[PATCH AUTOSEL 4.19 3/5] drm/amd: Fix UBSAN array-index-out-of-bounds for Polaris and Tonga

Sasha Levin
2023-11-07T12:46:14Z

[ Upstream commit 0f0e59075b5c22f1e871fbd508d6e4f495048356 ]

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

Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2036742
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/powerplay/hwmgr/pptable_v1_0.h | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/pptable_v1_0.h b/drivers/gpu/drm/amd/powerplay/hwmgr/pptable_v1_0.h
index d5a4a08c6d392..0c61e2bc14cde 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/pptable_v1_0.h
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/pptable_v1_0.h
@@ -164,7 +164,7 @@ typedef struct _ATOM_Tonga_State {
typedef struct _ATOM_Tonga_State_Array {
UCHAR ucRevId;
UCHAR ucNumEntries; /* Number of entries. */
- ATOM_Tonga_State entries[1]; /* Dynamically allocate entries. */
+ ATOM_Tonga_State entries[]; /* Dynamically allocate entries. */
} ATOM_Tonga_State_Array;

typedef struct _ATOM_Tonga_MCLK_Dependency_Record {
@@ -210,7 +210,7 @@ typedef struct _ATOM_Polaris_SCLK_Dependency_Record {
typedef struct _ATOM_Polaris_SCLK_Dependency_Table {
UCHAR ucRevId;
UCHAR ucNumEntries; /* Number of entries. */
- ATOM_Polaris_SCLK_Dependency_Record entries[1]; /* Dynamically allocate entries. */
+ ATOM_Polaris_SCLK_Dependency_Record entries[]; /* Dynamically allocate entries. */
} ATOM_Polaris_SCLK_Dependency_Table;

typedef struct _ATOM_Tonga_PCIE_Record {
@@ -222,7 +222,7 @@ typedef struct _ATOM_Tonga_PCIE_Record {
typedef struct _ATOM_Tonga_PCIE_Table {
UCHAR ucRevId;
UCHAR ucNumEntries; /* Number of entries. */
- ATOM_Tonga_PCIE_Record entries[1]; /* Dynamically allocate entries. */
+ ATOM_Tonga_PCIE_Record entries[]; /* Dynamically allocate entries. */
} ATOM_Tonga_PCIE_Table;

typedef struct _ATOM_Polaris10_PCIE_Record {
@@ -235,7 +235,7 @@ typedef struct _ATOM_Polaris10_PCIE_Record {
typedef struct _ATOM_Polaris10_PCIE_Table {
UCHAR ucRevId;
UCHAR ucNumEntries; /* Number of entries. */
- ATOM_Polaris10_PCIE_Record entries[1]; /* Dynamically allocate entries. */
+ ATOM_Polaris10_PCIE_Record entries[]; /* Dynamically allocate entries. */
} ATOM_Polaris10_PCIE_Table;

@@ -252,7 +252,7 @@ typedef struct _ATOM_Tonga_MM_Dependency_Record {
typedef struct _ATOM_Tonga_MM_Dependency_Table {
UCHAR ucRevId;
UCHAR ucNumEntries; /* Number of entries. */
- ATOM_Tonga_MM_Dependency_Record entries[1]; /* Dynamically allocate entries. */
+ ATOM_Tonga_MM_Dependency_Record entries[]; /* Dynamically allocate entries. */
} ATOM_Tonga_MM_Dependency_Table;

typedef struct _ATOM_Tonga_Voltage_Lookup_Record {
@@ -265,7 +265,7 @@ typedef struct _ATOM_Tonga_Voltage_Lookup_Record {
typedef struct _ATOM_Tonga_Voltage_Lookup_Table {
UCHAR ucRevId;
UCHAR ucNumEntries; /* Number of entries. */
- ATOM_Tonga_Voltage_Lookup_Record entries[1]; /* Dynamically allocate entries. */
+ ATOM_Tonga_Voltage_Lookup_Record entries[]; /* Dynamically allocate entries. */
} ATOM_Tonga_Voltage_Lookup_Table;

typedef struct _ATOM_Tonga_Fan_Table {
--
2.42.0