Date: Mon, 22 Mar 1999 20:04:07 +0100 (CET) From: Frederic LOYER <loyer@ensta.fr> To: mwhite@donet.com (Matt White) Cc: freebsd-stable@FreeBSD.ORG Subject: Re: Strange Error Message Message-ID: <199903221904.UAA20478@quickstep.ensta.fr> In-Reply-To: <000001be7402$9766b5c0$0402030a@yiff.bunnynet.org> from Matt White at "Mar 21, 1999 8:23:28 pm"
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> Hello... > > Today while copying a large number of files I started getting this error > message: > > inetd in realloc(): warning: junk pointer, too low to make sense. > inetd in free(): warning: junk pointer, too low to make sense. > > This is a -STABLE system, last cvsupped and built on the 20th of this month. > > Any idea what this means? It prevented me from logging in, whenever I'd try > to start up a telnet session it would toss those two lines to me and close > the session. (I was still able to ssh in, which is not started via inetd.) > > Thanks, > Matt I've found the same problem. This means there is a bug in "inetd" or one of the called libraries. Trying to work with a debugger is difficult since inetd crash after the fork(): you can't login but the "main" inetd process is still alive to answer the following connection... and crash again. It seems to happen in malloc() called from login_getclass()... but this doesn't tell us where the memory is screwed: there must be something wrong before the fork() since this error comes on *every* connection after the first error. It could be triggered by the folowing lines: comsat dgram udp wait tty:tty /usr/libexec/comsat comsat ntalk dgram udp wait tty:tty /usr/libexec/ntalkd ntalkd tty:tty is quite recent on -STABLE, and I don't remember seeing this error before updating /etc/inetd.conf. Anyway this error is too rare to be debugged easily (I can't reproduce it). -- Frederic Loyer <loyer@ensta.fr> To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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