一、报错信息

[2023-7]--[ Debug ]--Destroy DqlResult Struct OK
[2023-7]--[ Debug ]--Destroy Moia Base Job       : OK
[2023-7]--[ Debug ]--Destroy Moia Base Job       : OK
[2023-7]--[ Debug ]--Destroy Moia Base Job       : OK
[2023-7]--[ Debug ]--Destroy Moia Job            : OK
[2023-7]--[ Debug ]--Destroy Moia Base Job       : OK
[2023-7]--[ Debug ]--Destroy Moia Base Job       : OK
[2023-7]--[ Debug ]--Destroy Moia Base Job       : OK
[2023-7]--[ Debug ]--Destroy Moia Job            : OK
[2023-7]--[ Debug ]--Destroy Moia Base Job       : OK
*** Error in `../ExecuteFile/TestMoiaTableCode': munmap_chunk(): invalid pointer: 0x0000000002070150 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x7f474)[0x7ff60d7dd474]
../ExecuteFile/TestMoiaTableCode[0x402aec]
../ExecuteFile/TestMoiaTableCode[0x402e0c]
../ExecuteFile/TestMoiaTableCode[0x402f9d]
../ExecuteFile/TestMoiaTableCode[0x4050bf]
../ExecuteFile/TestMoiaTableCode[0x4050e0]
/lib64/libc.so.6(__libc_start_main+0xf5)[0x7ff60d780555]
../ExecuteFile/TestMoiaTableCode[0x400e79]
======= Memory map: ========
00400000-00407000 r-xp 00000000 fd:00 4662                               /opt/Developer/Moia/ExecuteFile/TestMoiaTableCode
00606000-00607000 r--p 00006000 fd:00 4662                               /opt/Developer/Moia/ExecuteFile/TestMoiaTableCode已放弃(吐核)

我在原有正常代码的基础上添加了一段逻辑，再跑，在释放内存时，出现了上述错误。

查看网上的这个错误解释：程序试图释放一个无效的内存地址。会出现此错误。

看完还是一脸懵。

二、GDB调试

[gbase@czg2 Src]$ gdb ../ExecuteFile/TestMoiaTableCode core.29250 
GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-120.el7
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /opt/Developer/Moia/ExecuteFile/TestMoiaTableCode...done.

warning: core file may not match specified executable file.
[New LWP 29250]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `../ExecuteFile/TestMoiaTableCode'.
Program terminated with signal 6, Aborted.
#0  0x00007ff60d794387 in raise () from /lib64/libc.so.6
Missing separate debuginfos, use: debuginfo-install glibc-2.17-326.el7_9.x86_64 libgcc-4.8.5-44.el7.x86_64 sssd-client-1.16.5-10.el7_9.13.x86_64
(gdb) 
(gdb) bt
#0  0x00007ff60d794387 in raise () from /lib64/libc.so.6
#1  0x00007ff60d795a78 in abort () from /lib64/libc.so.6
#2  0x00007ff60d7d6f67 in __libc_message () from /lib64/libc.so.6
#3  0x00007ff60d7dd474 in malloc_printerr () from /lib64/libc.so.6
#4  0x0000000000402aec in DestroyMoiaBaseJob (MBJ=0x206c138) at MoiaTableCode.c:59
#5  0x0000000000402e0c in DestroyMoiaJob (MJ=0x206c130) at MoiaTableCode.c:115
#6  0x0000000000402f9d in DestroyMoiaTableSets (MTS=0x7ffed9acffd8) at MoiaTableCode.c:149
#7  0x00000000004050bf in CleanConfigTableData () at DbOperate.c:50
#8  0x00000000004050e0 in main () at main.c:15
(gdb) f 4
#4  0x0000000000402aec in DestroyMoiaBaseJob (MBJ=0x206c138) at MoiaTableCode.c:59
59          free((*MBJ)->ExecuteCalendar);
(gdb) quit

看上图中的报错处，看不出什么问题，因为在加新逻辑之前是正常销毁的，这时想到报错是否和之前写那段逻辑有关。