Bug 24293 – ssh: data goes missing

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Bug 24293 - ssh: data goes missing

Summary:	ssh: data goes missing

Status:	CLOSED CURRENTRELEASE

Aliases:	None

Product:	Red Hat Linux
Classification:	Retired
Component:	openssh (Show other bugs)
Sub Component:
Version:	7.1
Hardware:	i386 Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Tomas Mraz
QA Contact:	Brian Brock
Docs Contact:

URL:
Whiteboard:	Florence Gold
Keywords:

Duplicates:	24691 32808 (view as bug list)
Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2001-01-18 11:46 EST by Tim Waugh
Modified:	2007-04-18 12:30 EDT (History)
CC List:	1 user (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2005-02-03 04:01:54 EST
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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Groups: None (edit)

Description Tim Waugh 2001-01-18 11:46:39 EST

[root@turmoil /root]# dd if=/dev/zero bs=1k count=100 | wc
100+0 records in
100+0 records out
      0       0  102400
[root@turmoil /root]# ssh localhost dd if=/dev/zero bs=1k count=100 | wc
Password:
      0       0   65536

Um.. (this was from a tip-off on linux-kernel)

Comment 1 Tim Waugh 2001-01-18 11:47:27 EST

Oh yeah, this is with:

openssh-2.3.0p1-10
openssh-server-2.3.0p1-10
openssh-clients-2.3.0p1-10

Comment 2 Glen Foster 2001-01-18 16:24:50 EST

This defect is considered MUST-FIX for Florence Gold release

Comment 3 Pekka Savola 2001-01-20 03:03:33 EST

This is caused by the same thing as #21607.

This can be solved by reverting a fix or upgrading to latest snapshots, but 
the other problem with hanging connections (#19837) (sleep10& exit; service httpd restart, etc.)
will then come up.

It's one or the other, unless someone figures a way to fix this properly :-(.  There's info about these
issues in the reports I think, as well as current OpenSSH CVS TODO list.

Comment 4 Nalin Dahyabhai 2001-01-23 13:58:34 EST

*** Bug 24691 has been marked as a duplicate of this bug. ***

Comment 5 Pekka Savola 2001-01-23 14:07:50 EST

Note: there's a workaround for bash by Damien Miller for #19837:

shopt -s huponexit

Comment 6 Brian Brock 2001-01-31 19:22:37 EST

In addition to the above, I'm getting the following output with
openssh-2.3.0p1-14 (logged in as user test across the network):

[test@localhost test]$ ssh localhost dd if=/dev/zero bs=1k count=100 | wc
Password: 
select: Bad file descriptor
      0       0       0

The complaint about select isn't listed above

Comment 7 Pekka Savola 2001-02-02 18:53:06 EST

Brock, do you have  a funky .bashrc or .bash_profile which prints out stuff when you log in?

Or anything that'd generate output in stderr?

Comment 8 Nalin Dahyabhai 2001-02-20 17:58:58 EST

2.5.1p1 should show up in Raw Hide soon.

Comment 9 Brian Brock 2001-02-21 12:51:27 EST

No, the user test doesn't have anything unusual in .bashrc, .bash_profile, or
any similar startup files.  In fact, they're unmodified from a stock install, so
they should be identical to the copies in /etc/skel (the user test was created
after system installation of the beta.

Double-checking the .bashrc and other files (by sourcing them as the logged-in
user) didn't reveal any output to stderr.  

I'm going to begin re-testing with the latest tree (qa0221.0) today, which
includes the new openssh-2.5.1p1-1.

Comment 10 Nalin Dahyabhai 2001-02-22 17:17:34 EST

I highly suspect login scriptlet wackiness is to blame here.  The
closing-too-soon problem in 2.3.0p1 is correctly reverted in 2.5.1p1, but we get
the hang-on-exit (which affects rsh, too) when we do that.

Comment 11 Nalin Dahyabhai 2001-02-28 17:35:34 EST

I'm beginning to suspect that this is endemic to the rsh and friends work,
because the hang appears both on an OpenBSD server running OpenSSH 2.5.1, and on
a Linux box using regular unencrypted rsh.

Comment 12 Nalin Dahyabhai 2001-04-02 21:51:44 EDT

*** Bug 32808 has been marked as a duplicate of this bug. ***

Comment 13 Tomas Mraz 2005-02-03 04:01:54 EST

This is fixed as the patch that caused this regression was removed
long ago.

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