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drm/amdgpu/pptable: Fix UBSAN array-index-out-of-bounds

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Flexible arrays used [1] instead of []. Replace the former with the latter
to resolve multiple UBSAN warnings observed on boot with a BONAIRE card.

In addition, use the __counted_by attribute where possible to hint the
length of the arrays to the compiler and any sanitizers.

Signed-off-by: Tasos Sahanidis <tasos@tasossah.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Tasos Sahanidis 2024-05-31 19:23:30 +03:00 committed by Alex Deucher
parent 267cace556
commit c6c4dd5401
1 changed files with 49 additions and 42 deletions
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45
drivers/gpu/drm/amd/include/pptable.h
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@ -480,7 +480,7 @@ typedef struct _StateArray{
//how many states we have //how many states we have
UCHAR ucNumEntries; UCHAR ucNumEntries;
ATOM_PPLIB_STATE_V2 states[1]; ATOM_PPLIB_STATE_V2 states[] /* __counted_by(ucNumEntries) */;
}StateArray; }StateArray;
@ -495,13 +495,12 @@ typedef struct _ClockInfoArray{
}ClockInfoArray; }ClockInfoArray;
typedef struct _NonClockInfoArray{ typedef struct _NonClockInfoArray{
//how many non-clock levels we have. normally should be same as number of states //how many non-clock levels we have. normally should be same as number of states
UCHAR ucNumEntries; UCHAR ucNumEntries;
//sizeof(ATOM_PPLIB_NONCLOCK_INFO) //sizeof(ATOM_PPLIB_NONCLOCK_INFO)
UCHAR ucEntrySize; UCHAR ucEntrySize;
ATOM_PPLIB_NONCLOCK_INFO nonClockInfo[]; ATOM_PPLIB_NONCLOCK_INFO nonClockInfo[] __counted_by(ucNumEntries);
}NonClockInfoArray; }NonClockInfoArray;
typedef struct _ATOM_PPLIB_Clock_Voltage_Dependency_Record typedef struct _ATOM_PPLIB_Clock_Voltage_Dependency_Record
@ -513,8 +512,10 @@ typedef struct _ATOM_PPLIB_Clock_Voltage_Dependency_Record
typedef struct _ATOM_PPLIB_Clock_Voltage_Dependency_Table typedef struct _ATOM_PPLIB_Clock_Voltage_Dependency_Table
{ {
UCHAR ucNumEntries; // Number of entries. // Number of entries.
ATOM_PPLIB_Clock_Voltage_Dependency_Record entries[1]; // Dynamically allocate entries. UCHAR ucNumEntries;
// Dynamically allocate entries.
ATOM_PPLIB_Clock_Voltage_Dependency_Record entries[] __counted_by(ucNumEntries);
}ATOM_PPLIB_Clock_Voltage_Dependency_Table; }ATOM_PPLIB_Clock_Voltage_Dependency_Table;
typedef struct _ATOM_PPLIB_Clock_Voltage_Limit_Record typedef struct _ATOM_PPLIB_Clock_Voltage_Limit_Record
@ -529,8 +530,10 @@ typedef struct _ATOM_PPLIB_Clock_Voltage_Limit_Record
typedef struct _ATOM_PPLIB_Clock_Voltage_Limit_Table typedef struct _ATOM_PPLIB_Clock_Voltage_Limit_Table
{ {
UCHAR ucNumEntries; // Number of entries. // Number of entries.
ATOM_PPLIB_Clock_Voltage_Limit_Record entries[1]; // Dynamically allocate entries. UCHAR ucNumEntries;
// Dynamically allocate entries.
ATOM_PPLIB_Clock_Voltage_Limit_Record entries[] __counted_by(ucNumEntries);
}ATOM_PPLIB_Clock_Voltage_Limit_Table; }ATOM_PPLIB_Clock_Voltage_Limit_Table;
union _ATOM_PPLIB_CAC_Leakage_Record union _ATOM_PPLIB_CAC_Leakage_Record
@ -553,8 +556,10 @@ typedef union _ATOM_PPLIB_CAC_Leakage_Record ATOM_PPLIB_CAC_Leakage_Record;
typedef struct _ATOM_PPLIB_CAC_Leakage_Table typedef struct _ATOM_PPLIB_CAC_Leakage_Table
{ {
UCHAR ucNumEntries; // Number of entries. // Number of entries.
ATOM_PPLIB_CAC_Leakage_Record entries[1]; // Dynamically allocate entries. UCHAR ucNumEntries;
// Dynamically allocate entries.
ATOM_PPLIB_CAC_Leakage_Record entries[] __counted_by(ucNumEntries);
}ATOM_PPLIB_CAC_Leakage_Table; }ATOM_PPLIB_CAC_Leakage_Table;
typedef struct _ATOM_PPLIB_PhaseSheddingLimits_Record typedef struct _ATOM_PPLIB_PhaseSheddingLimits_Record
@ -568,8 +573,10 @@ typedef struct _ATOM_PPLIB_PhaseSheddingLimits_Record
typedef struct _ATOM_PPLIB_PhaseSheddingLimits_Table typedef struct _ATOM_PPLIB_PhaseSheddingLimits_Table
{ {
UCHAR ucNumEntries; // Number of entries. // Number of entries.
ATOM_PPLIB_PhaseSheddingLimits_Record entries[1]; // Dynamically allocate entries. UCHAR ucNumEntries;
// Dynamically allocate entries.
ATOM_PPLIB_PhaseSheddingLimits_Record entries[] __counted_by(ucNumEntries);
}ATOM_PPLIB_PhaseSheddingLimits_Table; }ATOM_PPLIB_PhaseSheddingLimits_Table;
typedef struct _VCEClockInfo{ typedef struct _VCEClockInfo{
@ -581,7 +588,7 @@ typedef struct _VCEClockInfo{
typedef struct _VCEClockInfoArray{ typedef struct _VCEClockInfoArray{
UCHAR ucNumEntries; UCHAR ucNumEntries;
VCEClockInfo entries[1]; VCEClockInfo entries[] __counted_by(ucNumEntries);
}VCEClockInfoArray; }VCEClockInfoArray;
typedef struct _ATOM_PPLIB_VCE_Clock_Voltage_Limit_Record typedef struct _ATOM_PPLIB_VCE_Clock_Voltage_Limit_Record
@ -593,7 +600,7 @@ typedef struct _ATOM_PPLIB_VCE_Clock_Voltage_Limit_Record
typedef struct _ATOM_PPLIB_VCE_Clock_Voltage_Limit_Table typedef struct _ATOM_PPLIB_VCE_Clock_Voltage_Limit_Table
{ {
UCHAR numEntries; UCHAR numEntries;
ATOM_PPLIB_VCE_Clock_Voltage_Limit_Record entries[1]; ATOM_PPLIB_VCE_Clock_Voltage_Limit_Record entries[] __counted_by(numEntries);
}ATOM_PPLIB_VCE_Clock_Voltage_Limit_Table; }ATOM_PPLIB_VCE_Clock_Voltage_Limit_Table;
typedef struct _ATOM_PPLIB_VCE_State_Record typedef struct _ATOM_PPLIB_VCE_State_Record
@ -605,7 +612,7 @@ typedef struct _ATOM_PPLIB_VCE_State_Record
typedef struct _ATOM_PPLIB_VCE_State_Table typedef struct _ATOM_PPLIB_VCE_State_Table
{ {
UCHAR numEntries; UCHAR numEntries;
ATOM_PPLIB_VCE_State_Record entries[1]; ATOM_PPLIB_VCE_State_Record entries[] __counted_by(numEntries);
}ATOM_PPLIB_VCE_State_Table; }ATOM_PPLIB_VCE_State_Table;
@ -627,7 +634,7 @@ typedef struct _UVDClockInfo{
typedef struct _UVDClockInfoArray{ typedef struct _UVDClockInfoArray{
UCHAR ucNumEntries; UCHAR ucNumEntries;
UVDClockInfo entries[1]; UVDClockInfo entries[] __counted_by(ucNumEntries);
}UVDClockInfoArray; }UVDClockInfoArray;
typedef struct _ATOM_PPLIB_UVD_Clock_Voltage_Limit_Record typedef struct _ATOM_PPLIB_UVD_Clock_Voltage_Limit_Record
@ -639,7 +646,7 @@ typedef struct _ATOM_PPLIB_UVD_Clock_Voltage_Limit_Record
typedef struct _ATOM_PPLIB_UVD_Clock_Voltage_Limit_Table typedef struct _ATOM_PPLIB_UVD_Clock_Voltage_Limit_Table
{ {
UCHAR numEntries; UCHAR numEntries;
ATOM_PPLIB_UVD_Clock_Voltage_Limit_Record entries[1]; ATOM_PPLIB_UVD_Clock_Voltage_Limit_Record entries[] __counted_by(numEntries);
}ATOM_PPLIB_UVD_Clock_Voltage_Limit_Table; }ATOM_PPLIB_UVD_Clock_Voltage_Limit_Table;
typedef struct _ATOM_PPLIB_UVD_Table typedef struct _ATOM_PPLIB_UVD_Table
@ -658,7 +665,7 @@ typedef struct _ATOM_PPLIB_SAMClk_Voltage_Limit_Record
typedef struct _ATOM_PPLIB_SAMClk_Voltage_Limit_Table{ typedef struct _ATOM_PPLIB_SAMClk_Voltage_Limit_Table{
UCHAR numEntries; UCHAR numEntries;
ATOM_PPLIB_SAMClk_Voltage_Limit_Record entries[]; ATOM_PPLIB_SAMClk_Voltage_Limit_Record entries[] __counted_by(numEntries);
}ATOM_PPLIB_SAMClk_Voltage_Limit_Table; }ATOM_PPLIB_SAMClk_Voltage_Limit_Table;
typedef struct _ATOM_PPLIB_SAMU_Table typedef struct _ATOM_PPLIB_SAMU_Table
@ -676,7 +683,7 @@ typedef struct _ATOM_PPLIB_ACPClk_Voltage_Limit_Record
typedef struct _ATOM_PPLIB_ACPClk_Voltage_Limit_Table{ typedef struct _ATOM_PPLIB_ACPClk_Voltage_Limit_Table{
UCHAR numEntries; UCHAR numEntries;
ATOM_PPLIB_ACPClk_Voltage_Limit_Record entries[1]; ATOM_PPLIB_ACPClk_Voltage_Limit_Record entries[] __counted_by(numEntries);
}ATOM_PPLIB_ACPClk_Voltage_Limit_Table; }ATOM_PPLIB_ACPClk_Voltage_Limit_Table;
typedef struct _ATOM_PPLIB_ACP_Table typedef struct _ATOM_PPLIB_ACP_Table
@ -745,7 +752,7 @@ typedef struct ATOM_PPLIB_VQ_Budgeting_Record{
typedef struct ATOM_PPLIB_VQ_Budgeting_Table { typedef struct ATOM_PPLIB_VQ_Budgeting_Table {
UCHAR revid; UCHAR revid;
UCHAR numEntries; UCHAR numEntries;
ATOM_PPLIB_VQ_Budgeting_Record entries[1]; ATOM_PPLIB_VQ_Budgeting_Record entries[] __counted_by(numEntries);
} ATOM_PPLIB_VQ_Budgeting_Table; } ATOM_PPLIB_VQ_Budgeting_Table;
#pragma pack() #pragma pack()