Re: [PATCH 1/4] misc: fastrpc: Save actual DMA size in fastrpc_map structure

[Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>]

On 12/09/2025 16:12, srini@kernel.org wrote:
> From: Ling Xu <quic_lxu5@quicinc.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@kernel.org
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
> Co-developed-by: Ekansh Gupta <ekansh.gupta@oss.qualcomm.com>
> Signed-off-by: Ekansh Gupta <ekansh.gupta@oss.qualcomm.com>
> Signed-off-by: Ling Xu <quic_lxu5@quicinc.com>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> Signed-off-by: Srinivas Kandagatla <srini@kernel.org>
> ---
>   drivers/misc/fastrpc.c | 27 ++++++++++++++++++---------
>   1 file changed, 18 insertions(+), 9 deletions(-)
> 

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-- 
With best wishes
Dmitry