mutex lock assertion panic in vm_page_free() on sparc64

[Kris Kennaway]

On Wed, Feb 23, 2005 at 10:45:52AM +0200, Ruslan Ermilov wrote:
> Hi Alan,
> 
> On Tue, Feb 22, 2005 at 03:29:41PM -0600, Alan Cox wrote:
> > On Tue, Feb 22, 2005 at 02:22:56PM -0500, Jung-uk Kim wrote:
> > > 
> > > FYI, anholt says 'backing vm/uma_core.c to r1.114 has fixed the 
> > > issue':
> > > 
> > > http://docs.freebsd.org/cgi/mid.cgi?1109089389.4267.7.camel
> > 
> > Ok, thanks.  I'd still like to see the contents of the offending
> > page.  When UMA overwrites the page's object field with a slab
> > pointer, it sets a flag within the page.  I'd very much like
> > to know if this flag is set.
> > 
> I had trouble saving a kernel core -- 6 or 7 times I tried this,
> it resulted in the same panic.  Finally, I gave up and reverted
> to vm/uma_core.c,v 1.114, this game me a working savecore.
> Unfortunately, either kdgb(1) doesn't work on sparc64 at the
> moment, or this core is troublesome -- it would endlessly print
> this:

kgdb has never worked on sparc64.  You can install the gdb53 port and
use that though.

Kris
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