Re: bin/38396: sshd does not work

[christos%zoulas.com@localhost (Christos Zoulas)]

The following reply was made to PR bin/38396; it has been noted by GNATS.

From: christos%zoulas.com@localhost (Christos Zoulas)
To: gnats-bugs%NetBSD.org@localhost, gnats-admin%netbsd.org@localhost, 
netbsd-bugs%netbsd.org@localhost, 
        martin%duskware.de@localhost
Cc: 
Subject: Re: bin/38396: sshd does not work
Date: Sun, 13 Apr 2008 11:20:41 -0400

 On Apr 13,  1:55pm, ad%netbsd.org@localhost (Andrew Doran) wrote:
 -- Subject: Re: bin/38396: sshd does not work
 
 |  http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/monitor_fdpass.c
 |  http://www.openbsd.org/cgi-bin/cvsweb/src/sys/kern/uipc_usrreq.c
 |  
 |  >                 char buf[CMSG_SPACE(sizeof(int))];
 |  
 |  Hmm, CMSG_SPACE() isn't constant on NetBSD as far as I can tell. Naively we
 |  could do this, but I haven't read enough of the surrounding code yet to know
 |  if its safe.
 |  
 |     1021     /* Sanity check the control message header. */
 |     1022     if (cm->cmsg_type != SCM_RIGHTS || cm->cmsg_level != SOL_SOCKET 
||
 |     1023         cm->cmsg_len > control->m_len)
 |     1024             return (EINVAL);
 |  
 |  Andrew
 
 Something is seriously wrong with amd64 recent kernels. I can get them to
 crash with any network activity including ftp. I've also have not upgraded
 ssh, just the kernel (I am now running current/generic) and it is still
 easy to kill it by transferring a large file either via ftp or scp. Looks
 like something is wrong and I am running out of kstack, or kstack gets
 corrupted. Most of the time, the machine just freezes.
 
 christos