From owner-freebsd-current@FreeBSD.ORG  Mon Aug 16 17:16:39 2004
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Date: Mon, 16 Aug 2004 10:16:38 -0700 (PDT)
From: Doug White <dwhite@gumbysoft.com>
To: Rostislav Krasny <rosti_bsd@yahoo.com>
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cc: freebsd-current@freebsd.org
Subject: Re: panic: ffs_blkfree: freeing free frag
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On Mon, 16 Aug 2004, Rostislav Krasny wrote:

> Hello all.
>
> I just powered the box on, logged in as a root, cvsuped to the today's
> -CURRENT and then I ran:
>
> cd /usr/obj
> chflags -R noschg *
> rm -rf *
> cd /usr/src
> rehash
> w
>
> Then I wanted to run 'make buildworld' but before I hit the [Enter] key
> the system is paniced:
>
> dev = ad0s1f, block = 850900, fs = /usr
> panic: ffs_blkfree: freeing free frag

Running massive deletes and/or file changes while background fsck is
running is known to cause wierd panics. You migth run a full foreground
fsck of that filesystem to clean up any leftovers, however.

-- 
Doug White                    |  FreeBSD: The Power to Serve
dwhite@gumbysoft.com          |  www.FreeBSD.org