1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index a076a14ca72..cbf7052d1dd 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1691,6 +1691,9 @@ static int __init loop_init(void)
         if (max_part > 0)
                 part_shift = fls(max_part);
 
+        if ((1UL << part_shift) > DISK_MAX_PARTS)
+                return -EINVAL;
+
         if (max_loop > 1UL << (MINORBITS - part_shift))
                 return -EINVAL;