On Mon, 2008-02-25 at 14:26 +0100, Uwe Kleine-König wrote:
> I see the following:
>
> / # for i in 1 2 3; do grep PageTables /proc/meminfo; done
> PageTables: 4 kB
> PageTables: 4294967292 kB
> PageTables: 4294967284 kB
>
> and I bisected it down to 2f569af (CONFIG_HIGHPTE vs. sub-page page
> tables.) This still happens in 2.6.25-rc3.
>
> I have not investigated further, so I cannot tell if it's only the
> output in meminfo that is broken.
>
> This is on ARCH=arm, on a Digi cc9p9360 with ns9xxx_defconfig.
Hmm, not good. The number obviously went negative. There is an imbalance
in the number of pgtable_page_ctor vs. pgtable_page_dtor. Could you try
this patch and watch for warnings?
--
blue skies,
Martin.
"Reality continues to ruin my life." - Calvin.
---
diff --git a/include/asm-arm/pgalloc.h b/include/asm-arm/pgalloc.h
index 163b030..eeb973a 100644
--- a/include/asm-arm/pgalloc.h
+++ b/include/asm-arm/pgalloc.h
@@ -94,6 +94,7 @@ static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
{
+ WARN_ON(!pte);
pgtable_page_dtor(pte);
__free_page(pte);
}
-
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