Messages in this thread Patch in this message | | | Date | Sat, 26 May 2007 12:49:30 +1000 (EST) | From | Srihari Vijayaraghavan <> | Subject | Re: [PROBLEM] 2.6.22-rc2 panics on x86-64 with slub |
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--- Christoph Lameter <clameter@sgi.com> wrote: > I finally figured out the second issue. Took some time to get that figure > out. Sorry. But now all the bug reports make sense.
[...]
Impressive Christoph. Indeed, this fixes my problem on latest -git (its hg equivalent :-)). Well done.
(Tested with CONFIG_SLAB_DEBUG without slub_debug; all was well. Then with slub_debug & slabinfo -v also; again all was well. I had many LOCKDEP and its relatives also compiled in.)
Now hoping it'll be in 2.6.22-rc3 :-)).
> Signed-off-by: Christoph Lameter <clameter@sgi.com> > > --- > mm/slub.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > Index: slub/mm/slub.c > =================================================================== > --- slub.orig/mm/slub.c 2007-05-25 18:28:42.000000000 -0700 > +++ slub/mm/slub.c 2007-05-25 18:29:46.000000000 -0700 > @@ -2473,6 +2473,7 @@ void __init kmem_cache_init(void) > */ > create_kmalloc_cache(&kmalloc_caches[0], "kmem_cache_node", > sizeof(struct kmem_cache_node), GFP_KERNEL); > + kmalloc_caches[0].refcount = -1; > #endif > > /* Able to allocate the per node structures */ > @@ -2520,6 +2521,12 @@ static int slab_unmergeable(struct kmem_ > if (s->ctor) > return 1; > > + /* > + * We may have set a slab to be unmergeable during bootstrap. > + */ > + if (s->refcount < 0) > + return 1; > + > return 0; > }
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