bash-4.3$ kernel panic at kern/src/rcu.c:325, from core 3: HW TRAP frame at 0xfffffff00002cf40 on core 2
assertion failed: rpi->gp_acked + 1 == READ_ONCE(rsp->gpnum)  rax  0x000000000000003d
  rbx  0xffffffffc8667ec0
Stack Backtrace on Core 3:
  rcx  0xffffffffc8667ec8
#01 [<0xffffffffc200a3b7>] in backtrace at src/kdebug.c:219
  rdx  0x000000271c4914eb
#02 [<0xffffffffc2009b7c>] in _panic at src/init.c:266
  rbp  0xfffffff000085fd8
#03 [<0xffffffffc20502f9>] in rcu_report_qs_rpi at src/rcu.c:325
  rsi  0x0000000000000003
#04 [<0xffffffffc2050c4c>] in rcu_report_qs at src/rcu.c:340
  rdi  0xffffffffc8667ec0
#05 [<0xffffffffc2054363>] in __smp_idle at src/smp.c:75
  r8   0x0000000000000000
  r9   0xffffffffc8667fb8
  r10  0x0000000000000078
  r11  0xffffffffc8667f78
  r12  0xffff800002187d20
  r13  0x0000000000000002
  r14  0x0000000000000000
  r15  0x0000000000000002
  trap 0x00000008 Double Fault
  gsbs 0xffffffffc8667ec0
ROS(Core 3)>   fsbs 0x0000000000000000
  err  0x--------00000000
  rip  0xffffffffc209f2c1
  cs   0x------------0008
  flag 0x0000000000010246
  rsp  0xfffffff000085fd8
  ss   0x------------0010
Backtrace of kernel context on Core 2:
#01 [<0xffffffffc209f2c1>] in cpu_halt at arch/x86/idle.c:20
#02 [<0xffffffffc205442a>] in __smp_idle at src/smp.c:84
kernel panic at kern/arch/x86/trap.c:541, from core 2: Double fault!  Check the kernel stack pointer; you likely ran off the end of the stack.
Stack Backtrace on Core 2:
#01 [<0xffffffffc200a3b7>] in backtrace at src/kdebug.c:219
#02 [<0xffffffffc2009b7c>] in _panic at src/init.c:266
#03 [<0xffffffffc20aa253>] in handle_double_fault at arch/x86/trap.c:541