nvme: sanitize metadata bounce buffer for reads

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User can request more metadata bytes than the device will write. Ensure
kernel buffer is initialized so we're not leaking unsanitized memory on
the copy-out.

Fixes: 0b7f1f26f9 ("nvme: use the block layer for userspace passthrough metadata")
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kanchan Joshi <joshi.k@samsung.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>

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Keith Busch 2023-10-16 13:12:47 -07:00

parent 4ae55a7dce

commit 2b32c76e2b

1 changed files with 7 additions and 3 deletions

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10

drivers/nvme/host/ioctl.c

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