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https://github.com/Divested-Mobile/DivestOS-Build.git
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91 lines
3.3 KiB
Diff
91 lines
3.3 KiB
Diff
From e7369163162e7773bc887f7a264d6aa46cfcc665 Mon Sep 17 00:00:00 2001
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From: Patrick Daly <pdaly@codeaurora.org>
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Date: Thu, 28 May 2015 18:05:54 -0700
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Subject: ASoC: msm: qdsp6v2: DAP: Fix unprotected userspace access
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Use get_user() & friends to access userspace addresses.
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Change-Id: I9741a60e53f6253da27913175e9b8c4abbf50db9
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Signed-off-by: Patrick Daly <pdaly@codeaurora.org>
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Signed-off-by: Pradnya Chaphekar <pradnyac@codeaurora.org>
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---
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sound/soc/msm/qdsp6v2/msm-ds2-dap-config.c | 21 ++++++++++++---------
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1 file changed, 12 insertions(+), 9 deletions(-)
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diff --git a/sound/soc/msm/qdsp6v2/msm-ds2-dap-config.c b/sound/soc/msm/qdsp6v2/msm-ds2-dap-config.c
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index 67a9400..7761b9c 100644
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--- a/sound/soc/msm/qdsp6v2/msm-ds2-dap-config.c
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+++ b/sound/soc/msm/qdsp6v2/msm-ds2-dap-config.c
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@@ -1354,11 +1354,13 @@ end:
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static int msm_ds2_dap_handle_commands(u32 cmd, void *arg)
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{
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int ret = 0, port_id = 0;
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+ int32_t data;
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struct dolby_param_data *dolby_data = (struct dolby_param_data *)arg;
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+ get_user(data, &dolby_data->data[0]);
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pr_debug("%s: param_id %d,be_id %d,device_id 0x%x,length %d,data %d\n",
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__func__, dolby_data->param_id, dolby_data->be_id,
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- dolby_data->device_id, dolby_data->length, dolby_data->data[0]);
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+ dolby_data->device_id, dolby_data->length, data);
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switch (dolby_data->param_id) {
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case DAP_CMD_COMMIT_ALL:
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@@ -1370,18 +1372,18 @@ static int msm_ds2_dap_handle_commands(u32 cmd, void *arg)
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break;
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case DAP_CMD_USE_CACHE_FOR_INIT:
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- ds2_dap_params_states.use_cache = dolby_data->data[0];
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+ ds2_dap_params_states.use_cache = data;
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break;
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case DAP_CMD_SET_BYPASS:
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pr_debug("%s: bypass %d bypass type %d, data %d\n", __func__,
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ds2_dap_params_states.dap_bypass,
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ds2_dap_params_states.dap_bypass_type,
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- dolby_data->data[0]);
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+ data);
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/* Do not perform bypass operation if bypass state is same*/
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- if (ds2_dap_params_states.dap_bypass == dolby_data->data[0])
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+ if (ds2_dap_params_states.dap_bypass == data)
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break;
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- ds2_dap_params_states.dap_bypass = dolby_data->data[0];
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+ ds2_dap_params_states.dap_bypass = data;
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/* hard bypass */
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if (ds2_dap_params_states.dap_bypass_type == DAP_HARD_BYPASS)
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msm_ds2_dap_handle_bypass(dolby_data);
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@@ -1390,7 +1392,7 @@ static int msm_ds2_dap_handle_commands(u32 cmd, void *arg)
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break;
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case DAP_CMD_SET_BYPASS_TYPE:
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- if (dolby_data->data[0] == true)
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+ if (data == true)
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ds2_dap_params_states.dap_bypass_type =
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DAP_HARD_BYPASS;
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else
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@@ -1429,6 +1431,7 @@ static int msm_ds2_dap_set_param(u32 cmd, void *arg)
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{
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int rc = 0, idx, i, j, off, port_id = 0, cdev = 0;
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int32_t num_device = 0;
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+ int32_t data = 0;
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int32_t dev_arr[DS2_DSP_SUPPORTED_ENDP_DEVICE] = {0};
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struct dolby_param_data *dolby_data = (struct dolby_param_data *)arg;
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@@ -1472,10 +1475,10 @@ static int msm_ds2_dap_set_param(u32 cmd, void *arg)
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ds2_dap_params[cdev].dap_params_modified[idx] += 1;
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for (j = 0; j < dolby_data->length; j++) {
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off = ds2_dap_params_offset[idx];
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- ds2_dap_params[cdev].params_val[off + j] =
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- dolby_data->data[j];
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+ get_user(data, &dolby_data->data[j]);
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+ ds2_dap_params[cdev].params_val[off + j] = data;
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pr_debug("%s:off %d,val[i/p:o/p]-[%d / %d]\n",
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- __func__, off, dolby_data->data[j],
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+ __func__, off, data,
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ds2_dap_params[cdev].
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params_val[off + j]);
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}
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--
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cgit v1.1
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