20 cmBackTrace定位后无法分析出问题原因

发布于 2020-10-19 10:38:19 浏览：1983 订阅该版

代码会跑飞，一直没有排查到原因。后来加入了cmBackTrace组件，打印出了调用栈。但是根据这些信息我也无法判断那个代码出问题了。请大神帮忙看看有没有什么其他办法解决。

以下是串口打印信息
```
[2762764] D/pc_protocol.c line: 64 parse_pc_get_state
thread   pri  status      sp     stack size max used left tick  error
-------- ---  ------- ---------- ----------  ------  ---------- ---
time      11  suspend 0x00000094 0x00000200    28%   0x00000005 000
inscan    11  suspend 0x0000007c 0x00001000    13%   0x00000002 000
work       9  suspend 0x000000b4 0x00001000    13%   0x00000002 000
send      10  suspend 0x000001bc 0x00000400    46%   0x0000000f 000
recv      10  suspend 0x00000184 0x00000400    64%   0x00000009 000
uranus    10  suspend 0x000000c8 0x00000200    39%   0x00000010 000
uranus    10  suspend 0x00000098 0x00000200    29%   0x0000000b 000
uranus    10  suspend 0x00000198 0x00000400    39%   0x0000000f 000
uranus    10  suspend 0x000000c8 0x00000400    19%   0x00000010 000
key       10  suspend 0x00000080 0x00000800    06%   0x00000003 000
led       11  suspend 0x00000080 0x00000200    25%   0x00000005 000
uranus    10  suspend 0x000000c4 0x00000400    32%   0x00000010 000
uranus    10  suspend 0x00000094 0x00000400    16%   0x0000000e 000
uranus    10  suspend 0x00000194 0x00000800    23%   0x00000003 000
uranus    10  suspend 0x000000c4 0x00000800    11%   0x00000010 000
tshell    20  suspend 0x00000084 0x00001400    03%   0x00000009 000
tidle0    31  running 0x00000048 0x00000400    14%   0x00000012 000
main      10  suspend 0x00000094 0x00001000    11%   0x00000013 000
[2763659] E/cmb: 
[2763659] E/cmb: Firmware name: rtthread, hardware version: 1.0, software version: 1.0
[2763659] E/cmb: Fault on interrupt or bare metal(no OS) environment
[2763659] E/cmb: ===== Thread stack information =====
[2763659] E/cmb:   addr: 200051e0    data: deadbeef
[2763659] E/cmb:   addr: 200051e4    data: deadbeef
[2763659] E/cmb:   addr: 200051e8    data: 0000202c
[2763659] E/cmb:   addr: 200051ec    data: 2000000c
[2763659] E/cmb:   addr: 200051f0    data: 20005280
[2763659] E/cmb:   addr: 200051f4    data: ffffffff
[2763659] E/cmb:   addr: 200051f8    data: 00000000
[2763659] E/cmb:   addr: 200051fc    data: 08016fd7
[2763659] E/cmb:   addr: 20005200    data: 080002fc
[2763659] E/cmb:   addr: 20005204    data: 0100000f
[2763659] E/cmb:   addr: 20005208    data: 20003630
[2763659] E/cmb:   addr: 2000520c    data: 08005e7b
[2763659] E/cmb:   addr: 20005210    data: 20003630
[2763659] E/cmb:   addr: 20005214    data: fffffff1
[2763659] E/cmb:   addr: 20005218    data: 0000202c
[2763659] E/cmb:   addr: 2000521c    data: 2000000c
[2763659] E/cmb:   addr: 20005220    data: 20005280
[2763659] E/cmb:   addr: 20005224    data: ffffffff
[2763659] E/cmb:   addr: 20005228    data: 00000000
[2763659] E/cmb:   addr: 2000522c    data: 080067a1
[2763659] E/cmb:   addr: 20005230    data: 08020ff2
[2763659] E/cmb:   addr: 20005234    data: 01000036
[2763659] E/cmb:   addr: 20005238    data: ffffffff
[2763659] E/cmb:   addr: 2000523c    data: 00000004
[2763659] E/cmb:   addr: 20005240    data: deadbeef
[2763659] E/cmb:   addr: 20005244    data: deadbeef
[2763659] E/cmb:   addr: 20005248    data: deadbeef
[2763659] E/cmb:   addr: 2000524c    data: deadbeef
[2763659] E/cmb:   addr: 20005250    data: deadbeef
[2763659] E/cmb:   addr: 20005254    data: 080067a1
[2763659] E/cmb:   addr: 20005258    data: 00000004
[2763659] E/cmb:   addr: 2000525c    data: fffffffd
[2763659] E/cmb:   addr: 20005260    data: 20005280
[2763659] E/cmb:   addr: 20005264    data: 10000000
[2763659] E/cmb:   addr: 20005268    data: 00000000
[2763659] E/cmb:   addr: 2000526c    data: 2000111c
[2763659] E/cmb:   addr: 20005270    data: 0000000a
[2763659] E/cmb:   addr: 20005274    data: 08019f03
[2763659] E/cmb:   addr: 20005278    data: 08019f02
[2763659] E/cmb:   addr: 2000527c    data: 21000000
[2763659] E/cmb: ====================================
[2763659] E/cmb: =================== Registers information ====================
[2763659] E/cmb:   R0 : fffffff1  R1 : fffffff1  R2 : 20003630  R3 : 2000373c
[2763659] E/cmb:   R12: deadbeef  LR : deadbeef  PC : deadbeef  PSR: deadbeef
[2763659] E/cmb: ==============================================================
[2763659] E/cmb: Usage fault is caused by attempts to execute an undefined instruction
[2763659] E/cmb: Show more call stack info by run: addr2line -e rtthread.axf -a -f deadbeef 08016fd6 08005e7a 080067a
[2763659] E/cmb: Current system tick: 2763659

```
以下是addr2line  信息
```

Administrator@WIN-4GOFCAAFDB9 E:\cap\software_1.0\rt-thread\bsp\stm32\stm32f407-atk-explorer
$ arm-none-eabi-addr2line.exe addr2line -e rtthread.axf -a -f deadbeef 08016fd6 08005e7a 080067a
0x00000add
??
??:0
0xdeadbeef
??
??:0
0x08016fd6
rt_interrupt_enter
E:\cap\software_1.0\rt-thread\bsp\stm32\stm32f407-atk-explorer/..\..\..\src\irq.c:72
0x08005e7a
SysTick_Handler
E:\cap\software_1.0\rt-thread\bsp\stm32\stm32f407-atk-explorer/..\libraries\HAL_Drivers\/drv_common.c:48
0x0080067a
??
??:0

Administrator@WIN-4GOFCAAFDB9 E:\cap\software_1.0\rt-thread\bsp\stm32\stm32f407-atk-explorer
$

```
以下是代码 drv_common.c 48行

![image.png](/uploads/20201019/85956b348c9b01389bf830f989c0110d.png)