2017/08/23 03:03:10 fuzzer started 2017/08/23 03:03:10 dialing manager at 10.0.2.10:34489 syzkaller login: [ 36.102516] watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [swapper/1:0] [ 36.103129] Modules linked in: [ 36.103415] irq event stamp: 24117453 [ 36.103717] hardirqs last enabled at (24117452): [] _raw_spin_unlock_irq+0x27/0x70 [ 36.104490] hardirqs last disabled at (24117453): [] apic_timer_interrupt+0x98/0xb0 [ 36.105249] softirqs last enabled at (127274): [] _local_bh_enable+0x1c/0x30 [ 36.105962] softirqs last disabled at (127275): [] irq_exit+0x1d3/0x210 [ 36.106657] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.13.0-rc6-next-20170822+ #6 [ 36.107279] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 36.107941] task: ffff88003e04e340 task.stack: ffff88003e050000 [ 36.108460] RIP: 0010:_raw_spin_unlock_irq+0x56/0x70 [ 36.108882] RSP: 0018:ffff88003ed077a0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 [ 36.109543] RAX: dffffc0000000000 RBX: ffff88003ed25200 RCX: 0000000000000002 [ 36.110144] RDX: 1ffffffff0b5915f RSI: 1ffff10007c09d7f RDI: ffffffff85ac8af8 [ 36.110736] RBP: ffff88003ed077a8 R08: ffff88003ed06e20 R09: 0000000000000000 [ 36.111340] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88003ed07850 [ 36.111905] R13: ffff88003ed2526c R14: ffff88003eb76400 R15: dffffc0000000000 [ 36.112591] FS: 0000000000000000(0000) GS:ffff88003ed00000(0000) knlGS:0000000000000000 [ 36.113262] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.113735] CR2: 00007ff6c92d31b0 CR3: 000000003d56b000 CR4: 00000000000006e0 [ 36.114623] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.115133] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.115639] Call Trace: [ 36.115826] [ 36.116032] idle_worker_timeout+0x2e3/0x400 [ 36.116423] ? destroy_worker+0x580/0x580 [ 36.116755] ? __lock_is_held+0xbc/0x140 [ 36.117135] call_timer_fn+0x246/0x850 [ 36.117483] ? destroy_worker+0x580/0x580 [ 36.117822] ? init_timer_key+0x3b0/0x3b0 [ 36.118183] ? lock_downgrade+0x990/0x990 [ 36.118556] ? __run_timers+0x809/0xb90 [ 36.118883] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 36.119299] ? do_raw_spin_trylock+0x190/0x190 [ 36.119699] ? __lock_is_held+0xbc/0x140 [ 36.120055] ? destroy_worker+0x580/0x580 [ 36.120419] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 36.120832] ? destroy_worker+0x580/0x580 [ 36.121188] __run_timers+0x7fd/0xb90 [ 36.121526] ? msleep_interruptible+0x170/0x170 [ 36.121900] ? lock_acquire+0x1d5/0x580 [ 36.122237] ? __hrtimer_run_queues+0x385/0xe10 [ 36.122640] ? find_held_lock+0x39/0x1d0 [ 36.122975] ? lock_downgrade+0x990/0x990 [ 36.123355] ? lock_acquire+0x1d5/0x580 [ 36.123677] ? clockevents_program_event+0x163/0x2e0 [ 36.124113] ? pvclock_read_flags+0x160/0x160 [ 36.124495] ? rcu_pm_notify+0xc0/0xc0 [ 36.124826] run_timer_softirq+0x67/0x80 [ 36.125177] __do_softirq+0x2bb/0xbd0 [ 36.125516] ? __softirqentry_text_start+0x8/0x8 [ 36.125896] ? native_apic_msr_write+0x5c/0x80 [ 36.126287] ? lapic_next_event+0x5a/0x90 [ 36.126635] ? clockevents_program_event+0x108/0x2e0 [ 36.127068] ? tick_program_event+0x7f/0xd0 [ 36.127439] ? hrtimer_interrupt+0x489/0x5f0 [ 36.127812] irq_exit+0x1d3/0x210 [ 36.128109] smp_apic_timer_interrupt+0x76/0xa0 [ 36.128503] apic_timer_interrupt+0x9d/0xb0 [ 36.128851] [ 36.129058] RIP: 0010:native_safe_halt+0x6/0x10 [ 36.129453] RSP: 0018:ffff88003e057db0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 [ 36.130082] RAX: dffffc0000000000 RBX: 1ffff10007c0afb9 RCX: 0000000000000000 [ 36.130673] RDX: 1ffffffff0b59160 RSI: 0000000000000001 RDI: ffffffff85ac8b00 [ 36.131263] RBP: ffff88003e057db0 R08: ffffffff85804a88 R09: 0000000000000000 [ 36.131857] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff85ac8af0 [ 36.132469] R13: ffff88003e057e68 R14: 0000000000000000 R15: ffff88003e04e340 [ 36.133088] default_idle+0xbf/0x460 [ 36.133416] ? __sched_text_end+0x4/0x4 [ 36.133752] ? tick_nohz_idle_enter+0xde/0x160 [ 36.134148] arch_cpu_idle+0xa/0x10 [ 36.134466] default_idle_call+0x36/0x90 [ 36.134797] do_idle+0x256/0x3b0 [ 36.135099] cpu_startup_entry+0x18/0x20 [ 36.135453] start_secondary+0x277/0x310 [ 36.135788] secondary_startup_64+0xa5/0xa5 [ 36.136132] Code: 8a ac 85 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 1d 48 83 3d 0b 10 d3 00 00 74 11 fb 66 0f 1f 44 00 00 <65> ff 0d d3 e9 27 7b 5b 5d c3 0f 0b e8 b9 c8 c8 fc eb dc 0f 1f [ 36.137849] Kernel panic - not syncing: softlockup: hung tasks [ 36.138360] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G L 4.13.0-rc6-next-20170822+ #6 [ 36.139076] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 36.139736] Call Trace: [ 36.139941] [ 36.140140] dump_stack+0x194/0x257 [ 36.140453] ? arch_local_irq_restore+0x53/0x53 [ 36.140822] ? vprintk_default+0x28/0x30 [ 36.141170] ? vprintk_func+0x5e/0xc0 [ 36.141501] panic+0x1e4/0x41c [ 36.141758] ? refcount_error_report+0x214/0x214 [ 36.142172] watchdog_timer_fn+0x401/0x410 [ 36.142532] ? watchdog_park_threads+0x240/0x240 [ 36.142918] __hrtimer_run_queues+0x349/0xe10 [ 36.143475] ? watchdog_park_threads+0x240/0x240 [ 36.143853] ? hrtimer_cancel+0x40/0x40 [ 36.144201] ? pvclock_read_flags+0x160/0x160 [ 36.144581] ? clockevents_program_event+0x163/0x2e0 [ 36.144997] ? kvm_clock_get_cycles+0x25/0x30 [ 36.145396] ? ktime_get_update_offsets_now+0x34a/0x520 [ 36.145824] ? do_timer+0x50/0x50 [ 36.146129] ? trace_hardirqs_off+0xd/0x10 [ 36.146500] hrtimer_interrupt+0x1d4/0x5f0 [ 36.146857] local_apic_timer_interrupt+0x6b/0xa0 [ 36.147264] smp_apic_timer_interrupt+0x71/0xa0 [ 36.147659] apic_timer_interrupt+0x9d/0xb0 [ 36.147998] RIP: 0010:_raw_spin_unlock_irq+0x56/0x70 [ 36.148439] RSP: 0018:ffff88003ed077a0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 [ 36.149070] RAX: dffffc0000000000 RBX: ffff88003ed25200 RCX: 0000000000000002 [ 36.149663] RDX: 1ffffffff0b5915f RSI: 1ffff10007c09d7f RDI: ffffffff85ac8af8 [ 36.150249] RBP: ffff88003ed077a8 R08: ffff88003ed06e20 R09: 0000000000000000 [ 36.150834] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88003ed07850 [ 36.151444] R13: ffff88003ed2526c R14: ffff88003eb76400 R15: dffffc0000000000 [ 36.152051] idle_worker_timeout+0x2e3/0x400 [ 36.152430] ? destroy_worker+0x580/0x580 [ 36.152760] ? __lock_is_held+0xbc/0x140 [ 36.153123] call_timer_fn+0x246/0x850 [ 36.153458] ? destroy_worker+0x580/0x580 [ 36.153786] ? init_timer_key+0x3b0/0x3b0 [ 36.154139] ? lock_downgrade+0x990/0x990 [ 36.154497] ? __run_timers+0x809/0xb90 [ 36.154812] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 36.155216] ? do_raw_spin_trylock+0x190/0x190 [ 36.155610] ? __lock_is_held+0xbc/0x140 [ 36.155934] ? destroy_worker+0x580/0x580 [ 36.156288] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 36.156706] ? destroy_worker+0x580/0x580 [ 36.156996] __run_timers+0x7fd/0xb90 [ 36.157237] ? msleep_interruptible+0x170/0x170 [ 36.157509] ? lock_acquire+0x1d5/0x580 [ 36.157730] ? __hrtimer_run_queues+0x385/0xe10 [ 36.157991] ? find_held_lock+0x39/0x1d0 [ 36.158237] ? lock_downgrade+0x990/0x990 [ 36.158745] ? lock_acquire+0x1d5/0x580 [ 36.159015] ? clockevents_program_event+0x163/0x2e0 [ 36.159377] ? pvclock_read_flags+0x160/0x160 [ 36.159672] ? rcu_pm_notify+0xc0/0xc0 [ 36.159930] run_timer_softirq+0x67/0x80 [ 36.160205] __do_softirq+0x2bb/0xbd0 [ 36.160475] ? __softirqentry_text_start+0x8/0x8 [ 36.160790] ? native_apic_msr_write+0x5c/0x80 [ 36.161099] ? lapic_next_event+0x5a/0x90 [ 36.161387] ? clockevents_program_event+0x108/0x2e0 [ 36.161723] ? tick_program_event+0x7f/0xd0 [ 36.162135] ? hrtimer_interrupt+0x489/0x5f0 [ 36.162562] irq_exit+0x1d3/0x210 [ 36.162869] smp_apic_timer_interrupt+0x76/0xa0 [ 36.163275] apic_timer_interrupt+0x9d/0xb0 [ 36.163649] [ 36.163843] RIP: 0010:native_safe_halt+0x6/0x10 [ 36.164239] RSP: 0018:ffff88003e057db0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 [ 36.164898] RAX: dffffc0000000000 RBX: 1ffff10007c0afb9 RCX: 0000000000000000 [ 36.165506] RDX: 1ffffffff0b59160 RSI: 0000000000000001 RDI: ffffffff85ac8b00 [ 36.166110] RBP: ffff88003e057db0 R08: ffffffff85804a88 R09: 0000000000000000 [ 36.166713] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff85ac8af0 [ 36.167315] R13: ffff88003e057e68 R14: 0000000000000000 R15: ffff88003e04e340 [ 36.167933] default_idle+0xbf/0x460 [ 36.168253] ? __sched_text_end+0x4/0x4 [ 36.168603] ? tick_nohz_idle_enter+0xde/0x160 [ 36.169002] arch_cpu_idle+0xa/0x10 [ 36.169315] default_idle_call+0x36/0x90 [ 36.169669] do_idle+0x256/0x3b0 [ 36.169960] cpu_startup_entry+0x18/0x20 [ 36.170308] start_secondary+0x277/0x310 [ 36.170659] secondary_startup_64+0xa5/0xa5 [ 36.171152] Dumping ftrace buffer: [ 36.171495] (ftrace buffer empty) [ 36.171811] Kernel Offset: disabled [ 36.172131] Rebooting in 86400 seconds..