drm/amd: Fix UBSAN array-index-out-of-bounds for Powerplay headers

For pptable structs that use flexible array sizes, use flexible arrays.

Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2039926
Reviewed-by: Mario Limonciello <[email protected]>
Acked-by: Christian König <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

Author: alexdeucher

drivers/gpu/drm/amd/pm/powerplay/hwmgr/pptable_v1_0.h

@@ -367,7 +367,7 @@ typedef struct _ATOM_Tonga_VCE_State_Record {
 typedef struct _ATOM_Tonga_VCE_State_Table {
 	UCHAR ucRevId;
 	UCHAR ucNumEntries;
-	ATOM_Tonga_VCE_State_Record entries[1];
+	ATOM_Tonga_VCE_State_Record entries[];
 } ATOM_Tonga_VCE_State_Table;
 
 typedef struct _ATOM_Tonga_PowerTune_Table {
@@ -481,7 +481,7 @@ typedef struct _ATOM_Tonga_Hard_Limit_Record {
 typedef struct _ATOM_Tonga_Hard_Limit_Table {
 	UCHAR ucRevId;
 	UCHAR ucNumEntries;
-	ATOM_Tonga_Hard_Limit_Record entries[1];
+	ATOM_Tonga_Hard_Limit_Record entries[];
 } ATOM_Tonga_Hard_Limit_Table;
 
 typedef struct _ATOM_Tonga_GPIO_Table {

drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_pptable.h

@@ -129,7 +129,7 @@ typedef struct _ATOM_Vega10_State {
 typedef struct _ATOM_Vega10_State_Array {
 	UCHAR ucRevId;
 	UCHAR ucNumEntries;                                         /* Number of entries. */
-	ATOM_Vega10_State states[1];                             /* Dynamically allocate entries. */
+	ATOM_Vega10_State states[];                             /* Dynamically allocate entries. */
 } ATOM_Vega10_State_Array;
 
 typedef struct _ATOM_Vega10_CLK_Dependency_Record {
@@ -169,37 +169,37 @@ typedef struct _ATOM_Vega10_GFXCLK_Dependency_Table {
 typedef struct _ATOM_Vega10_MCLK_Dependency_Table {
     UCHAR ucRevId;
     UCHAR ucNumEntries;                                         /* Number of entries. */
-    ATOM_Vega10_MCLK_Dependency_Record entries[1];            /* Dynamically allocate entries. */
+    ATOM_Vega10_MCLK_Dependency_Record entries[];            /* Dynamically allocate entries. */
 } ATOM_Vega10_MCLK_Dependency_Table;
 
 typedef struct _ATOM_Vega10_SOCCLK_Dependency_Table {
     UCHAR ucRevId;
     UCHAR ucNumEntries;                                         /* Number of entries. */
-    ATOM_Vega10_CLK_Dependency_Record entries[1];            /* Dynamically allocate entries. */
+    ATOM_Vega10_CLK_Dependency_Record entries[];            /* Dynamically allocate entries. */
 } ATOM_Vega10_SOCCLK_Dependency_Table;
 
 typedef struct _ATOM_Vega10_DCEFCLK_Dependency_Table {
     UCHAR ucRevId;
     UCHAR ucNumEntries;                                         /* Number of entries. */
-    ATOM_Vega10_CLK_Dependency_Record entries[1];            /* Dynamically allocate entries. */
+    ATOM_Vega10_CLK_Dependency_Record entries[];            /* Dynamically allocate entries. */
 } ATOM_Vega10_DCEFCLK_Dependency_Table;
 
 typedef struct _ATOM_Vega10_PIXCLK_Dependency_Table {
 	UCHAR ucRevId;
 	UCHAR ucNumEntries;                                         /* Number of entries. */
-	ATOM_Vega10_CLK_Dependency_Record entries[1];            /* Dynamically allocate entries. */
+	ATOM_Vega10_CLK_Dependency_Record entries[];            /* Dynamically allocate entries. */
 } ATOM_Vega10_PIXCLK_Dependency_Table;
 
 typedef struct _ATOM_Vega10_DISPCLK_Dependency_Table {
 	UCHAR ucRevId;
 	UCHAR ucNumEntries;                                         /* Number of entries.*/
-	ATOM_Vega10_CLK_Dependency_Record entries[1];            /* Dynamically allocate entries. */
+	ATOM_Vega10_CLK_Dependency_Record entries[];            /* Dynamically allocate entries. */
 } ATOM_Vega10_DISPCLK_Dependency_Table;
 
 typedef struct _ATOM_Vega10_PHYCLK_Dependency_Table {
 	UCHAR ucRevId;
 	UCHAR ucNumEntries;                                         /* Number of entries. */
-	ATOM_Vega10_CLK_Dependency_Record entries[1];            /* Dynamically allocate entries. */
+	ATOM_Vega10_CLK_Dependency_Record entries[];            /* Dynamically allocate entries. */
 } ATOM_Vega10_PHYCLK_Dependency_Table;
 
 typedef struct _ATOM_Vega10_MM_Dependency_Record {
@@ -213,7 +213,7 @@ typedef struct _ATOM_Vega10_MM_Dependency_Record {
 typedef struct _ATOM_Vega10_MM_Dependency_Table {
 	UCHAR ucRevId;
 	UCHAR ucNumEntries;                                         /* Number of entries */
-	ATOM_Vega10_MM_Dependency_Record entries[1];             /* Dynamically allocate entries */
+	ATOM_Vega10_MM_Dependency_Record entries[];             /* Dynamically allocate entries */
 } ATOM_Vega10_MM_Dependency_Table;
 
 typedef struct _ATOM_Vega10_PCIE_Record {
@@ -225,7 +225,7 @@ typedef struct _ATOM_Vega10_PCIE_Record {
 typedef struct _ATOM_Vega10_PCIE_Table {
 	UCHAR  ucRevId;
 	UCHAR  ucNumEntries;                                        /* Number of entries */
-	ATOM_Vega10_PCIE_Record entries[1];                      /* Dynamically allocate entries. */
+	ATOM_Vega10_PCIE_Record entries[];                      /* Dynamically allocate entries. */
 } ATOM_Vega10_PCIE_Table;
 
 typedef struct _ATOM_Vega10_Voltage_Lookup_Record {
@@ -235,7 +235,7 @@ typedef struct _ATOM_Vega10_Voltage_Lookup_Record {
 typedef struct _ATOM_Vega10_Voltage_Lookup_Table {
 	UCHAR ucRevId;
 	UCHAR ucNumEntries;                                          /* Number of entries */
-	ATOM_Vega10_Voltage_Lookup_Record entries[1];             /* Dynamically allocate entries */
+	ATOM_Vega10_Voltage_Lookup_Record entries[];             /* Dynamically allocate entries */
 } ATOM_Vega10_Voltage_Lookup_Table;
 
 typedef struct _ATOM_Vega10_Fan_Table {
@@ -327,7 +327,7 @@ typedef struct _ATOM_Vega10_VCE_State_Record {
 typedef struct _ATOM_Vega10_VCE_State_Table {
     UCHAR ucRevId;
     UCHAR ucNumEntries;
-    ATOM_Vega10_VCE_State_Record entries[1];
+    ATOM_Vega10_VCE_State_Record entries[];
 } ATOM_Vega10_VCE_State_Table;
 
 typedef struct _ATOM_Vega10_PowerTune_Table {
@@ -427,7 +427,7 @@ typedef struct _ATOM_Vega10_Hard_Limit_Record {
 typedef struct _ATOM_Vega10_Hard_Limit_Table {
     UCHAR ucRevId;
     UCHAR ucNumEntries;
-    ATOM_Vega10_Hard_Limit_Record entries[1];
+    ATOM_Vega10_Hard_Limit_Record entries[];
 } ATOM_Vega10_Hard_Limit_Table;
 
 typedef struct _Vega10_PPTable_Generic_SubTable_Header {