linux-hardening - Re: [PATCH][next] RDMA/hfi1: Use struct_size() and flex_array

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Message-ID: <20210927233650.GA1629838@nvidia.com>
Date:   Mon, 27 Sep 2021 20:36:50 -0300
From:   Jason Gunthorpe <jgg@...dia.com>
To:     "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc:     Mike Marciniszyn <mike.marciniszyn@...nelisnetworks.com>,
        Dennis Dalessandro <dennis.dalessandro@...nelisnetworks.com>,
        Doug Ledford <dledford@...hat.com>, linux-rdma@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH][next] RDMA/hfi1: Use struct_size() and flex_array_size()
 helpers

On Mon, Sep 27, 2021 at 05:53:33PM -0500, Gustavo A. R. Silva wrote:
> Make use of the struct_size() and flex_array_size() helpers instead of
> open-coded versions, in order to avoid any potential type mistakes
> or integer overflows that, in the worse scenario, could lead to heap
> overflows.
> 
> Link: https://github.com/KSPP/linux/issues/160
> Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
> ---
>  drivers/infiniband/hw/hfi1/user_exp_rcv.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)

Applied to for-next, thanks

Jason