Mailing List Archive

[Bug 1383] Tons of "rcvd too much data win" messages since upgrading to 4. 7p1
https://bugzilla.mindrot.org/show_bug.cgi?id=1383


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

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




--- Comment #1 from Darren Tucker <dtucker@zip.com.au> 2007-12-29 09:43:56 ---
(In reply to comment #0)
> I often use SSH to connect to a system for which I have "DynamicForward
> 1080" configured, and then use this as a dynamic SOCKS proxy.
>
> Since upgrading to 4.7p1,

Was that upgrading the server, client or both?

> I get tons and tons of "rcvd too much data X
> win Y" messages on the console as I browse around the Internet, and
> pages randomly stop loading, sometimes immediately, sometimes after
> part of it has been loaded. X is some number that is not always the
> same, same for Y.

Could you please attach (using "create attachment") the entire output
from "ssh -vvv yourserver" showing the errors (and the server side
"/path/to/sshd -ddd" if possible)?

> Sometimes I get a few of these messages on one page. Sometimes the
> ssh window just scrolls and scrolls with them.
>
> Reverting to 4.6p1 fixed this issue.
>
> I'm running Gentoo using their "stable" ebuilds, so it's compiled for
> my system, and not using any dubious package or anything.

We have just found a and fixed a somewhat similar problem (bug #1360).
You may want to try the patch on that bug (attachment #1426)

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[Bug 1383] Tons of "rcvd too much data win" messages since upgrading to 4. 7p1 [ In reply to ]
https://bugzilla.mindrot.org/show_bug.cgi?id=1383





--- Comment #2 from Jeff Mitchell <kde-dev@emailgoeshere.com> 2008-01-11 03:22:49 ---
This was upgrading the client.

I'll test out with the patch and get the requested information back to
you soon.

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[Bug 1383] Tons of "rcvd too much data win" messages since upgrading to 4. 7p1 [ In reply to ]
https://bugzilla.mindrot.org/show_bug.cgi?id=1383





--- Comment #3 from Darren Tucker <dtucker@zip.com.au> 2008-01-11 11:42:17 ---
I was not able to replicate this problem. Is the server OpenSSH (and
if so, which version?) or something else?

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[Bug 1383] Tons of "rcvd too much data win" messages since upgrading to 4. 7p1 [ In reply to ]
https://bugzilla.mindrot.org/show_bug.cgi?id=1383





--- Comment #4 from Jeff Mitchell <kde-dev@emailgoeshere.com> 2008-01-11 12:40:11 ---
The server is OpenSSH, which is why it's on this Bugzilla. The version
is 4.71p1 as stated in the subject and the the Version field on this
bug report.

I switched back to 4.7p1 today and I'm trying to replicate this. It
may take a few days...I didn't see it happening *all* the time. Or
maybe I'll never see it again...we'll have to see.

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[Bug 1383] Tons of "rcvd too much data win" messages since upgrading to 4. 7p1 [ In reply to ]
https://bugzilla.mindrot.org/show_bug.cgi?id=1383





--- Comment #5 from Jeff Mitchell <kde-dev@emailgoeshere.com> 2008-01-12 03:31:15 ---
I unfortunately can't get the server side logs, but here's a log with
-vvv where the connection simply died on me with these messages:

debug1: channel 29: new [dynamic-tcpip]
debug2: channel 29: pre_dynamic: have 0
debug2: channel 29: pre_dynamic: have 3
debug2: channel 29: decode socks5
debug2: channel 29: socks5 auth done
debug2: channel 29: pre_dynamic: need more
debug2: channel 29: pre_dynamic: have 0
debug2: channel 29: pre_dynamic: have 5
debug2: channel 29: decode socks5
debug2: channel 29: socks5 post auth
debug2: channel 29: pre_dynamic: need more
debug2: channel 29: pre_dynamic: have 23
debug2: channel 29: decode socks5
debug2: channel 29: socks5 post auth
debug2: channel 29: dynamic request: socks5 host support.fnfr.com port
80 command 1
debug2: channel 29: open confirm rwindow 131072 rmax 32768
debug2: channel 29: window -98786 sent adjust 98797
channel 29: rcvd too much data 2760, win 11
channel 29: rcvd too much data 5520, win 11
channel 29: rcvd too much data 2760, win 11
channel 29: rcvd too much data 4140, win 11
channel 29: rcvd too much data 2760, win 11
channel 29: rcvd too much data 897, win 11
debug2: channel 27: window -99034 sent adjust 99033
debug2: channel 27: window -99909 sent adjust 99908
debug2: channel 27: window -98392 sent adjust 98391
debug2: channel 27: rcvd adjust 65697
debug2: channel 27: window -99555 sent adjust 99554
debug2: channel 27: window -99893 sent adjust 99892
debug2: channel 27: window -98652 sent adjust 98651
debug2: channel 27: window -100137 sent adjust 100136
debug2: channel 27: window -100635 sent adjust 100634
debug2: channel 27: window -100965 sent adjust 100964
debug2: channel 27: window -99478 sent adjust 99477
debug2: channel 29: rcvd eof
debug2: channel 29: output open -> drain
debug2: channel 29: obuf empty
debug2: channel 29: close_write
debug2: channel 29: output drain -> closed
debug2: channel 29: read<=0 rfd 36 len 0
debug2: channel 29: read failed
debug2: channel 29: close_read
debug2: channel 29: input open -> drain
debug2: channel 29: ibuf empty
debug2: channel 29: send eof
debug2: channel 29: input drain -> closed
debug2: channel 29: send close
debug3: channel 29: will not send data after close
debug3: channel 29: will not send data after close
debug2: channel 29: rcvd close
debug3: channel 29: will not send data after close
debug2: channel 29: is dead
debug2: channel 29: garbage collecting

I'll attempt the patch that you linked to and see if that helps.

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[Bug 1383] Tons of "rcvd too much data win" messages since upgrading to 4. 7p1 [ In reply to ]
https://bugzilla.mindrot.org/show_bug.cgi?id=1383





--- Comment #6 from Jeff Mitchell <kde-dev@emailgoeshere.com> 2008-01-12 04:16:44 ---
The patch did not fix the issue. Still getting dropped connections.
Went back to OpenSSH 4.6p1 and everything worked again.

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[Bug 1383] Tons of "rcvd too much data win" messages since upgrading to 4. 7p1 [ In reply to ]
https://bugzilla.mindrot.org/show_bug.cgi?id=1383





--- Comment #7 from Darren Tucker <dtucker@zip.com.au> 2008-01-22 15:34:00 ---
(In reply to comment #4)
> The server is OpenSSH, which is why it's on this Bugzilla. The version
> is 4.71p1 as stated in the subject and the the Version field on this
> bug report.

Just so I have this clear:

* the server is an unmodified OpenSSH 4.7p1 and always has been.
* the client *was* an unmodified 4.6p1 and had no problems.
* the client was upgraded to an unmodified 4.7p1 and the problem
occurred.
* the client was downgraded to 4.6p1 and the problem stopped.

Please attach (use "Add an attachment") the *ENTIRE* debug output from
the client.

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[Bug 1383] Tons of "rcvd too much data win" messages since upgrading to 4. 7p1 [ In reply to ]
https://bugzilla.mindrot.org/show_bug.cgi?id=1383





--- Comment #8 from Jeff Mitchell <kde-dev@emailgoeshere.com> 2008-01-22 23:56:46 ---
* the server is an unmodified OpenSSH 4.7p1 and always has been.

I made a typo in comment #4. I meant the client is OpenSSH 4.7p1.
I've just checked what the server is; it's a SunOS 5.10 box running
OpenSSH. Here's the string I get when telnetting to port 22:

SSH-1.99-OpenSSH_4.2

* the client *was* an unmodified 4.6p1 and had no problems.

Yes, with Gentoo patches.

* the client was upgraded to an unmodified 4.7p1 and the problem
occurred.

Yes, with Gentoo patches. I can disable these patches if you want me
to test that.

* the client was downgraded to 4.6p1 and the problem stopped.

Yes.

I can attach the entire debug output with things going haywire if you
want (I assume you want -vvv). Do you want it with the 4.7 I've been
using (i.e. with Gentoo patches) or a totally unmodified tarball?

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[Bug 1383] Tons of "rcvd too much data win" messages since upgrading to 4. 7p1 [ In reply to ]
https://bugzilla.mindrot.org/show_bug.cgi?id=1383





--- Comment #9 from Darren Tucker <dtucker@zip.com.au> 2008-01-30 13:35:01 ---
(In reply to comment #8)
> I can attach the entire debug output with things going haywire if you
> want (I assume you want -vvv).

Yes, please attach the whole thing via "Add an attachment"/

> Do you want it with the 4.7 I've been
> using (i.e. with Gentoo patches) or a totally unmodified tarball?

Unmodified tarball please.

Basically I need to either get enough information to figure out what's
going on from the debug output, or to be able to replicate your problem
here.

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