BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! turning off the locking correctness validator. CPU: 0 UID: 0 PID: 7896 Comm: syz-executor Not tainted 6.12.0-syzkaller-g7b1d1d4cfac0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 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+0x1fb8/0x77c8 kernel/locking/lockdep.c:5202 lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5825 do_write_seqcount_begin_nested include/linux/seqlock.h:454 [inline] do_write_seqcount_begin include/linux/seqlock.h:480 [inline] psi_group_change+0x270/0x11d8 kernel/sched/psi.c:792 psi_task_change+0xf4/0x228 kernel/sched/psi.c:912 psi_enqueue kernel/sched/stats.h:158 [inline] enqueue_task+0x1d0/0x204 kernel/sched/core.c:2029 activate_task kernel/sched/core.c:2067 [inline] ttwu_do_activate+0x19c/0x688 kernel/sched/core.c:3680 ttwu_queue kernel/sched/core.c:3953 [inline] try_to_wake_up+0x6a4/0x1274 kernel/sched/core.c:4281 swake_up_locked kernel/sched/swait.c:29 [inline] swake_up_one+0x78/0x13c kernel/sched/swait.c:52 swake_up_one_online+0xc0/0x198 kernel/rcu/tree.c:1092 __rcu_report_exp_rnp+0x6d4/0x968 kernel/rcu/tree_exp.h:203 rcu_report_exp_cpu_mult+0xec/0x53c kernel/rcu/tree_exp.h:252 rcu_report_exp_rdp kernel/rcu/tree_exp.h:261 [inline] rcu_preempt_deferred_qs_irqrestore+0x15c/0xf30 kernel/rcu/tree_plugin.h:517 rcu_preempt_deferred_qs kernel/rcu/tree_plugin.h:618 [inline] rcu_note_context_switch+0x278/0x101c kernel/rcu/tree_plugin.h:355 __schedule+0x2c8/0x27d0 kernel/sched/core.c:6573 preempt_schedule_common+0xe8/0x1dc kernel/sched/core.c:6872 preempt_schedule+0x60/0x80 kernel/sched/core.c:6896 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock_irqrestore+0x94/0x98 kernel/locking/spinlock.c:194 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] prepare_to_wait_event+0x320/0x388 kernel/sched/wait.c:300 synchronize_rcu_expedited+0x4e4/0x674 kernel/rcu/tree_exp.h:991 synchronize_net net/core/dev.c:11286 [inline] unregister_netdevice_many_notify+0x18e8/0x1c64 net/core/dev.c:11448 unregister_netdevice_many net/core/dev.c:11469 [inline] unregister_netdevice_queue+0x2d8/0x324 net/core/dev.c:11343 unregister_netdevice include/linux/netdevice.h:3118 [inline] nsim_destroy+0x15c/0x50c drivers/net/netdevsim/netdev.c:778 __nsim_dev_port_del+0x140/0x1a0 drivers/net/netdevsim/dev.c:1428 nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1440 [inline] nsim_dev_reload_destroy+0x240/0x43c drivers/net/netdevsim/dev.c:1661 nsim_drv_remove+0x5c/0x154 drivers/net/netdevsim/dev.c:1676 nsim_bus_remove+0x20/0x30 drivers/net/netdevsim/bus.c:398 device_remove drivers/base/dd.c:567 [inline] __device_release_driver drivers/base/dd.c:1273 [inline] device_release_driver_internal+0x3e4/0x698 drivers/base/dd.c:1296 device_release_driver+0x28/0x38 drivers/base/dd.c:1319 bus_remove_device+0x314/0x3b4 drivers/base/bus.c:576 device_del+0x480/0x828 drivers/base/core.c:3861 device_unregister+0x2c/0xcc drivers/base/core.c:3902 nsim_bus_dev_del drivers/net/netdevsim/bus.c:462 [inline] del_device_store+0x2c4/0x39c drivers/net/netdevsim/bus.c:226 bus_attr_store+0x80/0xa4 drivers/base/bus.c:172 sysfs_kf_write+0x200/0x280 fs/sysfs/file.c:136 kernfs_fop_write_iter+0x334/0x48c fs/kernfs/file.c:334 new_sync_write fs/read_write.c:590 [inline] vfs_write+0x920/0xcf4 fs/read_write.c:683 ksys_write+0x15c/0x26c fs/read_write.c:736 __do_sys_write fs/read_write.c:748 [inline] __se_sys_write fs/read_write.c:745 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:745 __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+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 netdevsim netdevsim3 netdevsim0: renamed from eth0 netdevsim netdevsim3 netdevsim1: renamed from eth1 netdevsim netdevsim3 netdevsim2: renamed from eth2 netdevsim netdevsim3 netdevsim3: renamed from eth3 8021q: adding VLAN 0 to HW filter on device bond0 8021q: adding VLAN 0 to HW filter on device team0 8021q: adding VLAN 0 to HW filter on device batadv0 veth0_vlan: entered promiscuous mode veth1_vlan: entered promiscuous mode veth0_macvtap: entered promiscuous mode veth1_macvtap: entered promiscuous mode batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_0 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: batadv0: Interface activated: batadv_slave_0 batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3f) already exists on: batadv_slave_1 batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems! batman_adv: batadv0: Interface activated: batadv_slave_1 netdevsim netdevsim3 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim3 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim3 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim3 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 ieee80211 phy29: Selected rate control algorithm 'minstrel_ht' ieee80211 phy30: Selected rate control algorithm 'minstrel_ht'