HWPOISON: fix oops on ksm pages

[mirror_ubuntu-jammy-kernel.git] / mm / memory-failure.c

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index e17ec3f1c63718ca2b5f5ad726a9cc6f4328d7f8..e354b9f2f389d46224f41c07cf5dd004807400f9 100644 (file)
--- 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;
 
        /*