geom_uzip, panic: bio_length in mdstart_vnode()

[John-Mark Gurney]

Konstantin Belousov wrote this message on Thu, Dec 05, 2013 at 10:25 +0200:
> On Wed, Dec 04, 2013 at 06:07:43PM -0800, John-Mark Gurney wrote:
> > Konstantin Belousov wrote this message on Wed, Dec 04, 2013 at 18:20 +0200:
> > > On Wed, Dec 04, 2013 at 01:59:52PM +0100, Paolo Pinto wrote:
> > > > Hi list!
> > > > 
> > > > My kernel is compiled with option INVARIANTS and I get a reproducible
> > > > kernel panic when trying to read data from a GEOM based compressed
> > > > memory disk:
> > > > 
> > > > Unread portion of the kernel message buffer:
> > > > panic: bio_length 140288
> > > > cpuid = 3
> > > > KDB: stack backtrace:
> > > > #0 0xffffffff80909726 at kdb_backtrace+0x66
> > > > #1 0xffffffff808d0fa8 at panic+0x1d8
> > > > #2 0xffffffff80595949 at mdstart_vnode+0x619
> > > 
> > > The issue is that geom_uzip creates bios which are larger than MAXPHYS.
> > 
> > Shouldn't geom_uzip be fixed to honor MAXPHYS?
> By all means, fix it.

Can one of you at least open a bug report so it's tracked?  I see
that a commit happened, but no bug was opened to track that this issue
needs to be fixed...

-- 
  John-Mark Gurney				Voice: +1 415 225 5579

     "All that I will do, has been done, All that I have, has not."