1 files changed, 2 insertions, 2 deletions

diff --git a/kernel/memremap.c b/kernel/memremap.c
index 60baf4d3401e..6cf54615a9c4 100644
--- a/kernel/memremap.c
+++ b/kernel/memremap.c
@@ -29,10 +29,10 @@ __weak void __iomem *ioremap_cache(resource_size_t offset, unsigned long size)
 
 static void *try_ram_remap(resource_size_t offset, size_t size)
 {
-        struct page *page = pfn_to_page(offset >> PAGE_SHIFT);
+        unsigned long pfn = PHYS_PFN(offset);
 
         /* In the simple case just return the existing linear address */
-        if (!PageHighMem(page))
+        if (pfn_valid(pfn) && !PageHighMem(pfn_to_page(pfn)))
                 return __va(offset);
         return NULL; /* fallback to ioremap_cache */
 }