block: ublk: make sure that block size is set correctly

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[ Upstream commit 1d1665279a ]

block size is one very key setting for block layer, and bad block size
could panic kernel easily.

Make sure that block size is set correctly.

Meantime if ublk_validate_params() fails, clear ub->params so that disk
is prevented from being added.

Fixes: 71f28f3136 ("ublk_drv: add io_uring based userspace block driver")
Reported-and-tested-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Ming Lei 2023-04-06 20:40:59 +08:00 • committed by Greg Kroah-Hartman

parent fb9ec305e7

commit 231a49460a

1 changed files with 3 additions and 1 deletions

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drivers/block/ublk_drv.c

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