linux-kernel - Re: [PATCH 1/4] misc: fastrpc: Save actual DMA size in fastrpc

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Message-ID: <31a37e24-0044-4987-89a9-d891200592ec@oss.qualcomm.com>
Date: Fri, 12 Sep 2025 16:30:37 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: srini@...nel.org, gregkh@...uxfoundation.org
Cc: linux-kernel@...r.kernel.org, Ling Xu <quic_lxu5@...cinc.com>,
        stable@...nel.org, Ekansh Gupta <ekansh.gupta@....qualcomm.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Subject: Re: [PATCH 1/4] misc: fastrpc: Save actual DMA size in fastrpc_map
 structure

On 12/09/2025 16:12, srini@...nel.org wrote:
> From: Ling Xu <quic_lxu5@...cinc.com>
> 
> For user passed fd buffer, map is created using DMA calls. The
> map related information is stored in fastrpc_map structure. The
> actual DMA size is not stored in the structure. Store the actual
> size of buffer and check it against the user passed size.
> 
> Fixes: c68cfb718c8f ("misc: fastrpc: Add support for context Invoke method")
> Cc: stable@...nel.org
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
> Co-developed-by: Ekansh Gupta <ekansh.gupta@....qualcomm.com>
> Signed-off-by: Ekansh Gupta <ekansh.gupta@....qualcomm.com>
> Signed-off-by: Ling Xu <quic_lxu5@...cinc.com>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> Signed-off-by: Srinivas Kandagatla <srini@...nel.org>
> ---
>   drivers/misc/fastrpc.c | 27 ++++++++++++++++++---------
>   1 file changed, 18 insertions(+), 9 deletions(-)
> 

Please use correct CC list when sending patches. You've missed several 
entries from the MAINTAINERS file.

-- 
With best wishes
Dmitry