Date: Wed, 17 Sep 2003 09:07:24 +0200 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Bruce Evans <bde@zeta.org.au> Cc: Kris Kennaway <kris@obsecurity.org> Subject: Re: panic: Negative bio_offset (-15050100712783872) on bio 0xc7725d50 Message-ID: <24374.1063782444@critter.freebsd.dk> In-Reply-To: Your message of "Tue, 16 Sep 2003 10:42:38 %2B1000." <20030916102534.J2924@gamplex.bde.org>
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In message <20030916102534.J2924@gamplex.bde.org>, Bruce Evans writes: >This is either disk corruption or an ffs bug. ffs passes the garbage >block number 0xffffe5441ae9720 to bread. GEOM then handles this austerely >by panicing. Garbage block numbers, including negative ones, can possibly >be created by applications seeking to preposterous offsets, so they should >not be handled with panics. They most certainly should! If the range checking in any filesystem is not able to catch these cases I insist that GEOM do so with a panic. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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