Re: pthreads & fork & execve

[Jakub Jelinek <jakub@redhat.com>]

On Mon, Apr 02, 2001 at 09:54:25AM -0300, Gustavo Niemeyer wrote:
> Hi Richard! Hi Dennis!
> 
> > I tracked this down to a corrupt jumptable somewhere in the pthreads
> > part of the libc (didnt have the source handy at that time, though). So
> > I think this is a libc bug (version does not matter) - I even did a
> > followup to a similar bug in the libc gnats database (I think I should
> > have opened a new one, though...). But I failed to construct a "simple"
> > testcase showing the bug (We use rather large amount of threads and
> > in one or two doing popen() calls - or handcrafted fork() && execv(),
> > the SIGSEGV is during fork()).
> 
> We're going trough two similar problems here. One is KDE, and the other
> is Linuxconf. Linuxconf is core dumping on a module when it is linked
> with pthread and dlopen()'ed with RTLD_GLOBAL. We must reduce one of
> them to a testcase.

By any chance, are you dlopening a DSO linked against -lpthread from
program not linked against -lpthread?

	Jakub