[Bug 2355] general protection / segfaults when PermitOpen=none

[bugzilla-daemon at mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=2355

Darren Tucker <dtucker at zip.com.au> changed:

           What    |Removed                     |Added
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                 CC|                            |dtucker at zip.com.au

--- Comment #7 from Darren Tucker <dtucker at zip.com.au> ---
(In reply to Christoph Anton Mitterer from comment #6)
> (In reply to Damien Miller from comment #2)
> > Could you try running a sshd in debugging mode on a different port
> > (i.e. "sshd -dddp 2222") and catching it in the act of crashing?
> > Seeing where it fails would be a great help.
> Sure, see attached files: sshd and ssh output, from the later you
> see which tries failed (with which error) and which worked.
> 
> Interestingly, the sshd quite *every time* after the end of the
> connection... is this because of -D?

-D and -d mean different things, but yes -d means "run in debug mode
once then exit".  If you want to leave it up you can use this instead
of -d:

/path/to/sshd -De -o LogLevel=debug3

> (In reply to Damien Miller from comment #3)
> > BTW, I can't replicate this with HEAD
> Mhh and have you tried with an older tag as well (i.e. 6.7p1?) and
> could replicate it there?

Note that you are running a vendor-modified version of OpenSSH:
Local version string SSH-2.0-OpenSSH_6.7p1 Debian-3

It's not all that easy for us to know exactly what each vendor has
changed.  Even things like which compiler flags they use can make a
difference.  Have you reported this to Debian?  They're in a much
better position to reproduce a problem.

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