VCs and ^D fun at login:

Alex Buell (alex.buell@tahallah.demon.co.uk)
Tue, 24 Nov 1998 13:02:59 -0500 (EST)

Following a post on l-k about ^D fun at login:. I just tried this now, all
consoles are now DEAD apart from 2 consoles which are currently logged in
by myself, in order to write this email. All of these consoles have a
message 'INIT: Id "c3[456]" respawning too fast: disabled for 5 minutes".

I just noticed all the agetty processes on these particular consoles are
gone - a quick ps shows this.

PID TTY STAT TIME COMMAND
1 ? S 0:03 init
2 ? SW 0:00 (kflushd)
3 ? SWN 0:00 (kswapd)
9 ? S 0:00 /sbin/update
49 ? S 0:00 /usr/sbin/syslogd
50 ? S 0:00 /usr/sbin/klogd
52 ? S 0:00 /usr/sbin/inetd
54 ? S 0:00 /usr/sbin/crond -l10
63 ? S 0:00 gpm -t ps2
65 2 S 0:00 -csh
289 2 R 0:00 ps ax
64 1 S 0:00 -csh
286 1 S 0:01 pine

Whoops, look, no agetties. :o) Problem? Hmm, this is interesting. I wonder
if I can dial my Linux-based ISP up and press ^D just to kill off that
particular session and deny access. :/

Huh. I spaketh too soon. They're BACK!! So much for that DoS idea. :o)

PID TTY STAT TIME COMMAND
1 ? S 0:03 init
2 ? SW 0:00 (kflushd)
3 ? SWN 0:00 (kswapd)
9 ? S 0:00 /sbin/update
49 ? S 0:00 /usr/sbin/syslogd
50 ? S 0:00 /usr/sbin/klogd
52 ? S 0:00 /usr/sbin/inetd
54 ? S 0:00 /usr/sbin/crond -l10
63 ? S 0:00 gpm -t ps2
65 2 S 0:00 -csh
290 3 S 0:00 /sbin/agetty 38400 tty3 linux
291 4 S 0:00 /sbin/agetty 38400 tty4 linux
292 6 S 0:00 /sbin/agetty 38400 tty6 linux
293 5 S 0:00 /sbin/agetty 38400 tty5 linux
295 2 R 0:00 ps ax
64 1 S 0:00 -csh
286 1 S 0:01 pine

Anyway, upshot is, couldn't find any sight or sound or sign of a panic
anywhere as that guy originally mentioned with his i486. Maybe I'll
resurrect my i486 and seek to reproduce it. (Don't forget to go watch
StarTrek: Insurrection BTW. Supposed to rock!)

Cheers,
Alex.

---
 /\_/\  Legalise cannabis now! 
( o.o ) Grow some cannabis today! 
 > ^ <  Peace, Love, Unity and Respect to all.


Check out http://www.tahallah.demon.co.uk
Linux lo-pc3035a 2.1.129 #9 Thu Nov 19 14:23:26 EST 1998
One Intel Pentium 166MHz processor, 66.36 total bogomips, 16M RAM
System library 5.4.44




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