Merge "drm/msm/sde: remove out of bound access for qos lut parsing" (47f251b2) · Commits · e / devices / android_kernel_sony_msm8998

drivers/gpu/drm/msm/sde/sde_hw_catalog.c

+67 −25

Original line number	Diff line number	Diff line
		@@ -27,11 +27,11 @@

		/**
		* Max hardware block in certain hardware. For ex: sspp pipes
		* can have QSEED, pcc, igc, pa, csc, etc. This count is max
		* 12 based on software design. It should be increased if any of the
		* can have QSEED, pcc, igc, pa, csc, qos entries, etc. This count is
		* 64 based on software design. It should be increased if any of the
		* hardware block has more subblocks.
		*/
		#define MAX_SDE_HW_BLK 12
		#define MAX_SDE_HW_BLK 64

		/* each entry will have register address and bit offset in that register */
		#define MAX_BIT_OFFSET 2
		@@ -444,8 +444,16 @@ static uint32_t _sde_copy_formats(
		static int _parse_dt_u32_handler(struct device_node *np,
		char prop_name, u32 offsets, int len, bool mandatory)
		{
		int rc = of_property_read_u32_array(np, prop_name, offsets, len);
		int rc = -EINVAL;

		if (len > MAX_SDE_HW_BLK) {
		SDE_ERROR(
		"prop: %s tries out of bound access for u32 array read len: %d\n",
		prop_name, len);
		return -E2BIG;
		}

		rc = of_property_read_u32_array(np, prop_name, offsets, len);
		if (rc && mandatory)
		SDE_ERROR("mandatory prop: %s u32 array read len:%d\n",
		prop_name, len);
		@@ -467,6 +475,14 @@ static int _parse_dt_bit_offset(struct device_node *np,
		if (arr) {
		len /= sizeof(u32);
		len &= ~0x1;

		if (len > (MAX_SDE_HW_BLK * MAX_BIT_OFFSET)) {
		SDE_ERROR(
		"prop: %s len: %d will lead to out of bound access\n",
		prop_name, len / MAX_BIT_OFFSET);
		return -E2BIG;
		}

		for (i = 0, j = 0; i < len; j++) {
		PROP_BITVALUE_ACCESS(prop_value, prop_index, j, 0) =
		be32_to_cpu(arr[i]);
		@@ -501,8 +517,8 @@ static int _validate_dt_entry(struct device_node *np,
		sde_prop[0].prop_name);
		if ((off_count > MAX_BLOCKS) \|\| (off_count < 0)) {
		if (sde_prop[0].is_mandatory) {
		SDE_ERROR("invalid hw offset prop name:%s\"\
		count: %d\n",
		SDE_ERROR(
		"invalid hw offset prop name:%s count: %d\n",
		sde_prop[0].prop_name, *off_count);
		rc = -EINVAL;
		}
		@@ -545,8 +561,9 @@ static int _validate_dt_entry(struct device_node *np,
		sde_prop[i].type);
		break;
		}
		SDE_DEBUG("prop id:%d prop name:%s prop type:%d \"\
		prop_count:%d\n", i, sde_prop[i].prop_name,
		SDE_DEBUG(
		"prop id:%d prop name:%s prop type:%d prop_count:%d\n",
		i, sde_prop[i].prop_name,
		sde_prop[i].type, prop_count[i]);

		if (rc && sde_prop[i].is_mandatory &&
		@@ -564,14 +581,16 @@ static int _validate_dt_entry(struct device_node *np,

		if (off_count && (prop_count[i] != *off_count) &&
		sde_prop[i].is_mandatory) {
		SDE_ERROR("prop:%s count:%d is different compared to \"\
		offset array:%d\n", sde_prop[i].prop_name,
		SDE_ERROR(
		"prop:%s count:%d is different compared to offset array:%d\n",
		sde_prop[i].prop_name,
		prop_count[i], *off_count);
		rc = -EINVAL;
		goto end;
		} else if (off_count && prop_count[i] != *off_count) {
		SDE_DEBUG("prop:%s count:%d is different compared to \"\
		offset array:%d\n", sde_prop[i].prop_name,
		SDE_DEBUG(
		"prop:%s count:%d is different compared to offset array:%d\n",
		sde_prop[i].prop_name,
		prop_count[i], *off_count);
		rc = 0;
		prop_count[i] = 0;
		@@ -607,8 +626,9 @@ static int _read_dt_entry(struct device_node *np,
		case PROP_TYPE_U32:
		rc = of_property_read_u32(np, sde_prop[i].prop_name,
		&PROP_VALUE_ACCESS(prop_value, i, 0));
		SDE_DEBUG("prop id:%d prop name:%s prop type:%d \"\
		value:0x%x\n", i, sde_prop[i].prop_name,
		SDE_DEBUG(
		"prop id:%d prop name:%s prop type:%d value:0x%x\n",
		i, sde_prop[i].prop_name,
		sde_prop[i].type,
		PROP_VALUE_ACCESS(prop_value, i, 0));
		if (rc)
		@@ -618,8 +638,9 @@ static int _read_dt_entry(struct device_node *np,
		PROP_VALUE_ACCESS(prop_value, i, 0) =
		of_property_read_bool(np,
		sde_prop[i].prop_name);
		SDE_DEBUG("prop id:%d prop name:%s prop type:%d \"\
		value:0x%x\n", i, sde_prop[i].prop_name,
		SDE_DEBUG(
		"prop id:%d prop name:%s prop type:%d value:0x%x\n",
		i, sde_prop[i].prop_name,
		sde_prop[i].type,
		PROP_VALUE_ACCESS(prop_value, i, 0));
		break;
		@@ -628,8 +649,9 @@ static int _read_dt_entry(struct device_node *np,
		&PROP_VALUE_ACCESS(prop_value, i, 0),
		prop_count[i], sde_prop[i].is_mandatory);
		if (rc && sde_prop[i].is_mandatory) {
		SDE_ERROR("%s prop validation success but \"\
		read failed\n", sde_prop[i].prop_name);
		SDE_ERROR(
		"%s prop validation success but read failed\n",
		sde_prop[i].prop_name);
		prop_exists[i] = false;
		goto end;
		} else {
		@@ -651,19 +673,21 @@ static int _read_dt_entry(struct device_node *np,
		prop_value, i, prop_count[i],
		sde_prop[i].is_mandatory);
		if (rc && sde_prop[i].is_mandatory) {
		SDE_ERROR("%s prop validation success but \"\
		read failed\n", sde_prop[i].prop_name);
		SDE_ERROR(
		"%s prop validation success but read failed\n",
		sde_prop[i].prop_name);
		prop_exists[i] = false;
		goto end;
		} else {
		if (rc)
		prop_exists[i] = false;
		SDE_DEBUG("prop id:%d prop name:%s prop \"\
		type:%d", i, sde_prop[i].prop_name,
		SDE_DEBUG(
		"prop id:%d prop name:%s prop type:%d",
		i, sde_prop[i].prop_name,
		sde_prop[i].type);
		for (j = 0; j < prop_count[i]; j++)
		SDE_DEBUG(" count[%d]: bit:0x%x \"\
		off:0x%x \n", j,
		SDE_DEBUG(
		"count[%d]: bit:0x%x off:0x%x\n", j,
		PROP_BITVALUE_ACCESS(prop_value,
		i, j, 0),
		PROP_BITVALUE_ACCESS(prop_value,
		@@ -979,6 +1003,16 @@ static int sde_sspp_parse_dt(struct device_node *np,
		goto end;
		}

		snprintf(sblk->src_blk.name, SDE_HW_BLK_NAME_LEN, "sspp_src_%u",
		sspp->id - SSPP_VIG0);

		if (sspp->clk_ctrl >= SDE_CLK_CTRL_MAX) {
		SDE_ERROR("%s: invalid clk ctrl: %d\n",
		sblk->src_blk.name, sspp->clk_ctrl);
		rc = -EINVAL;
		goto end;
		}

		sblk->maxhdeciexp = MAX_HORZ_DECIMATION;
		sblk->maxvdeciexp = MAX_VERT_DECIMATION;

		@@ -1336,6 +1370,14 @@ static int sde_wb_parse_dt(struct device_node *np,
		PROP_VALUE_ACCESS(prop_value, WB_ID, i);
		wb->xin_id = PROP_VALUE_ACCESS(prop_value, WB_XIN_ID, i);
		wb->vbif_idx = VBIF_NRT;

		if (wb->clk_ctrl >= SDE_CLK_CTRL_MAX) {
		SDE_ERROR("%s: invalid clk ctrl: %d\n",
		wb->name, wb->clk_ctrl);
		rc = -EINVAL;
		goto end;
		}

		wb->len = PROP_VALUE_ACCESS(prop_value, WB_LEN, 0);
		wb->format_list = wb2_formats;
		if (!prop_exists[WB_LEN])
		@@ -2052,7 +2094,7 @@ static int sde_perf_parse_dt(struct device_node *np,
		goto end;
		}

		prop_value = kzalloc(SDE_PROP_MAX *
		prop_value = kzalloc(PERF_PROP_MAX *
		sizeof(struct sde_prop_value), GFP_KERNEL);
		if (!prop_value) {
		rc = -ENOMEM;