ip6_tunnel: 6 xmit: Local address not yet configured! ip6_tunnel: w xmit: Local address not yet configured! ip6_tunnel: ip6tnl1 xmit: Local address not yet configured! ip6_tunnel: Q xmit: Local address not yet configured! ip6_tunnel: 8 xmit: Local address not yet configured! INFO: task syz-executor.0:31685 blocked for more than 140 seconds. ip6_tunnel: ^ xmit: Local address not yet configured! Not tainted 4.14.140+ #39 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D27760 31685 5199 0x00000004 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3498 schedule_timeout+0x752/0xe90 kernel/time/timer.c:1721 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common+0x29c/0x470 kernel/sched/completion.c:123 flush_work+0x3e2/0x720 kernel/workqueue.c:2908 lru_add_drain_all_cpuslocked mm/swap.c:722 [inline] lru_add_drain_all_cpuslocked+0x2d5/0x420 mm/swap.c:691 lru_add_drain_all+0xf/0x20 mm/swap.c:730 do_mlock+0x90/0x5d0 mm/mlock.c:673 SYSC_mlock2 mm/mlock.c:726 [inline] SyS_mlock2+0x49/0x70 mm/mlock.c:716 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007f6fd299cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000145 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459879 RDX: 0000000000000000 RSI: 0000000000004000 RDI: 0000000020000000 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6fd299d6d4 R13: 00000000004c5d6b R14: 00000000004da7e0 R15: 00000000ffffffff INFO: task syz-executor.0:31706 blocked for more than 140 seconds. Not tainted 4.14.140+ #39 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D29712 31706 5199 0x00000004 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3498 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3556 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893 lru_add_drain_all_cpuslocked+0x6c/0x420 mm/swap.c:704 lru_add_drain_all+0xf/0x20 mm/swap.c:730 do_mlock+0x90/0x5d0 mm/mlock.c:673 SYSC_mlock2 mm/mlock.c:726 [inline] SyS_mlock2+0x49/0x70 mm/mlock.c:716 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007f6fd295ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000145 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459879 RDX: 0000000000000000 RSI: 0000000000004000 RDI: 0000000020000000 RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6fd295b6d4 R13: 00000000004c5d6b R14: 00000000004da7e0 R15: 00000000ffffffff INFO: task syz-executor.1:31720 blocked for more than 140 seconds. Not tainted 4.14.140+ #39 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D30568 31720 1850 0x00000004 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3498 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3556 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893 lru_add_drain_all_cpuslocked+0x6c/0x420 mm/swap.c:704 lru_add_drain_all+0xf/0x20 mm/swap.c:730 SYSC_mlockall mm/mlock.c:802 [inline] SyS_mlockall+0x1e1/0x520 mm/mlock.c:790 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007f252f2aac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000097 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000459879 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000007 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f252f2ab6d4 R13: 00000000004c5d72 R14: 00000000004da7f8 R15: 00000000ffffffff INFO: task syz-executor.1:31723 blocked for more than 140 seconds. Not tainted 4.14.140+ #39 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D27712 31723 1850 0x00000004 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3498 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3556 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893 lru_add_drain_all_cpuslocked+0x6c/0x420 mm/swap.c:704 lru_add_drain_all+0xf/0x20 mm/swap.c:730 SYSC_mlockall mm/mlock.c:802 [inline] SyS_mlockall+0x1e1/0x520 mm/mlock.c:790 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007f252f289c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000097 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000459879 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000007 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f252f28a6d4 R13: 00000000004c5d72 R14: 00000000004da7f8 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/23: #0: (tasklist_lock){.+.+}, at: [<000000006a1702af>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4541 3 locks held by kworker/1:1/65: #0: ("%s"("ipv6_addrconf")){+.+.}, at: [<00000000266b48ef>] process_one_work+0x6ff/0x1580 kernel/workqueue.c:2105 #1: ((addr_chk_work).work){+.+.}, at: [<000000003b09e38c>] process_one_work+0x735/0x1580 kernel/workqueue.c:2109 #2: (rtnl_mutex){+.+.}, at: [<0000000066b262bd>] addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4431 2 locks held by getty/1754: #0: (&tty->ldisc_sem){++++}, at: [<00000000323c7d5e>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284 #1: (&ldata->atomic_read_lock){+.+.}, at: [<0000000054e86581>] n_tty_read+0x1f7/0x1700 drivers/tty/n_tty.c:2156 2 locks held by syz-executor.1/4616: #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline] #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601 #1: (rtnl_mutex){+.+.}, at: [<000000005f853a73>] raw_close+0xe/0x30 net/ipv4/raw.c:699 2 locks held by syz-executor.1/4659: #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline] #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601 #1: (rtnl_mutex){+.+.}, at: [<000000005f853a73>] raw_close+0xe/0x30 net/ipv4/raw.c:699 1 lock held by syz-executor.1/10552: #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline] #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601 1 lock held by syz-executor.1/18640: #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline] #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601 3 locks held by kworker/1:5/25408: #0: ("events"){+.+.}, at: [<00000000266b48ef>] process_one_work+0x6ff/0x1580 kernel/workqueue.c:2105 #1: ((linkwatch_work).work){+.+.}, at: [<000000003b09e38c>] process_one_work+0x735/0x1580 kernel/workqueue.c:2109 #2: (rtnl_mutex){+.+.}, at: [<00000000ae7de0af>] linkwatch_event+0xa/0x50 net/core/link_watch.c:236 1 lock held by syz-executor.1/28502: #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline] #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601 2 locks held by syz-executor.1/29184: #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline] #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601 #1: (rtnl_mutex){+.+.}, at: [<000000005f853a73>] raw_close+0xe/0x30 net/ipv4/raw.c:699 2 locks held by kworker/u4:4/30416: #0: ("events_unbound"){+.+.}, at: [<00000000266b48ef>] process_one_work+0x6ff/0x1580 kernel/workqueue.c:2105 #1: (connector_reaper_work){+.+.}, at: [<000000003b09e38c>] process_one_work+0x735/0x1580 kernel/workqueue.c:2109 1 lock held by syz-executor.1/400: #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline] #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601 1 lock held by syz-executor.1/437: #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline] #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601 2 locks held by syz-executor.0/8645: #0: (rtnl_mutex){+.+.}, at: [<000000009eba00ec>] tun_detach drivers/net/tun.c:585 [inline] #0: (rtnl_mutex){+.+.}, at: [<000000009eba00ec>] tun_chr_close+0x34/0x60 drivers/net/tun.c:2654 #1: (rcu_preempt_state.exp_mutex){+.+.}, at: [<00000000ac9b533c>] exp_funnel_lock kernel/rcu/tree_exp.h:305 [inline] #1: (rcu_preempt_state.exp_mutex){+.+.}, at: [<00000000ac9b533c>] _synchronize_rcu_expedited+0x377/0x840 kernel/rcu/tree_exp.h:596 1 lock held by syz-executor.1/9025: #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline] #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601 1 lock held by syz-executor.1/12933: #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline] #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601 1 lock held by syz-executor.1/12935: #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline] #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601 2 locks held by syz-executor.0/15048: #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline] #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601 #1: (rtnl_mutex){+.+.}, at: [<000000005f853a73>] raw_close+0xe/0x30 net/ipv4/raw.c:699 1 lock held by syz-executor.0/15178: #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline] #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601 2 locks held by syz-executor.0/19373: #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline] #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601 #1: (rcu_preempt_state.exp_mutex){+.+.}, at: [<00000000ac9b533c>] exp_funnel_lock kernel/rcu/tree_exp.h:305 [inline] #1: (rcu_preempt_state.exp_mutex){+.+.}, at: [<00000000ac9b533c>] _synchronize_rcu_expedited+0x377/0x840 kernel/rcu/tree_exp.h:596 1 lock held by syz-executor.1/19450: #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline] #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601 1 lock held by syz-executor.1/19456: #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline] #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601 2 locks held by kworker/u4:37/21634: #0: ("events_unbound"){+.+.}, at: [<00000000266b48ef>] process_one_work+0x6ff/0x1580 kernel/workqueue.c:2105 #1: ((reaper_work).work){+.+.}, at: [<000000003b09e38c>] process_one_work+0x735/0x1580 kernel/workqueue.c:2109 2 locks held by syz-executor.0/31252: #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] inode_lock include/linux/fs.h:718 [inline] #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [<00000000c9aa822a>] __sock_release+0x86/0x2c0 net/socket.c:601 #1: (rtnl_mutex){+.+.}, at: [<000000005f853a73>] raw_close+0xe/0x30 net/ipv4/raw.c:699 2 locks held by syz-executor.0/31685: #0: (cpu_hotplug_lock.rw_sem){++++}, at: [<000000004daaa149>] get_online_cpus include/linux/cpu.h:140 [inline] #0: (cpu_hotplug_lock.rw_sem){++++}, at: [<000000004daaa149>] lru_add_drain_all+0xa/0x20 mm/swap.c:729 #1: (lock#4){+.+.}, at: [<00000000488ad7cd>] lru_add_drain_all_cpuslocked+0x6c/0x420 mm/swap.c:704 2 locks held by syz-executor.0/31706: #0: (cpu_hotplug_lock.rw_sem){++++}, at: [<000000004daaa149>] get_online_cpus include/linux/cpu.h:140 [inline] #0: (cpu_hotplug_lock.rw_sem){++++}, at: [<000000004daaa149>] lru_add_drain_all+0xa/0x20 mm/swap.c:729 #1: (lock#4){+.+.}, at: [<00000000488ad7cd>] lru_add_drain_all_cpuslocked+0x6c/0x420 mm/swap.c:704 2 locks held by syz-executor.1/31720: #0: (cpu_hotplug_lock.rw_sem){++++}, at: [<000000004daaa149>] get_online_cpus include/linux/cpu.h:140 [inline] #0: (cpu_hotplug_lock.rw_sem){++++}, at: [<000000004daaa149>] lru_add_drain_all+0xa/0x20 mm/swap.c:729 #1: (lock#4){+.+.}, at: [<00000000488ad7cd>] lru_add_drain_all_cpuslocked+0x6c/0x420 mm/swap.c:704 2 locks held by syz-executor.1/31723: #0: (cpu_hotplug_lock.rw_sem){++++}, at: [<000000004daaa149>] get_online_cpus include/linux/cpu.h:140 [inline] #0: (cpu_hotplug_lock.rw_sem){++++}, at: [<000000004daaa149>] lru_add_drain_all+0xa/0x20 mm/swap.c:729 #1: (lock#4){+.+.}, at: [<00000000488ad7cd>] lru_add_drain_all_cpuslocked+0x6c/0x420 mm/swap.c:704 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 23 Comm: khungtaskd Not tainted 4.14.140+ #39 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xca/0x134 lib/dump_stack.c:53 nmi_cpu_backtrace.cold+0x47/0x86 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x119/0x147 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x629/0xbe0 kernel/hung_task.c:274 kthread+0x31f/0x430 kernel/kthread.c:232 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:404 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 1624 Comm: rs:main Q:Reg Not tainted 4.14.140+ #39 task: 000000001697a225 task.stack: 000000008403222a RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__need_fs_reclaim+0x8b/0x100 mm/page_alloc.c:3554 RSP: 0018:ffff8881d026f2c8 EFLAGS: 00000206 RAX: 0000000001408040 RBX: 0000000001408040 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000001408040 RDI: ffff8881d0a0af24 RBP: ffff8881d0a0af00 R08: 0000000000007190 R09: ffffed103ae844fa R10: ffffed103ae844f9 R11: ffff8881d74227cf R12: 0000000001408040 R13: 0000000000000090 R14: ffffffff8e50eec7 R15: ffff8881cab5c8d8 FS: 00007f860322b700(0000) GS:ffff8881d7400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000256c290 CR3: 00000001d1628006 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: fs_reclaim_acquire+0x5/0x10 mm/page_alloc.c:3569 slab_pre_alloc_hook mm/slab.h:417 [inline] slab_alloc_node mm/slub.c:2684 [inline] slab_alloc mm/slub.c:2766 [inline] __kmalloc+0x48/0x360 mm/slub.c:3800 kmalloc include/linux/slab.h:493 [inline] kzalloc include/linux/slab.h:661 [inline] ext4_find_extent+0x717/0x980 fs/ext4/extents.c:900 ext4_ext_map_blocks+0x1f9/0x4a40 fs/ext4/extents.c:4311 ext4_map_blocks+0x7f4/0x1600 fs/ext4/inode.c:636 mpage_map_one_extent fs/ext4/inode.c:2467 [inline] mpage_map_and_submit_extent fs/ext4/inode.c:2520 [inline] ext4_writepages+0x16ed/0x30a0 fs/ext4/inode.c:2891 do_writepages+0xe5/0x280 mm/page-writeback.c:2348 __filemap_fdatawrite_range+0x1a4/0x290 mm/filemap.c:347 file_write_and_wait_range+0x84/0x100 mm/filemap.c:677 __generic_file_fsync+0x70/0x190 fs/libfs.c:977 ext4_sync_file+0x3ac/0x1250 fs/ext4/fsync.c:120 vfs_fsync_range+0x106/0x260 fs/sync.c:196 generic_write_sync include/linux/fs.h:2699 [inline] ext4_file_write_iter+0x883/0xdb0 fs/ext4/file.c:279 call_write_iter include/linux/fs.h:1788 [inline] new_sync_write fs/read_write.c:471 [inline] __vfs_write+0x401/0x5a0 fs/read_write.c:484 vfs_write+0x17f/0x4d0 fs/read_write.c:546 SYSC_write fs/read_write.c:594 [inline] SyS_write+0x102/0x250 fs/read_write.c:586 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x7f8604c8919d RSP: 002b:00007f8603229f90 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000400 RCX: 00007f8604c8919d RDX: 0000000000000400 RSI: 00000000024a1340 RDI: 0000000000000002 RBP: 00000000024a1340 R08: 302038312079614d R09: 2039303a32343a33 R10: 656c6c616b7a7973 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f860322a410 R14: 00000000024d5ac0 R15: 00000000024a1140 Code: c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 75 89 d8 24 7f f6 45 26 04 0f 45 d8 f7 c3 00 00 40 00 74 4e <65> 48 8b 2c 25 c0 de 01 00 48 8d 7d 24 48 b8 00 00 00 00 00 fc