10 pc指针跑飞了，怎么排查故障点？

发布于 2021-01-22 14:20:15 浏览：1582 订阅该版

[tocm]

```
thread   pri  status      sp     stack size max used left tick  error
-------- ---  ------- ---------- ----------  ------  ---------- ---
mqtt0     10  suspend 0x000001f0 0x00001000    30%   0x00000002 000
wcommuni  28  running 0x00000180 0x00001000    46%   0x0000000f 000
wbroadca  27  suspend 0x000001b8 0x00000800    58%   0x00000003 000
mqde      24  suspend 0x00000168 0x00000800    72%   0x00000002 000
mqht      29  ready   0x00000448 0x00000800    81%   0x00000004 -02
mw_monit  30  suspend 0x00000094 0x00000800    34%   0x00000002 000
tshell    20  suspend 0x00000140 0x00001000    08%   0x00000006 000
telnet    26  suspend 0x00000180 0x00000800    26%   0x00000064 000
acon      19  suspend 0x000000e8 0x00000800    11%   0x00000064 000
ntp_sync  26  suspend 0x00000078 0x00000600    67%   0x00000002 000
sys_work  23  suspend 0x0000005c 0x00000800    41%   0x0000000a 000
tcpip     10  suspend 0x000000c8 0x00000400    82%   0x00000011 000
etx       12  suspend 0x00000094 0x00000400    14%   0x0000000e 000
erx       12  suspend 0x00000098 0x00000400    54%   0x00000002 000
tidle0    31  ready   0x00000054 0x00000100    51%   0x0000000f 000
main      10  suspend 0x0000010c 0x00000800    60%   0x00000009 000

Firmware name: rtthread, hardware version: 1.0, software version: 1.0

Fault on thread wcommuni?

===== Thread stack information =====
  addr: 20002d00    data: c2ab8cd9
  addr: 20002d04    data: a2e0ffae
  addr: 20002d08    data: bf925966
  addr: 20002d0c    data: 5c731b08
  addr: 20002d10    data: f9410beb
  addr: 20002d14    data: f1937087
  addr: 20002d18    data: 12ff1f0d
  addr: 20002d1c    data: cf3ae6e1
  addr: 20002d20    data: 60d5fdab
  addr: 20002d24    data: cd0bcea3
  addr: 20002d28    data: 701cc4fb
  addr: 20002d2c    data: a937f662
  addr: 20002d30    data: f70684a3
  addr: 20002d34    data: 95ebd7fb
  addr: 20002d38    data: f9e8ef9a
  addr: 20002d3c    data: ea770da7
  addr: 20002d40    data: 2fcfa47c
  addr: 20002d44    data: 7c945c37
  addr: 20002d48    data: 27d79df4
  addr: 20002d4c    data: c9372766
  addr: 20002d50    data: 92cf0dfe
  addr: 20002d54    data: a16e55f2
  addr: 20002d58    data: e8798d84
  addr: 20002d5c    data: eeb931cc
  addr: 20002d60    data: 2edf2918
  addr: 20002d64    data: 497d225e
  addr: 20002d68    data: 6223ebfe
  addr: 20002d6c    data: 7b209d9f
  addr: 20002d70    data: 282a1fda
  addr: 20002d74    data: c61c7b24
  addr: 20002d78    data: 447c10bf
  addr: 20002d7c    data: 1289aaf6
  addr: 20002d80    data: c86a00c4
  addr: 20002d84    data: 6dfaf23f
  addr: 20002d88    data: fac2c509
  addr: 20002d8c    data: db27f936
  addr: 20002d90    data: 49eee128
  addr: 20002d94    data: 3bcdba28
  addr: 20002d98    data: 3fbf699a
  addr: 20002d9c    data: 3af6497d
  addr: 20002da0    data: 25156a5e
  addr: 20002da4    data: 50037e7c
  addr: 20002da8    data: e3cfe932
  addr: 20002dac    data: f9f11bad
  addr: 20002db0    data: 315ebddf
  addr: 20002db4    data: 4bdbf7f9
  addr: 20002db8    data: 84bc759e
  addr: 20002dbc    data: e345e2ac
  addr: 20002dc0    data: e05ba179
  addr: 20002dc4    data: 276fb39c
  addr: 20002dc8    data: 566eddf5
  addr: 20002dcc    data: e1281bf3
  addr: 20002dd0    data: b59e73ff
  addr: 20002dd4    data: b31e43bf
  addr: 20002dd8    data: 38e7f80c
  addr: 20002ddc    data: ecd2d5df
  addr: 20002de0    data: 0ff1d07a
  addr: 20002de4    data: c5fbc4d8
  addr: 20002de8    data: f54fb539
  addr: 20002dec    data: a8dca225
  addr: 20002df0    data: 3c7c96d5
  addr: 20002df4    data: f97e3278
  addr: 20002df8    data: 9e43f3df
  addr: 20002dfc    data: 5b9eaf3c
  addr: 20002e00    data: fae3fcc9
  addr: 20002e04    data: 0fdd98df
  addr: 20002e08    data: 07ee2b64
  addr: 20002e0c    data: ffa83eda
  addr: 20002e10    data: 73fa1ca9
  addr: 20002e14    data: effe39e6
  addr: 20002e18    data: 7ce9ebc7
  addr: 20002e1c    data: 57d75809
  addr: 20002e20    data: 274e8fd8
  addr: 20002e24    data: dd9f27fd
  addr: 20002e28    data: 7cec5f0f
  addr: 20002e2c    data: 59702005
  addr: 20002e30    data: 5c0097d5
  addr: 20002e34    data: aba4cfe1
  addr: 20002e38    data: 541d4eaf
  addr: 20002e3c    data: a0f5cbc1
  addr: 20002e40    data: 1792c9ff
  addr: 20002e44    data: 4abeaedb
  addr: 20002e48    data: 3cf04201
  addr: 20002e4c    data: 4edfa69b
  addr: 20002e50    data: 6ff13f78
  addr: 20002e54    data: dc97aed5
  addr: 20002e58    data: ef3a930f
  addr: 20002e5c    data: b1fa0a9c
  addr: 20002e60    data: 5cccbc12
  addr: 20002e64    data: bc49957d
  addr: 20002e68    data: 35f5d602
  addr: 20002e6c    data: 76123ee3
  addr: 20002e70    data: feebe9dc
  addr: 20002e74    data: 9bebc288
  addr: 20002e78    data: 73c419fe
  addr: 20002e7c    data: 983f8925
  addr: 20002e80    data: 3f8354f5
  addr: 20002e84    data: 21e30c59
  addr: 20002e88    data: 77de1178
  addr: 20002e8c    data: 7ec8e3cf
  addr: 20002e90    data: e345fe4a
  addr: 20002e94    data: 1f6c7a9d
  addr: 20002e98    data: 33f3a7ac
  addr: 20002e9c    data: ff58ade4
  addr: 20002ea0    data: e377fca8
  addr: 20002ea4    data: f9673f2e
  addr: 20002ea8    data: 59ebf54b
  addr: 20002eac    data: e4f5f624
  addr: 20002eb0    data: f7fc5d3c
  addr: 20002eb4    data: 7a072e39
  addr: 20002eb8    data: bd9279d1
  addr: 20002ebc    data: 3f9d27cd
  addr: 20002ec0    data: 3f34ff34
  addr: 20002ec4    data: cdfd0f5c
  addr: 20002ec8    data: 3f959ab9
  addr: 20002ecc    data: 3f937d6e
  addr: 20002ed0    data: f4effb47
  addr: 20002ed4    data: e90f8c8f
  addr: 20002ed8    data: fd62178f
  addr: 20002edc    data: c5b0176e
  addr: 20002ee0    data: 05cfd795
  addr: 20002ee4    data: 5ff8b64c
  addr: 20002ee8    data: c8241f5e
  addr: 20002eec    data: 82cbde2d
  addr: 20002ef0    data: 353c72fa
  addr: 20002ef4    data: d2b765fe
  addr: 20002ef8    data: 0214f8a7
  addr: 20002efc    data: 330f9354
  addr: 20002f00    data: 5e8f5f57
  addr: 20002f04    data: fbeef6f3
  addr: 20002f08    data: 3f79b64f
  addr: 20002f0c    data: 7889fd73
  addr: 20002f10    data: cecb179f
  addr: 20002f14    data: 9561ea9e
  addr: 20002f18    data: bd03370f
  addr: 20002f1c    data: 4f8c3f48
  addr: 20002f20    data: c61bfac3
====================================

=================== Registers information ====================

R0 : 00000000  R1 : 20009c20  R2 : 20009290  R3 : 000000ae
  R12: 08044271  LR : 0800b527  PC : 7f562bf6  PSR: 40000000

==============================================================

Usage fault is caused by attempts to switch to an invalid state (e.g., ARM)

Show more call stack info by run: addr2line -e rtthread.axf -a -f 7f562bf6 0800b526

Current system tick: 632840
```

## 问题描述
+ 1.是系统工作一段时间之后才可能会出现这种错误。