kernel panic at kern/arch/x86/trap.c:540, from core 2: Double fault!  Check the kernel stack pointer; you likely ran off the end of the stack.
HW TRAP frame at 0xfffffff000020f40 on core 2
  rax  0x0000000000000000
  rbx  0xffff80000d430620
  rcx  0x000000000000080f
  rdx  0x0000000000000000
  rbp  0xfffffff0000a3ee0
  rsi  0x0000000000000000
  rdi  0x0000000000000000
  r8   0x0000000000000000
  r9   0xffffffffc8667fb8
  r10  0x0000000000000078
  r11  0xffffffffc8667f78
  r12  0x0000000000000002
  r13  0xffffffffc8667ec0
  r14  0xfffffff0000a3f10
  r15  0x0000000000000002
  trap 0x00000008 Double Fault
  gsbs 0xffffffffc8667ec0
  fsbs 0x0000000000000000
  err  0x--------00000000
  rip  0xffffffffc20aa278
  cs   0x------------0008
  flag 0x0000000000010246
  rsp  0xfffffff0000a3ec0
  ss   0x------------0010
Backtrace of kernel context on Core 2:
#01 [<     [inline]     >] in enable_irq at include/arch/arch.h:94
#01 [<0xffffffffc20aa278>] in irq_dispatch at arch/x86/trap.c:716
#02 [<0xffffffffc20aac1a>] in handle_irq at arch/x86/trap.c:752