1 files changed, 10 insertions, 0 deletions

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index db08af92c6fc..fabe55046c1d 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -938,6 +938,16 @@ static int hwpoison_user_mappings(struct page *p, unsigned long pfn,
                                 BUG_ON(!PageHWPoison(p));
                                 return SWAP_FAIL;
                         }
+                        /*
+                         * We pinned the head page for hwpoison handling,
+                         * now we split the thp and we are interested in
+                         * the hwpoisoned raw page, so move the refcount
+                         * to it.
+                         */
+                        if (hpage != p) {
+                                put_page(hpage);
+                                get_page(p);
+                        }
                         /* THP is split, so ppage should be the real poisoned page. */
                         ppage = p;
                 }