------------[ cut here ]------------ WARNING: CPU: 1 PID: 63 at net/l2tp/l2tp_core.c:1877 l2tp_exit_net+0x148/0x178 net/l2tp/l2tp_core.c:1877 Modules linked in: CPU: 1 UID: 0 PID: 63 Comm: kworker/u8:4 Not tainted 6.12.0-syzkaller-g7b1d1d4cfac0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: netns cleanup_net pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : l2tp_exit_net+0x148/0x178 net/l2tp/l2tp_core.c:1877 lr : idr_is_empty include/linux/idr.h:162 [inline] lr : l2tp_exit_net+0x140/0x178 net/l2tp/l2tp_core.c:1877 sp : ffff80009a9f79d0 x29: ffff80009a9f79d0 x28: ffff80009a9f7a60 x27: 00000000ffffffff x26: 1ffff00012525c20 x25: ffff80009292e0e0 x24: ffff800092728380 x23: ffff0000ed681d80 x22: dfff800000000000 x21: ffff0000edec5120 x20: ffff0000edec50d8 x19: ffff0000edec5000 x18: ffff80009a9f7380 x17: 0000000000035ee0 x16: ffff800080585eb0 x15: 0000000000000001 x14: ffff80008f8205d8 x13: dfff800000000000 x12: 0000000023558965 x11: 00000000e6be9483 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000c1ba5ac0 x7 : ffff80008a8fd8b8 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : 0000000000000080 x0 : ffff0000edec5000 Call trace: l2tp_exit_net+0x148/0x178 net/l2tp/l2tp_core.c:1877 (P) idr_is_empty include/linux/idr.h:162 [inline] (L) l2tp_exit_net+0x140/0x178 net/l2tp/l2tp_core.c:1877 (L) ops_exit_list net/core/net_namespace.c:173 [inline] cleanup_net+0x640/0x9b4 net/core/net_namespace.c:626 process_one_work+0x7bc/0x1600 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x97c/0xeec kernel/workqueue.c:3391 kthread+0x288/0x310 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 irq event stamp: 2264568 hardirqs last enabled at (2264567): [] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:234 hardirqs last disabled at (2264568): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:488 softirqs last enabled at (2264560): [] l2tp_ip_exit_net+0xcc/0x134 net/l2tp/l2tp_ip.c:682 softirqs last disabled at (2264558): [] l2tp_ip_exit_net+0x3c/0x134 net/l2tp/l2tp_ip.c:679 ---[ end trace 0000000000000000 ]--- hsr_slave_0: left promiscuous mode 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 veth1_macvtap: left promiscuous mode veth0_macvtap: left promiscuous mode veth1_vlan: left promiscuous mode veth0_vlan: left promiscuous mode team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device team_slave_0 removed netdevsim netdevsim1 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim1 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim1 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim1 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 bridge_slave_1: left allmulticast mode bridge_slave_1: left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state bridge_slave_0: left allmulticast mode bridge_slave_0: left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state bond0 (unregistering): (slave bond_slave_0): Releasing backup interface bond0 (unregistering): (slave bond_slave_1): Releasing backup interface bond0 (unregistering): Released all slaves hsr_slave_0: left promiscuous mode 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 veth1_macvtap: left promiscuous mode veth0_macvtap: left promiscuous mode veth1_vlan: left promiscuous mode veth0_vlan: left promiscuous mode