io_uring: fix provide_buffers sign extension
io_provide_buffers_prep()'s "p->len * p->nbufs" to sign extension problems. Not a huge problem as it's only used for access_ok() and increases the checked length, but better to keep typing right. Reported-by:Colin Ian King <colin.king@canonical.com> Fixes: efe68c1c ("io_uring: validate the full range of provided buffers for access") Signed-off-by:
Pavel Begunkov <asml.silence@gmail.com> Reviewed-by:
Colin Ian King <colin.king@canonical.com> Link: https://lore.kernel.org/r/562376a39509e260d8532186a06226e56eb1f594.1616149233.git.asml.silence@gmail.com Signed-off-by:
Jens Axboe <axboe@kernel.dk>
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