mutex lock assertion panic in vm_page_free() on sparc64
Ruslan Ermilov
ru at freebsd.org
Wed Feb 23 08:45:52 GMT 2005
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: kvm_read: invalid address (203d2025)
kgdb: kvm_read: invalid address (6e666f20)
kgdb: kvm_read: invalid address (203d2025)
kgdb: kvm_read: invalid address (6e666f20)
kgdb: kvm_read: invalid address (203d2025)
kgdb: kvm_read: invalid address (6e666f20)
kgdb: kvm_read: invalid address (203d2025)
kgdb: kvm_read: invalid address (6e666f20)
...
At least I can confirm that reverting to rev. 1.114 fixes a
problem.
Cheers,
--
Ruslan Ermilov
ru at FreeBSD.org
FreeBSD committer
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