kernel panic at kern/arch/x86/trap.c:540, from core 3: Double fault!  Check the kernel stack pointer; you likely ran off the end of the stack.
HW TRAP frame at 0xfffffff000023f40 on core 3
  rax  0x000000000000003d
  rbx  0xffffffffc8668140
  rcx  0xffffffffc8668148
  rdx  0x00000029b2b7795b
  rbp  0xfffffff000085fd8
  rsi  0x0000000000000003
  rdi  0xffffffffc8668140
  r8   0x0000000000000000
  r9   0xfffffff000085e50
  r10  0x0000000000000018
  r11  0xfffffff000085e70
  r12  0x0000000000000000
  r13  0xffffffffc8662080
  r14  0xffffffffc8668288
  r15  0xffffffffc8665198
  trap 0x00000008 Double Fault
  gsbs 0xffffffffc8668140
  fsbs 0x0000000000000000
  err  0x--------00000000
  rip  0xffffffffc209f6c1
  cs   0x------------0008
  flag 0x0000000000010246
  rsp  0xfffffff000085fd8
  ss   0x------------0010
Backtrace of kernel context on Core 3:
#01 [<0xffffffffc209f6c1>] in cpu_halt at arch/x86/idle.c:20
#02 [<0xffffffffc2054706>] in __smp_idle at src/smp.c:84
kernel panic at kern/src/rcu.c:323, from core 2: assertion failed: rpi->gp_acked + 1 == READ_ONCE(rsp->gpnum)
Stack Backtrace on Core 2:
#01 [<0xffffffffc200a2bc>] in backtrace at src/kdebug.c:220
#02 [<0xffffffffc2009afd>] in _panic at src/init.c:268
#03 [<0xffffffffc20504fb>] in rcu_report_qs_rpi at src/rcu.c:323
#04 [<0xffffffffc2050edc>] in rcu_report_qs at src/rcu.c:338
#05 [<0xffffffffc2054633>] in __smp_idle at src/smp.c:75