------------[ cut here ]------------ Not in threaded context on PREEMPT_RT as expected WARNING: CPU: 1 PID: 4317 at kernel/sched/completion.c:71 complete_all+0x1a4/0x1e4 kernel/sched/completion.c:71 Modules linked in: CPU: 1 UID: 0 PID: 4317 Comm: kworker/u8:6 Not tainted 6.15.0-rc2-syzkaller #0 PREEMPT Hardware name: linux,dummy-virt (DT) Workqueue: netns cleanup_net pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : complete_all+0x1a4/0x1e4 kernel/sched/completion.c:71 lr : complete_all+0x1a4/0x1e4 kernel/sched/completion.c:71 sp : ffff8000a2727630 x29: ffff8000a2727630 x28: 1fffe00003ac34ff x27: ffff00001d61a7fc x26: ffff00001d61aaf0 x25: ffff00000f4c5000 x24: 0000000000000000 x23: 0000000004208060 x22: 1ffff000144e4ee8 x21: ffff7fffe309e000 x20: ffff000017580000 x19: ffff00001d61a858 x18: ffff80008d90745c x17: ffff80008703efc0 x16: 1fffe0000d41bb38 x15: dfff800000000000 x14: ffff00006a0c85b0 x13: 0000000000000000 x12: ffff7000144e4e33 x11: 1ffff000144e4e32 x10: ffff7000144e4e32 x9 : dfff800000000000 x8 : ffff8000a2727198 x7 : ffff8000a27272a0 x6 : ffff8000a27271f0 x5 : ffff8000a27271d8 x4 : 0000000000000004 x3 : 1fffe0000d41ad55 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff000017580000 Call trace: complete_all+0x1a4/0x1e4 kernel/sched/completion.c:71 (P) device_pm_remove+0x5c/0x2cc drivers/base/power/main.c:157 device_del+0x2d8/0x7b4 drivers/base/core.c:3856 netdev_unregister_kobject+0x230/0x408 net/core/net-sysfs.c:2308 unregister_netdevice_many_notify+0xd84/0x1af4 net/core/dev.c:12007 unregister_netdevice_many+0x18/0x24 net/core/dev.c:12035 cleanup_net+0x408/0x93c net/core/net_namespace.c:649 process_one_work+0x7cc/0x18d4 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x734/0xb84 kernel/workqueue.c:3400 kthread+0x348/0x5fc kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 irq event stamp: 747794 hardirqs last enabled at (747793): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1525 [inline] hardirqs last enabled at (747793): [] finish_lock_switch kernel/sched/core.c:5130 [inline] hardirqs last enabled at (747793): [] finish_task_switch.isra.0+0x1a8/0x854 kernel/sched/core.c:5248 hardirqs last disabled at (747794): [] el1_dbg+0x24/0x9c arch/arm64/kernel/entry-common.c:488 softirqs last enabled at (747746): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (747746): [] handle_softirqs+0x88c/0xdb4 kernel/softirq.c:607 softirqs last disabled at (747729): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]--- bond0 (unregistering): (slave bond_slave_0): Releasing backup interface bond0 (unregistering): (slave bond_slave_1): Releasing backup interface bond0 (unregistering): Released all slaves bond1 (unregistering): Released all slaves hsr_slave_0: left promiscuous mode hsr_slave_1: left promiscuous mode veth1_macvtap: left promiscuous mode veth0_macvtap: left promiscuous mode veth1_vlan: left promiscuous mode veth0_vlan: left promiscuous mode 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 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 veth1_macvtap: left promiscuous mode veth0_macvtap: left promiscuous mode veth1_vlan: left promiscuous mode veth0_vlan: left promiscuous mode