_activate+0x19c/0x778 kernel/sched/core.c:3746 ttwu_queue kernel/sched/core.c:4014 [inline] try_to_wake_up+0x4b8/0xdf0 kernel/sched/core.c:4342 default_wake_function+0x58/0x74 kernel/sched/core.c:7120 __pollwake fs/select.c:205 [inline] pollwake+0x158/0x204 fs/select.c:215 __wake_up_common kernel/sched/wait.c:89 [inline] __wake_up_common_lock kernel/sched/wait.c:106 [inline] __wake_up_sync_key+0xf0/0x18c kernel/sched/wait.c:173 sock_def_readable+0x200/0x5b4 net/core/sock.c:3583 tcp_data_ready+0x21c/0x430 net/ipv4/tcp_input.c:5246 tcp_data_queue+0x16a8/0x4914 net/ipv4/tcp_input.c:5336 tcp_rcv_established+0xe64/0x1d4c net/ipv4/tcp_input.c:6308 tcp_v4_do_rcv+0x3c0/0xbc4 net/ipv4/tcp_ipv4.c:1925 tcp_v4_rcv+0x2030/0x28bc net/ipv4/tcp_ipv4.c:2363 ip_protocol_deliver_rcu+0x1f8/0x484 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x27c/0x4e8 net/ipv4/ip_input.c:233 NF_HOOK+0x2c4/0x358 include/linux/netfilter.h:317 ip_local_deliver+0x120/0x194 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:469 [inline] ip_sublist_rcv_finish net/ipv4/ip_input.c:578 [inline] ip_list_rcv_finish net/ipv4/ip_input.c:627 [inline] ip_sublist_rcv+0x8a0/0xb68 net/ipv4/ip_input.c:635 ip_list_rcv+0x398/0x3ec net/ipv4/ip_input.c:669 __netif_receive_skb_list_ptype net/core/dev.c:6020 [inline] __netif_receive_skb_list_core+0x4e4/0x67c net/core/dev.c:6067 __netif_receive_skb_list net/core/dev.c:6119 [inline] netif_receive_skb_list_internal+0x74c/0x9e0 net/core/dev.c:6210 gro_normal_list include/net/gro.h:532 [inline] gro_normal_one include/net/gro.h:546 [inline] gro_complete+0x214/0x608 net/core/gro.c:286 dev_gro_receive+0x1620/0x1dcc net/core/gro.c:529 napi_gro_frags+0x594/0x1030 net/core/gro.c:762 gve_rx drivers/net/ethernet/google/gve/gve_rx.c:917 [inline] gve_clean_rx_done drivers/net/ethernet/google/gve/gve_rx.c:1024 [inline] gve_rx_poll+0x1004/0x365c drivers/net/ethernet/google/gve/gve_rx.c:1095 gve_napi_poll+0x140/0x3ac drivers/net/ethernet/google/gve/gve_main.c:373 __napi_poll+0xb4/0x3fc net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0x5f4/0xd58 net/core/dev.c:7605 handle_softirqs+0x328/0xc88 kernel/softirq.c:579 __do_softirq+0x14/0x20 kernel/softirq.c:613 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 call_on_irq_stack+0x24/0x30 arch/arm64/kernel/entry.S:891 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:86 invoke_softirq kernel/softirq.c:460 [inline] __irq_exit_rcu+0x1b0/0x478 kernel/softirq.c:680 irq_exit_rcu+0x14/0x84 kernel/softirq.c:696 __el1_irq arch/arm64/kernel/entry-common.c:584 [inline] el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:598 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:603 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) __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] (P) _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:194 (P) debug_object_active_state+0x16c/0x350 lib/debugobjects.c:1055 debug_rcu_head_queue kernel/rcu/rcu.h:237 [inline] __call_rcu_common kernel/rcu/tree.c:3075 [inline] call_rcu+0x68/0x96c kernel/rcu/tree.c:3210 slab_free_hook mm/slub.c:2345 [inline] slab_free mm/slub.c:4643 [inline] kmem_cache_free+0x368/0x550 mm/slub.c:4745 vm_area_free+0x108/0x17c mm/vma_init.c:150 remove_vma+0x120/0x138 mm/vma.c:465 exit_mmap+0x414/0xabc mm/mmap.c:1309 __mmput+0xec/0x3e4 kernel/fork.c:1121 mmput+0x70/0xac kernel/fork.c:1144 exit_mm+0x13c/0x200 kernel/exit.c:581 do_exit+0x4b4/0x19fc kernel/exit.c:943 do_group_exit+0x194/0x22c kernel/exit.c:1104 __do_sys_exit_group kernel/exit.c:1115 [inline] __se_sys_exit_group kernel/exit.c:1113 [inline] pid_child_should_wake+0x0/0x1dc kernel/exit.c:1113 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 vkms_vblank_simulate: vblank timer overrun