ip6_tunnel: ip6tnl1 xmit: Local address not yet configured! ip6_tunnel: ip6tnl1 xmit: Local address not yet configured! ip6_tunnel: ip6tnl1 xmit: Local address not yet configured! INFO: task syz-executor.3:17790 blocked for more than 140 seconds. Not tainted 4.14.111+ #50 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D28816 17790 1860 0x90000004 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3498 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:572 [inline] rwsem_down_write_failed+0x3b1/0x760 kernel/locking/rwsem-xadd.c:601 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:157 free_pgtables+0xb3/0x1c0 mm/memory.c:644 exit_mmap+0x222/0x440 mm/mmap.c:3068 __mmput kernel/fork.c:929 [inline] mmput kernel/fork.c:950 [inline] mmput+0xc8/0x350 kernel/fork.c:945 exit_mm kernel/exit.c:545 [inline] do_exit+0x84e/0x2960 kernel/exit.c:861 INFO: task syz-executor.0:17820 blocked for more than 140 seconds. Not tainted 4.14.111+ #50 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28464 17820 1360 0x90000000 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3498 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:572 [inline] rwsem_down_write_failed+0x3b1/0x760 kernel/locking/rwsem-xadd.c:601 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:157 free_pgtables+0xb3/0x1c0 mm/memory.c:644 exit_mmap+0x222/0x440 mm/mmap.c:3068 __mmput kernel/fork.c:929 [inline] mmput kernel/fork.c:950 [inline] mmput+0xc8/0x350 kernel/fork.c:945 exit_mm kernel/exit.c:545 [inline] do_exit+0x84e/0x2960 kernel/exit.c:861 INFO: task syz-executor.4:17800 blocked for more than 140 seconds. Not tainted 4.14.111+ #50 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D27704 17800 1856 0x90000000 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3498 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:572 [inline] rwsem_down_write_failed+0x3b1/0x760 kernel/locking/rwsem-xadd.c:601 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:157 free_pgtables+0xb3/0x1c0 mm/memory.c:644 exit_mmap+0x222/0x440 mm/mmap.c:3068 __mmput kernel/fork.c:929 [inline] mmput kernel/fork.c:950 [inline] mmput+0xc8/0x350 kernel/fork.c:945 exit_mm kernel/exit.c:545 [inline] do_exit+0x84e/0x2960 kernel/exit.c:861 INFO: task syz-executor.5:17818 blocked for more than 140 seconds. Not tainted 4.14.111+ #50 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D29136 17818 12962 0x90000000 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3498 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:572 [inline] rwsem_down_write_failed+0x3b1/0x760 kernel/locking/rwsem-xadd.c:601 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:157 free_pgtables+0xb3/0x1c0 mm/memory.c:644 exit_mmap+0x222/0x440 mm/mmap.c:3068 __mmput kernel/fork.c:929 [inline] mmput kernel/fork.c:950 [inline] mmput+0xc8/0x350 kernel/fork.c:945 exit_mm kernel/exit.c:545 [inline] do_exit+0x84e/0x2960 kernel/exit.c:861 INFO: task syz-executor.1:17808 blocked for more than 140 seconds. Not tainted 4.14.111+ #50 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D27848 17808 9243 0x90000000 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3498 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:572 [inline] rwsem_down_write_failed+0x3b1/0x760 kernel/locking/rwsem-xadd.c:601 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:157 free_pgtables+0xb3/0x1c0 mm/memory.c:644 exit_mmap+0x222/0x440 mm/mmap.c:3068 __mmput kernel/fork.c:929 [inline] mmput kernel/fork.c:950 [inline] mmput+0xc8/0x350 kernel/fork.c:945 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: [<000000002137f6dd>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4544 2 locks held by getty/1756: #0: (&tty->ldisc_sem){++++}, at: [<0000000064f3185b>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:275 #1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000a383b678>] n_tty_read+0x1f7/0x1700 drivers/tty/n_tty.c:2156 1 lock held by syz-executor.3/1846: #0: (&mapping->i_mmap_rwsem){++++}, at: [<000000007dfd11d7>] i_mmap_lock_write include/linux/fs.h:470 [inline] #0: (&mapping->i_mmap_rwsem){++++}, at: [<000000007dfd11d7>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:157 1 lock held by syz-executor.4/1847: #0: (&mapping->i_mmap_rwsem){++++}, at: [<000000007dfd11d7>] i_mmap_lock_write include/linux/fs.h:470 [inline] #0: (&mapping->i_mmap_rwsem){++++}, at: [<000000007dfd11d7>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:157 1 lock held by syz-executor.0/1359: #0: (&mapping->i_mmap_rwsem){++++}, at: [<000000007dfd11d7>] i_mmap_lock_write include/linux/fs.h:470 [inline] #0: (&mapping->i_mmap_rwsem){++++}, at: [<000000007dfd11d7>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:157 1 lock held by syz-executor.1/9242: #0: (&mapping->i_mmap_rwsem){++++}, at: [<000000007dfd11d7>] i_mmap_lock_write include/linux/fs.h:470 [inline] #0: (&mapping->i_mmap_rwsem){++++}, at: [<000000007dfd11d7>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:157 1 lock held by syz-executor.2/12168: #0: (&mapping->i_mmap_rwsem){++++}, at: [<000000007dfd11d7>] i_mmap_lock_write include/linux/fs.h:470 [inline] #0: (&mapping->i_mmap_rwsem){++++}, at: [<000000007dfd11d7>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:157 1 lock held by syz-executor.5/12961: #0: (&mapping->i_mmap_rwsem){++++}, at: [<000000007dfd11d7>] i_mmap_lock_write include/linux/fs.h:470 [inline] #0: (&mapping->i_mmap_rwsem){++++}, at: [<000000007dfd11d7>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:157 1 lock held by syz-executor.3/17790: #0: (&mapping->i_mmap_rwsem){++++}, at: [<000000007dfd11d7>] i_mmap_lock_write include/linux/fs.h:470 [inline] #0: (&mapping->i_mmap_rwsem){++++}, at: [<000000007dfd11d7>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:157 1 lock held by syz-executor.0/17820: #0: (&mapping->i_mmap_rwsem){++++}, at: [<000000007dfd11d7>] i_mmap_lock_write include/linux/fs.h:470 [inline] #0: (&mapping->i_mmap_rwsem){++++}, at: [<000000007dfd11d7>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:157 1 lock held by syz-executor.4/17800: #0: (&mapping->i_mmap_rwsem){++++}, at: [<000000007dfd11d7>] i_mmap_lock_write include/linux/fs.h:470 [inline] #0: (&mapping->i_mmap_rwsem){++++}, at: [<000000007dfd11d7>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:157 1 lock held by syz-executor.5/17818: #0: (&mapping->i_mmap_rwsem){++++}, at: [<000000007dfd11d7>] i_mmap_lock_write include/linux/fs.h:470 [inline] #0: (&mapping->i_mmap_rwsem){++++}, at: [<000000007dfd11d7>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:157 1 lock held by syz-executor.1/17808: #0: (&mapping->i_mmap_rwsem){++++}, at: [<000000007dfd11d7>] i_mmap_lock_write include/linux/fs.h:470 [inline] #0: (&mapping->i_mmap_rwsem){++++}, at: [<000000007dfd11d7>] unlink_file_vma+0x6e/0xa0 mm/mmap.c:157 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 23 Comm: khungtaskd Not tainted 4.14.111+ #50 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 0 to CPUs 1: INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.064 msecs NMI backtrace for cpu 1 CPU: 1 PID: 17799 Comm: syz-executor.2 Not tainted 4.14.111+ #50 task: 00000000fecdd8f6 task.stack: 000000003935c86e RIP: 0010:__sanitizer_cov_trace_pc+0x23/0x60 kernel/kcov.c:68 RSP: 0018:ffff8881c7f97910 EFLAGS: 00000246 RAX: ffff88819f099780 RBX: 0000000000000000 RCX: 0000000000040000 RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffffea0006a14f00 RBP: ffffea0006a14f00 R08: 0000000000000001 R09: 0000000000000004 R10: ffff88819f09a050 R11: 0000000000000001 R12: 00007fcca82d2000 R13: ffffea0006a14f20 R14: dffffc0000000000 R15: ffff8881797d4688 FS: 00007f8738be3700(0000) GS:ffff8881dbb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7e80e49000 CR3: 00000001847d0004 CR4: 00000000001606a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: __read_once_size include/linux/compiler.h:183 [inline] compound_head include/linux/page-flags.h:148 [inline] PageAnon include/linux/page-flags.h:409 [inline] page_remove_rmap+0x16/0x440 mm/rmap.c:1295 zap_pte_range mm/memory.c:1342 [inline] zap_pmd_range mm/memory.c:1444 [inline] zap_pud_range mm/memory.c:1473 [inline] zap_p4d_range mm/memory.c:1494 [inline] unmap_page_range+0xa26/0x12f0 mm/memory.c:1515 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:2785 [inline] unmap_mapping_range_tree mm/memory.c:2806 [inline] unmap_mapping_range+0x212/0x290 mm/memory.c:2853 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/0x4b0 arch/x86/entry/common.c:289 Code: 00 00 e9 90 ed ff ff 90 65 48 8b 04 25 c0 de 01 00 48 85 c0 74 1a 65 8b 15 cb 32 91 5c 81 e2 00 01 1f 00 75 0b 8b 90 a8 11 00 00 <83> fa 01 74 01 c3 48 c7 c2 00 00 00 81 48 81 ea 00 00 40 a3 48