1 files changed, 4 insertions, 3 deletions

diff --git a/block/ioctl.c b/block/ioctl.c
index d724ceb1d465..3d866d0037f2 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -125,7 +125,7 @@ static int blk_ioctl_discard(struct block_device *bdev, uint64_t start,
         start >>= 9;
         len >>= 9;
 
-        if (start + len > (bdev->bd_inode->i_size >> 9))
+        if (start + len > (i_size_read(bdev->bd_inode) >> 9))
                 return -EINVAL;
         if (secure)
                 flags |= BLKDEV_DISCARD_SECURE;
@@ -242,6 +242,7 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
                  * We need to set the startsect first, the driver may
                  * want to override it.
                  */
+                memset(&geo, 0, sizeof(geo));
                 geo.start = get_start_sect(bdev);
                 ret = disk->fops->getgeo(bdev, &geo);
                 if (ret)
@@ -307,12 +308,12 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
                 ret = blkdev_reread_part(bdev);
                 break;
         case BLKGETSIZE:
-                size = bdev->bd_inode->i_size;
+                size = i_size_read(bdev->bd_inode);
                 if ((size >> 9) > ~0UL)
                         return -EFBIG;
                 return put_ulong(arg, size >> 9);
         case BLKGETSIZE64:
-                return put_u64(arg, bdev->bd_inode->i_size);
+                return put_u64(arg, i_size_read(bdev->bd_inode));
         case BLKTRACESTART:
         case BLKTRACESTOP:
         case BLKTRACESETUP: