Re: [PATCH] xprtrdma: fix incorrect header size calcations

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No need for a v2, I can fix it up!


On Wed, Jul 15, 2020 at 12:32 PM Colin Ian King
<colin.king@xxxxxxxxxxxxx> wrote:
>
> Bah, $SUBJECT typo "calcations" -> "calculations". can that be fixed up
> when it's applied, or shall I send a V2?
>
> On 15/07/2020 17:26, Colin King wrote:
> > From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> >
> > Currently the header size calculations are using an assignment
> > operator instead of a += operator when accumulating the header
> > size leading to incorrect sizes.  Fix this by using the correct
> > operator.
> >
> > Addresses-Coverity: ("Unused value")
> > Fixes: 302d3deb2068 ("xprtrdma: Prevent inline overflow")
> > Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> > ---
> >  net/sunrpc/xprtrdma/rpc_rdma.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/net/sunrpc/xprtrdma/rpc_rdma.c b/net/sunrpc/xprtrdma/rpc_rdma.c
> > index 935bbef2f7be..453bacc99907 100644
> > --- a/net/sunrpc/xprtrdma/rpc_rdma.c
> > +++ b/net/sunrpc/xprtrdma/rpc_rdma.c
> > @@ -71,7 +71,7 @@ static unsigned int rpcrdma_max_call_header_size(unsigned int maxsegs)
> >       size = RPCRDMA_HDRLEN_MIN;
> >
> >       /* Maximum Read list size */
> > -     size = maxsegs * rpcrdma_readchunk_maxsz * sizeof(__be32);
> > +     size += maxsegs * rpcrdma_readchunk_maxsz * sizeof(__be32);
> >
> >       /* Minimal Read chunk size */
> >       size += sizeof(__be32); /* segment count */
> > @@ -94,7 +94,7 @@ static unsigned int rpcrdma_max_reply_header_size(unsigned int maxsegs)
> >       size = RPCRDMA_HDRLEN_MIN;
> >
> >       /* Maximum Write list size */
> > -     size = sizeof(__be32);          /* segment count */
> > +     size += sizeof(__be32);         /* segment count */
> >       size += maxsegs * rpcrdma_segment_maxsz * sizeof(__be32);
> >       size += sizeof(__be32); /* list discriminator */
> >
> >
>



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