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drm/radeon: silence UBSAN warning (v3)

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Convert a variable sized array from [1] to [].

v2: fix up a few more.
v3: integrate comments from Kees.

Reviewed-by: Kees Cook <keescook@chromium.org>
Tested-by: Jeff Johnson <quic_jjohnson@quicinc.com> (v2)
Acked-by: Christian König <christian.koenig@amd.com> (v1)
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: keescook@chromium.org
This commit is contained in:
Alex Deucher 2024-04-08 13:30:15 -04:00
parent 69c0f07053
commit efade6fe50
1 changed files with 5 additions and 5 deletions
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10
drivers/gpu/drm/radeon/pptable.h
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@ -424,7 +424,7 @@ typedef struct _ATOM_PPLIB_SUMO_CLOCK_INFO{
typedef struct _ATOM_PPLIB_STATE_V2
{
//number of valid dpm levels in this state; Driver uses it to calculate the whole
//size of the state: sizeof(ATOM_PPLIB_STATE_V2) + (ucNumDPMLevels - 1) * sizeof(UCHAR)
//size of the state: struct_size(ATOM_PPLIB_STATE_V2, clockInfoIndex, ucNumDPMLevels)
UCHAR ucNumDPMLevels;
//a index to the array of nonClockInfos
@ -432,14 +432,14 @@ typedef struct _ATOM_PPLIB_STATE_V2
/**
* Driver will read the first ucNumDPMLevels in this array
*/
UCHAR clockInfoIndex[1];
UCHAR clockInfoIndex[] __counted_by(ucNumDPMLevels);
} ATOM_PPLIB_STATE_V2;
typedef struct _StateArray{
//how many states we have
UCHAR ucNumEntries;
ATOM_PPLIB_STATE_V2 states[1];
ATOM_PPLIB_STATE_V2 states[] __counted_by(ucNumEntries);
}StateArray;
@ -450,7 +450,7 @@ typedef struct _ClockInfoArray{
//sizeof(ATOM_PPLIB_CLOCK_INFO)
UCHAR ucEntrySize;
UCHAR clockInfo[1];
UCHAR clockInfo[] __counted_by(ucNumEntries);
}ClockInfoArray;
typedef struct _NonClockInfoArray{
@ -460,7 +460,7 @@ typedef struct _NonClockInfoArray{
//sizeof(ATOM_PPLIB_NONCLOCK_INFO)
UCHAR ucEntrySize;
ATOM_PPLIB_NONCLOCK_INFO nonClockInfo[1];
ATOM_PPLIB_NONCLOCK_INFO nonClockInfo[] __counted_by(ucNumEntries);
}NonClockInfoArray;
typedef struct _ATOM_PPLIB_Clock_Voltage_Dependency_Record