pbuf_free: p-&gt;ref &gt; 0导致的大文件传输问题

发布于 2023-11-29 10:07:20 浏览：718 订阅该版

rtthread 版本： 5.0.0 + lwip 2.1.2
硬件平台： AT32F435 + RW007
使用agile_ftp传输文件时发现小与100k的文件上传下载不会出现问题，大文件上传不会出现问题，大文件下载就回出现问题，比如下载test.bin这个文件，提示信息如下：
```
pbuf_free: p->ref > 0
Assertion: 753 in rt-thread\components\net\lwip\lwip-2.1.2\src\core\pbuf.c, thread tcpip
```

```
msh /temp>ls
Directory /temp:
test.bin            1024000                  
ch3.json            60909                    
ch2.json            60930                    
ch1.json            80904                    
msh /temp>pbuf_free: p->ref > 0
Assertion: 753 in rt-thread\components\net\lwip\lwip-2.1.2\src\core\pbuf.c, thread tcpip
         pri  status      sp     stack size max used left tick  error
-------- ---  ------- ---------- ----------  ------  ---------- ---
ftpc      27  suspend 0x000007c8 0x00001000    59%   0x00000030 OK
ftp       27  suspend 0x00000138 0x00000800    34%   0x0000005f OK
telnet    25  suspend 0x000001ec 0x00000800    37%   0x00000002 OK
wifi_xfe   9  suspend 0x000000b0 0x00000800    31%   0x00000006 OK
wifi_han   8  suspend 0x000000a0 0x00000800    26%   0x00000001 OK
tshell    20  suspend 0x00000098 0x00001000    31%   0x00000007 OK
maintask  18  suspend 0x00000128 0x00001000    31%   0x00000005 OK
adc_moni  28  suspend 0x000000a8 0x00000800    08%   0x00000009 OK
wifimgnt  26  suspend 0x000000a8 0x00000800    34%   0x00000006 OK
tcpip     10  running 0x000001a4 0x00000800    55%   0x00000013 OK
etx       12  ready   0x00000078 0x00000800    10%   0x0000000d OK
erx       12  suspend 0x00000098 0x00000800    07%   0x00000010 OK
wlan      15  suspend 0x0000005c 0x00000800    32%   0x00000004 OK
sys work  23  suspend 0x0000005c 0x00000800    54%   0x0000000a OK
tidle0    31  ready   0x00000048 0x00000100    62%   0x0000000e OK
timer      4  suspend 0x00000064 0x00000200    31%   0x00000009 OK
main      10  suspend 0x000000a4 0x00000800    60%   0x0000000b OK
```