IB/mlx5: Fix stack info leak in mlx5_ib_alloc_ucontext()
We don't set "resp.reserved". Since it's at the end of the struct that means we don't have to copy it to the user. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Eli Cohen <eli@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
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@ -619,7 +619,8 @@ static struct ib_ucontext *mlx5_ib_alloc_ucontext(struct ib_device *ibdev,
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resp.tot_uuars = req.total_num_uuars;
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resp.num_ports = dev->mdev.caps.num_ports;
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err = ib_copy_to_udata(udata, &resp, sizeof(resp));
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err = ib_copy_to_udata(udata, &resp,
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sizeof(resp) - sizeof(resp.reserved));
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if (err)
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goto out_uars;
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