INFO: task kworker/1:0:20 blocked for more than 143 seconds. Not tainted 5.13.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:0 state:D stack:21992 pid: 20 ppid: 2 flags:0x00004000 Workqueue: events ovs_dp_masks_rebalance Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0xc07/0x11f0 kernel/sched/core.c:5940 schedule+0x14b/0x210 kernel/sched/core.c:6019 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6078 __mutex_lock_common+0x116f/0x3770 kernel/locking/mutex.c:1036 __mutex_lock kernel/locking/mutex.c:1104 [inline] mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:1119 ovs_lock net/openvswitch/datapath.c:106 [inline] ovs_dp_masks_rebalance+0x29/0xe0 net/openvswitch/datapath.c:2386 process_one_work+0x833/0x10c0 kernel/workqueue.c:2276 worker_thread+0xac1/0x1320 kernel/workqueue.c:2422 kthread+0x453/0x480 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/1:7:26799 blocked for more than 144 seconds. Not tainted 5.13.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:7 state:D stack:23288 pid:26799 ppid: 2 flags:0x00004000 Workqueue: events ovs_dp_masks_rebalance Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0xc07/0x11f0 kernel/sched/core.c:5940 schedule+0x14b/0x210 kernel/sched/core.c:6019 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6078 __mutex_lock_common+0x116f/0x3770 kernel/locking/mutex.c:1036 __mutex_lock kernel/locking/mutex.c:1104 [inline] mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:1119 ovs_lock net/openvswitch/datapath.c:106 [inline] ovs_dp_masks_rebalance+0x29/0xe0 net/openvswitch/datapath.c:2386 process_one_work+0x833/0x10c0 kernel/workqueue.c:2276 worker_thread+0xac1/0x1320 kernel/workqueue.c:2422 kthread+0x453/0x480 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/1:8:22920 blocked for more than 144 seconds. Not tainted 5.13.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:8 state:D stack:24792 pid:22920 ppid: 2 flags:0x00004000 Workqueue: events ovs_dp_masks_rebalance Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0xc07/0x11f0 kernel/sched/core.c:5940 schedule+0x14b/0x210 kernel/sched/core.c:6019 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6078 __mutex_lock_common+0x116f/0x3770 kernel/locking/mutex.c:1036 __mutex_lock kernel/locking/mutex.c:1104 [inline] mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:1119 ovs_lock net/openvswitch/datapath.c:106 [inline] ovs_dp_masks_rebalance+0x29/0xe0 net/openvswitch/datapath.c:2386 process_one_work+0x833/0x10c0 kernel/workqueue.c:2276 worker_thread+0xac1/0x1320 kernel/workqueue.c:2422 kthread+0x453/0x480 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/1:10:22924 blocked for more than 145 seconds. Not tainted 5.13.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:10 state:D stack:23792 pid:22924 ppid: 2 flags:0x00004000 Workqueue: events ovs_dp_masks_rebalance Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0xc07/0x11f0 kernel/sched/core.c:5940 schedule+0x14b/0x210 kernel/sched/core.c:6019 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6078 __mutex_lock_common+0x116f/0x3770 kernel/locking/mutex.c:1036 __mutex_lock kernel/locking/mutex.c:1104 [inline] mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:1119 ovs_lock net/openvswitch/datapath.c:106 [inline] ovs_dp_masks_rebalance+0x29/0xe0 net/openvswitch/datapath.c:2386 process_one_work+0x833/0x10c0 kernel/workqueue.c:2276 worker_thread+0xac1/0x1320 kernel/workqueue.c:2422 kthread+0x453/0x480 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/1:11:22926 blocked for more than 146 seconds. Not tainted 5.13.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:11 state:D stack:24664 pid:22926 ppid: 2 flags:0x00004000 Workqueue: events ovs_dp_masks_rebalance Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0xc07/0x11f0 kernel/sched/core.c:5940 schedule+0x14b/0x210 kernel/sched/core.c:6019 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6078 __mutex_lock_common+0x116f/0x3770 kernel/locking/mutex.c:1036 __mutex_lock kernel/locking/mutex.c:1104 [inline] mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:1119 ovs_lock net/openvswitch/datapath.c:106 [inline] ovs_dp_masks_rebalance+0x29/0xe0 net/openvswitch/datapath.c:2386 process_one_work+0x833/0x10c0 kernel/workqueue.c:2276 worker_thread+0xac1/0x1320 kernel/workqueue.c:2422 kthread+0x453/0x480 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/1:12:22929 blocked for more than 147 seconds. Not tainted 5.13.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:12 state:D stack:24664 pid:22929 ppid: 2 flags:0x00004000 Workqueue: events ovs_dp_masks_rebalance Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0xc07/0x11f0 kernel/sched/core.c:5940 schedule+0x14b/0x210 kernel/sched/core.c:6019 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6078 __mutex_lock_common+0x116f/0x3770 kernel/locking/mutex.c:1036 __mutex_lock kernel/locking/mutex.c:1104 [inline] mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:1119 ovs_lock net/openvswitch/datapath.c:106 [inline] ovs_dp_masks_rebalance+0x29/0xe0 net/openvswitch/datapath.c:2386 process_one_work+0x833/0x10c0 kernel/workqueue.c:2276 worker_thread+0xac1/0x1320 kernel/workqueue.c:2422 kthread+0x453/0x480 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/1:13:22930 blocked for more than 147 seconds. Not tainted 5.13.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:13 state:D stack:26616 pid:22930 ppid: 2 flags:0x00004000 Workqueue: events ovs_dp_masks_rebalance Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0xc07/0x11f0 kernel/sched/core.c:5940 schedule+0x14b/0x210 kernel/sched/core.c:6019 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6078 __mutex_lock_common+0x116f/0x3770 kernel/locking/mutex.c:1036 __mutex_lock kernel/locking/mutex.c:1104 [inline] mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:1119 ovs_lock net/openvswitch/datapath.c:106 [inline] ovs_dp_masks_rebalance+0x29/0xe0 net/openvswitch/datapath.c:2386 process_one_work+0x833/0x10c0 kernel/workqueue.c:2276 worker_thread+0xac1/0x1320 kernel/workqueue.c:2422 kthread+0x453/0x480 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/1:19:22937 blocked for more than 148 seconds. Not tainted 5.13.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:19 state:D stack:25624 pid:22937 ppid: 2 flags:0x00004000 Workqueue: events ovs_dp_masks_rebalance Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0xc07/0x11f0 kernel/sched/core.c:5940 schedule+0x14b/0x210 kernel/sched/core.c:6019 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6078 __mutex_lock_common+0x116f/0x3770 kernel/locking/mutex.c:1036 __mutex_lock kernel/locking/mutex.c:1104 [inline] mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:1119 ovs_lock net/openvswitch/datapath.c:106 [inline] ovs_dp_masks_rebalance+0x29/0xe0 net/openvswitch/datapath.c:2386 process_one_work+0x833/0x10c0 kernel/workqueue.c:2276 worker_thread+0xac1/0x1320 kernel/workqueue.c:2422 kthread+0x453/0x480 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/0:6:22967 blocked for more than 149 seconds. Not tainted 5.13.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:6 state:D stack:22992 pid:22967 ppid: 2 flags:0x00004000 Workqueue: events ovs_dp_masks_rebalance Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0xc07/0x11f0 kernel/sched/core.c:5940 schedule+0x14b/0x210 kernel/sched/core.c:6019 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6078 __mutex_lock_common+0x116f/0x3770 kernel/locking/mutex.c:1036 __mutex_lock kernel/locking/mutex.c:1104 [inline] mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:1119 ovs_lock net/openvswitch/datapath.c:106 [inline] ovs_dp_masks_rebalance+0x29/0xe0 net/openvswitch/datapath.c:2386 process_one_work+0x833/0x10c0 kernel/workqueue.c:2276 worker_thread+0xac1/0x1320 kernel/workqueue.c:2422 kthread+0x453/0x480 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/0:9:22969 blocked for more than 150 seconds. Not tainted 5.13.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:9 state:D stack:24792 pid:22969 ppid: 2 flags:0x00004000 Workqueue: events ovs_dp_masks_rebalance Call Trace: context_switch kernel/sched/core.c:4683 [inline] __schedule+0xc07/0x11f0 kernel/sched/core.c:5940 schedule+0x14b/0x210 kernel/sched/core.c:6019 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6078 __mutex_lock_common+0x116f/0x3770 kernel/locking/mutex.c:1036 __mutex_lock kernel/locking/mutex.c:1104 [inline] mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:1119 ovs_lock net/openvswitch/datapath.c:106 [inline] ovs_dp_masks_rebalance+0x29/0xe0 net/openvswitch/datapath.c:2386 process_one_work+0x833/0x10c0 kernel/workqueue.c:2276 worker_thread+0xac1/0x1320 kernel/workqueue.c:2422 kthread+0x453/0x480 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Showing all locks held in the system: 3 locks held by kworker/1:0/20: #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7aa/0x10c0 kernel/workqueue.c:2249 #1: ffffc90000da7d20 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_one_work+0x7e8/0x10c0 kernel/workqueue.c:2251 #2: ffffffff8e221108 (ovs_mutex){+.+.}-{3:3}, at: ovs_lock net/openvswitch/datapath.c:106 [inline] #2: ffffffff8e221108 (ovs_mutex){+.+.}-{3:3}, at: ovs_dp_masks_rebalance+0x29/0xe0 net/openvswitch/datapath.c:2386 1 lock held by khungtaskd/1622: #0: ffffffff8cf179c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 arch/x86/pci/mmconfig_64.c:151 1 lock held by systemd-udevd/4867: 1 lock held by in:imklog/8128: #0: ffff888013ba85f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x24e/0x2f0 fs/file.c:974 2 locks held by agetty/8148: #0: ffff88802075e098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:267 #1: ffffc9000109c2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6c3/0x1cf0 drivers/tty/n_tty.c:2179 1 lock held by syz-executor.0/8449: #0: ffff8880b9b35498 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:460 [inline] #0: ffff8880b9b35498 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1307 [inline] #0: ffff8880b9b35498 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1610 [inline] #0: ffff8880b9b35498 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x150/0x11f0 kernel/sched/core.c:5854 3 locks held by kworker/1:7/26799: #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7aa/0x10c0 kernel/workqueue.c:2249 #1: ffffc90009897d20 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_one_work+0x7e8/0x10c0 kernel/workqueue.c:2251 #2: ffffffff8e221108 (ovs_mutex){+.+.}-{3:3}, at: ovs_lock net/openvswitch/datapath.c:106 [inline] #2: ffffffff8e221108 (ovs_mutex){+.+.}-{3:3}, at: ovs_dp_masks_rebalance+0x29/0xe0 net/openvswitch/datapath.c:2386 6 locks held by kworker/u4:1/32306: #0: ffff88814438b138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x7aa/0x10c0 kernel/workqueue.c:2249 #1: ffffc9001a597d20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7e8/0x10c0 kernel/workqueue.c:2251 #2: ffffffff8df300f0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xf0/0xc60 net/core/net_namespace.c:557 #3: ffffffff8e221108 (ovs_mutex){+.+.}-{3:3}, at: ovs_lock net/openvswitch/datapath.c:106 [inline] #3: ffffffff8e221108 (ovs_mutex){+.+.}-{3:3}, at: ovs_exit_net+0xdd/0x830 net/openvswitch/datapath.c:2534 #4: ffffffff8df3bf08 (rtnl_mutex){+.+.}-{3:3}, at: internal_dev_destroy+0x6e/0xf0 net/openvswitch/vport-internal_dev.c:183 #5: ffffffff8cf1c168 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline] #5: ffffffff8cf1c168 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x255/0x6b0 kernel/rcu/tree_exp.h:837 3 locks held by kworker/1:8/22920: #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7aa/0x10c0 kernel/workqueue.c:2249 #1: ffffc900099cfd20 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_one_work+0x7e8/0x10c0 kernel/workqueue.c:2251 #2: ffffffff8e221108 (ovs_mutex){+.+.}-{3:3}, at: ovs_lock net/openvswitch/datapath.c:106 [inline] #2: ffffffff8e221108 (ovs_mutex){+.+.}-{3:3}, at: ovs_dp_masks_rebalance+0x29/0xe0 net/openvswitch/datapath.c:2386 3 locks held by kworker/1:10/22924: #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7aa/0x10c0 kernel/workqueue.c:2249 #1: ffffc900099dfd20 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_one_work+0x7e8/0x10c0 kernel/workqueue.c:2251 #2: ffffffff8e221108 (ovs_mutex){+.+.}-{3:3}, at: ovs_lock net/openvswitch/datapath.c:106 [inline] #2: ffffffff8e221108 (ovs_mutex){+.+.}-{3:3}, at: ovs_dp_masks_rebalance+0x29/0xe0 net/openvswitch/datapath.c:2386 3 locks held by kworker/1:11/22926: #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7aa/0x10c0 kernel/workqueue.c:2249 #1: ffffc90009bb7d20 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_one_work+0x7e8/0x10c0 kernel/workqueue.c:2251 #2: ffffffff8e221108 (ovs_mutex){+.+.}-{3:3}, at: ovs_lock net/openvswitch/datapath.c:106 [inline] #2: ffffffff8e221108 (ovs_mutex){+.+.}-{3:3}, at: ovs_dp_masks_rebalance+0x29/0xe0 net/openvswitch/datapath.c:2386 3 locks held by kworker/1:12/22929: #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7aa/0x10c0 kernel/workqueue.c:2249 #1: ffffc90009bc7d20 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_one_work+0x7e8/0x10c0 kernel/workqueue.c:2251 #2: ffffffff8e221108 (ovs_mutex){+.+.}-{3:3}, at: ovs_lock net/openvswitch/datapath.c:106 [inline] #2: ffffffff8e221108 (ovs_mutex){+.+.}-{3:3}, at: ovs_dp_masks_rebalance+0x29/0xe0 net/openvswitch/datapath.c:2386 3 locks held by kworker/1:13/22930: #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7aa/0x10c0 kernel/workqueue.c:2249 #1: ffffc9000997fd20 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_one_work+0x7e8/0x10c0 kernel/workqueue.c:2251 #2: ffffffff8e221108 (ovs_mutex){+.+.}-{3:3}, at: ovs_lock net/openvswitch/datapath.c:106 [inline] #2: ffffffff8e221108 (ovs_mutex){+.+.}-{3:3}, at: ovs_dp_masks_rebalance+0x29/0xe0 net/openvswitch/datapath.c:2386 3 locks held by kworker/1:14/22931: #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7aa/0x10c0 kernel/workqueue.c:2249 #1: ffffc90009be7d20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7e8/0x10c0 kernel/workqueue.c:2251 #2: ffffffff8cf1c168 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline] #2: ffffffff8cf1c168 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x325/0x6b0 kernel/rcu/tree_exp.h:837 3 locks held by kworker/1:16/22934: #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7aa/0x10c0 kernel/workqueue.c:2249 #1: ffffc90009bf7d20 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_one_work+0x7e8/0x10c0 kernel/workqueue.c:2251 #2: ffffffff8e221108 (ovs_mutex){+.+.}-{3:3}, at: ovs_lock net/openvswitch/datapath.c:106 [inline] #2: ffffffff8e221108 (ovs_mutex){+.+.}-{3:3}, at: ovs_dp_masks_rebalance+0x29/0xe0 net/openvswitch/datapath.c:2386 3 locks held by kworker/1:19/22937: #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7aa/0x10c0 kernel/workqueue.c:2249 #1: ffffc90009c37d20 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_one_work+0x7e8/0x10c0 kernel/workqueue.c:2251 #2: ffffffff8e221108 (ovs_mutex){+.+.}-{3:3}, at: ovs_lock net/openvswitch/datapath.c:106 [inline] #2: ffffffff8e221108 (ovs_mutex){+.+.}-{3:3}, at: ovs_dp_masks_rebalance+0x29/0xe0 net/openvswitch/datapath.c:2386 3 locks held by kworker/0:4/22966: #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7aa/0x10c0 kernel/workqueue.c:2249 #1: ffffc90009df7d20 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_one_work+0x7e8/0x10c0 kernel/workqueue.c:2251 #2: ffffffff8e221108 (ovs_mutex){+.+.}-{3:3}, at: ovs_lock net/openvswitch/datapath.c:106 [inline] #2: ffffffff8e221108 (ovs_mutex){+.+.}-{3:3}, at: ovs_dp_masks_rebalance+0x29/0xe0 net/openvswitch/datapath.c:2386 3 locks held by kworker/0:6/22967: #0: ffff888011864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7aa/0x10c0 kernel/workqueue.c:2249 #1: ffffc90009e17d20 ((work_completion)(&(&ovs_net->masks_rebalance)->work)){+.+.}-{0:0}, at: process_one_work+0x7e8/0x10c0 kernel/workqueue.c:2251