From owner-cvs-all  Sat Sep 14 12: 7:29 2002
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Date: Sun, 15 Sep 2002 05:15:27 +1000 (EST)
From: Bruce Evans <bde@zeta.org.au>
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To: Martin Blapp <mb@imp.ch>
Cc: "Jacques A. Vidrine" <nectar@FreeBSD.org>, <netctar@FreeBSD.org>,
	<cvs-committers@FreeBSD.org>, <cvs-all@FreeBSD.org>
Subject: Re: cvs commit: src/lib/libc/net getaddrinfo.c gethostbydns.c
 getnetbydns.c name6.c res_query.c res_update.c
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On Sat, 14 Sep 2002, Martin Blapp wrote:

> > Hmm, I cannot reproduce it.  What's your environment?
>
> It's not you fault. Tim J. Robbins and I have reporduced it and he has
> tracked it down to libc_r.
>
> Stack growing is broken in libc_r. Everything that tries to expand the
> stack above 65536 is broken.
> ...
> See testcase:
>
> http://people.freebsd.org/~tjr/stack.c
>
> Important ! This is in STABLE too.

This seems to be just hitting the default limit:

%%%
Script started on Sun Sep 15 05:10:34 2002
ttyv1:root@gamplex:/tmp> ulimit -s
65536
ttyv1:root@gamplex:/tmp> ulimit -s 65537
ttyv1:root@gamplex:/tmp> ulimit -s
65536
ttyv1:root@gamplex:/tmp> grep MAXSSIZ /usr/include/machine/*.h
/usr/include/machine/vmparam.h:#ifndef	MAXSSIZ
/usr/include/machine/vmparam.h:#define	MAXSSIZ		(64UL*1024*1024)	/* max stack size */
ttyv1:root@gamplex:/tmp> exit

Script done on Sun Sep 15 05:10:52 2002
%%%

The limit can't be raised above 65536K without changing the (kernel)
compile-time default.

Bruce


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