From owner-freebsd-hackers  Tue Aug  6  9:29:47 2002
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Date: Tue, 6 Aug 2002 18:31:24 +0200 (CEST)
From: Martin Blapp <mb@imp.ch>
To: John Polstra <jdp@polstra.com>
Cc: <hackers@FreeBSD.ORG>, <openoffice@FreeBSD.ORG>,
	Alexander Kabaev <ak03@gte.com>, <deischen@FreeBSD.ORG>
Subject: Re: Help needed. Deadlock in rtld makes openoffice build hang ag
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hi,

> The lock algorithms are taken from the paper referenced in the comment
> at the top of lockdflt.c, and I believe they are correct.  Whatever is
> happening must be caused by changes in libc_r that cause the profiling
> timer to stop advancing, or cause SIGPROF to be blocked.  There were
> some major changes made to libc_r on 13 Oct 2000 that could be
> connected with this.

Maybe Daniel knows more ?

>
> Just as an experiment, please try this change to lockdflt_init() in
> rtld-elf/i386/lockdflt.c:
>
>      sigfillset(&fullsigmask);
> +    sigdelset(&fullsigmask, SIGPROF);
>      sigdelset(&fullsigmask, SIGILL);

I'll add that.

>
> PS - Are you working with -stable or with -current?

STABLE. But as I remember it happened also on CURRENT when
I built OO.org there.

Martin


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