1 files changed, 4 insertions, 2 deletions

diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c
index a0926a6094b2..18b282ce361e 100644
--- a/block/compat_ioctl.c
+++ b/block/compat_ioctl.c
@@ -663,6 +663,7 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
         fmode_t mode = file->f_mode;
         struct backing_dev_info *bdi;
         loff_t size;
+        unsigned int max_sectors;
 
         /*
          * O_NDELAY can be altered using fcntl(.., F_SETFL, ..), so we have
@@ -719,8 +720,9 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
         case BLKSSZGET: /* get block device hardware sector size */
                 return compat_put_int(arg, bdev_logical_block_size(bdev));
         case BLKSECTGET:
-                return compat_put_ushort(arg,
-                                         queue_max_sectors(bdev_get_queue(bdev)));
+                max_sectors = min_t(unsigned int, USHRT_MAX,
+                                    queue_max_sectors(bdev_get_queue(bdev)));
+                return compat_put_ushort(arg, max_sectors);
         case BLKROTATIONAL:
                 return compat_put_ushort(arg,
                                          !blk_queue_nonrot(bdev_get_queue(bdev)));