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)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 25 Jan 2024 23:35:46 +0000 (15:35 -0800)
commitcb16cc1abda18a9514106d2ac8c8d7abc0be5ed8
tree678444cb7640ceaf0d95b1d4f788b7a2a4853323
parent847e6947afd3c46623172d2eabcfc2481ee8668e
block: add check that partition length needs to be aligned with block size

commit 6f64f866aa1ae6975c95d805ed51d7e9433a0016 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
block/ioctl.c