openssh bugs - Sep 2008 - [Bug 1522] New: MaxSessions=0 causes client to hang

https://bugzilla.mindrot.org/show_bug.cgi?id=1522

           Summary: MaxSessions=0 causes client to hang
           Product: Portable OpenSSH
           Version: 5.1p1
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: sshd
        AssignedTo: unassigned-bugs at mindrot.org
        ReportedBy: imorgan at nas.nasa.gov


When MaxSessions=0 is set in the sshd_config, client connections hang.
Port forwardings requested on the ssh command-line still work, assuming
the server allows them, but the client is unresponsive to any keyborad
input. Neither ~. nor ^C will close the session.

Based on comments from Damien, the solution may be to to replace a call
to channel_free() with chan_mark_dead() in channels.c.

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https://bugzilla.mindrot.org/show_bug.cgi?id=1522





--- Comment #1 from Damien Miller <djm at mindrot.org>  2008-12-08
10:05:34 ---
Created an attachment (id=1586)
 --> (http://bugzilla.mindrot.org/attachment.cgi?id=1586)
call cleanup handlers on channel open failures

This patch changes the way that we clean up on receipt of an open
failure message so that we run the callbacks that are needed for ssh to
notice that its session channel has gone away.

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Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |djm at mindrot.org
             Blocks|                            |1481




--- Comment #2 from Damien Miller <djm at mindrot.org>  2008-12-08
10:05:53 ---
put this on the list for 5.2

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Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED




--- Comment #3 from Damien Miller <djm at mindrot.org>  2009-01-02
08:21:16 ---
patch applied - this will be in openssh-5.2. Thanks!

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Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED




--- Comment #4 from Damien Miller <djm at mindrot.org>  2009-02-23
13:36:24 ---
Close bugs fixed/reviewed for openssh-5.2 release

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