Re: Cannot find new threads: generic error

[Laurent Carlier <lordheavym@gmail.com>]

Sorry if i break the thread, i find these mails wihile seraching about this 
problem.

I got the same problem when running gdb with a program using dlopen() too and 
under debian sid (the same problem occur under the last ubuntu release)

I've filled a bug report on debian bug tracking system:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=496494

So the output from gdb is:
lordh@debian:~/gb2projets/TunnelSDL$ gdb gbx3
GNU gdb 6.8-debian
Copyright (C) 2008 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-linux-gnu"...
(gdb) run -p
Starting program: /usr/local/bin/gbx3 -p
[Thread debugging using libthread_db enabled]
Error while reading shared library symbols:
Cannot find new threads: generic error
Cannot find new threads: generic error
(gdb) bt
#0  0x00007ff0873787b7 in dl_open_worker () from /lib64/ld-linux-x86-64.so.2
#1  0x00007ff087374366 in _dl_catch_error () from /lib64/ld-linux-x86-64.so.2
#2  0x00007ff0873780eb in _dl_open () from /lib64/ld-linux-x86-64.so.2
#3  0x00007ff086ee0fbb in dlopen_doit () from /lib/libdl.so.2
#4  0x00007ff087374366 in _dl_catch_error () from /lib64/ld-linux-x86-64.so.2
#5  0x00007ff086ee136c in _dlerror_run () from /lib/libdl.so.2
#6  0x00007ff086ee0f21 in dlopen@@GLIBC_2.2.5 () from /lib/libdl.so.2
#7  0x0000000000420685 in LIBRARY_load (lib=0x15dd400) at gbx_library.c:468
#8  0x0000000000441f4b in COMPONENT_load (comp=0x15dd3a0) at 
gbx_component.c:250
#9  0x0000000000441b22 in COMPONENT_load_all () at gbx_component.c:110
#10 0x000000000041fd5f in PROJECT_load () at gbx_project.c:456
#11 0x0000000000432d2e in init (file=0x446378 ".") at gbx.c:85
#12 0x00000000004332ef in main (argc=1, argv=0x7fff8f582968) at gbx.c:299
(gdb)

>>  [Thread debugging using libthread_db enabled]
>>  Error while reading shared library symbols:
>>  Cannot find new threads: generic error
>>
>> I'm using kernel 2.6.24 on a recent debian/unstable libc6.
>>
>> Where does that error come from?
>
>This is most often the result of either
>A. mismatch between libc.so.6 and libthread_db.so.1, or
>B. libpthread.so.0 being stripped.
>
>What does 'nm /lib/libpthread.so.0 | grep _version' say?

The output is:
lordh@debian:~$ nm /lib/libpthread.so.0 | grep _version
0000000000010420 r nptl_version

Regards,