在core文件中出现的lauxlib.c: No such file or directory

[Dear-u]

调试core文件的堆栈信息如下

Program terminated with signal 11, Segmentation fault.
#0 resizebox (L=0x7f78ea2c3c28, idx=, newsize=4096) at lauxlib.c:477
477 lauxlib.c: No such file or directory.
in lauxlib.c
Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.192.el6.x86_64 libgcc-4.4.7-18.el6.x86_64 libstdc++-4.4.7-18.el6.x86_64
(gdb) bt
#0 resizebox (L=0x7f78ea2c3c28, idx=, newsize=4096) at lauxlib.c:477
#1 0x00000000004272a5 in prepbuffsize (B=0x7f7909bf92f0, sz=, boxidx=-2) at lauxlib.c:546
#2 0x0000000000427411 in luaL_addvalue (B=0x7f7909bf92f0) at lauxlib.c:613
#3 0x00007f79059fb120 in TableToString (L=0x7f78ea2c3c28, b=0x7f7909bf92f0, idx=-1, level=0) at src/lua-trace.c:18
#4 value2string (L=0x7f78ea2c3c28, b=0x7f7909bf92f0, idx=-1, level=0) at src/lua-trace.c:86
#5 0x00007f79059fb325 in StackTraceBack (L=0x7f78ea2c3c28) at src/lua-trace.c:161
#6 0x0000000000415c9d in luaD_precall (L=0x7f78ea2c3c28, func=0x7f78ea2da8c0, nresults=1) at ldo.c:503
#7 0x0000000000415d9f in ccall (L=0x7f78ea2c3c28, func=, nResults=, inc=65537) at ldo.c:546
#8 0x0000000000413d5d in luaG_errormsg (L=0x7f78ea2c3c28) at ldebug.c:761
#9 0x0000000000413ebf in luaG_runerror (L=0x7f78ea2c3c28, fmt=) at ldebug.c:777
#10 0x00000000004144cc in luaG_typeerror (L=0x7f78ea2c3c28, o=0x7f78ea2da850, op=0x4b5aec "perform arithmetic on") at ldebug.c:696
#11 0x00000000004144f3 in luaG_opinterror (L=0x7f78ea2c3c28, p1=0x0, p2=0xfffffffe, msg=0x1000 <Address 0x1000 out of bounds>) at ldebug.c:716
#12 0x0000000000420896 in luaT_trybinTM (L=0x7f78ea2c3c28, p1=0x7f78ea2da850, p2=0x7f78f580d3b0, res=, event=TM_DIV) at ltm.c:161
#13 0x000000000042447f in luaV_execute (L=, ci=) at lvm.c:1485
#14 0x0000000000415db5 in ccall (L=0x7f78ea2c3c28, func=, nResults=, inc=1) at ldo.c:548
#15 0x0000000000412525 in lua_pcallk (L=0x7f78ea2c3c28, nargs=, nresults=-1, errfunc=, ctx=,
k=) at lapi.c:1045
#16 0x000000000042b80f in luaB_xpcall (L=0x7f78ea2c3c28) at lbaselib.c:472
#17 0x0000000000415c9d in luaD_precall (L=0x7f78ea2c3c28, func=0x7f78ea2da120, nresults=2) at ldo.c:503
#18 0x0000000000423c68 in luaV_execute (L=, ci=) at lvm.c:1617
#19 0x0000000000415a03 in unroll (L=0x7f78ea2c3c28, ud=) at ldo.c:613
#20 0x0000000000414df9 in luaD_rawrunprotected (L=0x7f78ea2c3c28, f=0x415df0 , ud=0x7f7909bf9e0c) at ldo.c:147
#21 0x0000000000416144 in lua_resume (L=0x7f78ea2c3c28, from=, nargs=4, nresults=0x7f7909bf9e8c) at ldo.c:716
#22 0x00007f792e5fc44a in lua_resumeX (L=0x7f7904256308, co_index=1, n=) at service-src/service_snlua.c:90
#23 auxresume (L=0x7f7904256308, co_index=1, n=) at service-src/service_snlua.c:146
#24 timing_resume (L=0x7f7904256308, co_index=1, n=) at service-src/service_snlua.c:198
#25 0x00007f792e5fc740 in luaB_coresume (L=0x7f7904256308) at service-src/service_snlua.c:217
#26 0x0000000000415c9d in luaD_precall (L=0x7f7904256308, func=0x7f78f322d1e0, nresults=-1) at ldo.c:503
#27 0x0000000000423d5b in luaV_execute (L=, ci=) at lvm.c:1649
#28 0x0000000000415db5 in ccall (L=0x7f7904256308, func=, nResults=, inc=65537) at ldo.c:548
#29 0x0000000000414df9 in luaD_rawrunprotected (L=0x7f7904256308, f=0x412560 <f_call>, ud=0x7f7909bfa1d0) at ldo.c:147
#30 0x0000000000415f4f in luaD_pcall (L=0x7f7904256308, func=, u=, old_top=192, ef=) at ldo.c:784
#31 0x0000000000412479 in lua_pcallk (L=0x7f7904256308, nargs=, nresults=-1, errfunc=, ctx=,
k=) at lapi.c:1033
#32 0x000000000042b8f0 in luaB_pcall (L=0x7f7904256308) at lbaselib.c:455
#33 0x0000000000415c9d in luaD_precall (L=0x7f7904256308, func=0x7f78f322d0a0, nresults=2) at ldo.c:503
#34 0x0000000000423c68 in luaV_execute (L=, ci=) at lvm.c:1617
#35 0x0000000000415db5 in ccall (L=0x7f7904256308, func=, nResults=, inc=65537) at ldo.c:548
#36 0x0000000000414df9 in luaD_rawrunprotected (L=0x7f7904256308, f=0x412560 <f_call>, ud=0x7f7909bfa4f0) at ldo.c:147
#37 0x0000000000415f4f in luaD_pcall (L=0x7f7904256308, func=, u=, old_top=48, ef=) at ldo.c:784
#38 0x0000000000412479 in lua_pcallk (L=0x7f7904256308, nargs=, nresults=0, errfunc=, ctx=,
k=) at lapi.c:1033
#39 0x00007f79057e2103 in _cb (context=0x7f791e5dcf80, ud=0x7f7904256308, type=1, session=75466, source=0, msg=0x0, sz=0) at lualib-src/lua-skynet.c:75
#40 0x0000000000409d2d in dispatch_message (ctx=0x7f791e5dcf80, msg=0x7f7909bfa5d0) at skynet-src/skynet_server.c:274

---

按照堆栈调用结果应该是分配内存失败了，但是为什么会有 477 lauxlib.c: No such file or directory 这种错误提示呢？
希望大佬能解释一下

[hanxi]

首先建议学一下 markdown 语法， 477 lauxlib.c: No such file or directory 是 gdb 找不到 lauxlib.c 源代码文件。 报错在 lauxlib.c 的 477 行。

[hanxi]

顺便推荐一个工具给你调试吧，可以用来查看 Lua 函数堆栈。 https://github.com/xjdrew/lua-gdb

[Dear-u]

顺便推荐一个工具给你调试吧，可以用来查看 Lua 函数堆栈。 https://github.com/xjdrew/lua-gdb

谢谢，工具中有几个问题已经反馈到issues里了

[Dear-u]

今天查了下这个dump，发现了一个问题有点想不明白，代码文件如下

代码文件

  1 
  2 return function(args, src, tag, scfg)
  3     local condition_id = args[1]
  4     local obj = args[2] == 0 and src or tag
  5     local judge = args[3]
  6     local hp_percent = args[4] / 1000
  7     
  8     ... -- other code here.
  9     
 10 end 

在第6行代码，如果args[4]不存在，会导致进程宕掉，也就是前面贴出的dump堆栈
在lua中难道不是输出错误堆栈信息？！
不知道大佬们有没有遇到过？求解答

[cloudfreexiao]

不存在 是 啥意思 ？ nil ？
我猜测 你是 有啥 c 库 把 内存 写坏了
参考 下 #1106

[Dear-u]

是三方插进导致的