Defect: OpenSSH hangs on logout

[Aaron Bush]

Greg Wooledge wrote:
> 
> On Thu, Jun 07, 2001 at 11:42:27AM -0700, Kevin Steves wrote:
> 
> >  stevesk  1611  1609  9 11:33:29 ?         0:00 <defunct>
> >     root  1609   912  0 11:33:28 ?         0:00 sshd: stevesk at 1
> >
> > the server was blocked in select() when the SIGCHLD was received, and it
> > was restarted, where it is blocked waiting for input.  if you enter one
> > character it will return and process the sigchld hander flag.
> 
> Ah!  Yes, I've seen that one too -- but I didn't consider it a serious
> bug because all I have to do is press Enter to get my prompt back.
> 
> Unfortunately, I don't know of any way to reproduce that one consistently.
> (And naturally, when I want to test it, I can't make it show up....)

The real danger that i have come across is when doing a scp a defunct
process will show up after the copy is complete.
Basically you end up with a scp that never returns which is very bad.

-ab