Re: GDB locks up -- Cannot find new threads: generic error

David Lecomber
2005-05-03T14:25:24Z

> >> The system is:
> >> kernel-2.4.21-27.EL
> >> glibc-2.3.2-95.30
> >
> > At a guess, your kernel is buggered. You really should never see that
> > warning. The unexpected signal is SIGCHLD; your kernel has accepted
> > the SETOPTIONS but obviously failed to stop when the test thread
> > vforked.
>
> I think that can happen when the 32 bit ptrace emulation is incomplete,
> especially if PTRACE_GETEVENTMSG is not properly emulated. That should be
> fixed in recent (< 9 months) kernels.

Hello Andreas,

I can reproduce this on a SuSE Opteron machine - running 2.6.8-24.13 -
and 2.6.8 came out 13th August (?). How - other than brokenness - can I
test if this PTRACE_GETEVENTMSG is the problem?

Regards
David