netdevsim netdevsim6 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim6 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim6 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 1 UID: 0 PID: 7466 Comm: syz-executor Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026 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:3871 [inline] validate_chain kernel/locking/lockdep.c:3892 [inline] __lock_acquire+0xe64/0x2a6c kernel/locking/lockdep.c:5254 lock_acquire+0x150/0x370 kernel/locking/lockdep.c:5908 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:155 [inline] _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:181 alloc_from_new_slab+0x1b4/0x374 mm/slub.c:4508 refill_objects+0x2d4/0x320 mm/slub.c:7416 refill_sheaf+0x44/0x6c mm/slub.c:2885 __pcs_replace_empty_main+0x22c/0x4f4 mm/slub.c:4774 alloc_from_pcs mm/slub.c:4850 [inline] slab_alloc_node mm/slub.c:4984 [inline] __do_kmalloc_node mm/slub.c:5413 [inline] __kmalloc_node_track_caller_noprof+0x4ec/0x6e0 mm/slub.c:5545 kmemdup_noprof+0x44/0x8c mm/util.c:138 kmemdup_noprof include/linux/fortify-string.h:715 [inline] __devinet_sysctl_register+0xc0/0x274 net/ipv4/devinet.c:2732 devinet_sysctl_register+0x164/0x1c0 net/ipv4/devinet.c:2784 inetdev_init+0x250/0x49c net/ipv4/devinet.c:291 inetdev_event+0x248/0x1184 net/ipv4/devinet.c:1590 notifier_call_chain+0x1a4/0x624 kernel/notifier.c:85 raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:453 call_netdevice_notifiers_info+0xb8/0x120 net/core/dev.c:2275 call_netdevice_notifiers_extack net/core/dev.c:2313 [inline] call_netdevice_notifiers net/core/dev.c:2327 [inline] register_netdevice+0x1018/0x14c0 net/core/dev.c:11541 nsim_init_netdevsim drivers/net/netdevsim/netdev.c:1072 [inline] nsim_create+0x944/0xcf4 drivers/net/netdevsim/netdev.c:1154 __nsim_dev_port_add+0x59c/0x95c drivers/net/netdevsim/dev.c:1434 nsim_dev_port_add_all+0x50/0x114 drivers/net/netdevsim/dev.c:1495 nsim_drv_probe+0x780/0xa1c drivers/net/netdevsim/dev.c:1656 nsim_bus_probe+0x20/0x30 drivers/net/netdevsim/bus.c:420 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x29c/0x800 drivers/base/dd.c:706 __driver_probe_device+0x1e0/0x350 drivers/base/dd.c:868 driver_probe_device+0x6c/0x19c drivers/base/dd.c:898 __device_attach_driver+0x198/0x2f8 drivers/base/dd.c:1026 bus_for_each_drv+0x144/0x1dc drivers/base/bus.c:500 __device_attach+0x248/0x390 drivers/base/dd.c:1098 device_initial_probe+0x90/0xc8 drivers/base/dd.c:1153 bus_probe_device+0x58/0x120 drivers/base/bus.c:620 device_add+0x6cc/0x9e0 drivers/base/core.c:3776 device_register+0x28/0x38 drivers/base/core.c:3858 nsim_bus_dev_new drivers/net/netdevsim/bus.c:468 [inline] new_device_store+0x2c4/0x58c drivers/net/netdevsim/bus.c:191 bus_attr_store+0x80/0xa4 drivers/base/bus.c:172 sysfs_kf_write+0xe0/0x108 fs/sysfs/file.c:145 kernfs_fop_write_iter+0x260/0x3b8 fs/kernfs/file.c:345 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x51c/0xa0c fs/read_write.c:687 ksys_write+0x12c/0x228 fs/read_write.c:739 __do_sys_write fs/read_write.c:750 [inline] __se_sys_write fs/read_write.c:747 [inline] __arm64_sys_write+0x84/0x98 fs/read_write.c:747 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:758 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590 netdevsim netdevsim6 netdevsim0: renamed from eth0 8021q: adding VLAN 0 to HW filter on device netdevsim0 netdevsim netdevsim6 netdevsim1: renamed from eth1 8021q: adding VLAN 0 to HW filter on device netdevsim1 netdevsim netdevsim6 netdevsim2: renamed from eth2 8021q: adding VLAN 0 to HW filter on device netdevsim2 netdevsim netdevsim6 netdevsim3: renamed from eth3 8021q: adding VLAN 0 to HW filter on device netdevsim3 bridge0: port 2(bridge_slave_1) entered blocking state bridge0: port 2(bridge_slave_1) entered forwarding state bridge0: port 1(bridge_slave_0) entered blocking state bridge0: port 1(bridge_slave_0) entered forwarding state 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 phy137: Selected rate control algorithm 'minstrel_ht' ieee80211 phy138: Selected rate control algorithm 'minstrel_ht'