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linux-core分析-柔性数组越界访问

news 来源：原创 2025/5/9 2:21:40

文章目录

- - core的调用栈
  - core分析
  - 修改
  - - 修改原因
    - 柔性数组定义
    - 代码修改
  - 总结

core的调用栈

vocb core 崩溃：core的大小都是573M左右
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x0000007f789af0d0 in strlen () from /lib/libc.so.6

[Current thread is 1 (LWP 1779)]
(gdb) bt
#0 0x0000007f789af0d0 in strlen () from /lib/libc.so.6
#1 0x0000007f7897e680 in vfprintf () from /lib/libc.so.6
#2 0x0000007f7899a15c in vsprintf () from /lib/libc.so.6
#3 0x0000007f77cd2644 in LogDebug (fi=0x7f77d03000 "jitter.c", li=709, modulename=0x7f77d02ff8 "SYNRTP",
    fmt=0x7f77d03198 "ch %d read from net, currentdepth = %u, timestamp = %u, length = %u, lostframe = %u, sq = %u, getframe = %u\n")
    at /mnt/hgfs/U/SMG2/yealink/trunk_b120u_r12151_DS-116021/Driver/codes/drivers/kernel/voip_537/common/common/logfile.h:105
#4 0x0000007f77cd40f8 in RTPJitterInput (pSession=0x3f9c8ee0, pbuf=0x7f76fe1798 "\200\b$s\t[8\376\as\274\016", '\325' <repeats 160 times>, "\177", nlen=172) at jitter.c:709
#5 0x0000007f77d6bfd4 in ProcessRTPData () at HwRTP.c:848
#6 0x0000007f77d6c23c in HwRTPThread () at HwRTP.c:1577
#7 0x0000007f799ae030 in ?? () from /lib/libpthread<