ip6_tunnel: ip6tnl1 xmit: Local address not yet configured! ip6_tunnel: ip6tnl1 xmit: Local address not yet configured! INFO: task kworker/dying:23 blocked for more than 140 seconds. Not tainted 4.9.184+ #5 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/dying D26968 23 2 0x80000000 0000000000000087 ffff8801da73af80 0000000000000000 ffff8801db621000 ffffffff83031180 ffff8801db621018 ffff8801d9c3f8c0 ffffffff8280a5ce 0000000000000246 ffff8801da73af80 0000000000000000 ffff8801db6218f0 Call Trace: [<00000000eb7dc6ba>] schedule+0x92/0x1c0 kernel/sched/core.c:3546 [<000000002721aacc>] __rt_mutex_slowlock+0x99/0x290 kernel/locking/rtmutex.c:1221 [<000000000276feb5>] rt_mutex_slowlock+0x199/0x4c0 kernel/locking/rtmutex.c:1293 [<00000000f64f18db>] rt_mutex_fastlock kernel/locking/rtmutex.c:1439 [inline] [<00000000f64f18db>] rt_mutex_lock+0x2d/0x40 kernel/locking/rtmutex.c:1499 [<0000000084172ea5>] process_notifier drivers/misc/uid_sys_stats.c:636 [inline] [<0000000084172ea5>] process_notifier+0x96/0x670 drivers/misc/uid_sys_stats.c:625 [<0000000071b52a34>] notifier_call_chain+0xb4/0x1d0 kernel/notifier.c:93 [<00000000350c9103>] __blocking_notifier_call_chain kernel/notifier.c:317 [inline] [<00000000350c9103>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] [<00000000350c9103>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] [<00000000350c9103>] blocking_notifier_call_chain+0x80/0xa0 kernel/notifier.c:325 [<000000002cfe52a3>] profile_task_exit+0x1f/0x30 kernel/profile.c:140 [<0000000010e3e577>] do_exit+0x90/0x2aa0 kernel/exit.c:744 [<0000000041a0b3d2>] kthread+0x22b/0x310 kernel/kthread.c:214 [<000000008e1d6825>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:375 Showing all locks held in the system: 1 lock held by kworker/dying/23: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 2 locks held by khungtaskd/24: #0: (rcu_read_lock){......}, at: [<00000000bb3b68f2>] check_hung_uninterruptible_tasks kernel/hung_task.c:169 [inline] #0: (rcu_read_lock){......}, at: [<00000000bb3b68f2>] watchdog+0x14b/0xaf0 kernel/hung_task.c:263 #1: (tasklist_lock){.+.+..}, at: [<0000000008aeb64b>] debug_show_all_locks+0x7f/0x21f kernel/locking/lockdep.c:4336 3 locks held by rs:main Q:Reg/1908: #0: (&f->f_pos_lock){+.+.+.}, at: [<00000000f92b9d85>] __fdget_pos+0xa8/0xd0 fs/file.c:782 #1: (sb_writers#4){.+.+.+}, at: [<0000000046f77838>] file_start_write include/linux/fs.h:2646 [inline] #1: (sb_writers#4){.+.+.+}, at: [<0000000046f77838>] vfs_write+0x3e9/0x520 fs/read_write.c:558 #2: (&sb->s_type->i_mutex_key#9){++++++}, at: [<00000000a6b61a08>] inode_lock include/linux/fs.h:771 [inline] #2: (&sb->s_type->i_mutex_key#9){++++++}, at: [<00000000a6b61a08>] __generic_file_fsync+0xcd/0x1c0 fs/libfs.c:978 1 lock held by rsyslogd/1910: #0: (&f->f_pos_lock){+.+.+.}, at: [<00000000f92b9d85>] __fdget_pos+0xa8/0xd0 fs/file.c:782 2 locks held by getty/2038: #0: (&tty->ldisc_sem){++++++}, at: [<00000000e8aa8bfd>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377 #1: (&ldata->atomic_read_lock){+.+.+.}, at: [<0000000024af67a8>] n_tty_read+0x1fe/0x1820 drivers/tty/n_tty.c:2156 1 lock held by syz-executor.0/2114: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by kworker/dying/3366: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.3/11430: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 2 locks held by kworker/u4:12/12712: #0: ("events_unbound"){.+.+.+}, at: [<00000000ce861197>] process_one_work+0x790/0x1600 kernel/workqueue.c:2107 #1: ((&sub_info->work)){+.+.+.}, at: [<000000003dfd35b5>] process_one_work+0x7ce/0x1600 kernel/workqueue.c:2111 1 lock held by syz-executor.4/13518: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.2/18218: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.5/19116: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.1/19123: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.2/20136: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.2/20143: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.2/20166: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.1/20168: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.1/20172: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.1/20176: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.4/20170: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.4/20177: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.4/20180: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by blkid/20173: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.5/20174: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.5/20178: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.0/20179: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.0/20182: #0: (key_types_sem){.+.+.+}, at: [<00000000c9bd1ee1>] key_type_lookup+0x1d/0xd0 security/keys/key.c:693 1 lock held by syz-executor.0/20187: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.3/20181: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.3/20185: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.3/20186: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.0/20183: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by kworker/u4:12/20184: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000dc4c1107>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.184+ #5 ffff8801d98d7cc8 ffffffff81b580a1 0000000000000001 0000000000000000 0000000000000001 ffffffff81099a01 dffffc0000000000 ffff8801d98d7d00 ffffffff81b6333c 0000000000000001 0000000000000000 0000000000000001 Call Trace: [<000000004e6aa24f>] __dump_stack lib/dump_stack.c:15 [inline] [<000000004e6aa24f>] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [<0000000008fbbb97>] nmi_cpu_backtrace.cold+0x47/0x87 lib/nmi_backtrace.c:99 [<000000007ae22f27>] nmi_trigger_cpumask_backtrace+0x124/0x155 lib/nmi_backtrace.c:60 [<00000000f4a3af0f>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37 [<00000000689b4989>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline] [<00000000689b4989>] check_hung_task kernel/hung_task.c:126 [inline] [<00000000689b4989>] check_hung_uninterruptible_tasks kernel/hung_task.c:183 [inline] [<00000000689b4989>] watchdog+0x670/0xaf0 kernel/hung_task.c:263 [<00000000a53b2791>] kthread+0x278/0x310 kernel/kthread.c:211 [<000000008e1d6825>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:375 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at pc 0xffffffff82819721