Debian GNU/Linux 7 syzkaller ttyS0 2017/08/29 12:50:31 fuzzer started 2017/08/29 12:50:31 dialing manager at 10.0.2.10:39682 syzkaller login: [ 31.200103] NETDEV WATCHDOG: eth0 (e1000): transmit queue 0 timed out [ 31.200996] ------------[ cut here ]------------ [ 31.201449] WARNING: CPU: 1 PID: 0 at net/sched/sch_generic.c:320 dev_watchdog+0x821/0xa10 [ 31.202260] Kernel panic - not syncing: panic_on_warn set ... [ 31.202260] [ 31.202888] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.13.0-rc7-next-20170829+ #11 [ 31.203526] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 31.204204] Call Trace: [ 31.204420] [ 31.204598] dump_stack+0x194/0x257 [ 31.204895] ? arch_local_irq_restore+0x53/0x53 [ 31.205289] panic+0x1e4/0x41c [ 31.205560] ? refcount_error_report+0x214/0x214 [ 31.205943] ? show_regs_print_info+0x65/0x65 [ 31.206334] ? dev_watchdog+0x821/0xa10 [ 31.206645] __warn+0x1c4/0x1e0 [ 31.206913] ? dev_watchdog+0x821/0xa10 [ 31.207258] report_bug+0x211/0x2d0 [ 31.207556] fixup_bug+0x40/0x90 [ 31.207835] do_trap+0x260/0x390 [ 31.208283] do_error_trap+0x120/0x390 [ 31.208609] ? vprintk_emit+0x49b/0x590 [ 31.208994] ? do_trap+0x390/0x390 [ 31.209363] ? dev_watchdog+0x821/0xa10 [ 31.209748] ? vprintk_emit+0x3ea/0x590 [ 31.210190] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.210665] do_invalid_op+0x1b/0x20 [ 31.211018] invalid_op+0x18/0x20 [ 31.211375] RIP: 0010:dev_watchdog+0x821/0xa10 [ 31.211810] RSP: 0018:ffff88003ed077b8 EFLAGS: 00010286 [ 31.212371] RAX: 0000000000000039 RBX: ffff88006b1bcb80 RCX: 0000000000000000 [ 31.213056] RDX: 0000000000000039 RSI: 1ffff10007da0eb7 RDI: ffffed0007da0eeb [ 31.213768] RBP: ffff88003ed078b8 R08: ffff88003ed06ea8 R09: 0000000000000000 [ 31.214499] R10: ffff88003e04e340 R11: 0000000000000000 R12: 0000000000000000 [ 31.215220] R13: dffffc0000000000 R14: ffff88006b1bd060 R15: ffff88006b75b540 [ 31.215963] ? dev_watchdog+0x821/0xa10 [ 31.216398] ? qdisc_rcu_free+0x110/0x110 [ 31.216810] ? __lock_is_held+0xbc/0x140 [ 31.217242] call_timer_fn+0x246/0x850 [ 31.217624] ? qdisc_rcu_free+0x110/0x110 [ 31.218022] ? __next_timer_interrupt+0x150/0x150 [ 31.218506] ? lock_downgrade+0x990/0x990 [ 31.218905] ? update_max_interval+0x60/0x60 [ 31.219364] ? __run_timers+0x1ce/0xb90 [ 31.219757] ? do_raw_spin_trylock+0x190/0x190 [ 31.222254] ? __lock_is_held+0xbc/0x140 [ 31.222703] ? qdisc_rcu_free+0x110/0x110 [ 31.223249] ? trace_hardirqs_on_caller+0x19e/0x5c0 [ 31.223827] ? qdisc_rcu_free+0x110/0x110 [ 31.224409] __run_timers+0x7fd/0xb90 [ 31.224866] ? del_timer_sync+0x240/0x240 [ 31.225443] ? lock_acquire+0x1d5/0x580 [ 31.225897] ? __hrtimer_run_queues+0x385/0xe10 [ 31.226592] ? find_held_lock+0x39/0x1d0 [ 31.228520] ? lock_downgrade+0x990/0x990 [ 31.229011] ? lock_acquire+0x1d5/0x580 [ 31.229534] ? clockevents_program_event+0x163/0x2e0 [ 31.230164] ? pvclock_read_flags+0x160/0x160 [ 31.230681] ? rcu_pm_notify+0xc0/0xc0 [ 31.231341] run_timer_softirq+0x4c/0xb0 [ 31.233893] __do_softirq+0x2bd/0xbd4 [ 31.234426] ? __softirqentry_text_start+0x8/0x8 [ 31.234955] ? native_apic_msr_write+0x5c/0x80 [ 31.235570] ? lapic_next_event+0x5a/0x90 [ 31.236099] ? clockevents_program_event+0x108/0x2e0 [ 31.236693] ? tick_program_event+0x7f/0xd0 [ 31.237353] ? hrtimer_interrupt+0x489/0x5f0 [ 31.238878] irq_exit+0x1d3/0x210 [ 31.239334] smp_apic_timer_interrupt+0x76/0xa0 [ 31.239846] apic_timer_interrupt+0x9d/0xb0 [ 31.240590] [ 31.241081] RIP: 0010:native_safe_halt+0x6/0x10 [ 31.241927] RSP: 0018:ffff88003e057db0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 [ 31.243703] RAX: dffffc0000000000 RBX: 1ffff10007c0afb9 RCX: 0000000000000000 [ 31.244612] RDX: 1ffffffff0b592f8 RSI: 0000000000000001 RDI: ffffffff85ac97c0 [ 31.245483] RBP: ffff88003e057db0 R08: ffffffff857e9a88 R09: 0000000000000000 [ 31.246428] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff85ac97b0 [ 31.247240] R13: ffff88003e057e68 R14: 0000000000000000 R15: ffff88003e04e340 [ 31.247947] default_idle+0xbf/0x460 [ 31.248371] ? __sched_text_end+0x4/0x4 [ 31.248759] ? tick_nohz_idle_enter+0xde/0x160 [ 31.249340] arch_cpu_idle+0xa/0x10 [ 31.249757] default_idle_call+0x36/0x90 [ 31.251298] do_idle+0x256/0x3b0 [ 31.252022] cpu_startup_entry+0x18/0x20 [ 31.252932] start_secondary+0x277/0x310 [ 31.253795] secondary_startup_64+0xa5/0xa5 [ 31.255082] Dumping ftrace buffer: [ 31.255942] (ftrace buffer empty) [ 31.256824] Kernel Offset: disabled [ 31.257522] Rebooting in 86400 seconds..