ip_tunnel: non-ECT from 0.0.0.0 with TOS=0x3 INFO: task syz-executor2:30565 blocked for more than 120 seconds. Not tainted 4.17.0-rc6+ #64 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D25216 30565 4576 0x00000004 Call Trace: context_switch kernel/sched/core.c:2859 [inline] __schedule+0x801/0x1e30 kernel/sched/core.c:3501 schedule+0xef/0x430 kernel/sched/core.c:3545 io_schedule+0x1c/0x70 kernel/sched/core.c:5165 wait_on_page_bit_common mm/filemap.c:1100 [inline] __lock_page+0x587/0x750 mm/filemap.c:1273 lock_page include/linux/pagemap.h:483 [inline] truncate_inode_pages_range+0x12c8/0x25a0 mm/truncate.c:448 blkdev_fallocate+0x231/0x400 fs/block_dev.c:2003 vfs_fallocate+0x4b4/0x8d0 fs/open.c:319 ksys_fallocate+0x56/0x90 fs/open.c:342 __do_sys_fallocate fs/open.c:350 [inline] __se_sys_fallocate fs/open.c:348 [inline] __x64_sys_fallocate+0x97/0xf0 fs/open.c:348 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455a09 RSP: 002b:00007f32f84f8c68 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f32f84f96d4 RCX: 0000000000455a09 RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000000013 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 7fffffffffffffff R11: 0000000000000246 R12: 00000000ffffffff R13: 000000000000007e R14: 00000000006f4c70 R15: 0000000000000000 Showing all locks held in the system: 2 locks held by khungtaskd/892: #0: 000000007bda1d77 (rcu_read_lock){....}, at: check_hung_uninterruptible_tasks kernel/hung_task.c:175 [inline] #0: 000000007bda1d77 (rcu_read_lock){....}, at: watchdog+0x1ff/0xf60 kernel/hung_task.c:249 #1: 00000000fe9abd48 (tasklist_lock){.+.+}, at: debug_show_all_locks+0xde/0x34a kernel/locking/lockdep.c:4470 1 lock held by rsyslogd/4408: #0: 00000000594c50b1 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1a9/0x1e0 fs/file.c:766 2 locks held by getty/4499: #0: 00000000c7cb9a3e (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 000000001059f454 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x321/0x1cc0 drivers/tty/n_tty.c:2131 2 locks held by getty/4500: #0: 00000000a229a9d6 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 00000000ffb94b61 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x321/0x1cc0 drivers/tty/n_tty.c:2131 2 locks held by getty/4501: #0: 00000000007bab37 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 000000003f9762ea (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x321/0x1cc0 drivers/tty/n_tty.c:2131 2 locks held by getty/4502: #0: 00000000a4003581 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 000000002c16b6de (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x321/0x1cc0 drivers/tty/n_tty.c:2131 2 locks held by getty/4503: #0: 0000000025366b0d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 00000000f6dcea7b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x321/0x1cc0 drivers/tty/n_tty.c:2131 2 locks held by getty/4504: #0: 00000000913fcfbc (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 000000004423ad4d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x321/0x1cc0 drivers/tty/n_tty.c:2131 2 locks held by getty/29345: #0: 0000000073da1f0d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: 0000000000c1f4a1 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x321/0x1cc0 drivers/tty/n_tty.c:2131 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 892 Comm: khungtaskd Not tainted 4.17.0-rc6+ #64 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1b9/0x294 lib/dump_stack.c:113 nmi_cpu_backtrace.cold.4+0x19/0xce lib/nmi_backtrace.c:103 nmi_trigger_cpumask_backtrace+0x151/0x192 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:138 [inline] check_hung_task kernel/hung_task.c:132 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:190 [inline] watchdog+0xc10/0xf60 kernel/hung_task.c:249 kthread+0x345/0x410 kernel/kthread.c:240 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.17.0-rc6+ #64 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:lock_is_held_type+0x35/0x210 kernel/locking/lockdep.c:3951 RSP: 0018:ffff8801dae07bd0 EFLAGS: 00000807 RAX: dffffc0000000000 RBX: ffffffff88c75dc0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff88c765f4 RBP: ffff8801dae07bf0 R08: ffffed003b5c46d3 R09: ffffed003b5c46d2 R10: ffffed003b5c46d2 R11: ffff8801dae23693 R12: 0000000000000007 R13: ffffffff88d8e520 R14: ffff8801dae07e68 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000015ba000 CR3: 00000001d4354000 CR4: 00000000001406f0 DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: lock_is_held include/linux/lockdep.h:344 [inline] rcu_read_lock_sched_held+0x108/0x120 kernel/rcu/update.c:117 trace_softirq_raise include/trace/events/irq.h:156 [inline] __raise_softirq_irqoff kernel/softirq.c:443 [inline] raise_softirq_irqoff+0x275/0x310 kernel/softirq.c:417 scheduler_ipi+0x6a0/0xa30 kernel/sched/core.c:1779 smp_reschedule_interrupt+0xed/0x660 arch/x86/kernel/smp.c:277 reschedule_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:887 RIP: 0010:native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:54 RSP: 0018:ffffffff88c07bc0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff02 RAX: dffffc0000000000 RBX: 1ffffffff1180f7b RCX: 0000000000000000 RDX: 1ffffffff11a31b0 RSI: 0000000000000001 RDI: ffffffff88d18d80 RBP: ffffffff88c07bc0 R08: ffffed003b5c46d3 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffffffff88c07c78 R14: ffffffff897bf9e0 R15: 0000000000000000 arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline] default_idle+0xc2/0x440 arch/x86/kernel/process.c:500 arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:491 default_idle_call+0x6d/0x90 kernel/sched/idle.c:93 cpuidle_idle_call kernel/sched/idle.c:153 [inline] do_idle+0x395/0x560 kernel/sched/idle.c:262 cpu_startup_entry+0x104/0x120 kernel/sched/idle.c:368 rest_init+0xe1/0xe4 init/main.c:441 start_kernel+0x906/0x92d init/main.c:737 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:453 x86_64_start_kernel+0x76/0x79 arch/x86/kernel/head64.c:434 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:242 Code: 55 48 89 e5 41 55 49 89 fd 41 54 53 65 48 8b 1c 25 40 ee 01 00 48 8d bb 34 08 00 00 48 89 fa 48 83 ec 08 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 6e 01 00 00