Bug#115767: I see this too on x86-xen running etch

[Justin Pryzby <justinpryzby@users.sourceforge.net>]

On Sat, Apr 15, 2006 at 10:27:32PM +0000, Andy Smith wrote:
> > On Fri, Apr 14, 2006 at 03:58:09PM +0000, Andy Smith wrote:
> > > Okay, I'm now running:
> > > 
> > > $ sudo strace -ff -o /var/log/ssh-strace/ssh-strace.log /usr/sbin/sshd
> 
> Unfortunately now whenever I log in via an sshd that is running
> under strace, none of my setuid binaries work.
Um, yea, that would break .. its mentioned in the strace manpage BUGS section.

> For sudo this is a
> showstopper: all I get is "sudo: must be setuid root".  Since I
> still need to use this machine I've had to stop running sshd under
> strace. :(
What about strace without -f?  I just tested with strace -o /dev/null sh, and I
am still able to run sudo.  It isn't clear to me whether this will catch the
problem; it depends on the server crashing (you said it did, no?) and sshd not
forking before it tries to read urandom. 

> If anyone is interested in debugging this I can set you up a 64M
> etch xen domain that you have root access to and you can do what you
> like to it to try and get to the bottom of this.
I'm not sure I would know what to try ..

Thanks
Justin