From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: "Alex Deucher" <alexander.deucher@amd.com>,
"Kees Cook" <keescook@chromium.org>,
"Jeff Johnson" <quic_jjohnson@quicinc.com>,
"Christian König" <christian.koenig@amd.com>,
"Sasha Levin" <sashal@kernel.org>,
Xinhui.Pan@amd.com, airlied@gmail.com, daniel@ffwll.ch,
amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
linux-hardening@vger.kernel.org
Subject: [PATCH AUTOSEL 6.8 16/18] drm/radeon: silence UBSAN warning (v3)
Date: Tue, 23 Apr 2024 07:01:12 -0400 [thread overview]
Message-ID: <20240423110118.1652940-16-sashal@kernel.org> (raw)
In-Reply-To: <20240423110118.1652940-1-sashal@kernel.org>
From: Alex Deucher <alexander.deucher@amd.com>
[ Upstream commit 781d41fed19caf900c8405064676813dc9921d32 ]
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
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/radeon/pptable.h | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/radeon/pptable.h b/drivers/gpu/drm/radeon/pptable.h
index 94947229888ba..b7f22597ee95e 100644
--- a/drivers/gpu/drm/radeon/pptable.h
+++ b/drivers/gpu/drm/radeon/pptable.h
@@ -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
--
2.43.0
parent reply other threads:[~2024-04-23 11:40 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <20240423110118.1652940-1-sashal@kernel.org>]
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