======================================
| [ 350.450312][ T949] netdevsim: Failed to replace nexthop bucket
| [ 356.165076][ T988] Failed to register nexthop notifier
| [ 357.477454][ C1] BUG: spinlock bad magic on CPU#1, kworker/u16:1/75
| [ 357.477961][ C1] lock: noop_qdisc+0x240/0x300, .magic: 00000000, .owner: kworker/u16:1/75, .owner_cpu: 1
[ 357.479060][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 357.479722][ C1] Workqueue: netns cleanup_net
[ 357.480043][ C1] Call Trace:
[ 357.480289][ C1]
[ 357.480450][ C1] dump_stack_lvl (lib/dump_stack.c:122)
[ 357.480756][ C1] do_raw_spin_unlock (kernel/locking/spinlock_debug.c:100 kernel/locking/spinlock_debug.c:141)
[ 357.481086][ C1] _raw_spin_unlock (./arch/x86/include/asm/preempt.h:94 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186)
[ 357.481393][ C1] net_tx_action (./include/net/sch_generic.h:226 ./include/net/sch_generic.h:217 ./include/net/pkt_sched.h:128 ./include/net/pkt_sched.h:124 net/core/dev.c:5323)
[ 357.481691][ C1] handle_softirqs (kernel/softirq.c:554)
[ 357.481990][ C1] ? dev_deactivate_many (./include/linux/bottom_half.h:33 ./include/linux/netdevice.h:4448 net/sched/sch_generic.c:571 net/sched/sch_generic.c:1363)
[ 357.482298][ C1] do_softirq (kernel/softirq.c:455 kernel/softirq.c:442)
[ 357.482526][ C1]
[ 357.482677][ C1]
[ 357.482827][ C1] __local_bh_enable_ip (kernel/softirq.c:382)
[ 357.483118][ C1] dev_deactivate_many (net/sched/sch_generic.c:1356)
[ 357.483414][ C1] __dev_close_many (net/core/dev.c:1547)
[ 357.483714][ C1] ? __pfx___dev_close_many (net/core/dev.c:1522)
[ 357.484017][ C1] dev_close_many (net/core/dev.c:1585)
[ 357.484314][ C1] ? lock_acquire.part.0 (kernel/locking/lockdep.c:466 kernel/locking/lockdep.c:5761)
[ 357.484860][ C1] ? default_device_exit_batch (net/core/dev.c:11876)
[ 357.485167][ C1] ? __pfx_dev_close_many (net/core/dev.c:1575)
[ 357.485693][ C1] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:129)
[ 357.485992][ C1] unregister_netdevice_many_notify (net/core/dev.c:11321)
[ 357.486406][ C1] ? lock_acquire (kernel/locking/lockdep.c:5732)
[ 357.486696][ C1] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52))
[ 357.487040][ C1] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752)
[ 357.487352][ C1] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11288)
[ 357.487777][ C1] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3))
[ 357.488107][ C1] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3189 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91)
[ 357.488410][ C1] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3189 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91)
[ 357.489057][ C1] ? rtnl_is_locked (net/core/rtnetlink.c:164)
[ 357.489422][ C1] ? unregister_netdevice_queue (net/core/dev.c:11273)
[ 357.489817][ C1] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11272)
[ 357.490150][ C1] default_device_exit_batch (net/core/dev.c:11890)
[ 357.490393][ C1] ? __pfx_default_device_exit_batch (net/core/dev.c:11865)
[ 357.490748][ C1] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3189 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91)
[ 357.491025][ C1] ? nexthop_net_exit_batch_rtnl (net/ipv4/nexthop.c:585 net/ipv4/nexthop.c:2146 net/ipv4/nexthop.c:2654 net/ipv4/nexthop.c:4004)
[ 357.491326][ C1] cleanup_net (net/core/net_namespace.c:625 (discriminator 3))
[ 357.491561][ C1] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5724)
[ 357.491932][ C1] ? __pfx_cleanup_net (net/core/net_namespace.c:570)
[ 357.492170][ C1] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52))
[ 357.492440][ C1] ? process_one_work (kernel/workqueue.c:3207)
[ 357.492709][ C1] ? lock_acquire (kernel/locking/lockdep.c:5732)
[ 357.493019][ C1] ? process_one_work (kernel/workqueue.c:3207)
[ 357.493390][ C1] process_one_work (kernel/workqueue.c:3231)
[ 357.493802][ C1] ? __pfx___lock_release (kernel/locking/lockdep.c:5411)
[ 357.494105][ C1] ? __pfx_process_one_work (kernel/workqueue.c:3133)
[ 357.494345][ C1] ? assign_work (kernel/workqueue.c:1202)
[ 357.494673][ C1] worker_thread (kernel/workqueue.c:3306 kernel/workqueue.c:3390)
[ 357.494975][ C1] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358)
[ 357.495318][ C1] ? __pfx_worker_thread (kernel/workqueue.c:3339)
[ 357.495588][ C1] ? __pfx_worker_thread (kernel/workqueue.c:3339)
[ 357.495866][ C1] kthread (kernel/kthread.c:389)
[ 357.496076][ C1] ? __pfx_kthread (kernel/kthread.c:342)
[ 357.496363][ C1] ret_from_fork (arch/x86/kernel/process.c:147)
[ 357.496639][ C1] ? __pfx_kthread (kernel/kthread.c:342)
Finger prints:
do_raw_spin_unlock:_raw_spin_unlock:net_tx_action:handle_softirqs:do_softirq