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-rw-r--r--block/ioctl.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/block/ioctl.c b/block/ioctl.c
index f856963204f4..656c8c6ed206 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -45,6 +45,9 @@ static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user
|| pstart < 0 || plength < 0 || partno > 65535)
return -EINVAL;
}
+ /* check if partition is aligned to blocksize */
+ if (p.start & (bdev_logical_block_size(bdev) - 1))
+ return -EINVAL;
mutex_lock(&bdev->bd_mutex);