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

[Poul-Henning Kamp]

In message <20030916102534.J2924 at 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
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Never attribute to malice what can adequately be explained by incompetence.