similar to: OpenSSH problem report on Linux 2.2.14.

Hi, Thank you for the great OpenSSH package. I obtained 1.2.2 and tried it on linux 2.2.14. I had reported earlier that I saw "Transport endpoint is not connected" warning messages were observed on the linux 2.2.14 kernel with earlier release of openssh. The same happens when I used the port-forwarded HTTP connection. But this time, after accessing such http connections, I noticed

Markus, How's this patch? - a chan_wont_read()/chan_wont_write() API is added that is very much like chan_read_failed()/chan_write_failed(), but for the debug messages and chan_wont_*() don't ever call error() The 3.0.2p1 channel_pre_x11_open() uses chan_*_failed() but looks like it ought to use chan_wont_*() instead :) - forkoff() no longer fakes EOF for SSHv2 (still

The Linux implementation of TCP sockets has a bug which causes shutdown(sock, SHUT_RD) to fail spuriously (ENOTCONN) if the write side of the socket has already been shut down. If you are using SSH port forwarding to tunnel HTTP through a firewall, nchan.c will tickle this bug once for every HTTP exchange. You will therefore get lots of useless, annoying error messages: channel 2:

As you are now probably aware, the portability team for openssh still has not fixed the hang-on-exit bug in the 2.9.9p2 release. Attached is a patch for 2.9.9p2 that fixes the hang-on-exit bug for Linux systems. It also adds a useful exit delay feature that has also not yet been incorporated into the main sources. For more information, see the SNFS (secure NFS) web page:

The hang-on-exit bug still hasn't been fixed in OpenSSH-3.0p1... :-( Here again is the patch to fix this bug under Linux, updated for OpenSSH-3.0p1. This has been exhaustively tested for six months now. It also add an exit delay option that can be useful. The patch does not lead to data loss under Linux. Please see the Secure NFS page (SNFS) for further details:

When I encounter the problem with TCP port forwarding locking up, I'll see this on the client window (if I haven't invoked ssh with -q): chan_shutdown_read failed for #1/fd6: Transport endpoint is not connected chan_shutdown_read failed for #1/fd6: Transport endpoint is not connected This is with Blowfish encryption. I have to kill and restart the client when this happens. Phil

Hello, The error message in the subject line occurs with the new 2.3.0 openssh version and appeared in the previous snapshots on our Solaris systems. As far as I remember it was reported, but have not seen any more about this. I have looked into it a little bit. First, the file session.c (line 1849 onwards): debug("session_exit_message: release channel %d", s->chanid);

Hi, At the n2k10 OpenBSD network hackathon, I finally got some time to clean up and rewrite the ssh(1) client multiplexing code. The attached diffs (one for portable OpenSSH, one for OpenBSD) are the result, and they need some testing. The revised multiplexing code uses a better protocol between the master and slave processes and I even bothered to write it up :) It tracks the control sockets

I am running OpenSSH 2.9p1 on SunOS 5.7 w/4-24-2001 patch cluster. Like many other users I am seeing the hanging session on logout with background processes. This is a huge problem for me as I centrally manage 50+ machines with rdist across ssh. Instead of just complaining about the problem I thought I would put my CS degree to use and try to track down the problem myself. For starters,

The command "ssh ls -l /doesnotexist" gives various responses: Running from a 200 MHz PentiumPro with dsa key added to ssh-agent: Mistakes worst to fast machine: To a faster 600 MHz dual processor i686 600 MHz machine: ls: /doesnotexist: No such file or directory -- correct nothing at all -- wrong ls: select: Bad file descriptor -- wrong

Attached is the patch I've been using to fix the error message seen in the subject line. It seems (!) to have caused no problems with the previous openssh snapshot version openssh-SNAP-20001016, 2.3.0p1 and the latest snapshot (openssh-SNAP-20001114). The patch adds 3 lines to nchan.c in a switch stmt (line 100). It simply caters for the cases where the input channel state is

For some time I have routinely websurfed across a forwarded TCP connection using SSH. The other end of the TCP tunnel connects to a Squid proxy cache on the same machine. This usually works. But I see lots of error messages on each end of the form Jun 13 13:22:02 tunnel sshd[32378]: error: channel 0: chan_shutdown_read: shutdown() failed for fd5 [i1 o128]: Transport endpoint is not connected

Here is a simpler patch (based on Markus Friedl's suggestion posted to this list) to OpenSSH-3.0.2p1 to fix the hang-on-exit bug (Protocol 2 only). To date, no data loss has been reported with this patch: it does not break ssh or scp. This patch should make OpenSSH work on all operating systems exactly as it does under FreeBSD. This patch and others are maintained on the

In the changelog, there is an entry: 20001129 - (djm) Back out all the serverloop.c hacks. sshd will now hang again if there are background children with open fds. Does this mean that this is regarded as expected (and correct) behavior, that should not change in the future, or does it mean that this behavior is a known problem that someone will eventually fix? --Adam -- Adam McKenna

Log snippet: channel 10: istate 4 != open channel 10: ostate 64 != open channel 11: istate 4 != open channel 11: ostate 64 != open channel 12: istate 4 != open channel 12: ostate 64 != open channel 13: istate 4 != open channel 13: ostate 64 != open channel 14: istate 4 != open channel 14: ostate 64 != open channel 15: istate 4 != open channel 15: ostate 64 != open % ssh -V SSH Version

http://bugzilla.mindrot.org/show_bug.cgi?id=184 Summary: 3.1p1 openssh fails to build a working sshd on Trusted HP-UX 10.26 Product: Portable OpenSSH Version: -current Platform: HPPA OS/Version: HP-UX Status: NEW Severity: major Priority: P2 Component: sshd AssignedTo:

The 4.6p1 sshd is logging this error during remote commands or file transfers: error: channel 0: chan_read_failed for istate 3 Platform is Solaris 8, 4.6p1 + OpenSSL 0.9.8d. The commands and transfers work correctly, so the error message appears to be spurious. The error message does not appear when processing logins. Otherwise 4.6p1 is running without any apparent problems. This error

I'm still seeing problems when I use TCP connection forwarding across SSH to surf the web. I see lots of error messages of the form channel 1: chan_shutdown_read: shutdown() failed for fd7 [i1 o128]: Transport endpoint is not connected And I see occasional connection lockups. Both ends are running openssh-2.1.1p1. Phil

http://bugzilla.mindrot.org/show_bug.cgi?id=773 Summary: OpenSSH hangs or silently exits on write failure on stdout/stderr Product: Portable OpenSSH Version: -current Platform: All OS/Version: All Status: NEW Severity: normal Priority: P2 Component: ssh AssignedTo: openssh-bugs

Ok... This could be cockpit error, but I just don't see it. I've installed OpenSSH 2.1.0 and I can't get X11 forwarding to work. I don't recall having this problem under 1.2.3, but I don't use X11 forwarding often enough to really say that I actually saw it work either. Both sides are running OpenSSH-2.1.0-1 installed from rpm. The client side is running RedHat Linux 6.1