2017/08/22 14:44:25 fuzzer started 2017/08/22 14:44:25 dialing manager at 10.0.2.10:34489 syzkaller login: [ 36.062017] watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [swapper/2:0] [ 36.062500] Modules linked in: [ 36.062714] irq event stamp: 25609007 [ 36.062965] hardirqs last enabled at (25609006): [] restore_regs_and_iret+0x0/0x1d [ 36.063602] hardirqs last disabled at (25609007): [] apic_timer_interrupt+0x98/0xb0 [ 36.064231] softirqs last enabled at (105508): [] _local_bh_enable+0x1c/0x30 [ 36.064824] softirqs last disabled at (105509): [] irq_exit+0x1d3/0x210 [ 36.065377] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 4.13.0-rc6-next-20170822+ #6 [ 36.065890] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 36.066441] task: ffff88006dac6040 task.stack: ffff88006dac8000 [ 36.066849] RIP: 0010:lock_acquire+0x256/0x580 [ 36.067157] RSP: 0018:ffff88006de077b8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 [ 36.067678] RAX: dffffc0000000000 RBX: ffff88006dac6040 RCX: 0000000000000000 [ 36.068157] RDX: 1ffffffff0b5915d RSI: ffffffff84d9e4a6 RDI: 0000000000000286 [ 36.068641] RBP: ffff88006de078b0 R08: ffff88006de07230 R09: ffff88006de07228 [ 36.069105] R10: ffff88006de071a0 R11: 1ffff1000db58e9b R12: 1ffff1000dbc0efd [ 36.069586] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 [ 36.070066] FS: 0000000000000000(0000) GS:ffff88006de00000(0000) knlGS:0000000000000000 [ 36.070613] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.070963] CR2: 00007f9922aac1b0 CR3: 000000006acb2000 CR4: 00000000000006e0 [ 36.072042] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.072528] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.073005] Call Trace: [ 36.073182] [ 36.073333] ? ktime_get_resolution_ns+0x300/0x300 [ 36.073662] ? lock_release+0xd70/0xd70 [ 36.073928] ? do_raw_spin_trylock+0x190/0x190 [ 36.074242] ? do_timer+0x50/0x50 [ 36.074482] ? native_apic_msr_write+0x5c/0x80 [ 36.074785] ? lapic_next_event+0x5a/0x90 [ 36.075066] ? clockevents_program_event+0x108/0x2e0 [ 36.075415] call_timer_fn+0x20a/0x850 [ 36.075682] ? call_timer_fn+0x1e0/0x850 [ 36.075955] ? destroy_worker+0x580/0x580 [ 36.076242] ? init_timer_key+0x3b0/0x3b0 [ 36.076527] ? retint_kernel+0x10/0x10 [ 36.076781] ? destroy_worker+0x580/0x580 [ 36.077063] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 36.077406] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 36.077718] ? retint_kernel+0x10/0x10 [ 36.077970] ? destroy_worker+0x580/0x580 [ 36.078255] ? _raw_spin_unlock_irq+0x56/0x70 [ 36.078556] ? destroy_worker+0x580/0x580 [ 36.078825] __run_timers+0x7fd/0xb90 [ 36.079083] ? msleep_interruptible+0x170/0x170 [ 36.079392] ? lock_acquire+0x1d5/0x580 [ 36.079652] ? __hrtimer_run_queues+0x385/0xe10 [ 36.079961] ? find_held_lock+0x39/0x1d0 [ 36.080240] ? lock_downgrade+0x990/0x990 [ 36.080523] ? lock_acquire+0x1d5/0x580 [ 36.080779] ? clockevents_program_event+0x163/0x2e0 [ 36.081121] ? pvclock_read_flags+0x160/0x160 [ 36.081420] ? rcu_pm_notify+0xc0/0xc0 [ 36.081681] run_timer_softirq+0x67/0x80 [ 36.081946] __do_softirq+0x2bb/0xbd0 [ 36.082206] ? __softirqentry_text_start+0x8/0x8 [ 36.082524] ? native_apic_msr_write+0x5c/0x80 [ 36.082828] ? lapic_next_event+0x5a/0x90 [ 36.083091] ? clockevents_program_event+0x108/0x2e0 [ 36.083426] ? tick_program_event+0x7f/0xd0 [ 36.083711] ? hrtimer_interrupt+0x489/0x5f0 [ 36.084010] irq_exit+0x1d3/0x210 [ 36.084232] smp_apic_timer_interrupt+0x76/0xa0 [ 36.084535] apic_timer_interrupt+0x9d/0xb0 [ 36.084814] [ 36.084963] RIP: 0010:native_safe_halt+0x6/0x10 [ 36.085258] RSP: 0018:ffff88006dacfdb0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 [ 36.085753] RAX: dffffc0000000000 RBX: 1ffff1000db59fb9 RCX: 0000000000000000 [ 36.086213] RDX: 1ffffffff0b59160 RSI: 0000000000000001 RDI: ffffffff85ac8b00 [ 36.086678] RBP: ffff88006dacfdb0 R08: ffffffff85804a90 R09: 0000000000000000 [ 36.087139] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff85ac8af0 [ 36.087587] R13: ffff88006dacfe68 R14: 0000000000000000 R15: ffff88006dac6040 [ 36.088037] default_idle+0xbf/0x460 [ 36.088275] ? __sched_text_end+0x4/0x4 [ 36.088542] ? tick_nohz_idle_enter+0xde/0x160 [ 36.088843] arch_cpu_idle+0xa/0x10 [ 36.089074] default_idle_call+0x36/0x90 [ 36.089350] do_idle+0x256/0x3b0 [ 36.089583] cpu_startup_entry+0x18/0x20 [ 36.089849] start_secondary+0x277/0x310 [ 36.090123] secondary_startup_64+0xa5/0xa5 [ 36.090420] Code: 00 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 95 02 00 00 48 83 3d 21 8f 57 04 00 0f 84 d1 01 00 00 48 8b bd 20 ff ff ff 57 9d <0f> 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 49 c7 04 04 00 00 [ 36.091939] Kernel panic - not syncing: softlockup: hung tasks [ 36.092332] CPU: 2 PID: 0 Comm: swapper/2 Tainted: G L 4.13.0-rc6-next-20170822+ #6 [ 36.093647] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 36.094171] Call Trace: [ 36.094338] [ 36.094483] dump_stack+0x194/0x257 [ 36.094723] ? arch_local_irq_restore+0x53/0x53 [ 36.095025] ? vprintk_default+0x28/0x30 [ 36.095296] ? vprintk_func+0x5e/0xc0 [ 36.095556] panic+0x1e4/0x41c [ 36.095767] ? refcount_error_report+0x214/0x214 [ 36.096078] watchdog_timer_fn+0x401/0x410 [ 36.096353] ? watchdog_park_threads+0x240/0x240 [ 36.096669] __hrtimer_run_queues+0x349/0xe10 [ 36.096962] ? watchdog_park_threads+0x240/0x240 [ 36.097265] ? hrtimer_cancel+0x40/0x40 [ 36.097526] ? __save_stack_trace+0x91/0xd0 [ 36.097808] ? pvclock_read_flags+0x160/0x160 [ 36.098092] ? detach_if_pending+0x250/0x610 [ 36.098377] ? check_noncircular+0x20/0x20 [ 36.098658] ? kvm_clock_get_cycles+0x25/0x30 [ 36.098948] ? ktime_get_update_offsets_now+0x34a/0x520 [ 36.099289] ? do_timer+0x50/0x50 [ 36.099518] ? find_held_lock+0x39/0x1d0 [ 36.099791] hrtimer_interrupt+0x1d4/0x5f0 [ 36.100072] local_apic_timer_interrupt+0x6b/0xa0 [ 36.100384] smp_apic_timer_interrupt+0x71/0xa0 [ 36.100695] apic_timer_interrupt+0x9d/0xb0 [ 36.100974] RIP: 0010:lock_acquire+0x256/0x580 [ 36.101263] RSP: 0018:ffff88006de077b8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 [ 36.101760] RAX: dffffc0000000000 RBX: ffff88006dac6040 RCX: 0000000000000000 [ 36.102218] RDX: 1ffffffff0b5915d RSI: ffffffff84d9e4a6 RDI: 0000000000000286 [ 36.102683] RBP: ffff88006de078b0 R08: ffff88006de07230 R09: ffff88006de07228 [ 36.103136] R10: ffff88006de071a0 R11: 1ffff1000db58e9b R12: 1ffff1000dbc0efd [ 36.103597] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 [ 36.104063] ? smp_apic_timer_interrupt+0x76/0xa0 [ 36.104380] ? ktime_get_resolution_ns+0x300/0x300 [ 36.104702] ? lock_release+0xd70/0xd70 [ 36.104959] ? do_raw_spin_trylock+0x190/0x190 [ 36.105247] ? do_timer+0x50/0x50 [ 36.105477] ? native_apic_msr_write+0x5c/0x80 [ 36.105777] ? lapic_next_event+0x5a/0x90 [ 36.106047] ? clockevents_program_event+0x108/0x2e0 [ 36.106379] call_timer_fn+0x20a/0x850 [ 36.106634] ? call_timer_fn+0x1e0/0x850 [ 36.106901] ? destroy_worker+0x580/0x580 [ 36.107164] ? init_timer_key+0x3b0/0x3b0 [ 36.107437] ? retint_kernel+0x10/0x10 [ 36.107694] ? destroy_worker+0x580/0x580 [ 36.107965] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 36.108283] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 36.108598] ? retint_kernel+0x10/0x10 [ 36.108851] ? destroy_worker+0x580/0x580 [ 36.109117] ? _raw_spin_unlock_irq+0x56/0x70 [ 36.109409] ? destroy_worker+0x580/0x580 [ 36.109679] __run_timers+0x7fd/0xb90 [ 36.109933] ? msleep_interruptible+0x170/0x170 [ 36.110224] ? lock_acquire+0x1d5/0x580 [ 36.110481] ? __hrtimer_run_queues+0x385/0xe10 [ 36.110788] ? find_held_lock+0x39/0x1d0 [ 36.111055] ? lock_downgrade+0x990/0x990 [ 36.111330] ? lock_acquire+0x1d5/0x580 [ 36.111592] ? clockevents_program_event+0x163/0x2e0 [ 36.111932] ? pvclock_read_flags+0x160/0x160 [ 36.112215] ? rcu_pm_notify+0xc0/0xc0 [ 36.112474] run_timer_softirq+0x67/0x80 [ 36.112737] __do_softirq+0x2bb/0xbd0 [ 36.112992] ? __softirqentry_text_start+0x8/0x8 [ 36.113287] ? native_apic_msr_write+0x5c/0x80 [ 36.114372] ? lapic_next_event+0x5a/0x90 [ 36.114666] ? clockevents_program_event+0x108/0x2e0 [ 36.115025] ? tick_program_event+0x7f/0xd0 [ 36.115328] ? hrtimer_interrupt+0x489/0x5f0 [ 36.115653] irq_exit+0x1d3/0x210 [ 36.115899] smp_apic_timer_interrupt+0x76/0xa0 [ 36.116220] apic_timer_interrupt+0x9d/0xb0 [ 36.116518] [ 36.116676] RIP: 0010:native_safe_halt+0x6/0x10 [ 36.116998] RSP: 0018:ffff88006dacfdb0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 [ 36.117519] RAX: dffffc0000000000 RBX: 1ffff1000db59fb9 RCX: 0000000000000000 [ 36.118015] RDX: 1ffffffff0b59160 RSI: 0000000000000001 RDI: ffffffff85ac8b00 [ 36.118506] RBP: ffff88006dacfdb0 R08: ffffffff85804a90 R09: 0000000000000000 [ 36.119004] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff85ac8af0 [ 36.119499] R13: ffff88006dacfe68 R14: 0000000000000000 R15: ffff88006dac6040 [ 36.120010] default_idle+0xbf/0x460 [ 36.120267] ? __sched_text_end+0x4/0x4 [ 36.120553] ? tick_nohz_idle_enter+0xde/0x160 [ 36.120875] arch_cpu_idle+0xa/0x10 [ 36.121119] default_idle_call+0x36/0x90 [ 36.121405] do_idle+0x256/0x3b0 [ 36.121647] cpu_startup_entry+0x18/0x20 [ 36.121931] start_secondary+0x277/0x310 [ 36.122207] secondary_startup_64+0xa5/0xa5 [ 36.122636] Dumping ftrace buffer: [ 36.122923] (ftrace buffer empty) [ 36.123183] Kernel Offset: disabled [ 36.123443] Rebooting in 86400 seconds..