gdb：找不到新线程：泛型错误 [英] gdb: Cannot find new threads: generic error

问题描述

注意：当我运行GDB时，加载一个链接到pthread的.so的程序，GDB报告错误找不到新线程：通用错误。我运行的可执行文件不与pthreads相关联。

任何线索？

 
 $ gdb --args lua -lluarocks.require 
 GNU gdb（GDB）7.0-ubuntu 
版权所有（C）2009免费软件基金会，
许可证GPLv3 +：GNU GPL版本3或以后
这是免费软件：您可以随意更改并重新分发。 
在法律允许的范围内，没有任何保证。输入显示复制
和显示保修的详细信息。 
这个GDB被配置为x86_64-linux-gnu。 
有关错误报告说明，请参阅：
< http：//www.gnu.org/software/gdb/bugs/> ... 
从/ usr / bin读取符号/lua...(no调试符号找到）...完成。 
（gdb）运行
启动程序：/ usr / bin / lua -lluarocks.require 
 Lua 5.1.4版权所有（C）1994-2008 Lua.org，PUC-Rio 
> require'ev'
 [使用libthread_db启用线程调试] 
找不到新线程：通用错误
（gdb）q 
调试会话是活动的。 
 
下一个[process 4986]将被杀死。 
 
反正退出？ （y或n）y 
 

此函数在 require'ev' ：

http://github.com/brimworks/lua-ev/blob/master/lua_ev.c#L25-65

有关我的系统：

 
 $ uname -a 
 Linux本地主机2.6.31-20通用＃58-Ubuntu SMP Fri Mar 12 04:38:19 UTC 2010 x86_64 GNU / Linux 
 

 
 $ lsb_release -a 
无LSB模块可用。 
分销商ID：Ubuntu 
说明：Ubuntu 9.10 
发行：9.10 
代号：karmic 
 

解决方案

这也可以：

LD_PRELOAD = / lib / libpthread.so.0 gdb --args ./app

When I run GDB against a program which loads a .so which is linked to pthreads, GDB reports error "Cannot find new threads: generic error".

Note that executable that I run is not linked with pthreads.

Any clues?

$ gdb --args lua -lluarocks.require
GNU gdb (GDB) 7.0-ubuntu
Copyright (C) 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later 
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-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/bin/lua...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/bin/lua -lluarocks.require
Lua 5.1.4  Copyright (C) 1994-2008 Lua.org, PUC-Rio
> require 'ev'
[Thread debugging using libthread_db enabled]
Cannot find new threads: generic error
(gdb) q
A debugging session is active.

    Inferior 1 [process 4986] will be killed.

Quit anyway? (y or n) y

This function gets called on require 'ev':

http://github.com/brimworks/lua-ev/blob/master/lua_ev.c#L25-65

Additional information about my system:

$ uname -a
Linux localhost 2.6.31-20-generic #58-Ubuntu SMP Fri Mar 12 04:38:19 UTC 2010 x86_64 GNU/Linux

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 9.10
Release:    9.10
Codename:   karmic

解决方案

This also works:

LD_PRELOAD=/lib/libpthread.so.0 gdb --args ./app

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