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-rw-r--r--block/ioctl.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/block/ioctl.c b/block/ioctl.c
index f505f9c341..2639ce9df3 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -33,7 +33,7 @@ static int blkpg_do_ioctl(struct block_device *bdev,
if (op == BLKPG_DEL_PARTITION)
return bdev_del_partition(disk, p.pno);
- if (p.start < 0 || p.length <= 0 || p.start + p.length < 0)
+ if (p.start < 0 || p.length <= 0 || LLONG_MAX - p.length < p.start)
return -EINVAL;
/* Check that the partition is aligned to the block size */
if (!IS_ALIGNED(p.start | p.length, bdev_logical_block_size(bdev)))