====================================== | [ 16.657323][ T319] #3: ffffffff87601dc8 (rtnl_mutex){+.+.}-{4:4}, at: default_device_exit_batch (net/core/dev.c:12103) | [ 16.657646][ T319] #4: ffffffff875f0a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) | [ 16.657984][ T319] | [ 16.657984][ T319] stack backtrace: [ 16.658451][ T319] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.658658][ T319] Workqueue: netns cleanup_net [ 16.658839][ T319] Call Trace: [ 16.658967][ T319] [ 16.659055][ T319] dump_stack_lvl (lib/dump_stack.c:123) [ 16.659228][ T319] print_deadlock_bug (kernel/locking/lockdep.c:3040) [ 16.659397][ T319] validate_chain (kernel/locking/lockdep.c:3894) [ 16.659563][ T319] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 16.659743][ T319] ? 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) [ 16.659901][ T319] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 16.660025][ T319] __lock_acquire (kernel/locking/lockdep.c:5226) [ 16.660198][ T319] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5851) [ 16.660357][ T319] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 16.660584][ T319] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 16.660755][ T319] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 37)) [ 16.660910][ T319] ? lock_acquire (kernel/locking/lockdep.c:5822) [ 16.661078][ T319] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 16.661311][ T319] down_read (./arch/x86/include/asm/preempt.h:79 kernel/locking/rwsem.c:1246 kernel/locking/rwsem.c:1261 kernel/locking/rwsem.c:1526) [ 16.661425][ T319] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 16.661643][ T319] ? __pfx_down_read (kernel/locking/rwsem.c:1522) [ 16.661805][ T319] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 16.661966][ T319] ? 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) [ 16.662129][ T319] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 16.662257][ T319] blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 16.662425][ T319] netdev_lower_state_changed (net/core/dev.c:8709 (discriminator 11)) [ 16.662583][ T319] ? __pfx_netdev_lower_state_changed (net/core/dev.c:8709) [ 16.662782][ T319] ? __pfx_netdev_has_upper_dev (net/core/dev.c:7170) [ 16.662947][ T319] __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) [ 16.663107][ T319] ? __lock_release (kernel/locking/lockdep.c:5525) [ 16.663266][ T319] ? __try_to_del_timer_sync (kernel/time/timer.c:1498) [ 16.663430][ T319] ? __pfx___bond_release_one (drivers/net/bonding/bond_main.c:2492) [ 16.663589][ T319] ? 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) [ 16.663751][ T319] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 16.663889][ T319] ? mark_held_locks (kernel/locking/lockdep.c:4321) [ 16.664064][ T319] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 16.664270][ T319] ? __try_to_del_timer_sync (kernel/time/timer.c:1498) [ 16.664419][ T319] ? __pfx___try_to_del_timer_sync (kernel/time/timer.c:1498) [ 16.664634][ T319] ? mark_held_locks (kernel/locking/lockdep.c:4321) [ 16.664793][ T319] bond_slave_netdev_event (drivers/net/bonding/bond_main.c:4034) [ 16.664953][ T319] ? ipmr_device_event (net/ipv4/ipmr.c:1781) [ 16.665131][ T319] notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) [ 16.665295][ T319] blocking_notifier_call_chain (kernel/notifier.c:381 kernel/notifier.c:368) [ 16.665467][ T319] unregister_netdevice_many_notify (net/core/dev.c:11571) [ 16.665683][ T319] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11512) [ 16.665893][ T319] ? default_device_exit_batch (net/core/dev.c:12103) [ 16.666064][ T319] ? rtnl_is_locked (net/core/rtnetlink.c:164) [ 16.666234][ T319] ? unregister_netdevice_queue (net/core/dev.c:11497) [ 16.666442][ T319] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11496) [ 16.666653][ T319] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11496) [ 16.666846][ T319] default_device_exit_batch (net/core/dev.c:12117) [ 16.667001][ T319] ? __pfx_default_device_exit_batch (net/core/dev.c:12092) [ 16.667194][ T319] ? 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) [ 16.667351][ T319] ? 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) [ 16.667564][ T319] cleanup_net (net/core/net_namespace.c:647 (discriminator 3)) [ 16.667738][ T319] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 16.667910][ T319] ? __pfx_cleanup_net (net/core/net_namespace.c:592) [ 16.668070][ T319] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 37)) [ 16.668240][ T319] ? lock_acquire (kernel/locking/lockdep.c:5822) [ 16.668396][ T319] ? process_one_work (kernel/workqueue.c:3205) [ 16.668563][ T319] process_one_work (kernel/workqueue.c:3229) [ 16.668724][ T319] ? __pfx___lock_release (kernel/locking/lockdep.c:5501) [ 16.668885][ T319] ? __pfx_process_one_work (kernel/workqueue.c:3131) [ 16.669053][ T319] ? assign_work (kernel/workqueue.c:1200) [ 16.669213][ T319] worker_thread (kernel/workqueue.c:3304 kernel/workqueue.c:3391) [ 16.669371][ T319] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 16.669567][ T319] ? __pfx_worker_thread (kernel/workqueue.c:3337) [ 16.669747][ T319] ? __pfx_worker_thread (kernel/workqueue.c:3337) [ 16.669914][ T319] kthread (kernel/kthread.c:389) [ 16.670036][ T319] ? __pfx_kthread (kernel/kthread.c:342) [ 16.670204][ T319] ret_from_fork (arch/x86/kernel/process.c:147) [ 16.670379][ T319] ? __pfx_kthread (kernel/kthread.c:342) Finger prints: print_deadlock_bug:validate_chain:__lock_acquire:down_read:blocking_notifier_call_chain