1 files changed, 1 insertions, 1 deletions

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index be18ccd017bb..6780b2e18aa1 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5214,7 +5214,7 @@ unsigned long free_reserved_area(void *start, void *end, int poison, char *s)
         start = (void *)PAGE_ALIGN((unsigned long)start);
         end = (void *)((unsigned long)end & PAGE_MASK);
         for (pos = start; pos < end; pos += PAGE_SIZE, pages++) {
-                if (poison)
+                if ((unsigned int)poison <= 0xFF)
                         memset(pos, poison, PAGE_SIZE);
                 free_reserved_page(virt_to_page(pos));
         }