====================================== | [ 21.271156][ T11] #3: ffffffffb3a01dc8 (rtnl_mutex){+.+.}-{4:4}, at: default_device_exit_batch (net/core/dev.c:12109) | [ 21.271446][ T11] #4: ffffffffb39f0a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) | [ 21.271729][ T11] | [ 21.271729][ T11] stack backtrace: [ 21.272150][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 21.272329][ T11] Workqueue: netns cleanup_net [ 21.272478][ T11] Call Trace: [ 21.272586][ T11] [ 21.272662][ T11] dump_stack_lvl (lib/dump_stack.c:123) [ 21.272809][ T11] print_deadlock_bug (kernel/locking/lockdep.c:3040) [ 21.272956][ T11] validate_chain (kernel/locking/lockdep.c:3894) [ 21.273100][ T11] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 21.273247][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 21.273387][ T11] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 21.273497][ T11] __lock_acquire (kernel/locking/lockdep.c:5226) [ 21.273637][ T11] ? mark_lock_irq (kernel/locking/lockdep.c:2671 kernel/locking/lockdep.c:4186 kernel/locking/lockdep.c:4283) [ 21.273779][ T11] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5851) [ 21.273919][ T11] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 21.274091][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 21.274236][ T11] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 37)) [ 21.274377][ T11] ? lock_acquire (kernel/locking/lockdep.c:5822) [ 21.274515][ T11] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 21.274688][ T11] down_read (./arch/x86/include/asm/preempt.h:79 kernel/locking/rwsem.c:1246 kernel/locking/rwsem.c:1261 kernel/locking/rwsem.c:1526) [ 21.274796][ T11] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 21.274973][ T11] ? __pfx_down_read (kernel/locking/rwsem.c:1522) [ 21.275116][ T11] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 21.275257][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 21.275397][ T11] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 21.275521][ T11] blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 21.275683][ T11] netdev_lower_state_changed (net/core/dev.c:8709 (discriminator 11)) [ 21.275825][ T11] ? __pfx_netdev_lower_state_changed (net/core/dev.c:8709) [ 21.275997][ T11] ? __pfx_netdev_has_upper_dev (net/core/dev.c:7170) [ 21.276141][ T11] __bond_release_one (drivers/net/bonding/bond_main.c:1890 ./include/net/bonding.h:391 ./include/net/bonding.h:382 ./include/net/bonding.h:570 drivers/net/bonding/bond_main.c:2516) [ 21.276288][ T11] ? __lock_release (kernel/locking/lockdep.c:5525) [ 21.276429][ T11] ? __try_to_del_timer_sync (kernel/time/timer.c:1498) [ 21.276574][ T11] ? __pfx___bond_release_one (drivers/net/bonding/bond_main.c:2492) [ 21.276716][ T11] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 21.276854][ T11] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 21.276960][ T11] ? mark_held_locks (kernel/locking/lockdep.c:4321) [ 21.277101][ T11] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 21.277283][ T11] ? __try_to_del_timer_sync (kernel/time/timer.c:1498) [ 21.277424][ T11] ? __pfx___try_to_del_timer_sync (kernel/time/timer.c:1498) [ 21.277598][ T11] ? mark_held_locks (kernel/locking/lockdep.c:4321) [ 21.277737][ T11] bond_slave_netdev_event (drivers/net/bonding/bond_main.c:4034) [ 21.277881][ T11] ? ipmr_device_event (net/ipv4/ipmr.c:1781) [ 21.278021][ T11] notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) [ 21.278163][ T11] blocking_notifier_call_chain (kernel/notifier.c:381 kernel/notifier.c:368) [ 21.278301][ T11] unregister_netdevice_many_notify (net/core/dev.c:11575) [ 21.278479][ T11] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11516) [ 21.278654][ T11] ? default_device_exit_batch (net/core/dev.c:12109) [ 21.278796][ T11] ? rtnl_is_locked (net/core/rtnetlink.c:163) [ 21.278937][ T11] ? unregister_netdevice_queue (net/core/dev.c:11501) [ 21.279112][ T11] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11500) [ 21.279298][ T11] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11500) [ 21.279478][ T11] default_device_exit_batch (net/core/dev.c:12123) [ 21.279632][ T11] ? __pfx_default_device_exit_batch (net/core/dev.c:12098) [ 21.279803][ T11] ? 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.h:47 kernel/locking/mutex.c:66) [ 21.279953][ T11] ? nexthop_net_exit_batch_rtnl (net/ipv4/nexthop.c:585 net/ipv4/nexthop.c:2158 net/ipv4/nexthop.c:2666 net/ipv4/nexthop.c:4010) [ 21.280128][ T11] cleanup_net (net/core/net_namespace.c:647 (discriminator 3)) [ 21.280268][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 21.280405][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:592) [ 21.280543][ T11] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 37)) [ 21.280685][ T11] ? lock_acquire (kernel/locking/lockdep.c:5822) [ 21.280824][ T11] ? process_one_work (kernel/workqueue.c:3205) [ 21.280971][ T11] process_one_work (kernel/workqueue.c:3229) [ 21.281113][ T11] ? __pfx___lock_release (kernel/locking/lockdep.c:5501) [ 21.281252][ T11] ? __pfx_process_one_work (kernel/workqueue.c:3131) [ 21.281390][ T11] ? assign_work (kernel/workqueue.c:1200) [ 21.281530][ T11] worker_thread (kernel/workqueue.c:3304 kernel/workqueue.c:3391) [ 21.281671][ T11] ? __pfx_worker_thread (kernel/workqueue.c:3337) [ 21.281809][ T11] kthread (kernel/kthread.c:389) [ 21.281918][ T11] ? __pfx_kthread (kernel/kthread.c:342) [ 21.282057][ T11] ret_from_fork (arch/x86/kernel/process.c:147) [ 21.282194][ T11] ? __pfx_kthread (kernel/kthread.c:342) Finger prints: print_deadlock_bug:validate_chain:__lock_acquire:down_read:blocking_notifier_call_chain