Date: Sun, 24 Jun 2001 23:20:03 -0700 (PDT) From: Phil Homewood <pdh@lineo.com> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/28164: [PATCH] crashdump can trash disklabel/other partitions Message-ID: <200106250620.f5P6K3B90675@freefall.freebsd.org>
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The following reply was made to PR kern/28164; it has been noted by GNATS.
From: Phil Homewood <pdh@lineo.com>
To: Bruce Evans <bde@zeta.org.au>
Cc: FreeBSD-gnats-submit@FreeBSD.ORG
Subject: Re: kern/28164: [PATCH] crashdump can trash disklabel/other partitions
Date: Mon, 25 Jun 2001 16:15:46 +1000
Bruce Evans wrote:
> I think you are just trashing the label becauses it is inside da1s2b, not
> overrunning da1s2b.
That was a conclusion I was starting to draw, too.
> This is certainly a bug. The label is write protected
> in software, but the dump routines don't even know that the label is there.
Should it be there?
> This bug is not seen in most configurations because the dump partition
> usually starts at a nonzero offset.
Yep.
Is this configuration acceptable ('b' is a swap partition) or should
it start at non-zero offset? Alas, I can't remember if it was
/stand/sysinstall or /dev/luser who put it there like that.
> Untested incomplete fixes (the boot block area should also be protected...):
Will test 'em tomorrow and let you know. Thanks.
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