BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 0 UID: 0 PID: 8714 Comm: syz-executor Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (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:3855 [inline]
 validate_chain kernel/locking/lockdep.c:3876 [inline]
 __lock_acquire+0xf9c/0x30a4 kernel/locking/lockdep.c:5237
 lock_acquire+0x140/0x2e0 kernel/locking/lockdep.c:5868
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
 _raw_spin_lock_bh+0x48/0x60 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:356 [inline]
 nsim_fib_event_schedule_work drivers/net/netdevsim/fib.c:1011 [inline]
 nsim_fib_event_nb+0x974/0xdc8 drivers/net/netdevsim/fib.c:1043
 notifier_call_chain+0x190/0x4cc kernel/notifier.c:85
 atomic_notifier_call_chain+0xd0/0x180 kernel/notifier.c:223
 call_fib_notifiers+0x44/0x74 net/core/fib_notifier.c:35
 call_fib6_notifiers+0x50/0x80 net/ipv6/fib6_notifier.c:22
 fib6_del_route net/ipv6/ip6_fib.c:-1 [inline]
 fib6_del+0xd14/0x120c net/ipv6/ip6_fib.c:2091
 fib6_clean_node+0x224/0x4c4 net/ipv6/ip6_fib.c:2253
 fib6_walk_continue+0x654/0x878 net/ipv6/ip6_fib.c:2175
 fib6_walk+0x140/0x254 net/ipv6/ip6_fib.c:2223
 fib6_clean_tree net/ipv6/ip6_fib.c:2303 [inline]
 __fib6_clean_all+0x1dc/0x310 net/ipv6/ip6_fib.c:2319
 fib6_clean_all+0x3c/0x50 net/ipv6/ip6_fib.c:2330
 rt6_sync_down_dev net/ipv6/route.c:5014 [inline]
 rt6_disable_ip+0x104/0x6cc net/ipv6/route.c:5019
 addrconf_ifdown+0x130/0x148c net/ipv6/addrconf.c:3853
 addrconf_notify+0x2f4/0xd14 net/ipv6/addrconf.c:-1
 notifier_call_chain+0x190/0x4cc kernel/notifier.c:85
 raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:453
 call_netdevice_notifiers_info net/core/dev.c:2230 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2268 [inline]
 call_netdevice_notifiers net/core/dev.c:2282 [inline]
 netif_close_many+0x2bc/0x448 net/core/dev.c:1785
 netif_close_many_and_unlock net/core/dev.c:12283 [inline]
 unregister_netdevice_many_notify+0x6cc/0x2110 net/core/dev.c:12347
 unregister_netdevice_many net/core/dev.c:12446 [inline]
 unregister_netdevice_queue+0x26c/0x2fc net/core/dev.c:12260
 unregister_netdevice include/linux/netdevice.h:3405 [inline]
 nsim_destroy+0x1c8/0x600 drivers/net/netdevsim/netdev.c:1180
 __nsim_dev_port_del+0x13c/0x19c drivers/net/netdevsim/dev.c:1528
 nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1540 [inline]
 nsim_dev_reload_destroy+0x240/0x43c drivers/net/netdevsim/dev.c:1763
 nsim_drv_remove+0x5c/0x154 drivers/net/netdevsim/dev.c:1778
 nsim_bus_remove+0x20/0x30 drivers/net/netdevsim/bus.c:419
 device_remove drivers/base/dd.c:569 [inline]
 __device_release_driver drivers/base/dd.c:1282 [inline]
 device_release_driver_internal+0x3a8/0x68c drivers/base/dd.c:1305
 device_release_driver+0x28/0x38 drivers/base/dd.c:1328
 bus_remove_device+0x310/0x3d8 drivers/base/bus.c:616
 device_del+0x47c/0x808 drivers/base/core.c:3878
 device_unregister+0x2c/0xf4 drivers/base/core.c:3919
 nsim_bus_dev_del drivers/net/netdevsim/bus.c:483 [inline]
 del_device_store+0x27c/0x31c drivers/net/netdevsim/bus.c:244
 bus_attr_store+0x80/0xa4 drivers/base/bus.c:172
 sysfs_kf_write+0x1a8/0x23c fs/sysfs/file.c:142
 kernfs_fop_write_iter+0x33c/0x4d0 fs/kernfs/file.c:352
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x540/0xa3c fs/read_write.c:686
 ksys_write+0x120/0x210 fs/read_write.c:738
 __do_sys_write fs/read_write.c:749 [inline]
 __se_sys_write fs/read_write.c:746 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:746
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
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: batadv0: Interface activated: batadv_slave_0
batman_adv: batadv0: Interface activated: batadv_slave_1
ieee80211 phy23: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy24: Selected rate control algorithm 'minstrel_ht'