ip6_tunnel:  xmit: Local address not yet configured! ip6_tunnel:  xmit: Local address not yet configured! INFO: task kworker/u4:1:65 blocked for more than 140 seconds. Not tainted 4.14.68+ #4 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u4:1 D27048 65 2 0x80000000 Workqueue: netns cleanup_net Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 schedule_timeout+0x710/0xe60 kernel/time/timer.c:1718 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common+0x3bc/0x4e0 kernel/sched/completion.c:123 _rcu_barrier+0x27b/0x3f0 kernel/rcu/tree.c:3594 cleanup_net+0x4be/0x880 net/core/net_namespace.c:494 process_one_work+0x86e/0x15c0 kernel/workqueue.c:2114 worker_thread+0xdc/0x1000 kernel/workqueue.c:2248 kthread+0x348/0x420 kernel/kthread.c:232 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402 INFO: task kworker/1:3:5717 blocked for more than 140 seconds. Not tainted 4.14.68+ #4 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:3 D26832 5717 2 0x80000000 Workqueue: events bpf_map_free_deferred Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3548 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x521/0x1480 kernel/locking/mutex.c:893 _rcu_barrier+0x5b/0x3f0 kernel/rcu/tree.c:3529 htab_map_free+0x20/0x3f0 kernel/bpf/hashtab.c:1138 process_one_work+0x86e/0x15c0 kernel/workqueue.c:2114 worker_thread+0xdc/0x1000 kernel/workqueue.c:2248 kthread+0x348/0x420 kernel/kthread.c:232 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402 INFO: task kworker/1:4:8076 blocked for more than 140 seconds. Not tainted 4.14.68+ #4 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:4 D29368 8076 2 0x80000000 Workqueue: events bpf_map_free_deferred Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3548 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x521/0x1480 kernel/locking/mutex.c:893 _rcu_barrier+0x5b/0x3f0 kernel/rcu/tree.c:3529 htab_map_free+0x20/0x3f0 kernel/bpf/hashtab.c:1138 process_one_work+0x86e/0x15c0 kernel/workqueue.c:2114 worker_thread+0xdc/0x1000 kernel/workqueue.c:2248 kthread+0x348/0x420 kernel/kthread.c:232 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402 INFO: task syz-executor6:17834 blocked for more than 140 seconds. Not tainted 4.14.68+ #4 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor6 D29432 17834 2069 0x00000004 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:565 [inline] rwsem_down_write_failed+0x390/0x730 kernel/locking/rwsem-xadd.c:594 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:105 __down_write arch/x86/include/asm/rwsem.h:126 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:56 inode_lock include/linux/fs.h:713 [inline] do_last fs/namei.c:3317 [inline] path_openat+0xe43/0x23a0 fs/namei.c:3550 do_filp_open+0x197/0x270 fs/namei.c:3584 do_sys_open+0x2ef/0x580 fs/open.c:1071 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x457099 RSP: 002b:00007f7528404c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f75284056d4 RCX: 0000000000457099 RDX: 0000000000000000 RSI: 000000000000009b RDI: 0000000020000240 RBP: 0000000000930280 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004cbd28 R14: 00000000004c3510 R15: 0000000000000003 INFO: task syz-executor5:17868 blocked for more than 140 seconds. Not tainted 4.14.68+ #4 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D29160 17868 2063 0x00000004 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 schedule_timeout+0x710/0xe60 kernel/time/timer.c:1718 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common+0x3bc/0x4e0 kernel/sched/completion.c:123 flush_work+0x3b8/0x6e0 kernel/workqueue.c:2885 flush_all_backlogs net/core/dev.c:4638 [inline] rollback_registered_many+0x505/0xac0 net/core/dev.c:7168 rollback_registered+0xe0/0x1a0 net/core/dev.c:7224 unregister_netdevice_queue+0x1a1/0x220 net/core/dev.c:8212 unregister_netdevice include/linux/netdevice.h:2427 [inline] ppp_release+0x175/0x1a0 drivers/net/ppp/ppp_generic.c:408 __fput+0x25e/0x6f0 fs/file_table.c:210 task_work_run+0x116/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x12e/0x150 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:267 [inline] do_syscall_64+0x35d/0x4b0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x410c51 RSP: 002b:00007ffc5488e5c0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000410c51 RDX: 0000000000000001 RSI: 0000000000730c48 RDI: 0000000000000003 RBP: 0000000000000000 R08: ffffffffffffffff R09: ffffffffffffffff R10: 00007ffc5488e4f0 R11: 0000000000000293 R12: 0000000000000004 R13: 000000000003aec0 R14: 0000000000000158 R15: badc0ffeebadface INFO: task syz-executor1:17878 blocked for more than 140 seconds. Not tainted 4.14.68+ #4 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor1 D29432 17878 2066 0x00000004 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3548 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x521/0x1480 kernel/locking/mutex.c:893 dev_ioctl+0x281/0xce0 net/core/dev_ioctl.c:421 sock_do_ioctl+0x92/0xb0 net/socket.c:980 sock_ioctl+0x263/0x430 net/socket.c:1070 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x1a0/0x1030 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7e/0xb0 fs/ioctl.c:692 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x457099 RSP: 002b:00007f0698352c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f06983536d4 RCX: 0000000000457099 RDX: 0000000000400200 RSI: 0000000000008912 RDI: 0000000000000005 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004cfd78 R14: 00000000004c5f16 R15: 0000000000000000 INFO: task syz-executor1:17887 blocked for more than 140 seconds. Not tainted 4.14.68+ #4 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor1 D29768 17887 2066 0x00000004 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3548 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x521/0x1480 kernel/locking/mutex.c:893 dev_ioctl+0x281/0xce0 net/core/dev_ioctl.c:421 sock_do_ioctl+0x92/0xb0 net/socket.c:980 sock_ioctl+0x263/0x430 net/socket.c:1070 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x1a0/0x1030 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7e/0xb0 fs/ioctl.c:692 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x457099 RSP: 002b:00007f0698310c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f06983116d4 RCX: 0000000000457099 RDX: 0000000000400200 RSI: 0000000000008912 RDI: 0000000000000005 RBP: 00000000009301e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004cfd78 R14: 00000000004c5f16 R15: 0000000000000002 INFO: task syz-executor7:17891 blocked for more than 140 seconds. Not tainted 4.14.68+ #4 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor7 D29688 17891 2065 0x00000004 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3548 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x521/0x1480 kernel/locking/mutex.c:893 raw_close+0xe/0x30 net/ipv4/raw.c:699 inet_release+0xf7/0x1c0 net/ipv4/af_inet.c:444 __sock_release+0x1d5/0x250 net/socket.c:602 sock_release net/socket.c:622 [inline] SYSC_socketpair net/socket.c:1459 [inline] SyS_socketpair+0x389/0x4d0 net/socket.c:1365 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x457099 RSP: 002b:00007efef2a7bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000035 RAX: ffffffffffffffda RBX: 00007efef2a7c6d4 RCX: 0000000000457099 RDX: 0000000000000004 RSI: 0000000000000003 RDI: 0000000000000002 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020002700 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d6c78 R14: 00000000004c9ee3 R15: 0000000000000000 INFO: task syz-executor7:17893 blocked for more than 140 seconds. Not tainted 4.14.68+ #4 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor7 D28824 17893 2065 0x00000004 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3548 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x521/0x1480 kernel/locking/mutex.c:893 raw_close+0xe/0x30 net/ipv4/raw.c:699 inet_release+0xf7/0x1c0 net/ipv4/af_inet.c:444 __sock_release+0x1d5/0x250 net/socket.c:602 sock_release net/socket.c:622 [inline] SYSC_socketpair net/socket.c:1459 [inline] SyS_socketpair+0x389/0x4d0 net/socket.c:1365 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x457099 RSP: 002b:00007efef2a39c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000035 RAX: ffffffffffffffda RBX: 00007efef2a3a6d4 RCX: 0000000000457099 RDX: 0000000000000004 RSI: 0000000000000003 RDI: 0000000000000002 RBP: 00000000009301e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020002700 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d6c78 R14: 00000000004c9ee3 R15: 0000000000000002 Showing all locks held in the system: 1 lock held by khungtaskd/23: #0: (tasklist_lock){.+.?}, at: [] debug_show_all_locks+0x74/0x20f kernel/locking/lockdep.c:4541 3 locks held by kworker/u4:1/65: #0: ("%s""netns"){+.+.}, at: [] process_one_work+0x787/0x15c0 kernel/workqueue.c:2085 #1: (net_cleanup_work){+.+.}, at: [] process_one_work+0x7bf/0x15c0 kernel/workqueue.c:2089 #2: (rcu_preempt_state.barrier_mutex){+.+.}, at: [] _rcu_barrier+0x5b/0x3f0 kernel/rcu/tree.c:3529 2 locks held by getty/1980: #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x20/0x80 drivers/tty/tty_ldisc.c:275 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1ff/0x15e0 drivers/tty/n_tty.c:2142 3 locks held by kworker/1:3/5717: #0: ("events"){+.+.}, at: [] process_one_work+0x787/0x15c0 kernel/workqueue.c:2085 #1: ((&map->work)){+.+.}, at: [] process_one_work+0x7bf/0x15c0 kernel/workqueue.c:2089 #2: (rcu_preempt_state.barrier_mutex){+.+.}, at: [] _rcu_barrier+0x5b/0x3f0 kernel/rcu/tree.c:3529 3 locks held by kworker/1:4/8076: #0: ("events"){+.+.}, at: [] process_one_work+0x787/0x15c0 kernel/workqueue.c:2085 #1: ((&map->work)){+.+.}, at: [] process_one_work+0x7bf/0x15c0 kernel/workqueue.c:2089 #2: (rcu_preempt_state.barrier_mutex){+.+.}, at: [] _rcu_barrier+0x5b/0x3f0 kernel/rcu/tree.c:3529 2 locks held by syz-executor6/17834: #0: (sb_writers#4){.+.+}, at: [] sb_start_write include/linux/fs.h:1543 [inline] #0: (sb_writers#4){.+.+}, at: [] mnt_want_write+0x3a/0xa0 fs/namespace.c:387 #1: (&type->i_mutex_dir_key){++++}, at: [] inode_lock include/linux/fs.h:713 [inline] #1: (&type->i_mutex_dir_key){++++}, at: [] do_last fs/namei.c:3317 [inline] #1: (&type->i_mutex_dir_key){++++}, at: [] path_openat+0xe43/0x23a0 fs/namei.c:3550 2 locks held by syz-executor5/17868: #0: (rtnl_mutex){+.+.}, at: [] ppp_release+0xd9/0x1a0 drivers/net/ppp/ppp_generic.c:406 #1: (cpu_hotplug_lock.rw_sem){++++}, at: [] get_online_cpus include/linux/cpu.h:138 [inline] #1: (cpu_hotplug_lock.rw_sem){++++}, at: [] flush_all_backlogs net/core/dev.c:4631 [inline] #1: (cpu_hotplug_lock.rw_sem){++++}, at: [] rollback_registered_many+0x416/0xac0 net/core/dev.c:7168 1 lock held by syz-executor1/17878: #0: (rtnl_mutex){+.+.}, at: [] dev_ioctl+0x281/0xce0 net/core/dev_ioctl.c:421 1 lock held by syz-executor1/17887: #0: (rtnl_mutex){+.+.}, at: [] dev_ioctl+0x281/0xce0 net/core/dev_ioctl.c:421 1 lock held by syz-executor7/17891: #0: (rtnl_mutex){+.+.}, at: [] raw_close+0xe/0x30 net/ipv4/raw.c:699 1 lock held by syz-executor7/17893: #0: (rtnl_mutex){+.+.}, at: [] raw_close+0xe/0x30 net/ipv4/raw.c:699 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 23 Comm: khungtaskd Not tainted 4.14.68+ #4 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xb9/0x11b lib/dump_stack.c:53 nmi_cpu_backtrace.cold.0+0x47/0x85 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x121/0x146 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:138 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:196 [inline] watchdog+0x574/0xa70 kernel/hung_task.c:252 kthread+0x348/0x420 kernel/kthread.c:232 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 17821 Comm: syz-executor4 Not tainted 4.14.68+ #4 task: ffff88019dd39780 task.stack: ffff8801a0260000 RIP: 0010:__trace_hardirqs_on_caller kernel/locking/lockdep.c:2882 [inline] RIP: 0010:trace_hardirqs_on_caller+0x2b7/0x520 kernel/locking/lockdep.c:2926 RSP: 0018:ffff8801a0267ee8 EFLAGS: 00000802 RAX: dffffc0000000000 RBX: ffff88019dd39780 RCX: 0000000000000000 RDX: 1ffff10033ba73ec RSI: 0000000000000001 RDI: ffff88019dd39f60 RBP: ffffffff84400096 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f123a9e2700(0000) GS:ffff8801dba00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f04e605c000 CR3: 00000001d40d8003 CR4: 00000000001606b0 DR0: 0000000020000040 DR1: ffffffffffffffff DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: trace_hardirqs_on_thunk+0x1a/0x1c entry_SYSCALL_64_after_hwframe+0x52/0xb7 RIP: 0033:0x457099 RSP: 002b:00007f123a9e1cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffff001 RBX: 00000000009300a8 RCX: 0000000000457099 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000009300a8 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000009300ac R13: 00007fff7b02a97f R14: 00007f123a9e29c0 R15: 0000000000000000 Code: 8e 8c 01 00 00 8b 83 18 08 00 00 85 c0 0f 85 d5 00 00 00 48 8d bb e0 07 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 3b 02 00 00 48 8d bb d8 07 00 00 48 89 ab e0