IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 INFO: task jbd2/sda1-8:2422 blocked for more than 140 seconds. Not tainted 4.19.0-rc1-next-20180831+ #53 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. jbd2/sda1-8 D17400 2422 2 0x80000000 Call Trace: context_switch kernel/sched/core.c:2825 [inline] __schedule+0x87c/0x1df0 kernel/sched/core.c:3473 schedule+0xfb/0x450 kernel/sched/core.c:3517 io_schedule+0x1c/0x70 kernel/sched/core.c:5140 bit_wait_io+0x18/0x90 kernel/sched/wait_bit.c:207 __wait_on_bit+0xb3/0x130 kernel/sched/wait_bit.c:48 out_of_line_wait_on_bit+0x213/0x3c0 kernel/sched/wait_bit.c:63 wait_on_bit_io include/linux/wait_bit.h:101 [inline] __wait_on_buffer+0x76/0x90 fs/buffer.c:119 wait_on_buffer include/linux/buffer_head.h:354 [inline] journal_wait_on_commit_record fs/jbd2/commit.c:175 [inline] jbd2_journal_commit_transaction+0x5ea5/0x884d fs/jbd2/commit.c:866 kjournald2+0x274/0xb50 fs/jbd2/journal.c:229 kthread+0x35a/0x420 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:415 INFO: task kworker/u4:8:12897 blocked for more than 140 seconds. Not tainted 4.19.0-rc1-next-20180831+ #53 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u4:8 D14216 12897 2 0x80000000 Workqueue: netns cleanup_net Call Trace: context_switch kernel/sched/core.c:2825 [inline] __schedule+0x87c/0x1df0 kernel/sched/core.c:3473 schedule+0xfb/0x450 kernel/sched/core.c:3517 schedule_timeout+0x1cc/0x260 kernel/time/timer.c:1780 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common kernel/sched/completion.c:115 [inline] wait_for_completion+0x430/0x8d0 kernel/sched/completion.c:136 _rcu_barrier+0x48c/0x790 kernel/rcu/tree.c:3478 rcu_barrier_sched kernel/rcu/tree.c:3502 [inline] rcu_barrier+0x10/0x20 kernel/rcu/tree_plugin.h:995 l2tp_exit_net+0x3ac/0x710 net/l2tp/l2tp_core.c:1737 ops_exit_list.isra.7+0xb0/0x160 net/core/net_namespace.c:153 cleanup_net+0x548/0xb60 net/core/net_namespace.c:551 process_one_work+0xc73/0x1aa0 kernel/workqueue.c:2153 worker_thread+0x189/0x13c0 kernel/workqueue.c:2296 kthread+0x35a/0x420 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:415 Showing all locks held in the system: 1 lock held by khungtaskd/790: #0: 00000000096599ed (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x428 kernel/locking/lockdep.c:4436 1 lock held by rsyslogd/4539: 2 locks held by getty/4629: #0: 000000003e74c394 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000002b08bbde (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4630: #0: 000000008de59054 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000b0ae68fc (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4631: #0: 0000000094d53a71 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000000d7a7271 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4632: #0: 00000000ab45c591 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000b297a816 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4633: #0: 0000000080dbb7b2 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000006c03f142 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4634: #0: 000000005bcff47b (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000c89c5ada (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/4635: #0: 000000007b13e214 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000001448594a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 4 locks held by kworker/u4:8/12897: #0: 00000000c7b68753 ((wq_completion)"%s""netns"){+.+.}, at: __write_once_size include/linux/compiler.h:215 [inline] #0: 00000000c7b68753 ((wq_completion)"%s""netns"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000c7b68753 ((wq_completion)"%s""netns"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000c7b68753 ((wq_completion)"%s""netns"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000c7b68753 ((wq_completion)"%s""netns"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000c7b68753 ((wq_completion)"%s""netns"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000c7b68753 ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0xb44/0x1aa0 kernel/workqueue.c:2124 #1: 00000000ad078231 (net_cleanup_work){+.+.}, at: process_one_work+0xb9b/0x1aa0 kernel/workqueue.c:2128 #2: 00000000f4e1df91 (pernet_ops_rwsem){++++}, at: cleanup_net+0x13f/0xb60 net/core/net_namespace.c:518 #3: 0000000088624302 (rcu_sched_state.barrier_mutex){+.+.}, at: _rcu_barrier+0x14a/0x790 kernel/rcu/tree.c:3413 2 locks held by syz-executor0/22595: ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 790 Comm: khungtaskd Not tainted 4.19.0-rc1-next-20180831+ #53 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+0x1c9/0x2b4 lib/dump_stack.c:113 nmi_cpu_backtrace.cold.3+0x48/0x88 lib/nmi_backtrace.c:101 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:144 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:204 [inline] watchdog+0xb39/0x1040 kernel/hung_task.c:265 kthread+0x35a/0x420 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.718 msecs CPU: 0 PID: 22595 Comm: syz-executor0 Not tainted 4.19.0-rc1-next-20180831+ #53 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0xa/0x50 kernel/kcov.c:100 Code: 1b 49 83 c1 01 4a 89 7c 10 e0 4a 89 74 10 e8 4a 89 54 10 f0 4a 89 4c d8 20 4c 89 08 5d c3 66 90 55 65 48 8b 04 25 40 ee 01 00 <65> 8b 15 cf 25 85 7e 48 89 e5 81 e2 00 01 1f 00 48 8b 75 08 75 2b RSP: 0018:ffff8801db007db0 EFLAGS: 00000093 RAX: ffff8801b6f42100 RBX: ffff8801db01f140 RCX: ffffffff816ef0a0 RDX: 0000009919b70e74 RSI: 7fffffffffffffff RDI: 0000000000000007 RBP: ffff8801db007de0 R08: ffff8801b6f42100 R09: ffffed003b604b98 R10: ffffed003b604b98 R11: ffff8801db025cc3 R12: 0000009919b70e74 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801db025d04 FS: 00007fc5f32a8700(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000001d93c9000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hrtimer_interrupt+0x348/0x750 kernel/time/hrtimer.c:1531 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1029 [inline] smp_apic_timer_interrupt+0x16d/0x6a0 arch/x86/kernel/apic/apic.c:1054 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:867 RIP: 0010:lock_is_held_type+0x42/0x210 kernel/locking/lockdep.c:3932 Code: 8b 1c 25 40 ee 01 00 48 8d bb 3c 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 8b 83 3c 08 00 00 85 c0 0f 85 46 01 00 00 RSP: 0018:ffff8801ca746ab0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000007 RBX: ffff8801b6f42100 RCX: ffffc9000227e000 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffff8801b6f4293c RBP: ffff8801ca746ad0 R08: ffff8801b6f42100 R09: ffffed00319cef19 R10: ffffed00319cef19 R11: ffff88018ce778cb R12: dffffc0000000000 R13: ffffc90001afc098 R14: ffff88018ce6c4c0 R15: ffff8801ca746c28 lock_is_held include/linux/lockdep.h:344 [inline] __kvm_memslots include/linux/kvm_host.h:581 [inline] kvm_vcpu_memslots include/linux/kvm_host.h:595 [inline] kvm_vcpu_gfn_to_memslot+0x5d7/0x810 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1229 mapping_level+0x64/0x4c0 arch/x86/kvm/mmu.c:1165 tdp_page_fault+0x29a/0xc00 arch/x86/kvm/mmu.c:4054 kvm_mmu_page_fault+0x226/0x19b0 arch/x86/kvm/mmu.c:5240 handle_ept_violation+0x27c/0x660 arch/x86/kvm/vmx.c:7679 vmx_handle_exit+0x2dd/0x1760 arch/x86/kvm/vmx.c:10115 vcpu_enter_guest+0x143c/0x61a0 arch/x86/kvm/x86.c:7630 vcpu_run arch/x86/kvm/x86.c:7693 [inline] kvm_arch_vcpu_ioctl_run+0x373/0x16d0 arch/x86/kvm/x86.c:7870 kvm_vcpu_ioctl+0x7b8/0x1280 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2590 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702 __do_sys_ioctl fs/ioctl.c:709 [inline] __se_sys_ioctl fs/ioctl.c:707 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:707 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457099 Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fc5f32a7c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fc5f32a86d4 RCX: 0000000000457099 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 000000000000000a RBP: 0000000000930140 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004cf460 R14: 00000000004c5786 R15: 0000000000000001