Bug 1359

Summary:	keyboard repeats when somebody logins as root through ssh
Product:	Portable OpenSSH	Reporter:	Pacho Ramos <pacho>
Component:	ssh	Assignee:	Assigned to nobody <unassigned-bugs>
Status:	CLOSED INVALID
Severity:	normal	CC:	dtucker
Priority:	P2
Version:	4.7p1
Hardware:	All
OS:	Linux

Description Pacho Ramos 2007-09-11 06:51:48 AEST

If somebody connects to my system using ssh and logins as root (and sometimes also as user) keyboard will repeat until user switch to console and comes back to X.

This occurs on all my gentoo systems with openssh-4.5_p1, 4.6_p1 and 4.7_p1

Thanks a lot

Comment 1 Darren Tucker 2007-09-11 10:06:40 AEST

What do you mean by "repeats"?  The same key appears multiple times when you press it once, or the keystrokes are echoed even when they should not be (eg while entering a password)?

Do you have PAM enabled and if so, what modules do you have in the sshd stack?  If you do have it enabled, do you see the same behaviour with "UsePAM no" in sshd_config.

Can you reproduce the problem with a vanilla OpenSSH 4.7p1 from openssh.com without any Gentoo modifications?  (I have no idea what, if anything, Gentoo changes.)

Comment 2 Pacho Ramos 2007-09-11 22:54:50 AEST

(In reply to comment #1)
> What do you mean by "repeats"?  The same key appears multiple times
> when you press it once, or the keystrokes are echoed even when they
> should not be (eg while entering a password)?
> 

When anybody logins as root, keyboard starts to fail in X, sometimes, if I press a key, it is repeated:
llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllsssssssssssssssssssssssssssssss
...

until I switch to a console and come back to X. But, for example now, when I was trying with openssh without pam, keyboard simply cannot write anything but it works, because I can switch to a console and come back to X also (Ctrl+Alt+F2 -> Ctrl+Alt+F7).



> Do you have PAM enabled and if so, what modules do you have in the sshd
> stack?  If you do have it enabled, do you see the same behaviour with
> "UsePAM no" in sshd_config.
> 

I get the same problem with and without pam enabled

> Can you reproduce the problem with a vanilla OpenSSH 4.7p1 from
> openssh.com without any Gentoo modifications?  (I have no idea what, if
> anything, Gentoo changes.)
> 

My gentoo build only has the following modified:

1. After unpacking sources it runs:
        sed -i \
                -e '/_PATH_XAUTH/s:/usr/X11R6/bin/xauth:/usr/bin/xauth:' \
                pathnames.h || die

        sed -i "s:-lcrypto:$(pkg-config --libs openssl):" configure{,.ac} || die

2. Configure is run with the following options:

$ ./configure --prefix=/usr --host=x86_64-pc-linux-gnu --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var/lib --with-ldflags= --disable-strip --sysconfdir=/etc/ssh --libexecdir=/usr/lib64/misc --datadir=/usr/share/openssh --disable-suid-ssh --with-privsep-path=/var/empty --with-privsep-user=sshd --with-md5-passwords --without-ldap --without-libedit --without-kerberos5 --with-tcp-wrappers --without-selinux --without-skey --without-opensc --with-pam --libdir=/usr/lib64 --build=x86_64-pc-linux-gnu

3. After installing:

$ chmod 600 /etc/ssh/sshd_config

If you want, I can upload some config files...

Thanks a lot :-)

Comment 3 Pacho Ramos 2007-09-11 23:02:34 AEST

I attach a small video showing the problem, keyboard stops when I go to console 1 and come back to X:

http://files.myopera.com/pacho/files/out.ogg

Comment 4 Pacho Ramos 2007-09-22 19:58:13 AEST

Sorry, this is caused by this:
http://bugs.gentoo.org/show_bug.cgi?id=192442#c11

Comment 5 Damien Miller 2008-04-04 10:00:43 AEDT

Close resolved bugs after release.