BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 UID: 0 PID: 9415 Comm: syz-executor Not tainted syzkaller #0 PREEMPT 
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+0x14c/0x2e0 kernel/locking/lockdep.c:5868
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162
 get_partial_node+0x50/0x430 mm/slub.c:3494
 get_partial mm/slub.c:3610 [inline]
 ___slab_alloc+0x90c/0x1258 mm/slub.c:4626
 __slab_alloc+0x80/0x12c mm/slub.c:4770
 __slab_alloc_node mm/slub.c:4846 [inline]
 slab_alloc_node mm/slub.c:5268 [inline]
 __do_kmalloc_node mm/slub.c:5641 [inline]
 __kmalloc_node_track_caller_noprof+0x580/0x748 mm/slub.c:5751
 kmalloc_reserve+0x124/0x268 net/core/skbuff.c:601
 __alloc_skb+0x170/0x2ec net/core/skbuff.c:670
 alloc_skb include/linux/skbuff.h:1383 [inline]
 nlmsg_new include/net/netlink.h:1055 [inline]
 rtmsg_ifinfo_build_skb+0x90/0x24c net/core/rtnetlink.c:4400
 rtmsg_ifinfo_event net/core/rtnetlink.c:4442 [inline]
 rtmsg_ifinfo+0xa0/0x188 net/core/rtnetlink.c:4451
 netif_close_many+0x248/0x448 net/core/dev.c:1783
 netif_close_many_and_unlock net/core/dev.c:12184 [inline]
 unregister_netdevice_many_notify+0x6bc/0x20e8 net/core/dev.c:12248
 unregister_netdevice_many net/core/dev.c:12347 [inline]
 unregister_netdevice_queue+0x2b4/0x300 net/core/dev.c:12161
 unregister_netdevice include/linux/netdevice.h:3389 [inline]
 nsim_destroy+0x1c8/0x600 drivers/net/netdevsim/netdev.c:1178
 __nsim_dev_port_del+0x13c/0x19c drivers/net/netdevsim/dev.c:1473
 nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1485 [inline]
 nsim_dev_reload_destroy+0x240/0x43c drivers/net/netdevsim/dev.c:1707
 nsim_drv_remove+0x5c/0x154 drivers/net/netdevsim/dev.c:1722
 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:1274 [inline]
 device_release_driver_internal+0x3a8/0x68c drivers/base/dd.c:1297
 device_release_driver+0x28/0x38 drivers/base/dd.c:1320
 bus_remove_device+0x310/0x3b0 drivers/base/bus.c:579
 device_del+0x47c/0x808 drivers/base/core.c:3878
 device_unregister+0x2c/0xcc 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+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:746
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
netdevsim netdevsim9 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim9 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim9 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim9 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim9 netdevsim0: renamed from eth0
netdevsim netdevsim9 netdevsim1: renamed from eth1
netdevsim netdevsim9 netdevsim2: renamed from eth2
netdevsim netdevsim9 netdevsim3: renamed from eth3
8021q: adding VLAN 0 to HW filter on device bond0
8021q: adding VLAN 0 to HW filter on device team0
hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network
hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network
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 phy207: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy208: Selected rate control algorithm 'minstrel_ht'
EXT4-fs error (device loop9): ext4_readdir:264: inode #2: block 13: comm syz-executor: path /0/bus: bad entry in directory: rec_len is smaller than minimal - offset=24, inode=11, rec_len=8, size=1024 fake=0
EXT4-fs (loop9): unmounting filesystem 00000000-0000-0000-0000-000000000000.