__do_sys_unshare kernel/fork.c:3499 [inline] __se_sys_unshare kernel/fork.c:3497 [inline] __arm64_sys_unshare+0x3c/0x50 kernel/fork.c:3497 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 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: 1 PID: 1979 at lib/ref_tracker.c:179 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] WARNING: CPU: 1 PID: 1979 at lib/ref_tracker.c:179 ref_tracker_dir_exit+0x390/0x4b4 lib/ref_tracker.c:178 Modules linked in: CPU: 1 PID: 1979 Comm: kworker/u4:8 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 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 : ffff80009c187980 x29: ffff80009c187a00 x28: ffff0000eb24bb60 x27: 1ffff00013830f34 x26: dfff800000000000 x25: ffff0000eb24bbb0 x24: dead000000000100 x23: ffff0000eb24bbb0 x22: ffff0000eb24bb60 x21: ffff0000eb24bbb0 x20: ffff0000eb24bbb0 x19: 1fffe0001d2dd100 x18: 1fffe00036804396 x17: ffff80008ec9d000 x16: ffff80008032116c x15: 0000000000000001 x14: 1fffe00036806be8 x13: 0000000000000000 x12: 0000000000000003 x11: 0000000000000001 x10: 0000000000000003 x9 : 0000000000000001 x8 : 0000000000000008 x7 : ffff800080297c0c x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000006 x1 : ffff80008aedea60 x0 : ffff800125436000 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: 4024724 hardirqs last enabled at (4024723): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1397 [inline] hardirqs last enabled at (4024723): [] finish_lock_switch+0xbc/0x1e4 kernel/sched/core.c:5154 hardirqs last disabled at (4024724): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:470 softirqs last enabled at (4024720): [] softirq_handle_end kernel/softirq.c:399 [inline] softirqs last enabled at (4024720): [] __do_softirq+0xac8/0xce4 kernel/softirq.c:582 softirqs last disabled at (4024705): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 ---[ end trace 0000000000000000 ]--- 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 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