ip6_tunnel: q xmit: Local address not yet configured! ip6_tunnel: q xmit: Local address not yet configured! ip6_tunnel: J xmit: Local address not yet configured! ip6_tunnel: l0 xmit: Local address not yet configured! ip6_tunnel: J xmit: Local address not yet configured! INFO: task syz-executor.5:3617 blocked for more than 140 seconds. Not tainted 4.14.123+ #5 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D27352 3617 8089 0x80000002 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3498 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:588 [inline] rwsem_down_write_failed+0x3b1/0x760 kernel/locking/rwsem-xadd.c:617 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 i_mmap_lock_write include/linux/fs.h:470 [inline] unlink_file_vma+0x6e/0xa0 mm/mmap.c:158 free_pgtables+0xb3/0x1c0 mm/memory.c:644 exit_mmap+0x222/0x440 mm/mmap.c:3073 __mmput kernel/fork.c:938 [inline] mmput kernel/fork.c:959 [inline] mmput+0xc8/0x350 kernel/fork.c:954 exit_mm kernel/exit.c:545 [inline] do_exit+0x84e/0x2960 kernel/exit.c:861 INFO: task syz-executor.2:3688 blocked for more than 140 seconds. Not tainted 4.14.123+ #5 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D27792 3688 1842 0x80000000 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3498 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:588 [inline] rwsem_down_write_failed+0x3b1/0x760 kernel/locking/rwsem-xadd.c:617 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 i_mmap_lock_write include/linux/fs.h:470 [inline] unlink_file_vma+0x6e/0xa0 mm/mmap.c:158 free_pgtables+0xb3/0x1c0 mm/memory.c:644 exit_mmap+0x222/0x440 mm/mmap.c:3073 __mmput kernel/fork.c:938 [inline] mmput kernel/fork.c:959 [inline] mmput+0xc8/0x350 kernel/fork.c:954 exit_mm kernel/exit.c:545 [inline] do_exit+0x84e/0x2960 kernel/exit.c:861 INFO: task syz-executor.3:3690 blocked for more than 140 seconds. Not tainted 4.14.123+ #5 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28480 3690 3683 0x80000004 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3498 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:588 [inline] rwsem_down_write_failed+0x3b1/0x760 kernel/locking/rwsem-xadd.c:617 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 i_mmap_lock_write include/linux/fs.h:470 [inline] unlink_file_vma+0x6e/0xa0 mm/mmap.c:158 free_pgtables+0xb3/0x1c0 mm/memory.c:644 exit_mmap+0x222/0x440 mm/mmap.c:3073 __mmput kernel/fork.c:938 [inline] mmput kernel/fork.c:959 [inline] mmput+0xc8/0x350 kernel/fork.c:954 exit_mm kernel/exit.c:545 [inline] do_exit+0x84e/0x2960 kernel/exit.c:861 Showing all locks held in the system: 1 lock held by khungtaskd/23: #0: (tasklist_lock){.+.+}, at: [<000000001426798b>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4541 1 lock held by rsyslogd/1619: #0: (&f->f_pos_lock){+.+.}, at: [<000000009157093f>] __fdget_pos+0xa6/0xc0 fs/file.c:769 2 locks held by getty/1747: #0: (&tty->ldisc_sem){++++}, at: [<000000009c7cb0da>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284 #1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000b9c3b90c>] n_tty_read+0x1f7/0x1700 drivers/tty/n_tty.c:2156 1 lock held by syz-executor.2/1829: #0: (&mapping->i_mmap_rwsem){++++}, at: [<00000000ba15e669>] i_mmap_lock_write include/linux/fs.h:470 [inline] #0: (&mapping->i_mmap_rwsem){++++}, at: [<00000000ba15e669>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:158 1 lock held by syz-executor.3/1830: #0: (&mapping->i_mmap_rwsem){++++}, at: [<00000000ba15e669>] i_mmap_lock_write include/linux/fs.h:470 [inline] #0: (&mapping->i_mmap_rwsem){++++}, at: [<00000000ba15e669>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:158 1 lock held by syz-executor.5/8088: #0: (&mapping->i_mmap_rwsem){++++}, at: [<00000000ba15e669>] i_mmap_lock_write include/linux/fs.h:470 [inline] #0: (&mapping->i_mmap_rwsem){++++}, at: [<00000000ba15e669>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:158 1 lock held by syz-executor.5/3617: #0: (&mapping->i_mmap_rwsem){++++}, at: [<00000000ba15e669>] i_mmap_lock_write include/linux/fs.h:470 [inline] #0: (&mapping->i_mmap_rwsem){++++}, at: [<00000000ba15e669>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:158 1 lock held by syz-executor.2/3688: #0: (&mapping->i_mmap_rwsem){++++}, at: [<00000000ba15e669>] i_mmap_lock_write include/linux/fs.h:470 [inline] #0: (&mapping->i_mmap_rwsem){++++}, at: [<00000000ba15e669>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:158 1 lock held by syz-executor.3/3690: #0: (&mapping->i_mmap_rwsem){++++}, at: [<00000000ba15e669>] i_mmap_lock_write include/linux/fs.h:470 [inline] #0: (&mapping->i_mmap_rwsem){++++}, at: [<00000000ba15e669>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:158 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 23 Comm: khungtaskd Not tainted 4.14.123+ #5 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xb9/0x10e lib/dump_stack.c:53 nmi_cpu_backtrace.cold+0x47/0x86 lib/nmi_backtrace.c:101 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 3683 Comm: syz-executor.3 Not tainted 4.14.123+ #5 task: 00000000ae5fae11 task.stack: 0000000017553977 RIP: 0010:__lock_acquire+0x6/0x3fa0 kernel/locking/lockdep.c:3344 RSP: 0018:ffff8881d7607a40 EFLAGS: 00000002 RAX: 0000000000000000 RBX: 0000000000000046 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8bed3c20 RBP: ffff8881d7607a48 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000 FS: 00007f3e19a86700(0000) GS:ffff8881d7600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd3bd655db8 CR3: 000000014b038006 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: lock_acquire+0x10f/0x380 kernel/locking/lockdep.c:3991 rcu_lock_acquire include/linux/rcupdate.h:244 [inline] rcu_read_lock include/linux/rcupdate.h:631 [inline] __perf_event_output kernel/events/core.c:6262 [inline] perf_event_output_forward+0xa5/0x220 kernel/events/core.c:6282 __perf_event_overflow+0x116/0x320 kernel/events/core.c:7520 perf_swevent_hrtimer+0x238/0x390 kernel/events/core.c:8730 __run_hrtimer kernel/time/hrtimer.c:1259 [inline] __hrtimer_run_queues+0x269/0xc10 kernel/time/hrtimer.c:1323 hrtimer_interrupt+0x1bd/0x490 kernel/time/hrtimer.c:1357 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline] smp_apic_timer_interrupt+0x136/0x620 arch/x86/kernel/apic/apic.c:1062 apic_timer_interrupt+0x84/0x90 arch/x86/entry/entry_64.S:789 RIP: 0010:zap_pte_range mm/memory.c:1308 [inline] RIP: 0010:zap_pmd_range mm/memory.c:1444 [inline] RIP: 0010:zap_pud_range mm/memory.c:1473 [inline] RIP: 0010:zap_p4d_range mm/memory.c:1494 [inline] RIP: 0010:unmap_page_range+0x771/0x12f0 mm/memory.c:1515 RSP: 0018:ffff8881796ef948 EFLAGS: 00000287 ORIG_RAX: ffffffffffffff10 RAX: 0000000000040000 RBX: 00000000000000ac RCX: 0000000000040000 RDX: ffffffff814ce560 RSI: ffffc90004dd5000 RDI: ffff88816dc3b00c RBP: 00007fd47902f000 R08: 0000000000000001 R09: 0000000000000004 R10: ffff8881c8c188d0 R11: 0000000000000001 R12: 00007fd47902f000 R13: ffffea00068c7b80 R14: dffffc0000000000 R15: ffff88817ef5c178 unmap_single_vma+0x118/0x170 mm/memory.c:1560 zap_page_range_single+0x1c2/0x270 mm/memory.c:1651 unmap_mapping_range_vma mm/memory.c:2791 [inline] unmap_mapping_range_tree mm/memory.c:2812 [inline] unmap_mapping_range+0x212/0x290 mm/memory.c:2859 truncate_pagecache+0x51/0x90 mm/truncate.c:760 simple_setattr+0xc6/0xf0 fs/libfs.c:409 notify_change2+0xbdd/0xd70 fs/attr.c:317 do_truncate2+0x11e/0x1e0 fs/open.c:63 do_sys_ftruncate.constprop.0+0x34f/0x4a0 fs/open.c:214 do_syscall_64+0x19b/0x510 arch/x86/entry/common.c:292 Code: e8 f0 74 33 00 e9 87 fe ff ff 90 66 2e 0f 1f 84 00 00 00 00 00 48 8b 3c 24 e9 b7 fa ff ff 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 <41> 56 41 55 41 54 49 89 fc 53 89 d3 48 ba 00 00 00 00 00 fc ff