el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 6280 at lib/ref_tracker.c:179 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] WARNING: CPU: 0 PID: 6280 at lib/ref_tracker.c:179 ref_tracker_dir_exit+0x390/0x4b4 lib/ref_tracker.c:178 Modules linked in: CPU: 0 PID: 6280 Comm: kworker/u4:6 Not tainted 6.8.0-rc6-syzkaller-g9910665503b3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Workqueue: netns cleanup_net pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : ref_tracker_dir_exit+0x390/0x4b4 include/linux/spinlock.h:406 lr : spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] lr : ref_tracker_dir_exit+0x390/0x4b4 lib/ref_tracker.c:178 sp : ffff800098357980 x29: ffff800098357a00 x28: ffff00011c3601e0 x27: 1ffff0001306af34 x26: dfff800000000000 x25: ffff00011c360230 x24: dead000000000100 x23: ffff00011c360230 x22: ffff00011c3601e0 x21: ffff00011c360230 x20: ffff00011c360230 x19: 1fffe0001b2aed10 x18: 1fffe000367fff96 x17: ffff80008ec9d000 x16: ffff800080320090 x15: 0000000000000001 x14: 1fffe000368027e8 x13: 0000000000000000 x12: 0000000000000003 x11: 0000000000000001 x10: 0000000000000003 x9 : 0000000000000001 x8 : 0000000000000008 x7 : ffff800080296b30 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000006 x1 : ffff80008aedda60 x0 : ffff800125414000 Call trace: spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] ref_tracker_dir_exit+0x390/0x4b4 lib/ref_tracker.c:178 net_free+0x80/0xf4 net/core/net_namespace.c:452 cleanup_net+0x82c/0x8d0 net/core/net_namespace.c:639 process_one_work+0x694/0x1204 kernel/workqueue.c:2633 process_scheduled_works kernel/workqueue.c:2706 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:2787 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 irq event stamp: 7377578 hardirqs last enabled at (7377577): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1397 [inline] hardirqs last enabled at (7377577): [] finish_lock_switch+0xbc/0x1e4 kernel/sched/core.c:5154 hardirqs last disabled at (7377578): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:470 softirqs last enabled at (7377574): [] softirq_handle_end kernel/softirq.c:399 [inline] softirqs last enabled at (7377574): [] __do_softirq+0xac8/0xce4 kernel/softirq.c:582 softirqs last disabled at (7377525): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 ---[ 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 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 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 bond0 (unregistering): (slave bond_slave_1): Releasing backup interface bond0 (unregistering): (slave bond_slave_0): Releasing backup interface bond0 (unregistering): Released all slaves