The patch titled
Fix potential use of out of range page in kmem_getpages.
has been added to the -mm tree. Its filename is
zoned-vm-counters-conversion-of-nr_slab-to-per-zone-counter-fix-2.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: Fix potential use of out of range page in kmem_getpages.
From: Christoph Lameter <clameter@xxxxxxx>
ZVC: Fix potential use of out of range page in kmem_getpages.
We use page_zone(page) following several page increments in kmem_getpages().
Which page in a zone we use really does not matter. However, we may reach an
invalid page and then oops.
So move the counter decrement before we increment page.
Signed-off-by: Christoph Lameter <clameter@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
mm/slab.c | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/slab.c~zoned-vm-counters-conversion-of-nr_slab-to-per-zone-counter-fix-2 mm/slab.c
--- 25/mm/slab.c~zoned-vm-counters-conversion-of-nr_slab-to-per-zone-counter-fix-2 Tue Jun 27 15:22:51 2006
+++ 25-akpm/mm/slab.c Tue Jun 27 15:22:51 2006
@@ -1522,12 +1522,12 @@ static void kmem_freepages(struct kmem_c
struct page *page = virt_to_page(addr);
const unsigned long nr_freed = i;
+ sub_zone_page_state(page_zone(page), NR_SLAB, nr_freed);
while (i--) {
BUG_ON(!PageSlab(page));
__ClearPageSlab(page);
page++;
}
- sub_zone_page_state(page_zone(page), NR_SLAB, nr_freed);
if (current->reclaim_state)
current->reclaim_state->reclaimed_slab += nr_freed;
free_pages((unsigned long)addr, cachep->gfporder);
_
Patches currently in -mm which might be from clameter@xxxxxxx are
origin.patch
zoned-vm-counters-create-vmstatc-h-from-page_allocc-h.patch
zoned-vm-counters-create-vmstatc-h-from-page_allocc-h-fix-2.patch
zoned-vm-counters-basic-zvc-zoned-vm-counter-implementation.patch
zoned-vm-counters-basic-zvc-zoned-vm-counter-implementation-tidy.patch
zoned-vm-counters-basic-zvc-zoned-vm-counter-implementation-speedup.patch
zoned-vm-counters-basic-zvc-zoned-vm-counter-implementation-speedup-fix.patch
zoned-vm-counters-convert-nr_mapped-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_pagecache-to-per-zone-counter.patch
zoned-vm-counters-remove-nr_file_mapped-from-scan-control-structure.patch
zoned-vm-counters-remove-nr_file_mapped-from-scan-control-structure-fix.patch
zoned-vm-counters-split-nr_anon_pages-off-from-nr_file_mapped.patch
zoned-vm-counters-zone_reclaim-remove-proc-sys-vm-zone_reclaim_interval.patch
zoned-vm-counters-conversion-of-nr_slab-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_slab-to-per-zone-counter-fix-2.patch
zoned-vm-counters-conversion-of-nr_pagetables-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_dirty-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_writeback-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_unstable-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_bounce-to-per-zone-counter.patch
zoned-vm-counters-conversion-of-nr_bounce-to-per-zone-counter-fix-2.patch
zoned-vm-counters-remove-useless-struct-wbs.patch
use-zoned-vm-counters-for-numa-statistics-v3.patch
light-weight-event-counters-v5.patch
-
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