linux-kernel - [PATCH 0/4] New debug feature: IPC message injector

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Date:   Tue, 16 Nov 2021 17:21:33 +0200
From:   Daniel Baluta <daniel.baluta@....nxp.com>
To:     broonie@...nel.org, peter.ujfalusi@...ux.intel.com
Cc:     daniel.baluta@....com, daniel.baluta@...il.com,
        pierre-louis.bossart@...ux.intel.com, lgirdwood@...il.com,
        ranjani.sridharan@...ux.intel.com, kai.vehmanen@...ux.intel.com,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: [PATCH 0/4] New debug feature: IPC message injector

From: Daniel Baluta <daniel.baluta@....com>

With the new SND_SOC_SOF_DEBUG_IPC_MSG_INJECTOR it is going to be
possible to inject arbitrary messages via the debugfs/sof/ipc_msg_inject
file and get the reply from the same file as a binary.

The main use of this feature is to stress test the firmware's robustness
against maliciously (or erroneous) crafted messages.
We also receive firmware crash reports with only a binary of the sent
message which caused the firmware crash.

Before adding the new debug feature we needed to make sure that the IPC
reply handling is working correctly for cases when we don't know
beforehand the size of the reply (since we don't know what kind of
message we are sending).

Peter Ujfalusi (4):
  ASoC: SOF: utils: Add generic function to get the reply for a tx
    message
  ASoC: SOF: imx: Use the generic helper to get the reply
  ASoC: SOF: intel: Use the generic helper to get the reply
  ASoC: SOF: debug: Add support for IPC message injection

 sound/soc/sof/Kconfig         |   8 +++
 sound/soc/sof/debug.c         | 107 ++++++++++++++++++++++++++++++++++
 sound/soc/sof/imx/imx8.c      |  37 +-----------
 sound/soc/sof/imx/imx8m.c     |  37 +-----------
 sound/soc/sof/intel/atom.c    |  43 +-------------
 sound/soc/sof/intel/bdw.c     |  43 +-------------
 sound/soc/sof/intel/hda-ipc.c |  29 +--------
 sound/soc/sof/ipc.c           |  61 +++++++++++++++++++
 sound/soc/sof/sof-priv.h      |  10 ++++
 9 files changed, 192 insertions(+), 183 deletions(-)

-- 
2.27.0