ip6_tunnel: 8 xmit: Local address not yet configured! ip6_tunnel: Î xmit: Local address not yet configured! INFO: task syz-executor.1:27731 blocked for more than 140 seconds. Not tainted 4.9.194+ #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D29432 27731 2104 0x00000004 0000000000000083 ffff88018cc42f80 ffff8801d3142680 ffff8801db621000 ffff8801c9b75f00 ffff8801db621018 ffff880186c6fa18 ffffffff8281af8e 000060fe23a17e70 1ffff10030d8df3a 00598a514859125a ffff8801db6218f0 Call Trace: [<0000000078469d09>] schedule+0x92/0x1c0 kernel/sched/core.c:3546 [<00000000b4f502c7>] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3579 [<00000000d8ab04b1>] __mutex_lock_common kernel/locking/mutex.c:582 [inline] [<00000000d8ab04b1>] mutex_lock_nested+0x38d/0x920 kernel/locking/mutex.c:621 [<00000000c88f9cbd>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70 [<00000000afb020fa>] devinet_ioctl+0x1a1/0x1610 net/ipv4/devinet.c:991 [<00000000ca85e26f>] inet_ioctl+0x10b/0x1a0 net/ipv4/af_inet.c:904 [<00000000c16264d7>] sock_do_ioctl+0x6a/0xb0 net/socket.c:906 [<000000000ad420b4>] sock_ioctl+0x24c/0x3d0 net/socket.c:992 [<00000000f8938578>] vfs_ioctl fs/ioctl.c:43 [inline] [<00000000f8938578>] file_ioctl fs/ioctl.c:493 [inline] [<00000000f8938578>] do_vfs_ioctl+0xb87/0x11d0 fs/ioctl.c:677 [<00000000d0aff99b>] SYSC_ioctl fs/ioctl.c:694 [inline] [<00000000d0aff99b>] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:685 [<00000000f8f0d80e>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<000000007d24ae95>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Showing all locks held in the system: 2 locks held by khungtaskd/24: #0: (rcu_read_lock){......}, at: [<00000000b8503986>] check_hung_uninterruptible_tasks kernel/hung_task.c:169 [inline] #0: (rcu_read_lock){......}, at: [<00000000b8503986>] watchdog+0x14b/0xaf0 kernel/hung_task.c:263 #1: (tasklist_lock){.+.?..}, at: [<00000000ac32622e>] debug_show_all_locks+0x7f/0x21f kernel/locking/lockdep.c:4336 1 lock held by rsyslogd/1895: #0: (&f->f_pos_lock){+.+.+.}, at: [<00000000123d1ac2>] __fdget_pos+0xa8/0xd0 fs/file.c:782 2 locks held by getty/2023: #0: (&tty->ldisc_sem){++++++}, at: [<0000000020c8a299>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+...}, at: [<00000000684bdc71>] n_tty_read+0x1fe/0x1820 drivers/tty/n_tty.c:2156 4 locks held by kworker/u4:14/19330: #0: ("%s""netns"){.+.+.+}, at: [<00000000d82513c5>] process_one_work+0x790/0x1600 kernel/workqueue.c:2107 #1: (net_cleanup_work){+.+.+.}, at: [<00000000a5ffece4>] process_one_work+0x7ce/0x1600 kernel/workqueue.c:2111 #2: (net_mutex){+.+.+.}, at: [<0000000064f78030>] cleanup_net+0x131/0x8a0 net/core/net_namespace.c:440 #3: (rtnl_mutex){+.+.+.}, at: [<00000000c88f9cbd>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70 3 locks held by kworker/0:3/9551: #0: ("%s"("ipv6_addrconf")){.+.+..}, at: [<00000000d82513c5>] process_one_work+0x790/0x1600 kernel/workqueue.c:2107 #1: ((addr_chk_work).work){+.+...}, at: [<00000000a5ffece4>] process_one_work+0x7ce/0x1600 kernel/workqueue.c:2111 #2: (rtnl_mutex){+.+.+.}, at: [<00000000c88f9cbd>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70 2 locks held by syz-executor.5/27717: #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnl_lock net/core/rtnetlink.c:70 [inline] #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnetlink_rcv+0x1c/0x40 net/core/rtnetlink.c:4086 #1: (rcu_preempt_state.exp_mutex){+.+...}, at: [<00000000c8b7da35>] exp_funnel_lock kernel/rcu/tree_exp.h:256 [inline] #1: (rcu_preempt_state.exp_mutex){+.+...}, at: [<00000000c8b7da35>] _synchronize_rcu_expedited+0x339/0x850 kernel/rcu/tree_exp.h:569 1 lock held by syz-executor.1/27731: #0: (rtnl_mutex){+.+.+.}, at: [<00000000c88f9cbd>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70 1 lock held by syz-executor.1/27732: #0: (rtnl_mutex){+.+.+.}, at: [<00000000c88f9cbd>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70 1 lock held by syz-executor.1/27734: #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnl_lock net/core/rtnetlink.c:70 [inline] #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnetlink_rcv+0x1c/0x40 net/core/rtnetlink.c:4086 1 lock held by syz-executor.1/27735: #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnl_lock net/core/rtnetlink.c:70 [inline] #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnetlink_rcv+0x1c/0x40 net/core/rtnetlink.c:4086 1 lock held by syz-executor.1/27736: #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnl_lock net/core/rtnetlink.c:70 [inline] #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnetlink_rcv+0x1c/0x40 net/core/rtnetlink.c:4086 1 lock held by syz-executor.1/27738: #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnl_lock net/core/rtnetlink.c:70 [inline] #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnetlink_rcv+0x1c/0x40 net/core/rtnetlink.c:4086 1 lock held by syz-executor.3/27747: #0: (rtnl_mutex){+.+.+.}, at: [<00000000c88f9cbd>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70 1 lock held by syz-executor.0/27750: #0: (rtnl_mutex){+.+.+.}, at: [<00000000c88f9cbd>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:70 1 lock held by syz-executor.0/27758: #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnl_lock net/core/rtnetlink.c:70 [inline] #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnetlink_rcv+0x1c/0x40 net/core/rtnetlink.c:4086 1 lock held by syz-executor.2/27773: #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnl_lock net/core/rtnetlink.c:70 [inline] #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnetlink_rcv+0x1c/0x40 net/core/rtnetlink.c:4086 1 lock held by syz-executor.2/27774: #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnl_lock net/core/rtnetlink.c:70 [inline] #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnetlink_rcv+0x1c/0x40 net/core/rtnetlink.c:4086 1 lock held by syz-executor.2/27775: #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnl_lock net/core/rtnetlink.c:70 [inline] #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnetlink_rcv+0x1c/0x40 net/core/rtnetlink.c:4086 1 lock held by syz-executor.4/27779: #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnl_lock net/core/rtnetlink.c:70 [inline] #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnetlink_rcv+0x1c/0x40 net/core/rtnetlink.c:4086 1 lock held by syz-executor.4/27780: #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnl_lock net/core/rtnetlink.c:70 [inline] #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnetlink_rcv+0x1c/0x40 net/core/rtnetlink.c:4086 1 lock held by syz-executor.4/27781: #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnl_lock net/core/rtnetlink.c:70 [inline] #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnetlink_rcv+0x1c/0x40 net/core/rtnetlink.c:4086 1 lock held by syz-executor.4/27783: #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnl_lock net/core/rtnetlink.c:70 [inline] #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnetlink_rcv+0x1c/0x40 net/core/rtnetlink.c:4086 1 lock held by syz-executor.4/27784: #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnl_lock net/core/rtnetlink.c:70 [inline] #0: (rtnl_mutex){+.+.+.}, at: [<0000000072d2b816>] rtnetlink_rcv+0x1c/0x40 net/core/rtnetlink.c:4086 2 locks held by kworker/1:5/27816: #0: ("events"){.+.+.+}, at: [<00000000d82513c5>] process_one_work+0x790/0x1600 kernel/workqueue.c:2107 #1: ((&rew.rew_work)){+.+...}, at: [<00000000a5ffece4>] process_one_work+0x7ce/0x1600 kernel/workqueue.c:2111 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.194+ #0 ffff8801d98d7cc8 ffffffff81b67001 0000000000000001 0000000000000000 0000000000000001 ffffffff81099d01 dffffc0000000000 ffff8801d98d7d00 ffffffff81b7229c 0000000000000001 0000000000000000 0000000000000001 Call Trace: [<000000009a8479e8>] __dump_stack lib/dump_stack.c:15 [inline] [<000000009a8479e8>] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [<000000004fe08860>] nmi_cpu_backtrace.cold+0x47/0x87 lib/nmi_backtrace.c:99 [<00000000e9b047e4>] nmi_trigger_cpumask_backtrace+0x124/0x155 lib/nmi_backtrace.c:60 [<00000000dfe67cfc>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37 [<00000000dba0ee7a>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline] [<00000000dba0ee7a>] check_hung_task kernel/hung_task.c:126 [inline] [<00000000dba0ee7a>] check_hung_uninterruptible_tasks kernel/hung_task.c:183 [inline] [<00000000dba0ee7a>] watchdog+0x670/0xaf0 kernel/hung_task.c:263 [<00000000e3e6a64d>] kthread+0x278/0x310 kernel/kthread.c:211 [<000000001d9e9cac>] 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 0xffffffff8282a0e1