[<ffffffff864094b6>] do_trap_ecall_u+0x396/0x530 arch/riscv/kernel/traps.c:343
[<ffffffff86432dae>] handle_exception+0x146/0x152 arch/riscv/kernel/entry.S:198
Code: 9bbe 8513 020b 8097 fb9c 80e7 d0c0 4785 8713 020b (202f) 00f7 
---[ end trace 0000000000000000 ]---
Kernel panic - not syncing: Fatal exception in interrupt
SMP: stopping secondary CPUs
----------------
Code disassembly (best guess):
   0:	9bbe                	add	s7,s7,a5
   2:	020b8513          	add	a0,s7,32
   6:	fb9c8097          	auipc	ra,0xfb9c8
   a:	d0c080e7          	jalr	-756(ra) # 0xfb9c7d12
   e:	4785                	li	a5,1
  10:	020b8713          	add	a4,s7,32
* 14:	00f7202f          	amoadd.w	zero,a5,(a4) <-- trapping instruction