2017/08/22 23:43:39 fuzzer started 2017/08/22 23:43:39 dialing manager at 10.0.2.10:34489 syzkaller login: [ 36.077015] watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [swapper/3:0] [ 36.077680] Modules linked in: [ 36.077986] irq event stamp: 23506009 [ 36.078329] hardirqs last enabled at (23506008): [] _raw_spin_unlock_irq+0x27/0x70 [ 36.079166] hardirqs last disabled at (23506009): [] apic_timer_interrupt+0x98/0xb0 [ 36.080003] softirqs last enabled at (105838): [] _local_bh_enable+0x1c/0x30 [ 36.080786] softirqs last disabled at (105839): [] irq_exit+0x1d3/0x210 [ 36.081514] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 4.13.0-rc6-next-20170822+ #6 [ 36.082192] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 36.082908] task: ffff88006dad4080 task.stack: ffff88006dad8000 [ 36.083440] RIP: 0010:lock_release+0x6d2/0xd70 [ 36.083851] RSP: 0018:ffff88006df07708 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff10 [ 36.084520] RAX: 0000000000000000 RBX: fffffffffffffffe RCX: 0000000000000000 [ 36.085155] RDX: 1ffffffff0b5915d RSI: 0000000000000001 RDI: ffffed000dbe0f10 [ 36.085822] RBP: ffff88006df078b8 R08: ffff88006df06e20 R09: 1ffff1000dbe0ef2 [ 36.086458] R10: ffff88006dad4080 R11: 0000000000000000 R12: ffff88006df07790 [ 36.087067] R13: ffff88006dad4080 R14: 0000000000000000 R15: 0000000000000003 [ 36.087641] FS: 0000000000000000(0000) GS:ffff88006df00000(0000) knlGS:0000000000000000 [ 36.088553] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.089088] CR2: 00007f2ed1f2d1b0 CR3: 000000006b0da000 CR4: 00000000000006e0 [ 36.089746] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.090388] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.091039] Call Trace: [ 36.091272] [ 36.091474] ? lock_downgrade+0x990/0x990 [ 36.091847] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 36.092287] ? trace_hardirqs_on+0xd/0x10 [ 36.092656] ? _raw_spin_unlock_irq+0x27/0x70 [ 36.093054] ? idle_worker_timeout+0x2e3/0x400 [ 36.093461] ? ktime_get_resolution_ns+0x300/0x300 [ 36.093911] ? __lock_is_held+0xbc/0x140 [ 36.094281] call_timer_fn+0x2a3/0x850 [ 36.094627] ? destroy_worker+0x580/0x580 [ 36.094998] ? init_timer_key+0x3b0/0x3b0 [ 36.095358] ? lock_downgrade+0x990/0x990 [ 36.095729] ? __run_timers+0x809/0xb90 [ 36.096076] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 36.096491] ? do_raw_spin_trylock+0x190/0x190 [ 36.096894] ? __lock_is_held+0xbc/0x140 [ 36.097250] ? destroy_worker+0x580/0x580 [ 36.097612] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 36.098054] ? destroy_worker+0x580/0x580 [ 36.098412] __run_timers+0x7fd/0xb90 [ 36.098760] ? msleep_interruptible+0x170/0x170 [ 36.099164] ? lock_acquire+0x1d5/0x580 [ 36.099507] ? __hrtimer_run_queues+0x385/0xe10 [ 36.099917] ? find_held_lock+0x39/0x1d0 [ 36.100281] ? lock_downgrade+0x990/0x990 [ 36.100646] ? lock_acquire+0x1d5/0x580 [ 36.100998] ? clockevents_program_event+0x163/0x2e0 [ 36.101458] ? pvclock_read_flags+0x160/0x160 [ 36.101859] ? rcu_pm_notify+0xc0/0xc0 [ 36.102207] run_timer_softirq+0x67/0x80 [ 36.102560] __do_softirq+0x2bb/0xbd0 [ 36.102898] ? __softirqentry_text_start+0x8/0x8 [ 36.103309] ? native_apic_msr_write+0x5c/0x80 [ 36.103711] ? lapic_next_event+0x5a/0x90 [ 36.104080] ? clockevents_program_event+0x108/0x2e0 [ 36.104537] ? tick_program_event+0x7f/0xd0 [ 36.104922] ? hrtimer_interrupt+0x489/0x5f0 [ 36.105328] irq_exit+0x1d3/0x210 [ 36.105635] smp_apic_timer_interrupt+0x76/0xa0 [ 36.106054] apic_timer_interrupt+0x9d/0xb0 [ 36.106430] [ 36.106636] RIP: 0010:native_safe_halt+0x6/0x10 [ 36.107038] RSP: 0018:ffff88006dadfdb0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 [ 36.107705] RAX: dffffc0000000000 RBX: 1ffff1000db5bfb9 RCX: 0000000000000000 [ 36.108332] RDX: 1ffffffff0b59160 RSI: 0000000000000001 RDI: ffffffff85ac8b00 [ 36.108899] RBP: ffff88006dadfdb0 R08: ffffffff85804a98 R09: 0000000000000000 [ 36.109651] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff85ac8af0 [ 36.110221] R13: ffff88006dadfe68 R14: 0000000000000000 R15: ffff88006dad4080 [ 36.110870] default_idle+0xbf/0x460 [ 36.111195] ? __sched_text_end+0x4/0x4 [ 36.111555] ? tick_nohz_idle_enter+0xde/0x160 [ 36.111957] arch_cpu_idle+0xa/0x10 [ 36.112277] default_idle_call+0x36/0x90 [ 36.112632] do_idle+0x256/0x3b0 [ 36.112933] cpu_startup_entry+0x18/0x20 [ 36.113289] start_secondary+0x277/0x310 [ 36.113645] secondary_startup_64+0xa5/0xa5 [ 36.114034] Code: fc ff df 48 01 c3 31 c0 48 8d 7b 08 48 c7 03 00 00 00 00 48 c7 43 24 00 00 00 00 48 83 e7 f8 48 29 fb 8d 4b 2c c1 e9 03 f3 48 ab <48> 81 c4 88 01 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 65 8b 05 [ 36.115917] Kernel panic - not syncing: softlockup: hung tasks [ 36.116435] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G L 4.13.0-rc6-next-20170822+ #6 [ 36.117196] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 36.117900] Call Trace: [ 36.118125] [ 36.118318] dump_stack+0x194/0x257 [ 36.118637] ? arch_local_irq_restore+0x53/0x53 [ 36.119041] ? vprintk_default+0x28/0x30 [ 36.119395] ? vprintk_func+0x5e/0xc0 [ 36.119732] panic+0x1e4/0x41c [ 36.120015] ? refcount_error_report+0x214/0x214 [ 36.120451] watchdog_timer_fn+0x401/0x410 [ 36.120827] ? watchdog_park_threads+0x240/0x240 [ 36.121250] __hrtimer_run_queues+0x349/0xe10 [ 36.121643] ? watchdog_park_threads+0x240/0x240 [ 36.122072] ? hrtimer_cancel+0x40/0x40 [ 36.122427] ? pvclock_read_flags+0x160/0x160 [ 36.122835] ? kvm_clock_get_cycles+0x25/0x30 [ 36.123226] ? ktime_get_update_offsets_now+0x34a/0x520 [ 36.123702] ? do_timer+0x50/0x50 [ 36.124013] ? do_raw_spin_trylock+0x190/0x190 [ 36.124414] ? __internal_add_timer+0x141/0x2d0 [ 36.124825] hrtimer_interrupt+0x1d4/0x5f0 [ 36.125204] ? check_noncircular+0x20/0x20 [ 36.125576] local_apic_timer_interrupt+0x6b/0xa0 [ 36.125997] smp_apic_timer_interrupt+0x71/0xa0 [ 36.126402] apic_timer_interrupt+0x9d/0xb0 [ 36.126776] RIP: 0010:lock_release+0x6d2/0xd70 [ 36.127169] RSP: 0018:ffff88006df07708 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff10 [ 36.127828] RAX: 0000000000000000 RBX: fffffffffffffffe RCX: 0000000000000000 [ 36.128449] RDX: 1ffffffff0b5915d RSI: 0000000000000001 RDI: ffffed000dbe0f10 [ 36.129072] RBP: ffff88006df078b8 R08: ffff88006df06e20 R09: 1ffff1000dbe0ef2 [ 36.129690] R10: ffff88006dad4080 R11: 0000000000000000 R12: ffff88006df07790 [ 36.130254] R13: ffff88006dad4080 R14: 0000000000000000 R15: 0000000000000003 [ 36.131060] ? lock_downgrade+0x990/0x990 [ 36.131426] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 36.131869] ? trace_hardirqs_on+0xd/0x10 [ 36.132232] ? _raw_spin_unlock_irq+0x27/0x70 [ 36.132626] ? idle_worker_timeout+0x2e3/0x400 [ 36.133022] ? ktime_get_resolution_ns+0x300/0x300 [ 36.133459] ? __lock_is_held+0xbc/0x140 [ 36.133830] call_timer_fn+0x2a3/0x850 [ 36.134169] ? destroy_worker+0x580/0x580 [ 36.134531] ? init_timer_key+0x3b0/0x3b0 [ 36.134892] ? lock_downgrade+0x990/0x990 [ 36.135255] ? __run_timers+0x809/0xb90 [ 36.135601] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 36.136018] ? do_raw_spin_trylock+0x190/0x190 [ 36.136418] ? __lock_is_held+0xbc/0x140 [ 36.136777] ? destroy_worker+0x580/0x580 [ 36.137137] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 36.137572] ? destroy_worker+0x580/0x580 [ 36.137937] __run_timers+0x7fd/0xb90 [ 36.138279] ? msleep_interruptible+0x170/0x170 [ 36.138681] ? lock_acquire+0x1d5/0x580 [ 36.139032] ? __hrtimer_run_queues+0x385/0xe10 [ 36.139440] ? find_held_lock+0x39/0x1d0 [ 36.139797] ? lock_downgrade+0x990/0x990 [ 36.140165] ? lock_acquire+0x1d5/0x580 [ 36.140513] ? clockevents_program_event+0x163/0x2e0 [ 36.140970] ? pvclock_read_flags+0x160/0x160 [ 36.141364] ? rcu_pm_notify+0xc0/0xc0 [ 36.141723] run_timer_softirq+0x67/0x80 [ 36.142081] __do_softirq+0x2bb/0xbd0 [ 36.142419] ? __softirqentry_text_start+0x8/0x8 [ 36.142840] ? native_apic_msr_write+0x5c/0x80 [ 36.143238] ? lapic_next_event+0x5a/0x90 [ 36.143600] ? clockevents_program_event+0x108/0x2e0 [ 36.144048] ? tick_program_event+0x7f/0xd0 [ 36.144432] ? hrtimer_interrupt+0x489/0x5f0 [ 36.144833] irq_exit+0x1d3/0x210 [ 36.145136] smp_apic_timer_interrupt+0x76/0xa0 [ 36.145544] apic_timer_interrupt+0x9d/0xb0 [ 36.145923] [ 36.146121] RIP: 0010:native_safe_halt+0x6/0x10 [ 36.146521] RSP: 0018:ffff88006dadfdb0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 [ 36.147183] RAX: dffffc0000000000 RBX: 1ffff1000db5bfb9 RCX: 0000000000000000 [ 36.147806] RDX: 1ffffffff0b59160 RSI: 0000000000000001 RDI: ffffffff85ac8b00 [ 36.148431] RBP: ffff88006dadfdb0 R08: ffffffff85804a98 R09: 0000000000000000 [ 36.149065] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff85ac8af0 [ 36.149692] R13: ffff88006dadfe68 R14: 0000000000000000 R15: ffff88006dad4080 [ 36.150349] default_idle+0xbf/0x460 [ 36.150675] ? __sched_text_end+0x4/0x4 [ 36.151034] ? tick_nohz_idle_enter+0xde/0x160 [ 36.151714] arch_cpu_idle+0xa/0x10 [ 36.152561] default_idle_call+0x36/0x90 [ 36.152966] do_idle+0x256/0x3b0 [ 36.153266] cpu_startup_entry+0x18/0x20 [ 36.153653] start_secondary+0x277/0x310 [ 36.154057] secondary_startup_64+0xa5/0xa5 [ 36.154601] Dumping ftrace buffer: [ 36.154982] (ftrace buffer empty) [ 36.155311] Kernel Offset: disabled [ 36.155663] Rebooting in 86400 seconds..