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path: root/drivers/block/loop.c
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Diffstat (limited to 'drivers/block/loop.c')
-rw-r--r--drivers/block/loop.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index dbf31ec9114d..8684c72de98d 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1707,6 +1707,9 @@ 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;