mm/memory-failure: cast index to loff_t before shifting it

[platform/kernel/linux-starfive.git] / mm / memory-failure.c

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 4d6e43c..f2397a8 100644 (file)
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1705,7 +1705,7 @@ static void unmap_and_kill(struct list_head *to_kill, unsigned long pfn,
                 * mapping being torn down is communicated in siginfo, see
                 * kill_proc()
                 */
-               loff_t start = (index << PAGE_SHIFT) & ~(size - 1);
+               loff_t start = ((loff_t)index << PAGE_SHIFT) & ~(size - 1);
 
                unmap_mapping_range(mapping, start, size, 0);
        }