------------[ cut here ]------------
WARNING: CPU: 1 PID: 0 at net/sched/sch_generic.c:320 dev_watchdog+0x821/0xa10 net/sched/sch_generic.c:319
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.13.0-rc7-next-20170829+ #11
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:16 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:52
 panic+0x1e4/0x41c kernel/panic.c:181
 __warn+0x1c4/0x1e0 kernel/panic.c:542
 report_bug+0x211/0x2d0 lib/bug.c:183
 fixup_bug+0x40/0x90 arch/x86/kernel/traps.c:190
 do_trap_no_signal arch/x86/kernel/traps.c:224 [inline]
 do_trap+0x260/0x390 arch/x86/kernel/traps.c:273
 do_error_trap+0x120/0x390 arch/x86/kernel/traps.c:310
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:323
 invalid_op+0x18/0x20 arch/x86/entry/entry_64.S:929
RIP: 0010:dev_watchdog+0x821/0xa10 net/sched/sch_generic.c:319
RSP: 0018:ffff88003ed077b8 EFLAGS: 00010286
RAX: 0000000000000039 RBX: ffff88006b2c14c0 RCX: 0000000000000000
RDX: 0000000000000039 RSI: 1ffff10007da0eb7 RDI: ffffed0007da0eeb
RBP: ffff88003ed078b8 R08: ffff88003ed06ea8 R09: 0000000000000000
R10: ffff88003e04e340 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88006b2c19a0 R15: ffff88006b6b8500
 call_timer_fn+0x246/0x850 kernel/time/timer.c:1281
 expire_timers kernel/time/timer.c:1320 [inline]
 __run_timers+0x7fd/0xb90 kernel/time/timer.c:1620
 run_timer_softirq+0x4c/0xb0 kernel/time/timer.c:1646
 __do_softirq+0x2bd/0xbd4 kernel/softirq.c:284
 invoke_softirq kernel/softirq.c:364 [inline]
 irq_exit+0x1d3/0x210 kernel/softirq.c:405
 exiting_irq arch/x86/include/asm/apic.h:638 [inline]
 smp_apic_timer_interrupt+0x76/0xa0 arch/x86/kernel/apic/apic.c:1044
 apic_timer_interrupt+0x9d/0xb0 arch/x86/entry/entry_64.S:577
 </IRQ>
RIP: 0010:native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:53
RSP: 0018:ffff88003e057db0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10
RAX: dffffc0000000000 RBX: 1ffff10007c0afb9 RCX: 0000000000000000
RDX: 1ffffffff0b592f8 RSI: 0000000000000001 RDI: ffffffff85ac97c0
RBP: ffff88003e057db0 R08: ffffffff857e9a88 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff85ac97b0
R13: ffff88003e057e68 R14: 0000000000000000 R15: ffff88003e04e340
 arch_safe_halt arch/x86/include/asm/paravirt.h:98 [inline]
 default_idle+0xbf/0x460 arch/x86/kernel/process.c:341
 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:332
 default_idle_call+0x36/0x90 kernel/sched/idle.c:98
 cpuidle_idle_call kernel/sched/idle.c:156 [inline]
 do_idle+0x256/0x3b0 kernel/sched/idle.c:246
 cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:351
 start_secondary+0x277/0x310 arch/x86/kernel/smpboot.c:275
 secondary_startup_64+0xa5/0xa5 arch/x86/kernel/head_64.S:235
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..