====================================== | [ 15.238149][ T70] #3: ffffffff8ea01dc8 (rtnl_mutex){+.+.}-{4:4}, at: default_device_exit_batch (net/core/dev.c:12109) | [ 15.238427][ T70] #4: ffffffff8e9f0a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) | [ 15.238701][ T70] | [ 15.238701][ T70] stack backtrace: [ 15.239109][ T70] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.239280][ T70] Workqueue: netns cleanup_net [ 15.239425][ T70] Call Trace: [ 15.239534][ T70] [ 15.239608][ T70] dump_stack_lvl (lib/dump_stack.c:123) [ 15.239749][ T70] print_deadlock_bug (kernel/locking/lockdep.c:3040) [ 15.239888][ T70] validate_chain (kernel/locking/lockdep.c:3894) [ 15.240030][ T70] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 15.240173][ T70] ? 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) [ 15.240316][ T70] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 15.240424][ T70] __lock_acquire (kernel/locking/lockdep.c:5226) [ 15.240566][ T70] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5851) [ 15.240702][ T70] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 15.240876][ T70] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 15.241016][ T70] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 37)) [ 15.241153][ T70] ? lock_acquire (kernel/locking/lockdep.c:5822) [ 15.241290][ T70] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 15.241464][ T70] down_read (./arch/x86/include/asm/preempt.h:79 kernel/locking/rwsem.c:1246 kernel/locking/rwsem.c:1261 kernel/locking/rwsem.c:1526) [ 15.241572][ T70] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 15.241742][ T70] ? __pfx_down_read (kernel/locking/rwsem.c:1522) [ 15.241880][ T70] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 15.242020][ T70] ? 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) [ 15.242156][ T70] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 15.242261][ T70] blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368) [ 15.242401][ T70] netdev_lower_state_changed (net/core/dev.c:8709 (discriminator 11)) [ 15.242538][ T70] ? __pfx_netdev_lower_state_changed (net/core/dev.c:8709) [ 15.242707][ T70] ? __pfx_netdev_has_upper_dev (net/core/dev.c:7170) [ 15.242846][ T70] __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) [ 15.242987][ T70] ? __lock_release (kernel/locking/lockdep.c:5525) [ 15.243126][ T70] ? __try_to_del_timer_sync (kernel/time/timer.c:1498) [ 15.243267][ T70] ? __pfx___bond_release_one (drivers/net/bonding/bond_main.c:2492) [ 15.243403][ T70] ? 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) [ 15.243544][ T70] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3)) [ 15.243650][ T70] ? mark_held_locks (kernel/locking/lockdep.c:4321) [ 15.243787][ T70] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 15.243957][ T70] ? __try_to_del_timer_sync (kernel/time/timer.c:1498) [ 15.244095][ T70] ? __pfx___try_to_del_timer_sync (kernel/time/timer.c:1498) [ 15.244270][ T70] ? mark_held_locks (kernel/locking/lockdep.c:4321) [ 15.244410][ T70] bond_slave_netdev_event (drivers/net/bonding/bond_main.c:4034) [ 15.244549][ T70] ? ipmr_device_event (net/ipv4/ipmr.c:1781) [ 15.244687][ T70] notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) [ 15.244836][ T70] blocking_notifier_call_chain (kernel/notifier.c:381 kernel/notifier.c:368) [ 15.244973][ T70] unregister_netdevice_many_notify (net/core/dev.c:11575) [ 15.245147][ T70] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11516) [ 15.245322][ T70] ? default_device_exit_batch (net/core/dev.c:12109) [ 15.245464][ T70] ? rtnl_is_locked (net/core/rtnetlink.c:163) [ 15.245604][ T70] ? unregister_netdevice_queue (net/core/dev.c:11501) [ 15.245776][ T70] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11500) [ 15.245946][ T70] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11500) [ 15.246117][ T70] default_device_exit_batch (net/core/dev.c:12123) [ 15.246257][ T70] ? __pfx_default_device_exit_batch (net/core/dev.c:12098) [ 15.246429][ T70] ? 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) [ 15.246568][ T70] ? 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) [ 15.246742][ T70] cleanup_net (net/core/net_namespace.c:647 (discriminator 3)) [ 15.246881][ T70] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814) [ 15.247020][ T70] ? __pfx_cleanup_net (net/core/net_namespace.c:592) [ 15.247157][ T70] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 37)) [ 15.247298][ T70] ? lock_acquire (kernel/locking/lockdep.c:5822) [ 15.247436][ T70] ? process_one_work (kernel/workqueue.c:3205) [ 15.247574][ T70] process_one_work (kernel/workqueue.c:3229) [ 15.247714][ T70] ? __pfx___lock_release (kernel/locking/lockdep.c:5501) [ 15.247857][ T70] ? __pfx_process_one_work (kernel/workqueue.c:3131) [ 15.248003][ T70] ? assign_work (kernel/workqueue.c:1200) [ 15.248139][ T70] worker_thread (kernel/workqueue.c:3304 kernel/workqueue.c:3391) [ 15.248280][ T70] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) [ 15.248453][ T70] ? __pfx_worker_thread (kernel/workqueue.c:3337) [ 15.248590][ T70] ? __pfx_worker_thread (kernel/workqueue.c:3337) [ 15.248726][ T70] kthread (kernel/kthread.c:389) [ 15.248831][ T70] ? __pfx_kthread (kernel/kthread.c:342) [ 15.248971][ T70] ret_from_fork (arch/x86/kernel/process.c:147) [ 15.249108][ T70] ? __pfx_kthread (kernel/kthread.c:342) Finger prints: print_deadlock_bug:validate_chain:__lock_acquire:down_read:blocking_notifier_call_chain