netdevsim netdevsim7 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim7 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim7 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: 7490 Comm: syz-executor Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 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:3855 [inline] validate_chain kernel/locking/lockdep.c:3876 [inline] __lock_acquire+0xfdc/0x2ebc kernel/locking/lockdep.c:5237 lock_acquire+0x140/0x364 kernel/locking/lockdep.c:5868 __raw_spin_lock include/linux/spinlock_api_smp.h:158 [inline] _raw_spin_lock+0x48/0x60 kernel/locking/spinlock.c:158 spin_lock include/linux/spinlock.h:342 [inline] simple_pin_fs+0x3c/0x170 fs/libfs.c:1099 debugfs_start_creating+0x9c/0x1ac fs/debugfs/inode.c:379 __debugfs_create_file+0x7c/0x36c fs/debugfs/inode.c:428 debugfs_create_file_unsafe+0x54/0x6c fs/debugfs/inode.c:509 debugfs_create_mode_unsafe fs/debugfs/file.c:-1 [inline] debugfs_create_u32+0x88/0xa0 fs/debugfs/file.c:681 nsim_bpf_init+0xf0/0x238 drivers/net/netdevsim/bpf.c:632 nsim_init_netdevsim drivers/net/netdevsim/netdev.c:1062 [inline] nsim_create+0x8fc/0xcec drivers/net/netdevsim/netdev.c:1151 __nsim_dev_port_add+0x59c/0x95c drivers/net/netdevsim/dev.c:1509 nsim_dev_port_add_all+0x50/0x114 drivers/net/netdevsim/dev.c:1570 nsim_drv_probe+0x758/0xa0c drivers/net/netdevsim/dev.c:1731 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:709 __driver_probe_device+0x1e0/0x34c drivers/base/dd.c:871 driver_probe_device+0x6c/0x19c drivers/base/dd.c:901 __device_attach_driver+0x194/0x2f0 drivers/base/dd.c:1029 bus_for_each_drv+0x144/0x1dc drivers/base/bus.c:500 __device_attach+0x248/0x390 drivers/base/dd.c:1101 device_initial_probe+0x90/0xc8 drivers/base/dd.c:1156 bus_probe_device+0x58/0x120 drivers/base/bus.c:613 device_add+0x6cc/0x9f0 drivers/base/core.c:3706 device_register+0x28/0x38 drivers/base/core.c:3788 nsim_bus_dev_new drivers/net/netdevsim/bus.c:471 [inline] new_device_store+0x2dc/0x5c0 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:142 kernfs_fop_write_iter+0x260/0x3b8 fs/kernfs/file.c:352 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x51c/0xa0c fs/read_write.c:688 ksys_write+0x12c/0x228 fs/read_write.c:740 __do_sys_write fs/read_write.c:751 [inline] __se_sys_write fs/read_write.c:748 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:748 __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:736 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:755 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594 netdevsim netdevsim7 netdevsim0: renamed from eth0 8021q: adding VLAN 0 to HW filter on device netdevsim0 netdevsim netdevsim7 netdevsim1: renamed from eth1 8021q: adding VLAN 0 to HW filter on device netdevsim1 netdevsim netdevsim7 netdevsim2: renamed from eth2 8021q: adding VLAN 0 to HW filter on device netdevsim2 netdevsim netdevsim7 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 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 phy139: Selected rate control algorithm 'minstrel_ht' ieee80211 phy140: Selected rate control algorithm 'minstrel_ht'