ip6_tunnel: ip6tnl2 xmit: Local address not yet configured! INFO: task syz-executor.4:7235 blocked for more than 140 seconds. Not tainted 4.9.170+ #48 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D28552 7235 2124 0x00000004 ffff88018f5fdf00 0000000000000000 ffff8801db621000 ffffffff83031180 ffff8801db621018 ffff88018be47990 ffffffff82801a4e 0000000000000246 ffff88018f5fdf00 0000000000000000 ffff8801db6218f0 1ffff100317c8f21 Call Trace: [<00000000848dd8f1>] schedule+0x92/0x1c0 kernel/sched/core.c:3546 [<000000008486c6ce>] __rt_mutex_slowlock+0x99/0x290 kernel/locking/rtmutex.c:1221 [<000000006bcb34b7>] rt_mutex_slowlock+0x199/0x4c0 kernel/locking/rtmutex.c:1293 [<00000000f0a80991>] rt_mutex_fastlock kernel/locking/rtmutex.c:1439 [inline] [<00000000f0a80991>] rt_mutex_lock+0x2d/0x40 kernel/locking/rtmutex.c:1499 [<000000008c505b64>] process_notifier drivers/misc/uid_sys_stats.c:636 [inline] [<000000008c505b64>] process_notifier+0x96/0x670 drivers/misc/uid_sys_stats.c:625 [<00000000a56f0d07>] notifier_call_chain+0xb4/0x1d0 kernel/notifier.c:93 [<000000000f20c388>] __blocking_notifier_call_chain kernel/notifier.c:317 [inline] [<000000000f20c388>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] [<000000000f20c388>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] [<000000000f20c388>] blocking_notifier_call_chain+0x80/0xa0 kernel/notifier.c:325 [<000000007524ee99>] profile_task_exit+0x1f/0x30 kernel/profile.c:140 [<00000000d7bf2762>] do_exit+0x90/0x2aa0 kernel/exit.c:744 [<000000004bca9e48>] do_group_exit+0x111/0x300 kernel/exit.c:945 [<0000000094558361>] SYSC_exit_group kernel/exit.c:956 [inline] [<0000000094558361>] SyS_exit_group+0x1d/0x20 kernel/exit.c:954 [<00000000eb2fc042>] do_syscall_64+0x1ad/0x570 arch/x86/entry/common.c:285 [<000000001ac2f538>] 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: [<000000004feccc9e>] check_hung_uninterruptible_tasks kernel/hung_task.c:169 [inline] #0: (rcu_read_lock){......}, at: [<000000004feccc9e>] watchdog+0x14b/0xaf0 kernel/hung_task.c:263 #1: (tasklist_lock){.+.+..}, at: [<0000000051483eaf>] debug_show_all_locks+0x7f/0x21f kernel/locking/lockdep.c:4339 1 lock held by rsyslogd/1905: #0: (&f->f_pos_lock){+.+.+.}, at: [<000000004b431618>] __fdget_pos+0xa8/0xd0 fs/file.c:782 2 locks held by getty/2033: #0: (&tty->ldisc_sem){++++++}, at: [<00000000f28591b1>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377 #1: (&ldata->atomic_read_lock){+.+...}, at: [<00000000f8f0d4dc>] n_tty_read+0x1fe/0x1820 drivers/tty/n_tty.c:2156 1 lock held by syz-executor.4/2116: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by kworker/dying/17829: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by kworker/dying/15891: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by kworker/dying/17773: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by kworker/dying/2347: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by kworker/dying/2388: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.4/7235: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by syz-executor.4/7267: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by getty/7269: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by getty/7270: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by getty/7271: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by getty/7272: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by getty/7273: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 1 lock held by getty/7274: #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:316 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] __blocking_notifier_call_chain kernel/notifier.c:304 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain kernel/notifier.c:328 [inline] #0: ((task_exit_notifier).rwsem){.+.+..}, at: [<00000000353d5ca4>] blocking_notifier_call_chain+0x6a/0xa0 kernel/notifier.c:325 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.170+ #48 ffff8801d98d7cc8 ffffffff81b4fb21 0000000000000001 0000000000000000 0000000000000001 ffffffff81097401 dffffc0000000000 ffff8801d98d7d00 ffffffff81b5adbc 0000000000000001 0000000000000000 0000000000000001 Call Trace: [<00000000e64762e5>] __dump_stack lib/dump_stack.c:15 [inline] [<00000000e64762e5>] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [<000000003571a392>] nmi_cpu_backtrace.cold+0x47/0x87 lib/nmi_backtrace.c:99 [<00000000b5d58cc8>] nmi_trigger_cpumask_backtrace+0x124/0x155 lib/nmi_backtrace.c:60 [<000000005555d3eb>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37 [<0000000016f59049>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline] [<0000000016f59049>] check_hung_task kernel/hung_task.c:126 [inline] [<0000000016f59049>] check_hung_uninterruptible_tasks kernel/hung_task.c:183 [inline] [<0000000016f59049>] watchdog+0x670/0xaf0 kernel/hung_task.c:263 [<0000000088358061>] kthread+0x278/0x310 kernel/kthread.c:211 [<00000000d5c7af4f>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at pc 0xffffffff82810ac2