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Date:      Mon, 04 Feb 2002 16:46:00 +0000
From:      Mark Murray <mark@grondar.za>
To:        John Polstra <jdp@polstra.com>
Cc:        current@FreeBSD.ORG
Subject:   Re: Panics in ffs_clusteracct with todays -current 
Message-ID:  <200202041646.g14Gk5E56541@greenpeace.grondar.org>
In-Reply-To: <XFMail.20020203205249.jdp@polstra.com> ; from John Polstra <jdp@polstra.com>  "Sun, 03 Feb 2002 20:52:49 PST."
References:  <XFMail.20020203205249.jdp@polstra.com> 

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> The kernel from today's current (CVSupped 3 Feb 2002 around 17:40
> PST) can't stay up for more than a few minutes without getting a
> page-not-present panic at line 1815 of ufs/ffs/ffs_alloc.c revision
> 1.86.  It is in this code:
> 
>         /*
>          * Find the size of the cluster going backward.
>          */
>         start = blkno - 1;
>         end = start - fs->fs_contigsumsize;
>         if (end < 0)
>                 end = -1;
>         mapp = &freemapp[start / NBBY];
>         map = *mapp--;
>               ^^^^^ 
>               BANG!

I just reverted the "upgrade" of NBBY (to unsigned).

M
-- 
o       Mark Murray
\_      FreeBSD Services Limited
O.\_    Warning: this .sig is umop ap!sdn

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