[PATCH 2/2] drm/amdgpu: Fix integer overflow in amdgpu_cs_pass1

[hackyzh002]

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 <hackyzh...@gmail.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index 08eced097..c17b3af85 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;
+       uint64_t int size;
        int ret;
        int i;
 
@@ -235,7 +235,7 @@ static int amdgpu_cs_pass1(struct amdgpu_cs_parser *p,
                size = p->chunks[i].length_dw;
                cdata = u64_to_user_ptr(user_chunk.chunk_data);
 
-               p->chunks[i].kdata = kvmalloc_array(size, sizeof(uint32_t),
+               p->chunks[i].kdata = kvcalloc(size, sizeof(uint32_t),
                                                    GFP_KERNEL);
                if (p->chunks[i].kdata == NULL) {
                        ret = -ENOMEM;
-- 
2.34.1