(unknown charset) Re: Strange semi-hangs on 5.4

From: (unknown charset) Kris Kennaway <kris_at_obsecurity.org>
Date: Sun, 8 May 2005 17:21:46 -0700
On Sun, May 08, 2005 at 04:14:45PM -0700, Doug White wrote:
> On Sun, 8 May 2005, [ISO-8859-1] Eirik Øverby wrote:
> 
> > Hi all,
> >
> > With relatively recent 5.4, I'm seeing hangs that worry me. The box
> > (dual opteron) accepts keyboard input, but it won't actually DO
> > anything.. SSHing in gives me a TCP session but no actualy password
> > prompt. Trying to log in on (serial) console doesn't work, I just get
> > a newline after entering the username, no password prompt. On SSH
> > shells alredy open, I can't even get a new prompt line, all I get is
> > newlines.
> 
> I've seen this if you have console redirection set to "always" on certain
> BIOSes. Some apparently can stay alive after FreeBSD steals the serial
> port and jumps into protected mode. Most notice loader fiddling with the
> port registers and know to get out of the way.
> 
> Try turning it off or setting it to "Boot Loader" or turn off "CR
> Redirection after POST".
> 
> > telnet> send brk
> 
> Cyclades?
> 
> > KDB: enter: Line break on console
> > 3KtDhB:a s tpaicdk  1b1a0e00:0
> 
> Ah, interleaved output :-)
> 
> > aitd l e _ p r o c ( )   a t   i d l e _ p r o c + 0 x 1 1 3
> 
> The spaces here are what I'm guessing is the console redirection.

Or two simultaneous panics from different CPUs..I get this quite
frequently (but not the DDB prompt loop).

Kris



Received on Sun May 08 2005 - 22:21:47 UTC

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