block: add check that partition length needs to be aligned with block size
authorMin Li <min15.li@samsung.com>
Thu, 29 Jun 2023 14:25:17 +0000 (14:25 +0000)
committerJens Axboe <axboe@kernel.dk>
Wed, 13 Dec 2023 15:19:14 +0000 (08:19 -0700)
commit6f64f866aa1ae6975c95d805ed51d7e9433a0016
tree18d92e436ada0643a65afece185d0592019e14ac
parent5fa3d1a00c2d4ba14f1300371ad39d5456e890d7
block: add check that partition length needs to be aligned with block size

Before calling add partition or resize partition, there is no check
on whether the length is aligned with the logical block size.
If the logical block size of the disk is larger than 512 bytes,
then the partition size maybe not the multiple of the logical block size,
and when the last sector is read, bio_truncate() will adjust the bio size,
resulting in an IO error if the size of the read command is smaller than
the logical block size.If integrity data is supported, this will also
result in a null pointer dereference when calling bio_integrity_free.

Cc: <stable@vger.kernel.org>
Signed-off-by: Min Li <min15.li@samsung.com>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20230629142517.121241-1-min15.li@samsung.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
block/ioctl.c