OpenSBI v0.4 (Jul  2 2019 11:53:53)
   ____                    _____ ____ _____
  / __ \                  / ____|  _ \_   _|
 | |  | |_ __   ___ _ __ | (___ | |_) || |
 | |  | | '_ \ / _ \ '_ \ \___ \|  _ < | |
 | |__| | |_) |  __/ | | |____) | |_) || |_
  \____/| .__/ \___|_| |_|_____/|____/_____|
        | |
        |_|

Platform Name          : QEMU Virt Machine
Platform HART Features : RV64ACDFIMSU
Platform Max HARTs     : 8
Current Hart           : 0
Firmware Base          : 0x80000000
Firmware Size          : 112 KB
Runtime SBI Version    : 0.1

PMP0: 0x0000000080000000-0x000000008001ffff (A)
PMP1: 0x0000000000000000-0xffffffffffffffff (A,R,W,X)
(THU.CST) os is loading ...

Special kernel symbols:
  entry  0xc0200036 (virtual)
  etext  0xc0206610 (virtual)
  edata  0xc02a0ed0 (virtual)
  end    0xc02ac458 (virtual)
Kernel executable memory footprint: 690KB
memory management: default_pmm_manager
physcial memory map:
  memory: 0x07e00000, [0x80200000, 0x87ffffff].
vapaofset is 18446744070488326144
check_alloc_page() succeeded!
check_pgdir() succeeded!
check_boot_pgdir() succeeded!
use SLOB allocator
kmalloc_init() succeeded!
check_vma_struct() succeeded!
Store/AMO page fault
page fault at 0x00000100: K/W
check_pgfault() succeeded!
check_vmm() succeeded.
SWAP: manager = fifo swap manager
BEGIN check_swap: count 1, total 31567
setup Page Table for vaddr 0X1000, so alloc a page
setup Page Table vaddr 0~4MB OVER!
set up init env for check_swap begin!
Store/AMO page fault
page fault at 0x00001000: K/W
Store/AMO page fault
page fault at 0x00002000: K/W
Store/AMO page fault
page fault at 0x00003000: K/W
Store/AMO page fault
page fault at 0x00004000: K/W
set up init env for check_swap over!
write Virt Page c in fifo_check_swap
write Virt Page a in fifo_check_swap
write Virt Page d in fifo_check_swap
write Virt Page b in fifo_check_swap
write Virt Page e in fifo_check_swap
Store/AMO page fault
page fault at 0x00005000: K/W
swap_out: i 0, store page in vaddr 0x1000 to disk swap entry 2
write Virt Page b in fifo_check_swap
write Virt Page a in fifo_check_swap
Store/AMO page fault
page fault at 0x00001000: K/W
swap_out: i 0, store page in vaddr 0x2000 to disk swap entry 3
swap_in: load disk swap entry 2 with swap_page in vadr 0x1000
write Virt Page b in fifo_check_swap
Store/AMO page fault
page fault at 0x00002000: K/W
swap_out: i 0, store page in vaddr 0x3000 to disk swap entry 4
swap_in: load disk swap entry 3 with swap_page in vadr 0x2000
write Virt Page c in fifo_check_swap
Store/AMO page fault
page fault at 0x00003000: K/W
swap_out: i 0, store page in vaddr 0x4000 to disk swap entry 5
swap_in: load disk swap entry 4 with swap_page in vadr 0x3000
write Virt Page d in fifo_check_swap
Store/AMO page fault
page fault at 0x00004000: K/W
swap_out: i 0, store page in vaddr 0x5000 to disk swap entry 6
swap_in: load disk swap entry 5 with swap_page in vadr 0x4000
write Virt Page e in fifo_check_swap
Store/AMO page fault
page fault at 0x00005000: K/W
swap_out: i 0, store page in vaddr 0x1000 to disk swap entry 2
swap_in: load disk swap entry 6 with swap_page in vadr 0x5000
write Virt Page a in fifo_check_swap
Load page fault
page fault at 0x00001000: K/R
swap_out: i 0, store page in vaddr 0x2000 to disk swap entry 3
swap_in: load disk swap entry 2 with swap_page in vadr 0x1000
check_swap() succeeded!
++ setup timer interrupts
kernel_execve: pid = 2, name = "forktest".
Breakpoint
I am child 31
I am child 30
I am child 29
I am child 28
I am child 27
I am child 26
I am child 25
I am child 24
I am child 23
I am child 22
I am child 21
I am child 20
I am child 19
I am child 18
I am child 17
I am child 16
I am child 15
I am child 14
I am child 13
I am child 12
I am child 11
I am child 10
I am child 9
I am child 8
I am child 7
I am child 6
I am child 5
I am child 4
I am child 3
I am child 2
I am child 1
I am child 0
forktest pass.
all user-mode processes have quit.
init check memory pass.
kernel panic at kern/process/proc.c:541:
    initproc exit.