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Ling XuandGreg Kroah-Hartman
0fa2185104
[ Upstream commit8b5b456222] 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:c68cfb718c("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> Link: https://lore.kernel.org/r/20250912131236.303102-2-srini@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>