Re: I got problems with sshd - openssh_4.0

From: Anders Wallander (anders_nosp_at_m_blixtsken.se)
Date: 03/18/05 

Date: Fri, 18 Mar 2005 17:43:28 GMT

On 17 Mar 2005 19:46:23 GMT
Darren Tucker <dtucker@gate.dodgy.net.au> wrote:

> On 2005-03-17, Anders Wallander <anders_nosp@m_blixtsken.se> wrote:
> > On 17 Mar 2005 08:37:28 GMT
> > Darren Tucker <dtucker@gate.dodgy.net.au> wrote:
> >> Try creating a /lib dir within sshd's chroot dir (ie if it's in the
> >> default location, do "mkdir /var/empty/lib").
> >
> > Made what you suggested and now it works. Thx!
> >
> > I this a common problem? didn't find any info about the problem.
>
> It's a known problem but it's not in sshd, it's a bug in Fedora's
> glibc (a bad interaction with its memory protection features).
> Basically, chroot + dns lookup = segfault, unless you have that /lib
> dir in the chroot.
>
> The details are in this thread:
> http://marc.theaimsgroup.com/?l=openssh-unix-dev&m=111045930530623
> and the Fedora bug is:
> https://bugzilla.redhat.com/beta/show_bug.cgi?id=144303

Great thread. Rather silly problem, but now when it works again it gives
a good laugh. Think I'll try the other "UseDNS no" also to try around
some. Lets see if I remember my gdb also =)

Thanks once again.

/Anders