netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 tipc: TX() has been purged, node left! device hsr_slave_0 left promiscuous mode device hsr_slave_1 left promiscuous mode batman_adv: batadv0: Interface deactivated: batadv_slave_0 batman_adv: batadv0: Removing interface: batadv_slave_0 batman_adv: batadv0: Interface deactivated: batadv_slave_1 batman_adv: batadv0: Removing interface: batadv_slave_1 device bridge_slave_1 left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state device bridge_slave_0 left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state BUG: MAX_LOCKDEP_ENTRIES too low! turning off the locking correctness validator. CPU: 0 PID: 11415 Comm: kworker/u16:5 Not tainted 5.9.0-rc8-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 Workqueue: netns cleanup_net Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x198/0x1fd lib/dump_stack.c:118 alloc_list_entry kernel/locking/lockdep.c:1310 [inline] add_lock_to_list.constprop.0.cold+0x11/0x18 kernel/locking/lockdep.c:1331 check_prev_add kernel/locking/lockdep.c:2548 [inline] check_prevs_add kernel/locking/lockdep.c:2601 [inline] validate_chain kernel/locking/lockdep.c:3218 [inline] __lock_acquire+0x3661/0x5780 kernel/locking/lockdep.c:4441 lock_acquire+0x1f3/0xaf0 kernel/locking/lockdep.c:5029 kernfs_drain fs/kernfs/dir.c:468 [inline] __kernfs_remove+0x829/0xa30 fs/kernfs/dir.c:1323