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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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91
drivers/gpu/drm/amd/include/pptable.h
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@ -477,31 +477,30 @@ typedef struct _ATOM_PPLIB_STATE_V2
} ATOM_PPLIB_STATE_V2;
typedef struct _StateArray{
//how many states we have
UCHAR ucNumEntries;
ATOM_PPLIB_STATE_V2 states[1];
//how many states we have
UCHAR ucNumEntries;
ATOM_PPLIB_STATE_V2 states[] /* __counted_by(ucNumEntries) */;
}StateArray;
typedef struct _ClockInfoArray{
//how many clock levels we have
UCHAR ucNumEntries;
//sizeof(ATOM_PPLIB_CLOCK_INFO)
UCHAR ucEntrySize;
UCHAR clockInfo[];
//how many clock levels we have
UCHAR ucNumEntries;
//sizeof(ATOM_PPLIB_CLOCK_INFO)
UCHAR ucEntrySize;
UCHAR clockInfo[];
}ClockInfoArray;
typedef struct _NonClockInfoArray{
//how many non-clock levels we have. normally should be same as number of states
UCHAR ucNumEntries;
//sizeof(ATOM_PPLIB_NONCLOCK_INFO)
UCHAR ucEntrySize;
//how many non-clock levels we have. normally should be same as number of states
UCHAR ucNumEntries;
//sizeof(ATOM_PPLIB_NONCLOCK_INFO)
UCHAR ucEntrySize;
ATOM_PPLIB_NONCLOCK_INFO nonClockInfo[];
ATOM_PPLIB_NONCLOCK_INFO nonClockInfo[] __counted_by(ucNumEntries);
}NonClockInfoArray;
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
{
UCHAR ucNumEntries; // Number of entries.
ATOM_PPLIB_Clock_Voltage_Dependency_Record entries[1]; // Dynamically allocate entries.
// Number of entries.
UCHAR ucNumEntries;
// Dynamically allocate entries.
ATOM_PPLIB_Clock_Voltage_Dependency_Record entries[] __counted_by(ucNumEntries);
}ATOM_PPLIB_Clock_Voltage_Dependency_Table;
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
{
UCHAR ucNumEntries; // Number of entries.
ATOM_PPLIB_Clock_Voltage_Limit_Record entries[1]; // Dynamically allocate entries.
// Number of entries.
UCHAR ucNumEntries;
// Dynamically allocate entries.
ATOM_PPLIB_Clock_Voltage_Limit_Record entries[] __counted_by(ucNumEntries);
}ATOM_PPLIB_Clock_Voltage_Limit_Table;
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
{
UCHAR ucNumEntries; // Number of entries.
ATOM_PPLIB_CAC_Leakage_Record entries[1]; // Dynamically allocate entries.
// Number of entries.
UCHAR ucNumEntries;
// Dynamically allocate entries.
ATOM_PPLIB_CAC_Leakage_Record entries[] __counted_by(ucNumEntries);
}ATOM_PPLIB_CAC_Leakage_Table;
typedef struct _ATOM_PPLIB_PhaseSheddingLimits_Record
@ -568,8 +573,10 @@ typedef struct _ATOM_PPLIB_PhaseSheddingLimits_Record
typedef struct _ATOM_PPLIB_PhaseSheddingLimits_Table
{
UCHAR ucNumEntries; // Number of entries.
ATOM_PPLIB_PhaseSheddingLimits_Record entries[1]; // Dynamically allocate entries.
// Number of entries.
UCHAR ucNumEntries;
// Dynamically allocate entries.
ATOM_PPLIB_PhaseSheddingLimits_Record entries[] __counted_by(ucNumEntries);
}ATOM_PPLIB_PhaseSheddingLimits_Table;
typedef struct _VCEClockInfo{
@ -580,8 +587,8 @@ typedef struct _VCEClockInfo{
}VCEClockInfo;
typedef struct _VCEClockInfoArray{
UCHAR ucNumEntries;
VCEClockInfo entries[1];
UCHAR ucNumEntries;
VCEClockInfo entries[] __counted_by(ucNumEntries);
}VCEClockInfoArray;
typedef struct _ATOM_PPLIB_VCE_Clock_Voltage_Limit_Record
@ -592,8 +599,8 @@ typedef struct _ATOM_PPLIB_VCE_Clock_Voltage_Limit_Record
typedef struct _ATOM_PPLIB_VCE_Clock_Voltage_Limit_Table
{
UCHAR numEntries;
ATOM_PPLIB_VCE_Clock_Voltage_Limit_Record entries[1];
UCHAR numEntries;
ATOM_PPLIB_VCE_Clock_Voltage_Limit_Record entries[] __counted_by(numEntries);
}ATOM_PPLIB_VCE_Clock_Voltage_Limit_Table;
typedef struct _ATOM_PPLIB_VCE_State_Record
@ -604,8 +611,8 @@ typedef struct _ATOM_PPLIB_VCE_State_Record
typedef struct _ATOM_PPLIB_VCE_State_Table
{
UCHAR numEntries;
ATOM_PPLIB_VCE_State_Record entries[1];
UCHAR numEntries;
ATOM_PPLIB_VCE_State_Record entries[] __counted_by(numEntries);
}ATOM_PPLIB_VCE_State_Table;
@ -626,8 +633,8 @@ typedef struct _UVDClockInfo{
}UVDClockInfo;
typedef struct _UVDClockInfoArray{
UCHAR ucNumEntries;
UVDClockInfo entries[1];
UCHAR ucNumEntries;
UVDClockInfo entries[] __counted_by(ucNumEntries);
}UVDClockInfoArray;
typedef struct _ATOM_PPLIB_UVD_Clock_Voltage_Limit_Record
@ -638,8 +645,8 @@ typedef struct _ATOM_PPLIB_UVD_Clock_Voltage_Limit_Record
typedef struct _ATOM_PPLIB_UVD_Clock_Voltage_Limit_Table
{
UCHAR numEntries;
ATOM_PPLIB_UVD_Clock_Voltage_Limit_Record entries[1];
UCHAR numEntries;
ATOM_PPLIB_UVD_Clock_Voltage_Limit_Record entries[] __counted_by(numEntries);
}ATOM_PPLIB_UVD_Clock_Voltage_Limit_Table;
typedef struct _ATOM_PPLIB_UVD_Table
@ -657,8 +664,8 @@ typedef struct _ATOM_PPLIB_SAMClk_Voltage_Limit_Record
}ATOM_PPLIB_SAMClk_Voltage_Limit_Record;
typedef struct _ATOM_PPLIB_SAMClk_Voltage_Limit_Table{
UCHAR numEntries;
ATOM_PPLIB_SAMClk_Voltage_Limit_Record entries[];
UCHAR numEntries;
ATOM_PPLIB_SAMClk_Voltage_Limit_Record entries[] __counted_by(numEntries);
}ATOM_PPLIB_SAMClk_Voltage_Limit_Table;
typedef struct _ATOM_PPLIB_SAMU_Table
@ -675,8 +682,8 @@ typedef struct _ATOM_PPLIB_ACPClk_Voltage_Limit_Record
}ATOM_PPLIB_ACPClk_Voltage_Limit_Record;
typedef struct _ATOM_PPLIB_ACPClk_Voltage_Limit_Table{
UCHAR numEntries;
ATOM_PPLIB_ACPClk_Voltage_Limit_Record entries[1];
UCHAR numEntries;
ATOM_PPLIB_ACPClk_Voltage_Limit_Record entries[] __counted_by(numEntries);
}ATOM_PPLIB_ACPClk_Voltage_Limit_Table;
typedef struct _ATOM_PPLIB_ACP_Table
@ -743,9 +750,9 @@ typedef struct ATOM_PPLIB_VQ_Budgeting_Record{
} ATOM_PPLIB_VQ_Budgeting_Record;
typedef struct ATOM_PPLIB_VQ_Budgeting_Table {
UCHAR revid;
UCHAR numEntries;
ATOM_PPLIB_VQ_Budgeting_Record entries[1];
UCHAR revid;
UCHAR numEntries;
ATOM_PPLIB_VQ_Budgeting_Record entries[] __counted_by(numEntries);
} ATOM_PPLIB_VQ_Budgeting_Table;
#pragma pack()