From: hackyzh002 <hackyzh002@gmail.com>
To: alexander.deucher@amd.com
Cc: christian.koenig@amd.com, Xinhui.Pan@amd.com, airlied@gmail.com,
daniel@ffwll.ch, sumit.semwal@linaro.org,
amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
linux-kernel@vger.kernel.org, linux-media@vger.kernel.org,
linaro-mm-sig@lists.linaro.org, hackyzh002 <hackyzh002@gmail.com>
Subject: [PATCH v3 2/2] drm/amdgpu: Fix integer overflow in amdgpu_cs_pass1
Date: Wed, 19 Apr 2023 20:22:33 +0800 [thread overview]
Message-ID: <20230419122233.3440-1-hackyzh002@gmail.com> (raw)
The type of size is unsigned int, if size is 0x40000000, there will
be an integer overflow, size will be zero after size *= sizeof(uint32_t),
will cause uninitialized memory to be referenced later.
Signed-off-by: hackyzh002 <hackyzh002@gmail.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index 08eced097..89bcacc65 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -192,7 +192,7 @@ static int amdgpu_cs_pass1(struct amdgpu_cs_parser *p,
uint64_t *chunk_array_user;
uint64_t *chunk_array;
uint32_t uf_offset = 0;
- unsigned int size;
+ size_t size;
int ret;
int i;
--
2.34.1
next reply other threads:[~2023-04-19 12:23 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-19 12:22 hackyzh002 [this message]
2023-04-27 7:44 ` [PATCH v3 2/2] drm/amdgpu: Fix integer overflow in amdgpu_cs_pass1 whitehat002 whitehat002
2023-04-27 12:39 ` Alex Deucher
2023-04-28 0:45 ` whitehat002 whitehat002
2023-04-28 13:31 ` Alex Deucher
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