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Date:      Fri, 27 May 2011 15:22:24 +0400
From:      Gleb Smirnoff <glebius@FreeBSD.org>
To:        Joerg Wunsch <joerg_wunsch@uriah.heep.sax.de>
Cc:        freebsd-bugs@FreeBSD.org, FreeBSD-gnats-submit@FreeBSD.org
Subject:   Re: kern/157287: re0: INVARIANTS panic (Memory modified after free)
Message-ID:  <20110527112224.GK74366@FreeBSD.org>
In-Reply-To: <20110526155424.GA90858@uriah.heep.sax.de>
References:  <20110524060026.E8285AA@uriah.heep.sax.de> <201105240610.p4O6A94E003499@freefall.freebsd.org> <20110526155424.GA90858@uriah.heep.sax.de>

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On Thu, May 26, 2011 at 05:54:24PM +0200, Joerg Wunsch wrote:
J> As it turns out this might be related to something else that has been
J> using that piece of memory before re(4) is activated, here are the
J> boot messages for reference.

You can try to add 'options DEBUG_MEMGUARD' to your kernel config,
and add the 'vm.memguard.desc=devbuf' to your /boot/loader.conf.

This may help to find place where memory is tampered after free.

-- 
Totus tuus, Glebius.



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