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authorHugh Dickins <hugh.dickins@tiscali.co.uk>2009-10-13 15:02:11 +0100
committerAndi Kleen <ak@linux.intel.com>2009-10-19 07:29:20 +0200
commit01e00f880ca700376e1845cf7a2524ebe68e47d6 (patch)
tree6e15c363298dd01dd44d5c96afd9ef36078a1247 /mm
parent4779cb31c0ee3b355116745edca3f3e5fe865553 (diff)
HWPOISON: fix oops on ksm pages
Memory failure on a KSM page currently oopses on its NULL anon_vma in page_lock_anon_vma(): that may not be much worse than the consequence of ignoring it, but it is better to be consistent with how ZERO_PAGE and hugetlb pages and other awkward cases are treated. Just skip it. Signed-off-by: Hugh Dickins <hugh.dickins@tiscali.co.uk> Signed-off-by: Andi Kleen <ak@linux.intel.com>
Diffstat (limited to 'mm')
-rw-r--r--mm/memory-failure.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index e17ec3f1c637..e354b9f2f389 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -35,6 +35,7 @@
#include <linux/mm.h>
#include <linux/page-flags.h>
#include <linux/sched.h>
+#include <linux/ksm.h>
#include <linux/rmap.h>
#include <linux/pagemap.h>
#include <linux/swap.h>
@@ -644,7 +645,7 @@ static void hwpoison_user_mappings(struct page *p, unsigned long pfn,
int i;
int kill = 1;
- if (PageReserved(p) || PageCompound(p) || PageSlab(p))
+ if (PageReserved(p) || PageCompound(p) || PageSlab(p) || PageKsm(p))
return;
/*