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commit3a1bf591e9upstream. The buffer list is sorted and this is not being considered while calculating packet size. This would lead to improper copy length calculation for non-dmaheap buffers which would eventually cause sending improper buffers to DSP. Fixes:c68cfb718c("misc: fastrpc: Add support for context Invoke method") Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Jeya R <jeyr@codeaurora.org> Link: https://lore.kernel.org/r/1637771481-4299-1-git-send-email-jeyr@codeaurora.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>