gdb problem with kernel 2.6.0 and pthreads

gdb problem with kernel 2.6.0 and pthreads

[Maarten de Boer]

Hello,

Sorry for cross-posting, but I have a problem that I am not sure whom
to address... Google did not reveal anything helpfull.

I resently moved to kernel 2.6.0 (on Debian Sarge), and while everything
seems to work just fine, to my surprise gdb now fails to debug
executables that are linked against pthread:

GNU gdb 5.3-debian
[snip]
This GDB was configured as "i386-linux"...
(gdb) b main
Breakpoint 1 at 0x80483a4: file foo.c, line 3.
(gdb) r
Starting program: /root/a.out
Error while reading shared library symbols:
Cannot find new threads: capability not available
Cannot find user-level thread for LWP 714: capability not available

With kernel 2.4.22 this problem did not occur. Do you have any idea what
may have caused this problem, and how to solve it? If I can provide you
with any information that could be helpfull, please let me know.

Kind regards,

Maarten

gcc version 3.3.2 (Debian)
GNU gdb 5.3-debian
GNU libc 2.3.2

Re: gdb problem with kernel 2.6.0 and pthreads

[Daniel Jacobowitz]

On Wed, Jan 07, 2004 at 05:49:32PM +0100, Maarten de Boer wrote:
> Hello,
> 
> Sorry for cross-posting, but I have a problem that I am not sure whom
> to address... Google did not reveal anything helpfull.
> 
> I resently moved to kernel 2.6.0 (on Debian Sarge), and while everything
> seems to work just fine, to my surprise gdb now fails to debug
> executables that are linked against pthread:
> 
> GNU gdb 5.3-debian

If you are using Sarge, try the GDB from unstable instead.  I'll see
about getting 6.0 into testing.

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer

Re: gdb problem with kernel 2.6.0 and pthreads

[Maarten de Boer]

As suggested by several people, moving to gdb 6.0 solves the problem,
so for the record.

Thanks,

Maarten

> Hello,
>
> Sorry for cross-posting, but I have a problem that I am not sure whom
> to address... Google did not reveal anything helpfull.
>
> I resently moved to kernel 2.6.0 (on Debian Sarge), and while everything
> seems to work just fine, to my surprise gdb now fails to debug
> executables that are linked against pthread:
>
> GNU gdb 5.3-debian
> [snip]
> This GDB was configured as "i386-linux"...
> (gdb) b main
> Breakpoint 1 at 0x80483a4: file foo.c, line 3.
> (gdb) r
> Starting program: /root/a.out
> Error while reading shared library symbols:
> Cannot find new threads: capability not available
> Cannot find user-level thread for LWP 714: capability not available
>
> With kernel 2.4.22 this problem did not occur. Do you have any idea what
> may have caused this problem, and how to solve it? If I can provide you
> with any information that could be helpfull, please let me know.
>
> Kind regards,
>
> Maarten
>
> gcc version 3.3.2 (Debian)
> GNU gdb 5.3-debian
> GNU libc 2.3.2
>
>
>