virtio-blk: fix implicit overflow on virtio_max_dma_size

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[ Upstream commit fafb51a67f ]

The following codes have an implicit conversion from size_t to u32:
(u32)max_size = (size_t)virtio_max_dma_size(vdev);

This may lead overflow, Ex (size_t)4G -> (u32)0. Once
virtio_max_dma_size() has a larger size than U32_MAX, use U32_MAX
instead.

Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Message-Id: <20230904061045.510460-1-pizhenwei@bytedance.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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zhenwei pi 2023-09-04 14:10:45 +08:00 • committed by Greg Kroah-Hartman

parent 32b17bc21f

commit 472bd47874

1 changed files with 3 additions and 1 deletions

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drivers/block/virtio_blk.c

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