linux-kernel - Re: [PATCH v1 1/3] misc: fastrpc: Save actual DMA size in fastrpc

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Message-ID: <u3qwicfpvqmkopvzgl2f6wrzo5egvvl7sfqimnkpqopg2u4wp7@2prohvnsh2bz>
Date: Fri, 30 Aug 2024 12:28:52 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Ekansh Gupta <quic_ekangupt@...cinc.com>
Cc: srinivas.kandagatla@...aro.org, linux-arm-msm@...r.kernel.org, 
	gregkh@...uxfoundation.org, quic_bkumar@...cinc.com, linux-kernel@...r.kernel.org, 
	quic_chennak@...cinc.com, dri-devel@...ts.freedesktop.org, arnd@...db.de, 
	stable <stable@...nel.org>
Subject: Re: [PATCH v1 1/3] misc: fastrpc: Save actual DMA size in
 fastrpc_map structure

On Thu, Aug 22, 2024 at 04:29:31PM GMT, Ekansh Gupta wrote:
> 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 <stable@...nel.org>
> Signed-off-by: Ekansh Gupta <quic_ekangupt@...cinc.com>
> ---
>  drivers/misc/fastrpc.c | 27 ++++++++++++++++++---------
>  1 file changed, 18 insertions(+), 9 deletions(-)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

-- 
With best wishes
Dmitry