Re: panic: Negative bio_offset (-15050100712783872) on bio 0xc7725d50

From: Bernd Walter <>
Date: Wed, 17 Sep 2003 10:27:38 +0200
On Wed, Sep 17, 2003 at 09:07:24AM +0200, Poul-Henning Kamp wrote:
> In message <>, 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.

What is wrong with returning an IO error?

I always hated panics because of filesystem corruptions.
An alternative would be to just bring that filesystem down.
Its easy to panic a whole system with a bogus filesystem on a removeable

B.Walter                   BWCT                              
Received on Tue Sep 16 2003 - 23:27:55 UTC

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