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RDMA/ucma: Use struct_size() helper 

Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes.

This code was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Gustavo A. R. Silva 2019-06-04 10:42:22 -05:00 committed by Jason Gunthorpe
parent 4f18904c78
commit 9bcb8940f4
1 changed files with 1 additions and 2 deletions
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3
drivers/infiniband/core/ucma.c
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@ -951,8 +951,7 @@ static ssize_t ucma_query_path(struct ucma_context *ctx,
}
}
if (copy_to_user(response, resp,
sizeof(*resp) + (i * sizeof(struct ib_path_rec_data))))
if (copy_to_user(response, resp, struct_size(resp, path_data, i)))
ret = -EFAULT;
kfree(resp);